wtw TresCon NOx-N/SAK Operating instructions

ba43110e05 01/2011

TresCon

Analyzer module NOx-N

Operating Manual

TresCon N0x-N

Ser.-Nr. 00110020

WTW 82362 Weilheim Made in Germany

TresCon NOx-N

Reinigungslösung

Cleaning Solution

Ablauf

V2

Thermoblock

Probe

Sample

V1

H O dest.

2

blau

blue

blau

blue

rot

red

Pumpschlauch Standard/Probe

blau / blau / blau

Pump Tube Standard/Sample

blue / blue / blue

rot

red

P3

P1

NOx-N

ba43110e05 01/2011

Target group This manual is intended for all persons who are familiar with the

installation, operation and maintenance of WTW analyzers.

Detailed information on the previous experience required and the

qualification of the user are given in the chapter, S

AFETY, on page 2-1

in the T

ERMINAL volume of this manual.

Copyright

Reprinting - even as excerpts - is only allowed with the explicit written

authorization of WTW GmbH, Weilheim.

Printed in Germany.

NOx-N List of contents

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TresCon NOx-N - List of contents

1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

1.1 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-2

1.2 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

1.2.1 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . 3-5

1.2.2 Retrofitting the TresCon NOx-N . . . . . . . . . . . . . 3-5

1.2.3 Connecting up the TresCon NOx-N . . . . . . . . . 3-10

1.2.4 Initial commissioning . . . . . . . . . . . . . . . . . . . . . 3-13

1.3 Removal from service . . . . . . . . . . . . . . . . . . . . . . . . . 3-14

1.4 Instrument parameters . . . . . . . . . . . . . . . . . . . . . . . . . 3-15

2 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

2.1 Measuring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3

2.2 Triggering a zero point calibration (AutoCal) . . . . . . . . . 4-5

2.3 Displaying calibration data . . . . . . . . . . . . . . . . . . . . . . . 4-6

2.4 Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

2.5 Displaying/changing the AutoCal parameters . . . . . . . . 4-8

2.6 Displaying/changing AutoCleanParameters . . . . . . . . . 4-10

2.7 Manual correction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12

2.8 Displaying/changing the display parameter . . . . . . . . . 4-16

2.9 Displaying/changing the attenuation parameters . . . . . 4-18

2.10 Displaying/changing the interval program parameters . 4-20

2.11 Displaying/changing the AutoAdapt parameters . . . . . 4-23

2.12 Displaying/changing the measuring interval . . . . . . . . . 4-25

2.13 Dilution parameter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-27

3 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

3.1 Starting the AutoClean procedure . . . . . . . . . . . . . . . . . 5-3

3.2 Filling the system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-4

3.3 Replenishing the cleaning solution . . . . . . . . . . . . . . . . . 5-7

3.4 Replenishing dist. H2O . . . . . . . . . . . . . . . . . . . . . . . . . 5-9

3.5 Emptying the system . . . . . . . . . . . . . . . . . . . . . . . . . . 5-11

3.6 Displacing/replacing pump tubings . . . . . . . . . . . . . . . 5-14

3.6.1 Replacing the pump tubings . . . . . . . . . . . . . . . 5-16

3.6.2 Displacing the pump tubings . . . . . . . . . . . . . . . 5-21

3.7 Replacing the tubing system . . . . . . . . . . . . . . . . . . . . 5-25

3.8 Displaying/changing service intervals . . . . . . . . . . . . . 5-31

3.9 Viewing calibration data of the multi-point calibration . 5-33

List of contents NOx-N

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3.10 Triggering a multi-point calibration . . . . . . . . . . . . . . . .5-35

3.11 Switching Auto Flow on/off . . . . . . . . . . . . . . . . . . . . . .5-42

4 What to do if... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

4.1 Error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-1

4.2 Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4

4.3 Service messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-5

5 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

6 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1

6.1 Accessories and material subject to wear . . . . . . . . . . .8-1

6.2 Pressure sensors and messages . . . . . . . . . . . . . . . . . .8-2

6.3 RS commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-3

6.4 Instrument activities . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-7

7 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1

NOx-N Overview

1 - 1

ba43110e05 01/2011

1Overview

This operating manual has a modular structure, i. e. it contains a

separate operating manual for the individual components of the

multiparameter analyzer (see Fig. 1-1). This volume covers the

operation of the TresCon NOx-N measuring module (highlighted in

gray in Fig. 1-1).

Fig. 1-1 Structure of the operating manual (example)

Note

Please read chapter 2, S

AFETY, in volume 1, TERMINAL, of this operating

manual before starting to work with the measuring module.

Structure of the

operating manual

Volume 1

TresCon,

Terminal

Operating

manual

Volume 2

TresCon

Module 1

Volume 3

TresCon

Module 2

Volume 4

TresCon

NOx-N

Terminal

TresCon

Module 1

TresCon

Module 2

TresCon

NOx-N

TresCon analyzer

Overview NOx-N

1 - 2

ba43110e05 01/2011

1.1 Function

The TresCon NOx-N analyzing module operates according to the

photometric UV absorption procedure. This is used to detect nitrate

(NO

3

-

). As this measuring method cannot differentiate between nitrate

and nitrite ions (NO

2

-

), a cumulative value (NOx-N) is calculated if any

nitrate is present. A 4-beam photometer is used. It grants the highest

stability and absolute accuracy. A WTW background correction

procedure ensures high accuracy - even in highly colored samples.

Measurement is performed without any additional reagents.

The following points describe the fundamental features of the TresCon

NOx-N:

z AutoCal

TresCon NOx-N performs an automatic zero-point calibration

(AutoCal) so that the instrument can always maintain its high degree

of absolute accuracy.

z AutoClean

The TresCon NOx-N can clean the entire analyzer system itself so

that the user only has to perform a minimum amount of

maintenance.

z AutoFlow

The TresCon NOx-N can monitor the entire analyzer system itself so

it can measure fluid levels and provide early warnings and

instructions to the operator to replace specific chemicals.

z AutoAdapt

The TresCon NOx-N optimizes its measuring interval according to

the current change in the measured value. As a result, reagent

consumption is reduced to a minimum.

z AutoTherm

The TresCon NOx-N automatically checks and regulates the

temperature of the measuring block. This ensures that the

instrument always functions safely.

z Interfaces

The TresCon NOx-N is equipped with all the digital and analog

interfaces required by the industry. Thus, a standard connection is

possible to digital interfaces (RS232 and RS485), analog interfaces

(0/4-20 mA) and PLC interfaces (12 relay contacts).

Note

Please read chapters 2 S

AFETY and 5 OPERATIONin volume 1,

T

ERMINAL, of this operating manual. It contains basic instructions.

NOx-N Overview

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ba43110e05 01/2011

Fig. 1-2 Schematic diagram

Component (quantity) Designation

Valves (2) V1, V2

Pumps (1) P1 A

Pressure sensors (2) P1, P2

Schematic diagram

Standard/sample pump tubing: blue/blue/blue

Reinigungslösung

Cleaning solution

H2O dest.

H2O dist.

Ablauf

Outlet

V3

V2

blau

blue

blau

blue

rot

red

rot

red

Probe

Sample

Thermoblock

P1

P3

Configuration

Overview NOx-N

1 - 4

ba43110e05 01/2011

Control LED A light emitting diode located on the measuring block provides the

following information:

TresCon N0x-N

Ser.-Nr. 00110020

WTW 82362 Weilheim Made in Germany

TresCon NOx-N

Reinigungslösung

Cleaning Solution

Ablauf

V2

Thermoblock

Probe

Sample

V1

H O dest.

2

blau

blue

blau

blue

rot

red

Pumpschlauch Standard/Probe

blau / blau / blau

Pump Tube Standard/Sample

blue / blue / blue

rot

red

P3

P1

Control LED

Photometer block

P1A

V1 (back side)

V2 (back side)

View of the TresCon

NOx-N

LED illuminates Meaning

red, continuous Malfunction of any type

green, continuous A service is being performed on the

measuring module or a designation is being

given to the measuring module (terminal

software)

green, flashing System OK

NOx-N Overview

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1.2 Commissioning

1.2.1 Scope of delivery

When the analyzer is delivered, it already has individual analyzer

modules integrated in it and is ready for operation.

The TresCon NOx-N is available as a retrofit kit with the following scope

of delivery:

z ON 210: TresCon NOx-N measuring module

z Operating manual to be added to the main folder

z Chemicals

– S/ AI - N211: 10 l standard A-I (zero standard, dist. H2O)

– C/ N211: 1.5 l cleaning solution

z 2 Wpack/ N211: set of replacement tubes

z TC/ÜB 1: overflow vessel

z 1 lid for standard A-I (zero standard, dist. H2O), red

z 1 lid for cleaning solution, blue

Safety datasheets The current safety datasheets for all chemicals and solutions used can

be found on the Internet under www.WTW.com

.

1.2.2 Retrofitting the TresCon NOx-N

This section is only necessary if the TresCon NOx-N was purchased as

a retrofit kit.

Preparatory

activities

Installing the TresCon NOx-N in a measuring system can

– depending

on the configuration

– necessitate various preparations:

z Permeate supply:

Setting up a separate permeate supply (with its own catch location)

or connecting it to an existing permeate supply (catch location with

further analyzer modules)

z Chemicals:

If necessary, a larger tray can be mounted on the mounting stand of

TresCon for the chemical containers.

Note

Read the I

NSTALLATION section in the TERMINAL volume of the operating

manual before starting the retrofit!

Overview NOx-N

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ba43110e05 01/2011

Fig. 1-3 Remove the cover plate

1 Switch off the TresCon at the power switch (on the mounting

stand).

2 Open the door of the TresCon.

3 Undo the screws (B) of the dummy plate at the mounting

location (see Fig. 1-3). The screws and nuts are required in

step 5!

4 Remove the dummy plate at the mounting location.

Installing the analyzer

module

Pumpschlauch Standard/Probe

blau / blau / blau

Pumpschlauch Reagenz

orange / gelb / orange

PumpTube Standard/Sample

blue / blue / blue

PumpTube Reagent

orange / yellow / orange

TresCon PO4-P

Reinigungslösung

Cleaning Solution

HO dest.

2

Standard B

Reagenz

Reagent

Ablauf

blau

blue

V3

V2 V4

Thermoblock

Probe

Sample

V1

gelb

yellow

orange

grün

green

blau

blue

rot

red

grün

green

P1 P2

P3

TresCon P04-P

Ser.-Nr. 00110010

WTW82362 Weilheim Made in Germany

TresCon

10 fixing screws (B)

NOx-N Overview

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ba43110e05 01/2011

Fig. 1-4 Installing the TresCon NOx-N measuring module

5 Place the TresCon NOx-N in the mounting frame and screw it

into place with the 10 screws (B).

6 Undo the screws (A) of the mounting frame (see Fig. 1-4).

7 Carefully tilt out the mounting frame forwards.

Pumpschlauch Standard/Probe

blau / blau / blau

Pumpschlauch Reagenz

orange / gelb / orange

PumpTube Standard/Sample

blue / blue / blue

PumpTube Reagent

orange / yellow / orange

TresCon PO4-P

Reinigungslösung

Cleaning Solution

HO dest.

2

Standard B

Reagenz

Reagent

Ablauf

blau

blue

V3

V2 V4

Thermoblock

Probe

Sample

V1

gelb

yellow

orange

grün

green

blau

blue

rot

red

grün

green

P1 P2

P3

TresCon P04-P

Ser.-Nr. 00110010

WTW82362 Weilheim Made in Germany

TresCon

AA

TresCon N0x-N

Ser.-Nr. 00110020

WTW82362 Weilheim Made in Germany

TresCon NOx-N

Reinigungslösung

Cleaning Solution

Ablauf

V2

Thermoblock

Probe

Sample

V1

HO dest.

2

blau

blue

blau

blue

rot

red

Pumpschlauch Standard/Probe

blau / blau / blau

PumpTube Standard/Sample

blue / blue / blue

rot

red

P3

P1

10 fixing screws (B)

Overview NOx-N

1 - 8

ba43110e05 01/2011

Note

The number (1...3) of the open socket must agree with the position of

the TresCon NOx-N in the frame (see Fig. 1-5).

Fig. 1-5 Numbers of the mounting slots

Fig. 1-6 Plug connector on the back of the TresCon NOx-N

8 Plug the open cable connector of the TresCon NOx-N into the

open socket with the internal number of the mounting slot.

Cable connection

Terminal

1 2

3

Internal number

Mounting slots

TresCon

Plug

NOx-N Overview

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ba43110e05 01/2011

Inside diameter (ID) of outlet tube: 10 mm

Inside diameter (ID) of ventilation tube: 3 mm

Fig. 1-7 Outlet adapter

9 Use scissors to cut the outlet and ventilation tubes to a suitable

length for the mounting slot (see table).

Mounting slot 123

Length 0.80 m 1.00 m 1.20 m

10 Connect the open outlet tubing of the TresCon NOx-N with the

outlet adapter inside the enclosure (see Fig. 1-7).

11 Also connect the ventilation tube to the adapter.

12 Carefully swing the mounting frame back into place.

13 Fix the mounting frame in place with the two screws (A) as

shown in Fig. 1-4.

Connecting the outlet

Tube dimensions

Adapter for the outlet

(Inside enclosure floor)

Outlet tube

(1 per module)

Ventilation tube

(1 per module)

Overview NOx-N

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ba43110e05 01/2011

1.2.3 Connecting up the TresCon NOx-N

This section describes how to connect the permeate supply, outlet and

chemicals.

Warning

Only trained personnel is allowed to work on the analyzing section.

Always take safety precautions when handling chemicals and comply

with the relevant regulations. This applies in particular to the warning

instructions on the chemical containers and in the safety datasheets.

Always use protective equipment!

Fig. 1-8 Connecting the permeate supply

Note

If the TresCon NOx-N measuring module is to be connected to an

overflow vessel that is already installed (measuring several parameters

at a single sample catch location), the overflow vessel at this position

must have 3 permeate connecting pieces. If this is not the case, replace

the overflow vessel.

If the TresCon NOx-N is to measure a new sample location, another

overflow vessel must be mounted.

1 Feed the permeate tubing of the TresCon NOx-N (black, ID =

1.5 mm) through the hole drilled in the bottom of the enclosure.

2 Stick the permeate tubing into the overflow vessel provided.

Wear protective

goggles

Wear protective

gloves

Wear protective

clothing

Connecting the

permeate supply

Enclosure base

To the overflow vessel

Drilled hole

NOx-N Overview

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ba43110e05 01/2011

Color coding

of the consumables

The tubes of the consumables are nontransparent and are color coded:

Fig. 1-9 Color coding

3 Push the tubes for dist. H2O and cleaning solution through the

holes drilled in the bottom of the enclosure.

Connecting the supply

of consumables

red

blue

red Dist. H2O

blue Cleaning solution

Vent

Color Coding

Overview NOx-N

1 - 12

ba43110e05 01/2011

Connecting the cleaning

solution

Cleaning solution causes severe corrosion

Do not allow this substance to get into the hands of children. Wear

suitable protective gloves and goggles/face mask when working with

this substance.

If this substance gets into the eyes, rinse thoroughly with water and

consult a doctor.

Caution

Only use distilled water without any contamination (softener or similar)!

Dist. H2O is also used for zero point calibration. Contaminated dist.

H2O causes incorrect measurement results.

4 Briefly shake the closed container with cleaning solution.

5 Place a container of cleaning solution on the tray.

6 Connect the (blue) screw cap with the (blue) suction hose (see

Fig. 1-9).

7 Place a filled container for dist. H2O on the tray.

8 Attach the (red) screw cap to the (red) suction hose.

Connecting dist. H2O

NOx-N Overview

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ba43110e05 01/2011

1.2.4 Initial commissioning

When the TresCon NOx-N is installed and connected, the initial

commissioning can start.

Note

Read the B

ASIC OPERATION section in the TERMINAL volume of this

operating manual if you are not yet familiar with the operation of the

TresCon.

1 Switch on the TresCon at the power switch (mounting stand).

The analyzer modules warm up. The TresCon NOx-N is ready

for operation after it reaches the operating temperature.

2 Measuring mode

Select TresCon NO

X-N with 68.

3 Call up the Parameters NOx-N menu with 3. The main

menu appears on the display.

4 Select the Service menu item with 68 and confirm with

3. The service menu appears.

5 Perform the Fill system service according to section 3.2, page

3-4 of this operating manual.

Switching on the

TresCon

Filling the system

Overview NOx-N

1 - 14

ba43110e05 01/2011

1.3 Removal from service

Depending on the duration of the shutdown, some precautionary

measures need to be taken when removing the analyzer module from

service.

1 Perform the Empty system service, see section 3.5, page 3-11.

1 Perform the AutoClean service, see section 3.1, page 3-3.

2 Perform the AutoClean service again using deionized water

instead of cleaning solution.

3 Perform the Empty system service, see section 3.5, page 3-11.

Shutdown of up to 7

days

Shutdown of more than

7 days

NOx-N Overview

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ba43110e05 01/2011

1.4 Instrument parameters

You can call up the following menu items via the main menu,

Parameters NOx-N, and display or change parameters there.

z Service

Performs maintenance activities with support from the service

menu. Numerous service steps are described from page 3-1.

z AutoCal

To define the parameters of the automatic calibration function for the

zero point calibration, page 2-5.

z AutoClean

To define the parameters of the automatic cleaning function, page

2-10.

z Manual correction

To adapt the measuring device by entering a comparison measured

value, page 2-12.

z Display

Selecting the dimensions and citation form, page 2-16.

z Attenuation

To parameterize the integrated low pass filter, page 2-18.

z Interval program

To select the intervals of the interval program, page 2-20.

z AutoAdapt

To select the parameters of the AutoAdapt procedure,

page 2-23.

z AutoFlow

Selecting the individual features of the monitoring function,

page 3-42.

z Measuring interval

To select the type of function and the intervals, page 2-23.

z Dilution

To enter a dilution factor, page 2-27.

Overview NOx-N

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