ProMinent DULCOTEST DO 3-mA-20 ppm Assembly And Operating Instructions Manual

Brand: ProMinent

Model: DULCOTEST DO 3-mA-20 ppm

Type: Assembly And Operating Instructions Manual

DULCOTEST

sensors for dissolved oxygen

Type: DO 3-mA-20 ppm

Assembly and operating instructions

A2613

Target group: Instructed person982373 BA DT 061 12/18 EN

Please carefully read these operating instructions before use. · Do not discard.

The operator shall be liable for any damage caused by installation or operating errors.

The latest version of the operating instructions are available on our homepage.

General non-discriminatory approach In order to make it easier to read, this docu‐

ment uses the male form in grammatical struc‐

tures but with an implied neutral sense. It is

aimed equally at both men and women. We

kindly ask female readers for their under‐

standing in this simplification of the text.

Supplementary information

Please read the supplementary information in its entirety.

Information

This provides important information relating to the correct operation of the unit or is intended

to make your work easier.

Warning information

Warning information includes detailed descriptions of the hazardous situation, see

Ä Chapter 2.1

‘Labelling of Warning Information’ on page 8

The following symbols are used to highlight instructions, links, lists, results and other elements in

this document:

Tab. 1: More symbols

Symbol Description

Action, step by step.

⇨ Outcome of an action.

Links to elements or sections of these instructions or other applicable docu‐

ments.

List without set order.

[Button]

Display element (e.g. indicators).

Operating element (e.g. button, switch).

Supplemental directives

Symbol Description

‘Display /GUI’

Screen elements (e.g. buttons, assignment of function keys).

CODE

Presentation of software elements and/or texts.

Supplemental directives

Table of contents

1 Function.................................................................................................................................. 5

1.1 Measuring principle........................................................................................................ 5

1.2 Construction and function............................................................................................... 6

1.3 Scope of delivery............................................................................................................ 7

2 Safety...................................................................................................................................... 8

2.1 Labelling of Warning Information.................................................................................... 8

2.2 User qualification.......................................................................................................... 10

2.3 General safety information........................................................................................... 11

2.4 Intended use................................................................................................................. 11

3 How to store and transport the sensor.................................................................................. 12

3.1 Storage......................................................................................................................... 12

3.2 Transport...................................................................................................................... 12

4 Assembly and installation...................................................................................................... 13

4.1 Installation on a PVC immersion tube.......................................................................... 14

4.2 Installation in the bypass fitting DGMa......................................................................... 15

4.3 Installation in bypass fitting DLG III.............................................................................. 16

4.4 Electrical connection.................................................................................................... 18

5 Preparation for the measurement......................................................................................... 20

Calibration with the DULCOMETER

DACb........................................................................ 21

6.1 Calibration on air.......................................................................................................... 21

6.2 Calibration in water using a reference measurement................................................... 21

6.3 Calibrating the zero point............................................................................................. 21

7 Maintenance and troubleshooting......................................................................................... 22

7.1 Dismantling the sensor................................................................................................. 22

7.2 Replacing the sensor cap............................................................................................. 22

7.3 Cleaning....................................................................................................................... 23

7.4 Troubleshooting............................................................................................................ 23

8 Disposal of used parts........................................................................................................... 24

9 Parts and accessories........................................................................................................... 25

10 Technical data....................................................................................................................... 26

10.1 Standards and regulations complied with................................................................... 27

11 Index..................................................................................................................................... 28

Table of contents

1 Function

The DULCOTEST

sensor, type DO 3, is used

for measurement of the partial pressure of dis‐

solved oxygen and the measured variables

derived from this:

n Oxygen concentration in aqueous liquids

in mg/l or ppm,

n Degree of oxygen saturation in aqueous

liquids in %

The sensor type DO 3 is used for measurement

of the concentration of dissolved oxygen in

fresh water and salt water. The applications

specifically include

n The control and monitoring of aeration pro‐

cesses in clarification plants,

n Monitoring of fish farming facilities

n The aeration of raw water in water works

n Assessment of the quality of surface

water.

All wetted materials are suitable for fresh water

and salt water.

1.1 Measuring principle

The sensor type DO 3 is based on the optical

measurement of a fluorescence beam. The flu‐

orescence beam is weakened depending on

the partial pressure of the oxygen in the water.

The measurement is done in pulsed mode, with

the relaxation time of the fluorescence beam

being determined.

Function

1.2 Construction and function

A sensor cap is screwed onto the optical window of the sensor type DO 3 integrated in the sensor

shaft. The sensor cap contains fluorescence dye immobilised on a carrier. A black protective cap is

attached to the sensor cap. The sensor has a 10-metre long fixed cable. The sensor can be

immersed under water. The sensor shaft has an Rp1” thread on the cable side. The adapter

included in the scope of delivery is screwed onto the thread to enable the sensor to be connected to

an immersion tube at an angle of 45°. The middle part of the sensor shaft has a groove for a clamp

disc. The clamp ring threaded connection is used to fix the sensor into a suitable ProMinent bypass

fitting. The sensor shaft contains a temperature sensor (Pt 1000). The temperature sensor is used

for internal temperature correction of the measuring signal. The temperature sensor is connected to

the measuring equipment. The sensor is factory calibrated. The temperature-corrected, calibrated

and galvanically isolated 4 ... 20 mA measuring signal leaves the sensor along 2 lines. The supply

voltage is also fed along the same lines (two-line technology).

A2646

Fig. 1: Construction of the sensor

1 Fixed cable, 10 metres

2 Rp1” thread

3 Sensor shaft with groove for the clamp disc

4 Sensor head area with protective cap

5 Clamp disc

Function

A2643

Fig. 2: Construction in the sensor head area

1 Groove for the clamp disc for connection to

the bypass fitting

2 Sensor shaft

3 O-ring

4 Sensor cap with fluorescence dye

5 Protective cap (bite protection for the appli‐

cation: fish farming)

6 Clamp disc

1.3 Scope of delivery

Please first check the scope of delivery of

sensor type DO 3, order number 1094609

n 1 no. clamp disc,

n 1 no. clamp disc, replacement,

n 1 no. protective cap on the sensor head,

n 1 no. adapter: with Rp1” thread, PVC-U,

n 1 no. 45° angle, PVC, DN32,

n 1 no. assembly and operating instructions.

Function

2 Safety

2.1 Labelling of Warning Infor‐

mation

Introduction

These operating instructions provide informa‐

tion on the technical data and functions of the

product. These operating instructions provide

detailed warning information and are provided

as clear step-by-step instructions.

The warning information and notes are categor‐

ised according to the following scheme. A

number of different symbols are used to denote

different situations. The symbols shown here

serve only as examples.

DANGER!

Nature and source of the danger

Consequence: Fatal or very serious

injuries.

Measure to be taken to avoid this

danger.

Description of hazard

– Denotes an immediate threatening

danger. If the situation is disre‐

garded, it will result in fatal or very

serious injuries.

WARNING!

Nature and source of the danger

Possible consequence: Fatal or very

serious injuries.

Measure to be taken to avoid this

danger.

– Denotes a possibly hazardous sit‐

uation. If the situation is disre‐

garded, it could result in fatal or

very serious injuries.

CAUTION!

Nature and source of the danger

Possible consequence: Slight or minor

injuries. Material damage.

Measure to be taken to avoid this

danger.

– Denotes a possibly hazardous sit‐

uation. If the situation is disre‐

garded, it could result in slight or

minor injuries. May also be used

as a warning about material

damage.

Safety

NOTICE!

Nature and source of the danger

Damage to the product or its surround‐

ings.

Measure to be taken to avoid this

danger.

– Denotes a possibly damaging sit‐

uation. If the situation is disre‐

garded, the product or an object in

its vicinity could be damaged.

Type of information

Hints on use and additional information.

Source of the information. Additional

measures.

–

Denotes hints on use and other

useful information. It does not indi‐

cate a hazardous or damaging sit‐

uation.

Safety

2.2 User qualification

WARNING!

Danger of injury with inadequately qualified personnel

The operator of the system / equipment is responsible for ensuring that the qualifications are

fulfilled.

If inadequately qualified personnel work on the unit or loiter in the hazard zone of the unit,

this could result in dangers that could cause serious injuries and material damage.

– All work on the unit should therefore only be conducted by qualified personnel.

– Unqualified personnel should be kept away from the hazard zone.

The pertinent accident prevention regulations, as well as all other generally acknowledged

safety regulations, must be adhered to.

Training Definition

Instructed personnel An instructed person is deemed to be a person who has been

instructed and, if required, trained in the tasks assigned to him and pos‐

sible dangers that could result from improper behaviour, as well as

having been instructed in the required protective equipment and protec‐

tive measures.

Trained user A trained user is a person who fulfils the requirements made of an

instructed person and who has also received additional training specific

to the system from the manufacturer or another authorised distribution

partner.

Trained, qualified per‐

sonnel

A trained, qualified employee is deemed to be a person who is able to

assess the tasks assigned to him and recognize possible hazards

based on his training, knowledge and experience, as well as knowledge

of pertinent regulations. A trained, qualified employee must be able to

perform the tasks assigned to him independently with the assistance of

drawing documentation and parts lists. The assessment of a person's

technical training can also be based on several years of work in the rel‐

evant field.

Safety

Training Definition

Electrical technician An electrical technician is able to complete work on electrical systems

and recognise and avoid possible dangers independently based on his

technical training and experience as well as knowledge of pertinent

standards and regulations. An electrical technician must be able to per‐

form the tasks assigned to him independently with the assistance of

drawing documentation, parts lists, terminal and circuit diagrams. The

electrical technician must be specifically trained for the working environ‐

ment in which the electrical technician is employed and be conversant

with the relevant standards and regulations.

Service The Service department refers to service technicians, who have

received proven training and have been authorised by the manufacturer

to work on the system.

2.3 General safety information

WARNING!

Danger from hazardous substances!

Possible consequence: Fatal or very

serious injuries.

Please ensure when handling haz‐

ardous substances that you have read

the latest safety data sheets provided

by the manufacture of the hazardous

substance. The actions required are

described in the safety data sheet.

Check the safety data sheet regularly

and replace, if necessary, as the

hazard potential of a substance can be

re-evaluated at any time based on new

findings.

The system operator is responsible for

ensuring that these safety data sheets

are available and that they are kept up

to date, as well as for producing an

associated hazard assessment for the

workstations affected.

The sensor contains a temperature sensor (Pt

1000). This temperature sensor should only be

used for temperature compensation of the

oxygen signal and not for control of the process

temperature.

Only use the sensor for the intended use and

when it is in perfect condition.

2.4 Intended use

The sensor type DO 3 is used for the measure‐

ment of the partial pressure of dissolved

oxygen and the measured variables derived

from this in the applications described in

Ä Fur‐

ther information on page 5

n Oxygen concentration in liquids in [ppm],

n Oxygen saturation in [%].

No other uses are permitted.

Safety

3 How to store and transport the sensor

User qualification: instructed user

Ä Chapter

2.2 ‘User qualification’ on page 10

NOTICE!

Original packaging

Damage to the product.

– Only transport, ship and store the

sensor in its original packaging.

3.1 Storage

Storage and transport temperature:

n complete sensor - 10 °C ... 60 °C.

Humidity: maximum 90% relative air humidity,

non-condensing.

Other: No dust, no direct sunlight.

3.2 Transport

The sensor should be transported in its original

packaging and in compliance with the permis‐

sible environmental conditions. No further spe‐

cial conditions have to be observed in relation

to transport.

How to store and transport the sensor

4 Assembly and installation

n User qualification, mechanical installation:

trained and qualified personnel

Ä Chapter

2.2 ‘User qualification’ on page 10

n User qualification, electrical installation:

electrical technician

Ä Chapter 2.2 ‘User

qualification’ on page 10

WARNING!

Danger from hazardous substances!

Possible consequence: Fatal or very

serious injuries.

Please ensure when handling haz‐

ardous substances that you have read

the latest safety data sheets provided

by the manufacture of the hazardous

substance. The actions required are

described in the safety data sheet.

Check the safety data sheet regularly

and replace, if necessary, as the

hazard potential of a substance can be

re-evaluated at any time based on new

findings.

The system operator is responsible for

ensuring that these safety data sheets

are available and that they are kept up

to date, as well as for producing an

associated hazard assessment for the

workstations affected.

When unpacking, check the sensor type DO 3

for any mechanical defects. Return any defec‐

tive sensors to your dealer or manufacturer in

their original packaging.

Assembly and installation

4.1 Installation on a PVC immersion tube

When using in the aeration tank of a clarification plant, make sure that the 45° angle piece is bonded

in when fitting the sensor to a PVC immersion tube. The measurement can only be done properly if

the sensor is immersed at an angle of 45° in the water to be measured.

A2650

Fig. 3: Adapter with Rp1” thread (2) with 45° angle, PVC, DN32 (1).

1. Use suitable adhesive to bond the 45° angle (PVC, DN32) to the adapter with an Rp1”

thread.

2. Push the sensor cable through the Rp1” threaded assembly.

3. Screw the sensor type DO 3 by turning the adapter onto the Rp1” thread.

CAUTION!

Do not allow the sensor cable to come into contact with the adhesive

Do not allow the sensor cable to come into contact with the adhesive as the adhesive will

attack and damage the insulation on the sensor cable.

4. Pull the sensor cable through the immersion tube.

5. Use suitable adhesive to bond the PVC adapter part to the immersion tube.

6. With non-fish farming installations: remove the sensor’s protective cap before installing it in

the process.

Assembly and installation

4.2 Installation in the bypass fitting DGMa

You will need a mounting kit, order number 791818.

A2654

Fig. 4: Installation in the bypass fitting

1 Mounting for the clamp disc

2 Protective rubber cap

3 Clamp disc

1. Remove the black protective rubber cap (2) by pulling off by turning it clockwise. Make sure

that you do not loosen the sensor cap.

2. Fit the sensor as described in the operating instructions for the bypass fitting. Only use the

mounting kit, order number 791818, for installation, which is not included in the scope of

delivery. Unlike the description, guide the parts of the mounting kit from below over the posi‐

tion of the mounting (1) for the clamp disc (3). Then insert the clamp disc seal (3) into the

mounting (1).

Assembly and installation

4.3 Installation in bypass fitting DLG III

You will need a mounting kit, order number 815079.

A2654

Fig. 5: Installation in the bypass fitting

1 Mounting for the clamp disc

2 Protective rubber cap

3 Clamp disc

Assembly and installation

1. Remove the black protective rubber cap (2) by pulling off by turning it clockwise. Make sure

that you do not loosen the sensor cap.

A0645

Fig. 6: Installation in the bypass fitting

1. Threaded sleeve

2. Clamp disc

3. Sensor

4. O-ring

5. Washer

6. Bypass fitting

2. Fit the sensor as described in the operating instructions for the bypass fitting. Only use the

mounting kit, order number 815079, for installation, which is not included in the scope of

delivery.

Unlike the description, guide the parts of the mounting kit from below over the position of the

mounting for the clamp disc (1). Then insert the clamp disc seal (3) into the mounting (1).

Assembly and installation

4.4 Electrical connection

WARNING!

Danger from electrical voltage and short circuiting.

Insulate any unused leads to prevent short circuiting and this damage to the sensor.

Only use the fitted temperature sensor to monitor the conditions of use of sensor type DO 3 and not

to control a process temperature

Tab. 2: Electrical connection

Cable colour Assignment and function

Red 4 ... 20 mA loop, polarity, “+"

Brown 4 ... 20 mA loop, polarity,"-"

White Service, with heat shrink hose

Pink Service, with heat shrink hose

Black Shielding, with heat shrink hose

Grey Pt 1000

Blue Pt 1000

Assembly and installation

EMC-polluted environment

Connect the cable shield to ground or earth in EMC-polluted environments to improve inter‐

ference resistance and signal quality.

The galvanically isolated 4 ... 20 mA interface enables sensor type DO 3 with 2 lines to be con‐

nected directly to a controller, PLC Programmable Logic Controller, data recorder, display unit or

process control systems with an analogue input. The power supply (VDC 18 ... 30 V) is fed by the

red line (plus) and the brown line (minus). The lines also carry the measuring signal.

In the factory setting, the 4 ... 20 mA interface is configured with a measuring range of 0 ... 200%.

A2614

Fig. 7: Wiring example

I. Sensor

II. Measuring unit, PLC Programmable Logic

Controller etc.

1 Brown (minus)

2 Red (plus)

3 Grey (Pt 1000)

4 Blue (Pt 1000)

Assembly and installation

5 Preparation for the measurement

User qualification: instructed user

Ä Chapter

2.2 ‘User qualification’ on page 10

Prepare the sensor for the measurement:

1. Make sure that the sensor cap is fitted

tightly to the sensor shaft and the O-ring

between the shaft and cap is undam‐

aged.

2. Make sure that the sensor is inserted.

3. Ensure that the sensor is electrically

wired, as described in chapter .

Assuming identical temperatures

between the medium and sensor,

the sensor signal will stabilise in a

few minutes. In the event of a

higher temperature difference

between the sensor and the meas‐

ured water, stabilisation can take

up to 30 minutes.

Preparation for the measurement

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ProMinent DULCOTEST DO 3-mA-20 ppm Assembly And Operating Instructions Manual

ProMinent DULCOTEST DO 3-mA-20 ppm Assembly And Operating Instructions Manual

ProMinent DULCOTEST DO 3-mA-20 ppm Assembly And Operating Instructions Manual

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