JUMO tecLine CL2 sensor for free chlorine
Price on request
Product information "JUMO tecLine CL2 sensor for free chlorine"
JUMO sensor for monitoring free chlorine in water applications
JUMO tecLine CL2 – Amperometric Membrane Sensor for Free Chlorine
The JUMO tecLine CL2 is a sensor designed for precise monitoring of free chlorine in water applications. It enables reliable process control in disinfection and water treatment systems through flexible signal transmission and easy system integration.
The JUMO tecLine CL2 is an amperometric membrane sensor for the continuous measurement of free chlorine in water and process media. It is suitable for monitoring chlorine-based disinfection processes and supports reliable water quality control across a wide range of applications.
The measurement covers various chlorine compounds, including chlorine gas and hypochlorite-based solutions. Depending on the version, the measured value is transmitted either as a temperature-compensated 4–20 mA signal or digitally via Modbus RTU and can be integrated into downstream monitoring and control systems.
Calibration is not performed directly on the sensor but via connected measuring, display, or automation devices, allowing flexible integration into existing systems. The sensor is powered directly by a compatible transmitter or controller.
Advantages
- continuous measurement of free chlorine in water
- compatible with various chlorine compounds
- flexible signal transmission, analog or digital
- easy integration into existing measurement and control systems
- calibration via external devices
- suitable for various water applications
- stable measurement acquisition during continuous operation
Technical Data
- Product: JUMO tecLine CL2
- Measured parameter: free chlorine
- Measuring principle: amperometric, membrane-based
- Output: temperature-compensated 4–20 mA or RS485 Modbus RTU
- Calibration: via external device, e.g. controller, PLC, display unit
- Power supply: via connected transmitter
- Connection: system-dependent
Typical Applications
- drinking water treatment
- swimming pool and bathing water technology
- service and process water
- cooling water systems
- disinfection and water treatment plants
Frequently Asked Questions
It measures the chlorine level in the water to monitor water quality.
It is suitable for monitoring free chlorine in water, for example in swimming pools or drinking water systems.
Yes. The sensor takes continuous measurements and is suitable for continuous operation.
Yes. It is specifically designed for monitoring chlorine in swimming pool water.
Depending on the version, as a 4–20 mA signal or digitally via Modbus RTU.
No. Calibration is performed via external devices such as controllers or control systems.
It can be easily integrated into existing measurement and control systems.
For drinking water, process water, cooling water, and other applications involving chlorinated water.
Dimensions
| Height | 8 cm |
|---|---|
| Length | 30 cm |
| Width | 20 cm |
Weight
| Weight | 640 g |
|---|
Other attributes
| Country of origin | DE |
|---|---|
| Customs tariff number | 90278930 |
Sensors for free chlorine (reduced pH dependence)
|
Sensor type |
202630/43 |
202630/53 |
|
Measurand |
Free chlorine (reduced pH dependence) |
|
|
Area of application |
Swimming pool water, drinking water and seawater |
|
|
Suitable chlorination agents |
Inorganic chlorine compounds: NaOCl (sodium hypochlorite), Ca(OCl)2, chlorine gas, chlorine produced by electrolysis |
|
|
Measuring principle |
Membrane-covered, amperometric, potentiostatic three-electrode system with integrated electronics |
|
|
Membrane type |
Hydrophilic membrane |
|
|
Measuring cable connection |
2-pin terminal connection (2 × 1 mm2) |
5-pin flange connector, M12 |
|
Voltage supply |
UB DC 12 to 30 V (galvanic isolation required) |
UB DC 22.5 to 26 V (galvanically isolated from the sensor) |
|
Electromagnetic compatibilitya |
Interference emission: class Bb Interference immunity: to industrial requirements |
|
|
Output signal |
4 to 20 mA |
Modbus RTU |
|
Load/current consumption |
≤ (UB - 7.5 V) ÷ 0.02 A |
approx. 20 mA |
|
Settling time |
2 h |
|
|
Inflow speed |
Approx. 15 cm/s corresponds to a flow of approx. 30 l/h when installed in the JUMO flow fitting (part no.: 00392611) |
|
|
Measuring rangesc |
0.05 to 2 mg/l (ppm) 0.05 to 5 mg/l (ppm) 0.05 to 10 mg/l (ppm) 0.05 to 200 mg/l (ppm) |
0.05 to 2 mg/l (ppm) 0.05 to 20 mg/l (ppm) 0.05 to 200 mg/l (ppm) |
|
Resolution |
0.01 mg/l with measuring range 2/5/10 mg/l 0.1 mg/l with measuring range 200 mg/l |
0.001 mg/l with measuring range 2 mg/l 0.01 mg/l with measuring range 20 mg/l 0.1 mg/l with measuring range 200 mg/l |
|
Accuracyd |
|
|
|
Measuring range 2 mg/l |
< 1 % with 0.4 mg/l |
|
|
|
< 1 % with 1.6 mg/l |
|
|
Measuring range 20 mg/l |
< 1 % with 4 mg/l |
|
|
|
< 3 % with 16 mg/l |
|
|
Slope drifte |
Approx. < -1 % per month |
|
|
Response time t90 |
Approx. 2 min |
|
|
Operating temperature Sample water temperature Ambient temperature |
0 to 45 °Cf 0 to 55 °C |
|
|
Temperature compensation |
Automatic, using integrated temperature probe |
|
|
Zero point adjustment |
Not required |
|
|
Slope adjustment |
On evaluation unit/controller using analytical chlorine determination (DPD-1-method) |
|
|
pH value operating range |
pH 4 to pH 9 |
|
|
pH dependence (loss of slope) |
Between pH 5 and 7: no loss of slope with pH 8, approx. 10% with pH 9, approx. 30% (starting at pH 7) |
|
|
Conductivity of the measurement me- dium |
10 µS/cm to 50 mS/cm (seawater) |
|
|
Disturbances |
ClO2: recorded with a concentration factor of 0.75 O3: recorded with a concentration factor of 0.8 Combined chlorine may increase the measured value |
|
|
Pressure resistanceg |
Pabs max. 4 bar Prel max. 3 bar |
|
|
Materials |
Microporous, hydrophilic membrane, PVC-U, stainless steel 1.4571 |
|
|
Dimensions |
Dia. 25 mm, length 220 mm (housing with membrane cap) |
Dia. 25 mm, length 205 mm (housing with membrane cap) |
|
Weight |
Approx. 125 g |
|
a EN 61326-1, EN 61326-2-3.
b The product is suitable for industrial use as well as for households and small businesses.
c Other measuring ranges upon request.
d After calibration under replicable conditions (25 °C, pH 7.2 in drinking water) from the measuring range end value.
e Under replicable conditions (25 °C, pH 7.2 in drinking water).
f Prerequisite: no ice crystals in the measurement medium.
g Pressure fluctuations are not admissible. Pressure-free operation (atmospheric pressure) recommended.
We recommend the following
Flow monitors for disinfection variables Membrane-covered sensors for water disinfection (e.g. free chlorine or total chlorine, ozone, chlorine dioxide, etc.) must be operated with a minimum flow rate of 15 cm/s. The flow monitor is integrated into the sample water supply line, in series with the disinfection sensor, and monitors the required minimum flow to the sensor. Below the minimum flow velocity, the sensors measure values that are too low. This can cause a connected control system to dangerously overdose or underdose. Above the minimum incident flow velocity, the measuring signal is only slightly influenced by the incident flow velocity. The flow monitor consists of a flow body, a needle valve insert for flow regulation and an inductive proximity switch, which is controlled by a float in the medium flow. When the minimum flow velocity is reached or exceeded, the float rises and the contact of the inductive proximity switch switches. The contact can be used, for example, to control a binary input of the controller for standard signals, JUMO AQUIS 500 AS. If the flow is too low, the controller is set to the ‘HOLD’ state. This prevents incorrect dosing. Areas of application Flow monitoring when using sensors for free chlorine, chlorine dioxide, ozone, hydrogen peroxide or peracetic acid