Operating instructions
Sensor CLB 2-μA and CLB 3-μA, 5 ppm
DULCOTEST ® free chlorine sensor, CLB 2-μA and CLB 3-μA
Description
Functional requirements:
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Regular cleaning and calibration
Operating requirements:
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Fig. 1: All dimensions in mm
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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 aqueous
solution. 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 sample
water temperature varies, thanks to its integrated temperature element, while the CLB 3 type
requires 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 chlorine
determination using an open (diaphragm-free) 3-sensor system.
Installing the sensor:
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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 by
hand. If leaks occur, carefully tighten in stages using a 19 mm open-ended spanner.
Technical data
CLB 2-μA-5 ppm / order number 1038902
10.07.2012, 985584, 2, en_GB
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 galvanically
isolated
Typical application
Drinking water and swimming pool water, also use with electrolysis processes that use swimming
pool water directly without the addition of salt
ProMinent Dosiertechnik GmbH, Im Schuhmachergewann 5 - 11, D-69123 Heidelberg, info@prominent.de, www.prominent.com
Part no. 985584 BA DT 040 07/12 EN
Also observe all the safety instructions in the DULCOMETER® Compact Controller
Chlorine. These instructions are absolutely binding for the sensor.
Operating instructions
Sensor CLB 2-μA and CLB 3-μA, 5 ppm
Temperature compensa‐
tion
Type CLB 2: Pt 1000 integrated, calculation in the compact controller, suitable for temperature
changes < 1.5 °C/min
Type CLB 3: no integral temperature compensation. With external thermocouple Pt 100 / Pt 1000
suitable for temperature changes < 5 °C/min
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
Electrical connection
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.
Calibration
Requirements for a calibration in conjunction with the compact controller:
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Maintenance
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
Calibrate:
– Remove sample water directly at the measuring point and determine the content of
chlorine 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, you
must clean the sensor. The frequency is dependent on the respective application, contamination
of 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. The
cleaning kit contains all the necessary cleaning agents, accessories and information that are
necessary 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 the
sensor for approximately 10 minutes in the solution and then install in the fitting through which
the water flows.
Disposal
10.07.2012, 985584, 2, en_GB
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.
ProMinent Dosiertechnik GmbH, Im Schuhmachergewann 5 - 11, D-69123 Heidelberg, info@prominent.de, www.prominent.com
Part no. 985584 BA DT 040 07/12 EN
Measuring and control
device