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Product Details:
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| Product Name: | Chlorine Dioxide Sensor | Product Model: | CD4.2 |
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| Measuring Range:: | 0~0.5/2/5/10/20ppm | Pressure Range: | 0 ~ 1bar (Flow Cell) |
| Temperature Range: | 0 ~ 45 ℃ | Response Time: | T90: Approx. 3 Min. (brine Approx. 5 Min.) |
| Flow Rate: | 15-30 L/h (33 – 66 Cm/s) | ||
| Highlight: | Drinking Water Chlorine Dioxide sensor,Process Water Chlorine Dioxide sensor,Service Water Chlorine Dioxide sensor |
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Two-Electrode System Chlorine Dioxide sensor For Drinking Water, Service And Process Water
Two-electrode system Chlorine Dioxide sensor CD4.2 Specially used to measure the concentration of chlorine dioxide in water. Used for drinking water, direct drinking water, service and process water, measuring water without surfactant, optional range 0~0.5/2/5/10/20ppm, its advantages and functional features include:
High sensitivity: The amperometric method accurately measures the concentration of chlorine dioxide through electrochemical reactions and can detect lower concentrations of chlorine dioxide.
Good selectivity: The sensor is specially designed for chlorine dioxide and has high selectivity, which can avoid interference from other oxidizing substances in the detection.
Quick response: It can detect changes in chlorine dioxide in water in a short time and is suitable for real-time monitoring.
Long-term stability: The use of coating technology can reduce electrode contamination, extend the service life of the sensor, and ensure long-term stable operation.
Low maintenance cost: The coating design reduces direct contact with the electrode, reduces electrode wear and cleaning requirements, and reduces maintenance frequency.
Functional features:
Two-electrode design: It consists of a working electrode and a reference electrode, drives the electrochemical reaction through a potential difference, and measures the redox current of chlorine dioxide.
Anti-pollution design: The coating acts as an isolation to protect the electrode from pollutants such as dirt and grease, and improves the performance of the sensor under complex water quality conditions.
Real-time monitoring function: It is suitable for online water quality monitoring systems, can continuously measure chlorine dioxide concentration, and is suitable for automated control and monitoring in industrial processes.
Temperature compensation function: Some sensors have temperature compensation function, which can ensure the accuracy of measurement at different temperatures.
The ampere-coated two-electrode chlorine dioxide sensor can efficiently monitor the concentration of chlorine dioxide in water to ensure the safety and reliability of water quality.
Scope of supply: CD4.2 sensor, membrane cap, electrolyte
Specifications
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CD4.2 |
| Indicator | Chlorine dioxide |
| Application |
Swimming pool water, drinking water, service water, process water The water must not contain any surfactants (tensides)! |
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Appropriate chlorine dioxide production methods |
e. g. - Acid/chlorite-method - Chlorine/chlorite-method |
| Measuring system | Membrane covered, amperometric 2-electrode system with electronic inside |
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Electronic |
Analog version: - voltage output - not galvanically isolated electronics - analog internal data processing - output signal: analog (analog-out/analog) Digital version: - electronic is completely galvanically isolated - digital internal data processing - output signal: analog (analog-out/digital) or digital (digital-out/digital) mA-version: - current output analog - not galvanically isolated electronics - output signal: analog (analog-out/analog) |
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Information about the measuring range |
The actual slope of a sensor can vary production-related between 65% and 150% of the nominal slope Note: With a slope > 100% the measuring range is reduced accordingly. (Ex.: 150% slope → 67% of the specified measuring range) |
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Slope drift At repeatability conditions (25 °C, pH 7,2 in drinking water) |
Approx. <- 1% per month |
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Working temperature |
Measuring water temperature: 0 … +45 °C (no ice crystals in measuring water) |
| Ambient temperature: 0 … +55 °C | |
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Temperature compensation |
Automatically, by an integrated temperature sensor Sudden temperature changes must be avoided |
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Max. allowed working pressure |
Operation without retaining ring: - 0.5 bar - no pressure impulses and/or vibrations |
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Operation with retaining ring in Flow cell: - 1.0 bar, - no pressure impulses and/or vibrations (see option 1) |
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CD4.2 |
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Flow rate (Incoming flow velocity) |
Approx. 15-30L/h (33 – 66 cm/s) in flow cell, small flow rate dependence is given | |||
| pH-range | pH 1 – pH 12 or the beginning of decomposition of chlorine dioxide at/over pH 12 | |||
| Run-in time | First start-up approx. 1 h | |||
| Response time | T90 : approx. 15 sec. | |||
| Zero point adjustment | Not necessary | |||
| Calibration | At the device, by analytical determination | |||
| Interferences |
Cl2 : factor 0.35 O3 |
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Absence of the disinfectant |
Max. 24 h | |||
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Connection |
mV version: Modbus version: 4-20 mA version: |
5-pole M12, plug-on flange 5-pole M12, plug-on flange 2-pole terminal or 5-pole M12, plug-on flange |
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Max. length of sensor cable (depending on internal signal processing) |
analog | < 30 m | ||
| digital |
> 30 m are permissible Maximum cable length depends on application |
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| Protection type |
5-pole M12 plug-on flange: IP68 2-pole terminal with mA-hood: IP65 |
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| Material | Semipermeable membrane, PVC-U, ABS | |||
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Size |
Diameter: Length: mV Version Modbus version 4-20 mA version |
approx. 25 mm approx. 190 mm (analog signal processing) approx.. 205 mm (digital signal processing) approx. 205 mm approx. 220 mm (2-pole-terminal) approx. 190 mm (5-pole-M12) |
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| Transport | +5 … +50 °C (Sensor, electrolyte, membrane cap) | |||
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CD4.2 |
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Storage |
Sensor: dry and without electrolyte no limit at +5 … +40 °C |
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Electrolyte: in original bottle protected from sunlight at +5 … +35 °C min. 1 year or until specified EXP-Date |
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Membrane cap: in original packing no limit at +5 … +40 °C (used membrane caps can not be stored) |
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Maintenance |
Regularly control of the measuring signal, min. once a week The following specifications depend on the water quality: Change of the membrane cap: once a year (depending on the water quality) Change of the electrolyte: every 3 - 6 months |
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Option 1: Retaining ring |
- When operating with pressures >0.5 bar in flow cell - Dimensions retaining ring 29 x 23.4 x 2.5 mm, slitted, PETP - Different positions for groove selectable(on request) |
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Technical Data
1. CD4.2 (analog output, analog internal signal processing)
A potential-free electrical connection is necessary as the sensor electronic is not equipped with a galvanical isolation.
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Measuring range in ppm |
Resolution in ppm |
Output Output resistance |
Nominal slope in mV/ppm |
Voltage supply |
Connection |
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CD4.2N-M12 |
0.05…20.00 |
0.01 |
0…-2000 mV 1 kΩ |
- 100 |
±5 - ±15 VDC 10 mA |
5-pole M12 plug-on flange Function of wires: PIN1: measuring signal PIN2: +U PIN3: -U PIN4: signal GND PIN5: n. c. |
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CD4.2H-M12 |
0.005…2.000 |
0.001 |
- 1000 |
(Subject to technical changes!)
2. CD4.2 (analog output, digital internal signal processing)
analog-out / digital
- The power supply is galvanically isolated inside of the sensor.
- The output signal is galvanically isolated too, that means potential-free.
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Measuring range
in ppm |
Resolution
in ppm |
Output Output resistance |
Nominal slope
in mV/ppm |
Power supply | Connection |
| CD4.2H-An-M12 | 0.005…2.000 | 0.001 |
analog 0…-2 V (max. -2.5 V) 1 kΩ |
- 1000 |
9-30 VDC approx. 20-56 mA |
5-pole M12 plug-on flange Function of wires: PIN1: measuring signal PIN2: +U PIN3: power GND PIN4: signal GND PIN5: n. c. |
| CD4.2N-An-M12 | 0.05…20.00 | 0.01 | - 100 | |||
| CD4.2H-Ap-M12 | 0.005…2.000 | 0.001 |
analog 0…+2 V (max. +2.5 V) 1 kΩ |
+1000 | ||
| CD4.2N-Ap-M12 | 0.05…20.00 | 0.01 | +100 |
(Subject to technical changes!)
3. CD4.2 (digital output, digital internal signal processing)
- The power supply is galvanically isolated inside of the sensor.
- The output signal is galvanically isolated too, that means potential-free.
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Measuring range in ppm |
Resolution in ppm |
Output Output resistance |
Power supply | Connection |
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CD4.2H-M0c |
0.005… 2.000 |
0.001 |
Modbus RTU There are no terminating resistors in the sensor. |
9-30 VDC approx. 20-56 mA |
5-pole M12 plug-on flange Function of wires: PIN1: reserved PIN2: +U PIN3: power GND PIN4: RS485B PIN5: RS485A |
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CD4.2N-M0c |
0.05… 20.00 |
0.01 |
(Subject to technical changes!)
4. CD4.2 4-20 mA (analog output, analog internal signal processing)
A potential-free electrical connection is necessary as the sensor electronic is not equipped with a galvanical isolation.
4.1 Electrical connection: 2 pole terminal clamp
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Measuring range in ppm |
Resolution in ppm |
Output Output resistance |
Nominal slope in mA/ppm |
Voltage supply | Connection |
| CD4.2MA0.5 | 0.005…0.500 | 0.001 |
4…20 mA uncalibrated |
32.0 |
12…30 VDC RL 50Ω…RL 900Ω |
2-pole terminal (2 x 1 mm²)
Recommended: Round cable
2 x 0.34 mm² |
| CD4.2MA2 | 0.005…2.000 | 0.001 | 8.0 | |||
| CD4.2MA5 | 0.05…5.00 | 0.01 | 3.2 | |||
| CD4.2MA10 | 0.05…10.00 | 0.01 | 1.6 | |||
| CD4.2MA20 | 0.05…20.00 | 0.01 | 0.8 |
(Subject to technical changes!)
4.2 Electrical connection: 5 pole M12 plug-on flange
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Measuring range in ppm |
Resolution in ppm |
Output Output resistance |
Nominal slope in mA/ppm |
Voltage supply | Connection |
| CD4.2MA0.5-M12 | 0.005…0.500 | 0.001 |
4…20 mA uncalibrated |
32.0 |
12…30 VDC RL 50Ω…RL 900Ω |
5-pole M12 plug-on flange Function of wires: PIN1: n. c. PIN2: +U PIN3: -U PIN4: n c. PIN5: n. c. |
| CD4.2MA2-M12 | 0.005…2.000 | 0.001 | 8.0 | |||
| CD4.2MA5-M12 | 0.05…5.00 | 0.01 | 3.2 | |||
| CD4.2MA10-M12 | 0.05…10.00 | 0.01 | 1.6 | |||
| CD4.2MA20-M12 | 0.05…20.00 | 0.01 | 0.8 |
(Subject to technical changes!)
Spare Parts
| Type | Membrane cap | Electrolyte | Emery | O-ring |
| For all CD4.2 |
M20.2 Art. no. 11011.1 |
ECD4 ● ECD7/W, 100 ml Art. no. 11030 |
S1 Art. no. 11908 |
14 x 1.8 NBR Art. no. 11806 |
(Subject to technical changes!)
Contact Person: Yuki Fu
Tel: +8615716217387
