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Two-Electrode System Chlorine Dioxide sensor For Drinking Water, Service And Process Water

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Two-Electrode System Chlorine Dioxide sensor For Drinking Water, Service And Process Water

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Brand Name :	Daruifuno
Model Number :	CD4.2
Certification :	CE, ISO
Price :	Negotiable
Payment Terms :	T/T
Delivery Time :	1-45 work days

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Two-Electrode System Chlorine Dioxide sensor For Drinking Water, Service And Process Water

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

	CD4.2
Indicator	Chlorine dioxide
Application	Swimming pool water, drinking water, service water, process water The water must not contain any surfactants (tensides)!
Appropriate chlorine dioxide production methods	e. g. - Acid/chlorite-method - Chlorine/chlorite-method
Measuring system	Membrane covered, amperometric 2-electrode system with electronic inside
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)
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)
Slope drift At repeatability conditions (25 °C, pH 7,2 in drinking water)	Approx. <- 1% per month
Working temperature	Measuring water temperature: 0 … +45 °C (no ice crystals in measuring water)
Working temperature	Ambient temperature: 0 … +55 °C
Temperature compensation	Automatically, by an integrated temperature sensor Sudden temperature changes must be avoided
Max. allowed working pressure	Operation without retaining ring: - 0.5 bar - no pressure impulses and/or vibrations
Max. allowed working pressure	Operation with retaining ring in Flow cell: - 1.0 bar, - no pressure impulses and/or vibrations (see option 1)

	CD4.2
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
Absence of the disinfectant	Max. 24 h
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
Max. length of sensor cable (depending on internal signal processing)	analog	< 30 m
	digital	> 30 m are permissible Maximum cable length depends on application
Protection type	5-pole M12 plug-on flange: IP68 2-pole terminal with mA-hood: IP65
Material	Semipermeable membrane, PVC-U, ABS
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)
Transport	+5 … +50 °C (Sensor, electrolyte, membrane cap)

	CD4.2
Storage	Sensor: dry and without electrolyte no limit at +5 … +40 °C
	Electrolyte: in original bottle protected from sunlight at +5 … +35 °C min. 1 year or until specified EXP-Date
	Membrane cap: in original packing no limit at +5 … +40 °C (used membrane caps can not be stored)
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

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)

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.

Measuring

range

in ppm

Resolution

in ppm

Output

resistance

Nominal

slope

in mV/ppm

Voltage

supply

Connection

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.

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.

	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	analog 0…-2 V (max. -2.5 V) 1 kΩ	- 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	analog 0…+2 V (max. +2.5 V) 1 kΩ	+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.

Measuring

range

in ppm

Resolution

in ppm

Output

Output resistance

Power supply

Connection

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

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

	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 4 mm 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

	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

Art. no. 11908

14 x 1.8 NBR

Art. no. 11806

(Subject to technical changes!)

Two-Electrode System Chlorine Dioxide sensor For Drinking Water, Service And Process Water

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