DDULCOTEST ® free chlorine sensor, CLB 2-μA and CLB 3-μA

DescriptionFunctional requirements:– Regular cleaning and calibrationAlso observe all the safety instructions in the DULCOMETER® Compact ControllerChlorine. These instructions are absolutely binding for the sensor.Operating requirements:– Constant pH value of 5.0 to 9.0– Provide and monitor constant sample water flow– Maximum back pressure at the outlet of the bypass valve, max. 3 bar– Only operate using the DULCOMETER® Compact Controller Chlorine– After power-cuts or in the absence of chlorine (> 24 h), allow the sensor to

run-in and calibrate– CLB 3 only: constant sample water temperature necessary (tolerance <± 5

°C)

The DULCOTEST® sensors CLB 2 and CLB 3 measure free chlorine (HOCl/ OCl-) in aqueoussolution. The sensors are suitable for those disinfection processes where the free chlorine origi‐nates from inorganic chlorine compounds such as hypochlorite, chlorine gas or through electrol‐ysis. The sensors must be used in clear and chemically uncontaminated water, such as swim‐ming pool water and drinking water. The CLB 2 type measures correctly even when the samplewater temperature varies, thanks to its integrated temperature element, while the CLB 3 typerequires a constant sample water temperature due to the lack of temperature compensation (tol‐erance <± 5 °C). The measuring method of the sensors is based on amperometric chlorinedetermination using an open (diaphragm-free) 3-sensor system.

The sensor is fitted in the bypass of the main line in the ProMinent DGMA type fitting(module PG 13.5) by screwing it into the corresponding PG 13.5 thread and tightened byhand. If leaks occur, carefully tighten in stages using a 19 mm open-ended spanner.

Technical data

CLB 2-μA-5 ppm / order number 1038902

CLB 3-μA-5 ppm / order number 1041696

Measured variable Free chlorine (hypochlorous acid HOCI, OCl-)

Measuring range: 0.05 - 5.0 mg/l: can be used for transient shock chlorine levels of up to about 10 mg/l

Reference method DPD1

pH range 5.0 … 9.0

Temperature 5 … 45 °C

Maximum pressure 3.0 bar

Flow 60 … 80 l/h (in the DGMA), constant flow required, as the signal is flow-dependent

Run-in period 30 ... 60 minutes.

Output signal Unamplified primary flow signal, not temperature-compensated, uncalibrated, not galvanicallyisolated

Typical application Drinking water and swimming pool water, also use with electrolysis processes that use swimmingpool water directly without the addition of salt

Fig. 1: All dimensions in mm

Installing the sensor:

Operating instructionsSensor CLB 2-μA and CLB 3-μA, 5 ppm

Part no. 985584 BA DT 040 07/12 EN

ProMinent Dosiertechnik GmbH, Im Schuhmachergewann 5 - 11, D-69123 Heidelberg, info@prominent.de, www.prominent.com

10.0

7.20

12, 9

8558

4, 2

, en_

GB

Temperature compensa‐tion

Type CLB 2: Pt 1000 integrated, calculation in the compact controller, suitable for temperaturechanges < 1.5 °C/min

Type CLB 3: no integral temperature compensation. With external thermocouple Pt 100 / Pt 1000suitable for temperature changes < 5 °C/min

Measuring and controldevice

DULCOMETER®, Compact Controller Chlorine

Sensor cable Fixed cable, 1 m

Installation valve DGMA

Measuring principle Amperometric, 3 sensors, no diaphragm

Storage and transport Storage temperature: 0 ... 50 °C / air humidity: < 95% relative air humidity, non-condensing

You must not extend the fixed cable at the sensor. When connecting the sensor to the con‐troller, you must observe the controller's terminal diagram.

Requirements for a calibration in conjunction with the compact controller:

Only calibration method DPD1 is permissible for both sensor types The sensor is fitted, flushed with sample water and electrically connected to the controller For process reasons, a constant concentration of free chlorine > 0.2 ppm and a constant

temperature of the measuring water must exist Constant pH value in the permitted sensor range Constant flow in the range of 60 ... 80 l/h in the in-line probe housing Wait until the run-in period for the sensor has elapsed so that the measured value has sta‐

bilised CCalibrate:

– Remove sample water directly at the measuring point and determine the content ofchlorine content in the sample water in [ppm]. Enter this value into the controller.

In the event that a calibration of the sensor at the compact controller is no longer possible, youmust clean the sensor. The frequency is dependent on the respective application, contaminationof the sample water with disruptive substances, the temperature and usage duration. To do so,please use the cleaning kit, part number 1043049, which can be ordered from ProMinent. Thecleaning kit contains all the necessary cleaning agents, accessories and information that arenecessary for reliable cleaning.

To clean off lime scale deposits, you can also use commercial hydrochloric acid < 10 % pro‐vided you observe the safety instructions given in the safety data sheet. To do this, place thesensor for approximately 10 minutes in the solution and then install in the fitting through whichthe water flows.

NOTICE!Regulations governing disposal of used parts– Note the current national regulations and legal standards which apply in your

country

ProMinent Dosiertechnik GmbH, Heidelberg will take back decontaminated used devices pro‐viding that they are covered by adequate postage.

Electrical connection

Calibration

Maintenance

Disposal

Operating instructionsSensor CLB 2-μA and CLB 3-μA, 5 ppm

Part no. 985584 BA DT 040 07/12 EN

ProMinent Dosiertechnik GmbH, Im Schuhmachergewann 5 - 11, D-69123 Heidelberg, info@prominent.de, www.prominent.com

10.0

7.20

12, 9

8558

4, 2

, en_

GB