Grundfos DIT Installation And Operating Instructions Manual

Brand: Grundfos

Model: DIT

Category: Measuring, testing & control

Type: Installation And Operating Instructions Manual

DIT

Photometer

GRUNDFOS ALLDOS INSTRUCTIONS

Installation and operating instructions

Declaration of Conformity

We Grundfos Alldos declare under our sole responsibility that the product

DIT, to which this declaration relates, is in conformity with the Council

Directives on the approximation of the laws of the EC Member States

relating to

— Electromagnetic compatibility (89/336/EEC).

Standards used:

EN 61326: 1997 + A1: 1998 + A2: 2001, Class B

EN 61326: 1997 / A1: 1998 + A2: 2001

EN 60950: 12/2001 (power pack)

EN 61000-6-2: 08/2002 (power pack)

EN 61000-6-3: 08/2002 (power pack).

— Electrical equipment designed for use within certain voltage limits

(73/23/EEC) [95].

Standard used: EN 61010-1: 2002.

Pfinztal, 1st April 2008

W. Schwald

Managing Director

Ulrich Stemick

Technical Director

CONTENTS

Page

1. Symbols used in this document 3

2. General information 3

2.1 Warranty 3

3. Identification 4

3.1 Nameplate 4

3.2 Type key 4

4. Applications 4

5. Safety 4

5.1 Obligations of owner 4

5.2 Avoidance of danger 4

6. Construction and function 5

6.1 Construction of the instrument 5

6.2 Functional principle 6

6.3 Functioning of the electrochemical pH determination

and temperature measuring (DIT-S) 6

6.4 Functioning of the electrochemical determination

of the redox potential (DIT-S) 6

6.5 Measuring ranges and tolerances 6

6.6 Technical data 7

7. Connections (DIT-S) 7

7.1 pH/redox electrode 7

7.2 Temperature sensor 7

7.3 Printer interface 8

7.4 Accumulator charging socket 8

8. Operation 8

8.1 Switching on and switching off 8

8.2 Operating buttons 8

8.3 Overview of functions 8

8.4 Configuration of the instrument 10

9. Photometrical measuring 12

9.1 General notes for handling the DIT 12

9.2 Reference adjustment 12

9.3 Operator guidance and advice for photometrical

measuring 12

9.4 Aluminium 13

9.5 Ammonium 14

9.6 Free chlorine, total chlorine and combined chlorine 14

9.7 Chloride 15

9.8 Chlorine dioxide 16

9.9 Determination of chlorine dioxide, free chlorine,

total chlorine and chlorite within the chlorine dioxide

determination 16

9.10 Chromium 17

9.11 Cyanide 18

9.12 Cyanuric acid 18

9.13 Iron 19

9.14 Fluoride 19

9.15 Hydrazine 20

9.16 Manganese 20

9.17 Nickel 21

9.18 Nitrate 21

9.19 Nitrite 22

9.20 Ozone (in absence of chlorine) 22

9.21 Ozone in the presence of total chlorine

(selective determination) 23

9.22 Phosphate 23

9.23 Photometrical determination of the pH value 24

10. pH measuring 24

10.1 Configuration 24

10.2 Unit of temperature 24

10.3 Automatic switching-off (auto off) 24

10.4 Calibration 25

10.5 Interrogation of calibration data 25

10.6 Measuring 25

11. Redox measuring 26

11.1 Configuration 26

11.2 Measuring 26

12. Maintenance and repair 26

12.1 Battery exchange (DIT-N/DIT-S) 26

12.2 Recharging the accumulator (DIT-S) 26

12.3 Cleaning 27

13. Error messages and error correction 27

13.1 Errors and defects of hardware and software 27

13.2 Error messages caused by measuring errors

or defective peripheral equipment 27

14. Disposal 27

1. Symbols used in this document

2. General information

These installation and operating instructions contain all

information important for users of the DIT Compact Photometers:

• technical data

• instructions on commissioning, use and maintenance

• safety information.

Should you require further information or should you encounter

problems occur that are not handled in sufficient depth in this

manual, please contact Grundfos Alldos.

We shall be pleased to support you with our comprehensive

know-how in the fields of measuring and control technology as

well as water treatment.

We always welcome suggestions on how to optimise our

installation and operating instructions to satisfy our customers.

2.1 Warranty

A warranty claim in accordance with our general terms of sale

and delivery is only valid if these requirements are complied with:

• The instrument has been used in accordance with the

information in this manual.

• The instrument has not been dismantled or handled

incorrectly.

• Repairs have only been carried out by authorised personnel.

• Only original parts have been used during repairs.

• Only components approved by Grundfos Alldos are used in

the entire system.

The following typical wear parts are excluded from the warranty:

• gaskets, O-rings, vials.

Warning

These complete installation and operating

instructions are also available on

www.Grundfosalldos.com.

Prior to installation, read these installation and

operating instructions. Installation and operation

must comply with local regulations and accepted

codes of good practice.

Warning

If these safety instructions are not observed,

it may result in personal injury!

Caution

If these safety instructions are not observed,

it may result in malfunction or damage to the

equipment!

Note

Notes or instructions that make the job easier

and ensure safe operation.

3. Identification

3.1 Nameplate

Fig. 1 DIT nameplate

3.2 Type key

4. Applications

The DIT Compact Photometer is dedicated for routine analysis in

water-treatment monitoring.

The instrument is available in three versions:

• The DIT-B allows photometrical determination of up to seven

parameters which are especially dedicated for pool-water

applications.

• The DIT-N allows photometrical determination of up to

11 parameters.

• The DIT-S allows photometrical determination of up to

18 parameters. Additionally, the pH value and the redox

potential can be measured. For protocolling the results,

a printer can be connected.

5. Safety

The photometer has been constructed and tested in accordance

with safety-protective measures for electronic equipment and has

left the works in perfect condition satisfying safety requirements.

5.1 Obligations of owner

The owner of the system is responsible for the following:

• compliance with country-specific safety regulations

• training of operating personnel

• provision of prescribed protective gear

• implementation of regular maintenance.

5.2 Avoidance of danger

If safe operation cannot be ensured any longer, the DIT Compact

Photometer is to be put out of service and safeguarded against

unintentional operation. This is the case under the following

circumstances:

• The DIT Compact Photometer shows visible damage.

• The DIT Compact Photometer seems to be inoperative.

• After a long storage time under unfavourable circumstances.

TM04 0348 0508

Pos. Description

1 Type designation

2 Model

3 Product name

4 Product number

5 Year and week of production

6 Country of origin

7 Marks of approval, CE mark, etc.

8 Serial number

Example: DIT -B C -PT GEF G

Model

DIT Test photometer

Applications

BPool water

S Drinking water

NUniversal

R Universal incl. reagents

Casing

C With suitcase

X Without suitcase

Electrodes

PT Portable pH electrode

RT Portable redox electrode

X No electrodes

Languages

GEF German/English/French (standard version)

GED German/English/Danish

GFD German/French/Dutch

Supply voltage

G 1 x 230 V, 50/60 Hz, European plug

I 9 V battery (models B and N only)

DIT-B C-X-X, GEF, I

310-055-10000

S/N: 07/63516

DIT, B, C, X, X, GEF, I

96609108P1107380763516

Warning

Do not dismantle the instrument components!

Cleaning, maintenance and repair must only be

carried out by authorised personnel!

6. Construction and function

6.1 Construction of the instrument

The DIT-N and DIT-B versions are powered by a 9 V monoblock

battery. For the S version, a rechargeable accumulator is used.

The multilingual plain-text display offers high operation

convenience. The user can choose English, German, French,

Dutch or Danish language (depending on software version).

Three operating modes can be selected:

• In normal mode, all analysis steps will be displayed.

• The expert mode for the proficient user shows shortened texts

and does not request every single step, which results in saving

of time.

• The professional mode activates the expert mode

permanently. The professional mode is switched on and off in

the configuration menu. It is used in all parameters.

See section 9.3.1 Carrying out the measuring.

Fig. 2 View of instrument (DIT-S)

TM03 6748 4506

6.2 Functional principle

The photometer operates according to the two-beam bi-frequency

principle with carrier-frequency technology. The sample is

transilluminated by two light beams of different frequency, both

modulated by the carrier frequency. This method, shown in fig. 3,

allows the perfect compensation of disturbing influences by

turbidity of the sample, external light and ageing of the light

sources.

By adding reagents to the water sample, a chemical reaction with

the substance that shall be determined is produced. The products

of the reaction cause a colouring of the sample. The intensity of

the colouring depends on the amount of the substance in the

sample. The absorption of the light depends on the intensity of

the colouring and is a measure of the concentration of the

substance.

Fig. 3 Functional principle (schematic)

6.3 Functioning of the electrochemical pH

determination and temperature measuring (DIT-S)

A single-rod electrode can be connected for electrochemical

measuring of the pH value. By using a high-resistance amplifier,

the signal will be evaluated and displayed. The influence of

temperature on the pH value can be compensated and displayed

by using electrodes with built-in thermocouple. Different types of

buffer solutions can be used for calibration.

With all versions, the pH value can also be determined

photometrically, but within a smaller measuring range.

6.4 Functioning of the electrochemical determination

of the redox potential (DIT-S)

The redox potential can be measured by using a single-rod redox

electrode. As this is a potential measuring, calibration is not

necessary.

6.5 Measuring ranges and tolerances

6.5.1 Photometrical measuring

TM03 6749 4506

Reference receiver

Vial

Measuring cell

LED light source

Measuring wavelength

Reference wavelength

Parameter

Version Measuring range Accuracy

B N S [mg/l] [% of value + x mg/l]

Aluminium x x x 0.02 - 0.5 ± (6 % + 0.02)

Ammonium – x x 0.2 - 3.0 ± (6 % + 0.2)

Chlorine (free and total) x x x 0.03 - 5.0 ± (6 % + 0.03)

Chloride – – x 1 - 25 ± (10 % + 1)

Chlorine dioxide x x x 0.03 - 10.0 ± (6 % + 0.03)

Chromium – – x 0.03 - 0.5 ± (6 % + 0.03)

Cyanide – – x 0.01 - 0.7 ± (6 % + 0.01)

Cyanuric acid x x x 1 - 200 ± (10 % + 1)

Iron x x x 0.1 - 1.2 ± (6 % + 0.1)

Fluoride – x x 0.1 - 2.0 ± (6 % + 0.1)

Hydrazine – – x 0.05 - 3.0 ± (10 % + 0.05)

Manganese – – x 0.05 - 4.0 ± (6 % + 0.05)

Nickel – – x 0.05 - 4.0 ± (6 % + 0.05)

Nitrate – x x 0.5 - 30 ± (10 % + 0.5)

Nitrite – x x 0.02 - 1.0 ± (6 % + 0.02)

Ozone x x x 0.02 - 3.0 ± (6 % + 0.02)

Phosphate – – x 0.07 - 4.5 ± (6 % + 0.07)

pH (photometrical) x x x pH 6 - pH 8.5 ± 0.15 pH

6.5.2 Electrochemical measuring (only DIT-S)

pH measuring

Measuring of redox potential

Temperature measuring

6.6 Technical data

6.6.1 DIT-N/DIT-B

6.6.2 DIT-S

Fig. 4 Connector pin assignment

Interface cable

7. Connections (DIT-S)

7.1 pH/redox electrode

For the connection of a pH or redox electrode, there is a coaxial

socket (B).

If no electrode is connected, the protecting cap must be screwed

onto the socket to prevent intrusion of humidity.

7.2 Temperature sensor

The temperature sensor is integrated in the pH electrode. It can

be connected using a banana plug to the corresponding socket

(A) to the left of the coaxial socket.

The instrument automatically recognises if an electrode with or

without temperature sensor is being used. If a temperature

sensor is used, it automatically switches to automatic

temperature compensation before pH measuring. Otherwise, the

temperature has to be measured in a different way and must be

entered manually. See section 10. pH measuring.

This socket need not be protected by a cap.

Measuring range 0-14 pH

Resolution 0.01 pH

Accuracy ± 0.03 pH

Temperature

compensation

Manual or automatic

Resolution 0.1 °C (1 °F)

Temperature range 0 °C to 80 °C (32 °F to 176 °F)

Two-point

calibration with

AUTO-READ

function

Sensitivity display Within –62 mV/pH to –50 mV/pH

Display of

asymmetry voltage

Within ± 60 mV

Error message for

leaving measuring

range

Stored standard

buffer solutions

(at 25 °C)

• 4.01 pH / 7.00 pH / 9.18 pH

(Grundfos Alldos)

• 4.01 pH / 6.86 pH / 9.18 pH

(DIN / NIST)

Measuring range ± 1190 mV

Resolution 1 mV

Accuracy

± 4 mV (within –700 mV to 700 mV),

± 7 mV (outside of –700 mV to 700 mV)

Error message for

leaving measuring

range

Measuring range 20 °C to 80 °C (–4 °F to 176 °F)

Resolution 0.1 °C (1 °F)

Accuracy

± 0.4 °C (within 5 °C to 70 °C)

± 1.0 °F (within 41 °F to 158 °F)

± 1.0 °C (outside of 5 °C to 70 °C)

± 2.0 °F (outside of 41 °F to 158 °F)

Display

LCD, alphanumeric, four lines, 10 signs

each

Operating

languages

English, German, French, Dutch, Danish

(depending on software version)

Optics

Two-beam bi-frequency principle with

carrier frequency technology

Enclosure material ABS

Enclosure class IP65

Dimensions 52 x 121 x 252 mm

Permissible

operating

temperature (unit)

+5 °C to +45 °C

Permissible storage

temperature (unit)

–20 °C to +70 °C

Permissible

humidity

90 % (non-condensing)

Vials ∅22 mm

Power supply

9 V monoblock battery, indication of

battery exchange

Weight About 600 g incl. battery

Automatic

switching-off

(power down)

After 45 seconds

Power supply

Rechargeable accumulator, indication of

low voltage if the voltage drops

below 6.8 V

Weight About 690 g incl. accumulator

Memory capacity

100 measuring results, acoustic signal

and display indication for full memory

Automatic

switching-off

(power down)

• After 45 seconds (photometrical

measuring)

• After 80 seconds (electrochemical

measuring)

Interface

RS-232C, 4800 baud, eight bits, one start

bit and one stop bit, no parity

TM03 6750 4506

Pin Description

1RxD

2TxD

3GND

4Free

Colour Conductor assignment

Brown RxD

White TxD

Blue GND

Note

The connections described below are only

available with the DIT-S version.

7.3 Printer interface

For protocolling the measuring results, a protocolling printer can

be connected to the RS-232C interface (C), which also allows

data transfer to a personal computer. See section

8.4.7 Configuration of the printer and storage of measuring

results (DIT-S).

If no cable is connected, the red protecting cap must be screwed

onto the socket.

7.4 Accumulator charging socket

This socket (D) serves for recharging the built-in accumulator.

See section 12.2 Recharging the accumulator (DIT-S).

If the power supply adapter is not connected, the red protecting

cap must be screwed onto the socket.

Fig. 5 Connections of DIT-S

8. Operation

8.1 Switching on and switching off

Press any button to switch on the DIT.

The instrument is designed with energy-saving CMOS

technology. To save the capacity of the battery or accumulator, an

automatic switching-off function has been integrated. This power-

down mode will be activated after 45 seconds (photometrical

measuring) or 80 seconds (electrochemical measuring, pH,

redox) if no button has been pressed meanwhile. By pressing any

button, the instrument will be activated and continues at the last

position of the program.

Therefore, there is no separate button for switching on or off the

instrument.

8.2 Operating buttons

There are four buttons for operating the instrument.

• The [Up] and [Down] buttons can be used to change between

the lines of the menus and pages.

• With [OK] the selected submenu or the selected function can

accessed.

• [Esc] leads back to the main menu and also interrupts

measuring.

Fig. 6 DIT photometer

8.3 Overview of functions

The whole menu tree is shown on the next page. After switching

on, the instrument continues in the same menu as before

switching off.

The cancel function, which is selected using [OK] like all other

functions, leads back to the previous menu level, and the [Esc]

button leads back to the main menu from every menu level

(except photometrical measuring).

In connection with photometrical measuring, the [Esc] button

leads back to the menu of the selected parameter (in the first

menu level).

Functions marked with *) and the following ones are only

available with the DIT-S.

Warning

The IP65 enclosure class only applies if the

protecting caps are screwed onto the sockets.

TM03 6751 4506

Pos. Description

A Temperature sensor

BpH/redox

CPrinter

D Accu charging

ABCD

TM03 6752 4506

Display

Buttons

Vial hole

Fig. 7 Overview of functions / menu tree

TM03 6753 4506

Main menu

photom.

First menu level Second menu level Third menu level

pH *)

redox *)

config

reference

aluminium

measure

cal

measure

configure

cancel

language

time

date

parameter

profi mod

cancel

...

<other

parameters>

...

config

cal data

cancel

unit

version

document. *)

measure

blanktest

zerocheck

cancel

ALLDOS

DIN/NIST

others

cancel

°C / °F

auto off

cancel

auto off

cancel

mg/l

ppm

cancel

inactive

active

cancel

off

cancel

printer

memory

config

cancel

off

cancel

RS-232C

printer

cancel

off

delete

cancel

8.4 Configuration of the instrument

Configuration means that certain features of the instrument can

be adjusted to the user's demand.

The operation with the four buttons is the same for all functions,

as described in section 8.2 Operating buttons.

8.4.1 Operating language

Select (starting from the main menu) the configuration menu

"config" with the [Up] and [Down] buttons. Press [OK] to access

this menu. After that, select "language" in the same way.

"D" means German, "GB" means English, "F" means French,

"NL" means Dutch and "DK" means Danish (available languages

depending on software version). Select the required language

with the [Up] and [Down] buttons, and press [OK] to confirm the

selection. The instrument returns to the previous menu level, and

all display messages will from now on be shown in the selected

language.

8.4.2 Real-time clock

With the menu item "time" in the configuration menu, the built-in

real-time clock can be set. This is necessary after battery

exchange (DIT-N/DIT-B) or after the accumulator has been totally

discharged (DIT-S).

The time shown in the display will be different from this example,

as the clock starts at "00:00:00" after battery exchange. The first

digit flashes and can be adjusted using the [Up] button. This only

works in ascending direction; after "9" it starts again with "0".

With the [Down] button, the next digit can be selected and then

adjusted in the same way. Confirm with [OK] after setting the

time. The instrument then returns to the configuration menu.

8.4.3 Date

This menu item can be used to set the day and the date.

Now the day flashes and can be set using the [Up] button.

The [Down] button can be used to select the other values and set

them in the same way. Confirm with [OK], after which the

instrument returns to the configuration menu.

8.4.4 Parameter

This menu item is used for taking single parameters out of the

menu "photom.". This is useful if not all parameters are needed at

any time, as it shortens the menu and saves operating time.

On demand, the parameters can be switched on again. When

selecting the menu item "parameter", the following display will

appear:

"active" means that the parameter is available in the

"photom." menu. Select using the [Up] and [Down] buttons, and

confirm the selection by pressing [OK]. Then the next parameter

will appear, which can be handled in the same way, etc. After the

last parameter, [OK] leads back to the configuration menu.

To finish the selection before that, select "cancel" and press [OK].

8.4.5 Unit

With this menu item it is possible to choose the unit in which the

results will appear. The units "mg/l" and "ppm" (parts per million)

are available.

Select the required unit, and confirm with [OK]. "cancel" leads

back to the configuration menu without having made any

changes.

8.4.6 Interrogation for hardware and software version

For service purposes, it is possible to look up the hardware and

software versions of the instrument. Select the menu item

"version" in the configuration menu.

This example means that the hardware is version 3.22 and the

software is version 2.58. Please keep in mind the numbers shown

on the display in case of service.

language

-> D

set time

02:13:07

set date

TUE

01/08/01

Note

In German, French, Danish and Dutch, the date is

shown as day/month/year. In English, it is shown

as month/day/year.

The switching between these two display modes

happens automatically when selecting the

corresponding language.

aluminium

inactive

-> active

cancel

unit

-> mg/l

ppm

cancel

Note

If the unit is changed after measuring, the results

will be printed with the present unit.

version

HW 3.22

SW 2.58

8.4.7 Configuration of the printer and storage of measuring

results (DIT-S)

In the configuration menu, the menu item "document." is used for

configuring the serial interface and to decide if the results will be

stored, printed or deleted.

Selection "printer"

"on" or "off" decide if the printer can be used for printing data.

When the result has been displayed and the [OK] button has

been pressed, the display will ask you if you want to print the

result.

The [Up] and [Down] buttons are used to select if the result

should be printed.The printing is started by pressing [OK].

Then the instrument returns to the parameter menu.

Selection "memory"

"on" and "off" decide if the results will be stored in the memory,

and "print" sends all data being stored to the printer.

"delete" erases all stored results, and "cancel" leads back to the

previous menu without having changed anything.

When the result has been displayed and the [OK] button has

been pressed, the display will ask you if you want to save the

result.

The [Up] and [Down] buttons are used to select if the result

should be saved. By pressing [OK] the saving will be executed.

Then the instrument returns to the parameter menu.

100 results can be stored. When reaching this, an error message

will appear and shortly after that the message "print memory".

The [Up] and [Down] buttons are used to select if the memory

contents should be printed. By pressing [OK], the printing will

start and the instrument returns to the parameter menu.

Selection "config":

If "RS-232C" is selected, the data will be sent to the serial

interface without control characters for the printer in ASCII format

and can be received by a personal computer.

If "printer" is selected, the data will be conditioned for a protocol

printer. At the end of each line, the control characters for line feed

(0Ahex) and carriage return (0Dhex) are inserted.

See section 13. Error messages and error correction.

Note

The functions described below are only available

for the DIT-S.

document

-> printer

memory

config

cancel

printer

-> on

off

cancel

-> yes

Note

The data can either be printed immediately or be

stored.

The selection "printer on" automatically defines

"memory off" and vice versa.

These two functions can both be switched off,

but they cannot be switched on simultaneously.

memory

-> on

off

delete

cancel

memory

-> yes

warning

-> memory is full

print memory

-> yes

config

-> RS-232C

printer

cancel

9. Photometrical measuring

9.1 General notes for handling the DIT

9.1.1 Handling the photometer

• Keep the vial hole clean. No reagents should get into the hole.

Clean the vial hole carefully with a dry and soft cloth.

• The instrument must be horizontal during measuring.

• Protect from direct light (sunlight)!

• Condensation water in the vial hole can provoke incorrect

measurements! Clean the vial hole carefully with a dry and

soft cloth.

• Do not use aggressive solvents.

See section 12.3 Cleaning.

9.1.2 Handling the vials

• Keep the vials clean. They can be cleaned with normal

cleaning products.

• Lime scum can be removed with diluted hydrochloric acid

(HCl 10 %).

• Scratched or opaque vials should be replaced.

• It is not necessary to cover the vials, but direct sunlight should

be avoided.

• Observe the vial inscriptions! Vials especially dedicated for the

determination of one parameter must not be used for other

analysis to avoid the carry-over of chemicals.

• Take care that the vial is dry on the outside! Clean the vial with

a dry and soft cloth before measuring. Beware of moisture if

handling very cold sample water! Moisture on the vial or in the

vial hole provokes incorrect measurements!

• Observe the preference direction of the vial (black vertical

marking).

9.1.3 Handling and dosing the reagents

• Observe the best-before date of the reagents. It is printed on

the packaging and must not be exceeded.

• Store the reagents at temperatures between 15 °C and 25 °C

(unless otherwise indicated). Otherwise, the quality and

durability will suffer.

• To obtain a uniform size of drops, hold the dropping bottle

vertically.

• Powder reagents must not get moist.

• Protect all reagents from light.

• Close the reagent bottles immediately after use to avoid

chemical reactions for example with oxygen or carbon dioxide

in the air.

• Before measuring, the vials must be rinsed with water to be

tested.

• Never interchange the covering caps of the reagent bottles.

This could lead to chemical reactions, resulting in unusability

of the reagents.

9.2 Reference adjustment

9.2.1 Reference

Before doing photometrical measuring, the instrument must be

adjusted to zero. This is necessary after commissioning, after

long periods of storage or after temperature variation (10 °C).

The basic factory adjustment will not be influenced. Fill a vial with

sample water without adding any reagents. Select "photom." in

the main menu and then the menu item "reference". The

instrument then asks the user to insert the vial. After pressing

[OK], the DIT does the zero-measuring. This is finished after

70 seconds, and the instrument returns to the "photom." menu.

9.2.2 Zero check

Before each measuring, the zero adjustment can be checked.

When having selected a parameter, it is possible to select

"zerocheck". The instrument asks the user to fill a vial with 10 ml

of the sample water and insert it. Confirm both operations by

pressing [OK], and the DIT does a quick checking of the zero

value. After measuring, the result is displayed in extinction units

(dgt). Ideally, it should be 0.000 dgt. If it is more than ± 0.007 dgt,

the reference adjustment described above must be repeated.

If the result is acceptable, the display will show "zerocheck o.k.",

and in case of major difference "zerockeck error".

If different parameters shall be determined in succession, this

zero check has to be executed before each measurement.

9.3 Operator guidance and advice for photometrical

measuring

The basic operating mode is the same for all photometrical

measurings.

9.3.1 Carrying out the measuring

Select the menu item "photom." in the main menu and then the

parameter to be determined. Then the options "measure",

"zerocheck", "cancel" and, if necessary, "blanktest" will appear.

"measure" leads to the measurement itself. If it is selected by

pressing [OK] once, all analysis steps will be requested by the

instrument and have to be confirmed by the user. All steps and

waiting times listed in the following sections will be shown.

Especially in connection with waiting for the reaction time, this is

very useful, as no other clock will be needed. After the waiting

time, an acoustic signal indicates that the vial can be inserted,

which has to be confirmed by pressing [OK]. Now the DIT does

the photometrical measuring and shows the result or, if

necessary, an error message. The end of the measurement is

also indicated by an acoustic signal. After pressing [OK] again,

the result can be printed or stored, and the instrument returns to

the parameter menu.

9.3.2 Expert mode and professional mode

If "measure" is selected by pressing [OK] twice, the instrument

changes to the expert mode. The step-by-step guidance will then

not be shown. This is useful for proficient users, as it shortens the

operating time. However, the reaction times must be kept!

The expert mode cannot be switched on permanently, but has to

be selected for each measurement by pressing [OK] twice. If the

so-called professional mode ("profi mode") is switched on in the

configuration menu, the expert mode described above is

continuously switched on.

Caution

This photometer is a highly sensitive measuring

instrument.

For maximum performance and lifetime, careful

operation of the instrument and its accessories is

necessary.

Avoid vibrations, direct sunlight and humidity.

Caution

Due to conversion of production, the dosing

prescriptions may change.

In case of doubt, observe the prescriptions

printed on the reagent bottles.

Caution

Only an correctly made reference will give a

correct measurement!

9.3.3 Blank test

For some parameters an additional blank test is necessary, as the

reagents have a certain inherent colour, which occurs even if

there is no co-reactant at all. The zero value described above is

based upon the characteristics of the system "photometer, vial

and sample" and therefore is the same for all parameters.

For doing the blank test, the measurement has to be executed

with the diluting water instead of the sample in order only to

determine the colouring caused not by the reaction. All analysis

steps, such as reagent-adding and waiting times, are the same.

It is also possible to choose either detailed operator guidance or

expert mode.

After the blank test, no result will be shown. It is, however, stored

by the instrument and will later be subtracted from the measuring

result.

See section 13. Error messages and error correction.

9.3.4 Dilution

If the measuring result exceeds the measuring range (the error

message "value exceed" is displayed), the sample water can be

diluted with distilled water. See section 6.5 Measuring ranges and

tolerances.

In this case, proceed as follows:

• At the step "fill in 10 ml sample" requested on the display, first

add 9 ml distilled water with the syringe.

• Then add 1 ml sample water with the syringe, close the vial

and shake.

• Continue with the measurement as requested on the display.

• Multiply the measuring result by 10: result in mg/l or ppm.

9.4 Aluminium

Reagent not for sea-water use!

Before determining the aluminium concentration, a blank

test has to be made. See section 9.3.3 Blank test.

9.4.1 Aluminium determination

1. Select "photom." in the main menu, and press [OK].

2. Select "aluminium", and press [OK].

3. Select "measure" or "blanktest", and press [OK].

4. Fill a standard vial with 10 ml of the water sample. In case of

blank test: 10 ml of the diluting water. Press [OK].

5. Add one level spoon (grey) of Al reagent 1, close the vial and

shake. Press [OK].

6. Add three drops of Al reagent 2, close the vial and shake.

Press [OK].

7. Add four drops of Al reagent 3, close the vial and shake.

Press [OK].

8. Wait for seven minutes.

9. Insert the vial, start the measurement with [OK], and read the

result.

– Result: aluminium concentration in mg/l or ppm.

10.Press [OK].

– Printer or memory being selected: Print or save result.

Measurement is finished.

– Printer or memory not being selected: Measurement is

finished.

Caution

The blank test is necessary after commissioning,

after battery exchange or recharging of a totally

discharged accumulator and before the use of

new reagent batches.

Caution

Carry out the dilution process very carefully in

order to guarantee the utmost accuracy.

Determination

method

Reaction of Al

with Chromazurol-S in

weakly acetate-buffered medium with

production of a red-violet colorant

Measuring range 0.02 to 0.5 mg/l Al

Reagent

temperature range

Higher than 25 °C

Analysis time About seven minutes

Number of

analyses per

reagent set

About 200

Warning

Reagent 2 contains dimethylsulfoxide.

R 36/38: Irritating to eyes and skin.

S 26: In case of contact with eyes, rinse

immediately with plenty of water and seek

medical advice.

Note

At storage under 20 °C the elements of reagent 2

crystallise. If that is the case, warm up the

reagent slightly and shake.

9.5 Ammonium

Reagent not for sea-water use!

Before determining the ammonium concentration, a blank

test has to be made. See section 9.3.3 Blank test.

9.5.1 Ammonium determination

1. Select "photom." in the main menu, and press [OK].

2. Select "ammonium", and press [OK].

3. Select "measure" or "blanktest", and press [OK].

4. Fill NH

vial with 10 ml of the water sample. In case of blank

test: 10 ml of the diluting water. Press [OK].

5. Add 1.2 ml of NH

reagent 1 with a small syringe (1.0 ml),

close the vial and shake. Press [OK].

6. Add two level micro-spoons (blue) of NH

reagent 2, close the

vial and shake. Press [OK].

7. Wait for five minutes.

8. Add 10 drops of NH

reagent 3, close the vial and shake.

Press [OK].

9. Wait for seven minutes.

10.Insert the vial, start the measurement with [OK], and read the

result.

– Result: ammonium concentration in mg/l or ppm.

11.Press [OK].

– Printer or memory being selected: Print or save result.

Measurement is finished.

– Printer or memory not being selected: Measurement is

finished.

9.6 Free chlorine, total chlorine and combined

chlorine

9.6.1 Free chlorine determination

1. Select "photom." in the main menu, and press [OK].

2. Select "Cl2 free", and press [OK].

3. Select "measure", and press [OK].

4. Put three drops of Cl

reagent 1 into vial Cl

-1. Press [OK].

5. Add one drop of Cl

reagent 2, close the vial and shake.

Press [OK].

6. Add 10 ml of the water sample, close the vial and shake.

Press [OK].

7. Insert the vial, start the measurement with [OK], and read the

result.

– Result: concentration of free chlorine in mg/l or ppm.

8. Press [OK].

– Printer or memory being selected: Print or save result.

Measurement is finished.

– Printer or memory not being selected: Measurement is

finished.

Determination

method

Reaction of ammonium with hypochlorite

via monochloroamine with thymole to a

blue indophenole

Measuring range 0.2 to 3.0 mg/l NH

Reagent

temperature range

15 °C to 25 °C

Analysis time About 12 minutes

Number of

analyses per

reagent set

About 250

Warning

Reagent 1 contains sodium hydroxide.

R 36/38: Irritating to eyes and skin.

S2: Keep out of the reach of children.

Warning

Reagent 3 contains sodium nitroprusside.

R 11: Highly flammable.

R 23/24/25: Toxic by inhalation, in contact with

skin and if swallowed.

S 7: Keep container tightly closed.

S 16: Keep away from sources of ignition -

No smoking.

Caution

Because of the sensitive reaction used for the

determination of ammonium, only the especially

dedicated vial with the inscription "NH

" may be

used.

This vial must not be used for any other analysis!

To avoid measuring errors, take care of extreme

cleanness when preparing the sample.

The syringe and spoon must carefully be rinsed

after the analysis in order to avoid carry-over of

chemicals.

Determination

method

Oxidation of dialkyl-p-phenylenediamine

by chlorine, HOCl and OCl, producing a

red-violet substance of the "Wurster's red"

type

Measuring range 0.03 to 5 mg/l Cl

Reagent

temperature range

15 °C to 25 °C

Analysis time About two minutes

Number of

analyses per

reagent set

About 350

Warning

Reagent 2 contains N,N-diethyl-1,4-

phenylenediaminesulfate.

R 21/22: Harmful in contact with skin and if

swallowed.

Caution

Observe the inscriptions on the vials in order to

avoid the carry-over of chemicals.

Vial Cl

-1 may only come into contact with Cl

reagent 1 and Cl

reagent 2.

Never put Cl

reagent 3 into vial Cl

-1.

Never determine free chlorine in vial Cl

-2.

Caution

Always determine the value of free chlorine

before determining total chlorine and combined

chlorine.

Note

The share of combined chlorine will not be

measured separately, but will be calculated

based on the difference of the total chlorine

concentration and the concentration of free

chlorine. For this calculation, the value of free

chlorine determined last will be used.

9.6.2 Total chlorine and combined chlorine determination

1. Select "photom." in the main menu, and press [OK].

2. Select "Cl2 total", and press [OK].

3. Select "measure", and press [OK].

4. Put three drops of Cl

reagent 1 into vial Cl

-2. Press [OK].

5. Add one drop of Cl

reagent 2, close the vial and shake.

Press [OK].

6. Add two drops of Cl

reagent 3, close the vial and shake.

Press [OK].

7. Add 10 ml of the water sample, close the vial and shake.

Press [OK].

8. Insert the vial, start the measurement with [OK], and read the

result.

– Result: concentration of total chlorine in mg/l or ppm.

9. Press [OK].

– Printer or memory being selected: Print or save result.

– The results for free, total and combined chlorine are

shown in the display in mg/l or ppm.

10.Press [OK]. Measurement is finished.

9.6.3 Alternative determination of total chlorine

The concentration of total chlorine can also be determined

immediately after the determination of free chlorine within the

same determination.

The result of this determination is less exact, but will be sufficient

in most cases.

1. Select "photom." in the main menu, and press [OK].

2. Select "Cl2 free", and press [OK].

3. Select "measure", and press [OK].

4. Put three drops of Cl

reagent 1 into vial Cl

-1. Press [OK].

5. Add one drop of Cl

reagent 2, close the vial and shake.

Press [OK].

6. Add 10 ml of the water sample, close the vial and shake.

Press [OK].

7. Insert the vial, start the measurement with [OK], and read

the result.

– Result: concentration of free chlorine in mg/l or ppm.

8. Press [OK].

– Printer or memory being selected: Print or save result.

Measurement is finished.

– Printer or memory not being selected: Measurement is

finished.

9. Put two drops of Cl

reagent 3 into vial Cl

-2.

10.Add the already prepared sample vial Cl

-1 of the

determination of free chlorine.

11.Wait for 45 seconds.

12.Select "Cl2 total", and press [OK].

13.Select "measure", and press [OK].

14.Insert the vial, start the measurement with [OK], and read

the result.

– Result: concentration of total chlorine in mg/l or ppm.

15.Press [OK].

- Printer or memory being selected: Print or save result.

– The results for free, total and combined chlorine are

shown in the display in mg/l or ppm.

16.Press [OK]. Measurement is finished.

9.7 Chloride

Reagent not for sea-water use!

Before determining the chloride concentration, a blank test

has to be made. See section 9.3.3 Blank test.

9.7.1 Chloride determination

1. Select "photom." in the main menu, and press [OK].

2. Select "chloride", and press [OK].

3. Select "measure" or "blanktest", and press [OK].

4. Fill a standard vial with 10 ml of the water sample. In case of

blank test: 10 ml of the diluting water. Press [OK].

5. Add six drops of Cl reagent 1, close the vial and shake.

Press [OK].

6. Add six drops of Cl reagent 2, close the vial and shake.

Press [OK].

7. Insert the vial, start the measurement with [OK], and read the

result.

– Result: chloride concentration in mg/l or ppm.

8. Press [OK].

– Printer or memory being selected: Print or save result.

Measurement is finished.

– Printer or memory not being selected: Measurement is

finished.

Determination

method

Mercury(II) ions form undissociated

mercury(II) chloride when combined with

chloride ions. Thiocyanate ions, set free of

mercury(II) thiocyanate, react with iron(II)

ions to a red colourant complex. The

intensity of the colouring grows with the

concentration of chloride ions.

Measuring range 1 to 25 mg/l Cl

Temperature range 15 °C to 25 °C

Number of

analyses per

reagent set

About 200

Warning

Reagent 1:

R 36/38: Irritating to eyes and skin.

S 2: Keep out of the reach of children.

S 26: In case of contact with eyes, rinse

immediately with plenty of water and seek

medical advice.

Warning

Reagent 2 contains mercury thiocyanate.

R 26/27/28: Very toxic by inhalation, in contact

with skin and if swallowed.

R 33: Danger of cumulative effects.

S 1/2: Keep locked up and out of reach of

children.

S 13: Keep away from food, drink and animal

feeding-stuffs.

S 28.1: After contact with skin, wash immediately

with plenty of water.

S 45: In case of accident or if you feel unwell,

seek medical advice immediately (show the label

where possible).

9.8 Chlorine dioxide

9.8.1 Chlorine dioxide determination

1. Select "photom." in the main menu, and press [OK].

2. Select "ClO2", and press [OK].

3. Select "measure", and press [OK].

4. Put three drops of Cl

reagent 1 into vial Cl

-1. Press [OK].

5. Add one drop of Cl

reagent 2, close the vial and shake.

Press [OK].

6. Add 10 ml of the water sample, close the vial and shake.

Press [OK].

7. Insert the vial, start the measurement with [OK], and read the

result.

– Result: concentration of chlorine dioxide in mg/l or

ppm.

8. Press [OK].

– Printer or memory being selected: Print or save result.

Measurement is finished.

– Printer or memory not being selected: Measurement is

finished.

9.9 Determination of chlorine dioxide, free chlorine,

total chlorine and chlorite within the chlorine

dioxide determination

9.9.1 Chlorine dioxide determination

1. Select "photom." in the main menu, and press [OK].

2. Select "ClO2", and press [OK].

3. Select "measure", and press [OK].

4. Put 10 drops of the additional reagent ClO

-1 into a standard

vial. This is not requested on the display.

5. Add 10 ml of the water sample, close the vial and shake.

This is not requested on the display. Press [OK].

6. Put three drops of Cl

reagent 1 into vial Cl

-1. Press [OK].

7. Put one drop of Cl

reagent 2 into vial Cl

-1, close the vial and

shake.

8. Put the already prepared sample from the standard vial into

vial Cl

-1, close the vial and shake. This is not requested on

the display. Press [OK] twice. Ignore the request for adding

water.

9. Insert the vial, start the measurement with [OK], read the

result, and note it as measured value A.

– Result: concentration of chlorine dioxide: A in mg/l or

ppm.

9.9.2 Free chlorine determination

1. Select "photom." in the main menu, and press [OK].

2. Select "ClO2", and press [OK].

3. Select "measure", and press [OK].

4. Put three drops of Cl

reagent 1 into vial Cl

-1. Press [OK].

5. Add one drop of Cl

reagent 2, close the vial and shake.

Press [OK].

6. Add 10 ml of the water sample, close the vial and shake.

7. Insert the vial, start the measurement with [OK], read the

result, and note it as measured value B.

– Result: concentration of free chlorine:

(B-A) x 0.53 in mg/l or ppm.

Determination

method

Oxidation of dialkyl-p-phenylenediamine

by chlorine dioxide, producing a red-violet

substance of the "Wurster's red" type

Measuring range 0.03 to 10 mg/l ClO

Reagent

temperature range

15 °C to 25 °C

Analysis time About two minutes

Number of

analyses per

reagent set

About 350

Warning

Reagent 2 contains N,N-diethyl-1,4-

phenylenediaminesulfate.

R 21/22: Harmful in contact with skin and if

swallowed.

Note

For this determination, the chlorine reagent set is

required.

Note

The chlorine reagent set and the additional

reagents ClO

-1 and ClO

-2 are required for the

following determinations.

Note

These determinations are additional features and

can all be made within the menu item "ClO2".

Therefore all analysis steps, for which the

additional reagents are required, are not

requested by the display.

Add these reagents according to the instructions

given here and ignore the display texts. If

possible, use the expert mode to avoid

confusion.

Note

By adding liquid reagents, the concentration of

the substance to be measured will be reduced.

For the chlorine dioxide determination, this is

already being considered by the instrument. The

additional dilution by adding the additional

reagent ClO

-1 is about 4 % and can be

neglected.

Caution

Observe the vial inscriptions exactly.

Note

It is possible to save and print the results.

Note, however, that "ClO2" will be printed as

parameter.

9.9.3 Total chlorine determination

1. Select "photom." in the main menu, and press [OK].

2. Select "ClO2", and press [OK].

3. Select "measure", and press [OK].

4. Put three drops of Cl

reagent 1 into vial Cl

-2. Press [OK].

5. Add one drop of Cl

reagent 2, close the vial and shake.

6. Add one micro-spoon of the additional reagent ClO

-2, close

the vial and shake. This is not requested on the display.

Press [OK].

7. Add 10 ml of the water sample, close the vial and shake.

Press [OK].

8. Insert the vial, start the measurement with [OK], read the

result, and note it as measured value C.

– Result: total chlorine concentration: C x 0.53 in mg/l or

ppm.

9.9.4 Chlorite (ClO

) determination

1. Select "photom." in the main menu, and press [OK].

2. Select "ClO2", and press [OK].

3. Select "measure", and press [OK].

4. Put two drops of Cl

reagent 2 into vial Cl

-2. This is not

requested on the display. Press [OK].

5. Add one micro-spoon of the additional reagent ClO

-2, close

the vial and shake. This is not requested on the display.

Press [OK].

6. Add 10 ml of the water sample, close the vial and shake.

Press [OK].

7. Wait for three minutes. This is not requested on the display.

8. Add six drops of Cl

reagent 1, close the vial and shake.

This is not requested on the display.

9. Insert the vial, start the measurement with [OK], read the

result, and note it as measured value D.

– Result: chlorite concentration:

(D-C-(4xA)) x 0.25 in mg/l or ppm.

9.10 Chromium

Before determining the chromium concentration, a blank test

has to be made. See section 9.3.3 Blank test.

9.10.1 Chromium determination

1. Select "photom." in the main menu, and press [OK].

2. Select "chromium", and press [OK].

3. Select "measure" or "blanktest", and press [OK].

4. Fill a standard vial with 10 ml of the water sample. In case of

blank test: 10 ml of the diluting water. Press [OK].

5. Add one level spoon (grey) of Cr reagent 1, and close the vial.

Press [OK].

6. Shake well for 30 seconds. Some residual matter does not

disturb.

7. Add 12 drops of Cr reagent 2, close the vial and shake for

about 30 seconds. Press [OK].

8. Wait for 10 minutes.

9. Insert the vial, start the measurement with [OK], and read the

result.

– Result: chromium concentration in mg/l or ppm.

10.Press [OK].

– Printer or memory being selected: Print or save result.

Measurement is finished.

– Printer or memory not being selected: Measurement is

finished.

Determination

method

Chromate ions and dichromate ions are

reduced by diphenylcarbazide to

chromium(III) ions, producing a red-violet

complex with the reagent. The intensity of

the colouring grows with the concentration

of chromium(VI) in the sample

Measuring range 0.03 to 5 mg/l Cr

Reagent

temperature range

15 °C to 25 °C

Analysis time About 11 minutes

Number of

analyses per

reagent set

About 150

Warning

Reagent 2 contains hydrofluoric acid.

R 26/27/28: Very toxic by inhalation, in contact

with skin and if swallowed.

R 35: Causes severe burns.

S 7/9: Keep container tightly closed and in a well-

ventilated place.

S 26: In case of contact with eyes, rinse

immediately with plenty of water and seek

medical advice.

S 36/37: Wear suitable protective clothing and

gloves.

S 45: In case of accident or if you feel unwell,

seek medical advice immediately (show the label

where possible).

9.11 Cyanide

Reagent not for sea-water use!

9.11.1 Cyanide determination

1. Select "photom." in the main menu, and press [OK].

2. Select "cyanide", and press [OK].

3. Select "measure", and press [OK].

4. Fill a standard vial with 10 ml of the water sample. Press [OK].

5. Add two level spoons (green) of CN reagent 1, close the vial

and shake. Press [OK].

6. Add two level spoons (green) of CN reagent 2, close the vial

and shake. Press [OK].

7. Add six drops of CN reagent 3, close the vial and shake.

Press [OK].

8. Wait for five minutes.

9. Insert the vial, start the measurement with [OK], and read the

result.

– Result: cyanide concentration in mg/l or ppm.

10.Press [OK].

– Printer or memory being selected: Print or save result.

Measurement is finished.

– Printer or memory not being selected: Measurement is

finished.

9.12 Cyanuric acid

9.12.1 Cyanuric acid determination

1. Select "photom." in the main menu, and press [OK].

2. Select "cyanuracd", and press [OK].

3. Select "measure", and press [OK].

4. Fill a standard vial with 10 ml of the water sample. Press [OK].

5. Add four drops of Cy reagent 1. Press [OK].

6. Add one level spoon (green) of Cy reagent 2, close the vial

and shake. Press [OK].

7. Wait for one minute.

8. Insert the vial, start the measurement with [OK], and read the

result.

– Result: cyanuric acid concentration in mg/l or ppm.

9. Press [OK].

– Printer or memory being selected: Print or save result.

Measurement is finished.

– Printer or memory not being selected: Measurement is

finished.

10.Rinse the vial after measurement and clean it with the brush,

as the reagent causes a slight opaqueness.

Determination

method

After adding CN reagent 1, chlorine is set

free which reacts with cyanide ions to

chlorine cyane. This reacts with pyridine to

glutaconedialdehyde, which then

condensates with 1,3-dimethyl barbituric

acid to a violet colourant

Measuring range 0.01 to 0.07 mg/l CN

Reagent

temperature range

15 °C to 25 °C

Analysis time About five minutes

Number of

analyses per

reagent set

About 200

Warning

Reagent 1:

R36/37/38: Irritating to eyes, respiratory system

and skin.

S 2: Keep out of the reach of children.

S 7: Keep container tightly closed.

Warning

Reagent 3 contains pyridine.

R 11: Highly flammable.

R20/21/22: Harmful by inhalation, in contact with

skin and if swallowed.

S 26: In case of contact with eyes, rinse

immediately with plenty of water and seek

medical advice.

S 28.1: After contact with skin, wash immediately

with plenty of water.

Determination

method

After setting a certain pH value, a

precipitation reaction takes place. The

opaqueness caused by this is proportional

to the concentration of isocyanuric acid.

This measurement does not use the two-

beam principle, as the opaqueness should

of course not be compensated in this case

Measuring range 1-200 mg/l C

Reagent

temperature range

15 °C to 25 °C

Hardness of

sample water

Max. 25 °dH

Analysis time About two minutes

Number of

analyses per

reagent set

About 200

Note

According to the German decree for hazardous

material (GefStoffV), the reagents used here need

not be declared.

Rinse the vial after measuring and clean it with a

brush, as the reagent causes a slight

opaqueness.

9.13 Iron

9.13.1 Iron determination

1. Select "photom." in the main menu, and press [OK].

2. Select "iron", and press [OK].

3. Select "measure", and press [OK].

4. Fill the Fe vial with 10 ml of the water sample. Press [OK].

5. Add one spoon (grey) of Fe reagent 1, close the vial and

shake. Press [OK].

6. Add 10 drops of Fe reagent 2, close the vial and shake.

Press [OK].

7. Add 10 drops of Fe reagent 3, close the vial and shake.

Press [OK].

8. Wait for one minute.

9. Insert the vial, start the measurement with [OK], and read the

result.

– Result: iron concentration in mg/l or ppm.

10.Press [OK].

– Printer or memory being selected: Print or save result.

Measurement is finished.

– Printer or memory not being selected: Measurement is

finished.

9.14 Fluoride

Before determining the fluoride concentration, a blank test

has to be made. See section 9.3.3 Blank test.

9.14.1 Fluoride determination

1. Select "photom." in the main menu, and press [OK].

2. Select "fluoride", and press [OK].

3. Select "measure" or "blanktest", and press [OK].

4. Fill a standard vial with 10 ml of the water sample. In case of

blank test: 10 ml of the diluting water. Press [OK].

5. Add 2 ml fluor reagent 1 (with the 1-ml syringe), close the vial

and shake. Press [OK].

6. Wait for one minute.

7. Insert the vial, start the measurement with [OK], and read the

result.

– Result: fluoride concentration in mg/l or ppm.

8. Press [OK].

– Printer or memory being selected: Print or save result.

Measurement is finished.

– Printer or memory not being selected: Measurement is

finished.

9. Rinse the syringe well after the determination.

Determination

method

Iron(III) ions are reduced to iron(II) ions.

The iron(II) ions react with 2,4,6-tri-2-

pyridyl-1,3,5-triazine in an acetate-

buffered solution producing a blue

colourant complex

Measuring range 0.1 to 1.2 mg/l Fe

Reagent

temperature range

15 °C to 25 °C

Analysis time About one minute

Number of

analyses per

reagent set

About 200

Caution

Because of the sensitive reaction used for the

determination of iron, only the especially

dedicated vial with the inscription "Fe" may be

used.

This vial must not be used for any other analysis!

To avoid measuring errors, take care of extreme

cleanness when preparing the sample.

Determination

method

Fluoride determination is executed

according to the SPADNS method.

Fluoride reacts with a red zirconium

colourant. With a part of the zirconium,

fluoride forms a colourless complex,

leading to bleaching of the colour

proportional to the fluoride concentration

Measuring range 0.1 to 2.0 mg/l F

–

Reagent

temperature range

15 °C to 25 °C

Analysis time About two minutes

Number of

analyses per

reagent set

About 250

Warning

Reagent 1 contains hydrochloric acid.

R 22: Harmful if swallowed.

R 34: Causes burns.

R 37: Irritating to respiratory system.

S 2: Keep out of the reach of children.

S 26: In case of contact with eyes, rinse

immediately with plenty of water and seek

medical advice.

S 28.1: After contact with skin, wash immediately

with plenty of water.

S 45: If you feel unwell, seek medical advice

immediately (show the label where possible).

9.15 Hydrazine

9.15.1 Hydrazine determination

1. Select "photom." in the main menu, and press [OK].

2. Select "hydrazine", and press [OK].

3. Select "measure", and press [OK].

4. Fill a standard vial with 10 ml of the water sample. Press [OK].

5. Add 10 drops of Hy reagent 1, close the vial and shake.

Press [OK].

6. Add five drops of Hy reagent 2, close the vial and shake.

Press [OK].

7. Wait for five minutes.

8. Insert the vial, start the measurement with [OK], and read the

result.

– Result: hydrazine concentration in mg/l or ppm.

9. Press [OK].

– Printer or memory being selected: Print or save result.

Measurement is finished.

– Printer or memory not being selected: Measurement is

finished.

9.16 Manganese

9.16.1 Manganese determination

1. Select "photom." in the main menu, and press [OK].

2. Select "manganese", and press [OK].

3. Select "measure", and press [OK].

4. Fill a standard vial with 10 ml of the water sample. Press [OK].

5. Add four drops of Mn reagent 1, close the vial and shake.

Press [OK].

6. Add two drops of Mn reagent 2, close the vial and shake.

Press [OK].

7. Wait for two minutes.

8. Add two drops of Mn reagent 3, close the vial and shake.

Press [OK].

9. Wait for five minutes.

10.Insert the vial, start the measurement with [OK], and read the

result.

– Result: mangenese concentration in mg/l or ppm.

11.Press [OK].

– Printer or memory being selected: Print or save result.

Measurement is finished.

– Printer or memory not being selected: Measurement is

finished.

Determination

method

Hydrazine reacts with 4-(dimethylamino)-

benzaldehyde in an acid solution to yellow

4-(dimethylamino)-benzaldehydrazine

Measuring range 0.05 to 3.0 mg/l N

Reagent

temperature range

15 °C to 25 °C

Analysis time About six minutes

Number of

analyses per

reagent set

About 200

Warning

Reagent 1 contains sulphuric acid.

R 35: Causes severe burns.

S 26: In case of contact with eyes, rinse

immediately with plenty of water and seek

medical advice.

S 30: Never add water to this product.

Warning

Reagent 2 contains dimethylsulfoxide.

R 36/38: Irritating to eyes and skin.

S 26: In case of contact with eyes, rinse

immediately with plenty of water and seek

medical advice.

Determination

method

Reaction of manganese(II) ions with

formaldoxime in the presence of

atmospheric oxygen, producing a red-

brown colourant complex

Measuring range 0.05 to 4.0 mg/l Mn

Reagent

temperature range

15 °C to 25 °C

Analysis time Seven minutes

Number of

analyses per

reagent set

About 220

Warning

Reagent 1:

R36/37/38: Irritating to eyes, respiratory system

and skin.

S 2: Keep out of the reach of children.

Warning

Reagent 2 contains formaldehyde.

R 45: May cause cancer.

R 43: May cause sensitisation by skin contact.

S 23.4: Do not breathe vapour.

S 37: Wear suitable gloves.

Warning

Reagent 3 contains hydroxylammonium chloride.

R20/22: Harmful by inhalation and if swallowed.

R36/38: Irritating to eyes and skin.

S 2: Keep out of the reach of children.

S 13: Keep away from food, drink and animal

feeding-stuffs.

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Grundfos DIT Installation And Operating Instructions Manual

Brand: Grundfos

Model: DIT

Category: Measuring, testing & control

Type: Installation And Operating Instructions Manual

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Grundfos DIT Installation And Operating Instructions Manual

Grundfos DIT Installation And Operating Instructions Manual

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