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Two-Wire 4-20mA Chlorite/Chlorate Sensor For Swimming Pool Drinking Water Process Water And Seawater
Two-Wire 4-20mA Chlorite/Chlorate Sensor For Swimming Pool Drinking Water Process Water And Seawater
Two-Wire 4-20mA Chlorite/Chlorate Sensor For Swimming Pool Drinking Water Process Water And Seawater
Two-Wire 4-20mA Chlorite/Chlorate Sensor For Swimming Pool Drinking Water Process Water And Seawater
Specifications
Brand Name :
Daruifuno
Model Number :
MST1
Certification :
CE, ISO
Place of Origin :
China
MOQ :
Negotiable
Price :
Negotiable
Payment Terms :
T/T
Delivery Time :
1-45 work days
Packaging Details :
Carton
Product Name :
Chlorite/Chlorate Sensor
Product Model :
BR1MA
Measuring range: :
0.005~2.000; 0.05~2.00
Pressure Range :
0 ~ 5 (Flow cell)
Temperature Range :
0 ~ 40 ℃
Response Time :
T90: approx. 1 min.
Flow Rate :
15-30 l/h (33 – 66 cm/s)
Description

Two-Wire 4-20mA Chlorite/Chlorate Sensor For Swimming Pool Drinking Water Process Water And Seawater

The membrane-based chlorite/chlorate sensor with two-wire 4-20mA signal output has the following main advantages and features:

1. Stability and reliability
Membrane principle: The membrane separation technology can effectively avoid the influence of interfering ions (such as chloride ions, nitrates, etc.) and improve the selectivity and accuracy of the measurement.
Long-life electrode: The electrode design is durable and can maintain stable performance for a long time under complex water conditions.


2. Convenient signal transmission
Dual-wire 4-20mA output: No additional power supply line is required, suitable for long-distance signal transmission, strong anti-interference ability, good compatibility, and can be directly connected to control systems such as PLC and DCS.
Analog signal standardization: 4-20mA output is a standard interface in industrial automation control, which is convenient for seamless integration with existing systems.


3. Online real-time monitoring
Supports real-time monitoring of chlorite and chlorate concentration changes, can quickly respond to water quality changes, and is suitable for industrial process control and water treatment applications.


4. Low maintenance cost
Easy membrane replacement: The membrane assembly is easy to replace and the sensor life is extended.
Long calibration interval: stable measurement, reducing the need for frequent calibration and lowering operating costs.


5. Resistant to harsh environments
Anti-pollution design: The membrane structure can effectively prevent the adhesion of dirt and particles, and is suitable for various water quality conditions.
Wide range adaptability: It can work stably under different temperature, pH and pressure conditions.


6. Safety and environmental protection
Non-reagent method: No chemical reagents are required, reducing secondary pollution, and green and environmentally friendly.
Non-toxic materials: The main materials of the membrane and sensor are environmentally friendly and durable, and meet environmental protection and drinking water hygiene standards.

Three-electrode system, measuring chlorate and chlorite, used in swimming pools, drinking water, services, processes and seawater, reducing dependence on pH, tolerant to surfactants, no cross-sensitivity to chlorine dioxide, chlorine, and chlorate, and pressure resistance of 5 bar

Two-Wire 4-20mA Chlorite/Chlorate Sensor For Swimming Pool Drinking Water Process Water And Seawater

Specifications

Two-Wire 4-20mA Chlorite/Chlorate Sensor For Swimming Pool Drinking Water Process Water And Seawater

MST1
Indicator Chlorite
Application Drinking water, swimming pool water, service water, process water.
Appropriate chlorine dioxide production methods

e. g.

- Acid/chlorite-method

- Chlorine/chlorite-method
Measuring system Membrane covered, amperometric potentiostatic 3-electrode system

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)

Working temperature

Measuring water temperature: 0 … +40 °C

(no ice crystals in the measuring water)
Ambient temperature: 0 … +55 °C

Temperature compensation

Automatically, by an integrated temperature sensor

Max. change in temperature: 0.3 °C per minute, sudden temperature

changes must be avoided

max. allowed working pressure

Operation without retaining ring:

- 0.5 bar

- no pressure impulses and/or vibrations

Operation with retaining ring in flow cell:

- 5 bar,

- no pressure impulses and/or vibrations (see option 1)

Flow rate

(Incoming flow velocity)

 Approx. 15-30 L/h (33 – 66 cm/s) in flow cell
pH-range pH 6 – pH 9
Run-in time First start-up approx. 24 h
Response time T90: approx. 1 min
Zero point adjustment Normally not necessary
Calibration At the device, by analytical determination of the chlorite concentration

Two-Wire 4-20mA Chlorite/Chlorate Sensor For Swimming Pool Drinking Water Process Water And Seawater

MST1

Cross sensitivities/ interferences

Mn2+, Nitrite, Fe2+

No interference to Chlorine dioxide, Chlorine und Chlorate

Corrosion inhibitors can lead to measuring errors.

Stabilisers for water hardness can lead to measuring errors.
Absence of the disinfectant Max. 24 h

Connection

mV version: 5-pole M12, plug-on flange

Modbus version: 5-pole M12, plug-on flange

4-20 mA version: 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 Microporous hydrophilic membrane, PVC, PEEK, stainless steel

Size

diameter: approx. 25 mm

Length: mV version approx. 190 mm (analog signal processing)

approx.. 205 mm (digital signal processing)

Modbus version approx. 205 mm

4-20 mA version approx. 220 mm (2-pole-terminal)

approx. 190 mm (5-pole-M12)
Transport +5 … +50 °C (Sensor, electrolyte, membrane cap)

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

Change of the electrolyte: every 3 - 6 months

Two-Wire 4-20mA Chlorite/Chlorate Sensor For Swimming Pool Drinking Water Process Water And Seawater

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)

Two-Wire 4-20mA Chlorite/Chlorate Sensor For Swimming Pool Drinking Water Process Water And SeawaterTwo-Wire 4-20mA Chlorite/Chlorate Sensor For Swimming Pool Drinking Water Process Water And Seawater

Spare Parts

Type Membrane cap Electrolyte Emery O-ring
For all MST1

M48.2

Art. no. 11047

EMST1/GEL, 100 ml

Art. no. 11202

S2

Art. no. 11906

14 x 1.8 NBR

Art. no. 11806

(Subject to technical changes!)

Technical Data

1. MST1 (analog output, analog internal signal processing)

A potential-free electrical connection is necessary as the sensor electronic is not equipped with a galvanical isolation.

Two-Wire 4-20mA Chlorite/Chlorate Sensor For Swimming Pool Drinking Water Process Water And Seawater

Measuring range

in ppm

resolution

in ppm

 Output Output resistance

Nominal slope

(at pH 7.2)

in mV/ppm

 Voltage supply Connection
MST1H-M12 0.005…2.000 * 0.001

0…-2000mV

1 kΩ

 -1000

±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.

MST1N-M12

0.05…2.00 *

0.01

-100
MST1HUp-M12 0.005…2.000 * 0.001

0…+2000mV

1 kΩ

 +1000

10 - 30 VDC

10 mA

5-pole M12 plug-on flange

Function of wires:

PIN1: measuring signal

PIN2: +U

PIN3: power GND

PIN4: signal GND

PIN5: n. c.

MST1Up-M12

0.05…2.00 *

0.01

+100

* concentration tested and approved up to 2 ppm

(Subject to technical changes!)

2. MST1 (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.

Two-Wire 4-20mA Chlorite/Chlorate Sensor For Swimming Pool Drinking Water Process Water And Seawater

Measuring range

in ppm

Resolution

in ppm

Output

Output resistance

Nominal slope

in mV/ppm

 Power supply Connection
MST1H-An-M12 0.005…2.000 * 0.001

analog

0…-2 V

(max. -2.5V)

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.
MST1N-An-M12 0.05…2.00 * 0.01 -100
MST1H-Ap-M12 0.005…2.000 * 0.001

analog

0…+2 V (max. +2.5V)

1 kΩ

 +1000
MST1N-Ap-M12 0.05…2.00 * 0.01 +100

* concentration tested and approved up to 2 ppm

(Subject to technical changes!)

3. MST1 (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.

Two-Wire 4-20mA Chlorite/Chlorate Sensor For Swimming Pool Drinking Water Process Water And Seawater

Measuring range

in ppm

Resolution

in ppm

Output

Output resistance

 Power supply Connection

MST1H-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

MST1N-M0c

0.05…2.00 *

0.01

* concentration tested and approved up to 2 ppm

(Subject to technical changes!)

4. MST1 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

Two-Wire 4-20mA Chlorite/Chlorate Sensor For Swimming Pool Drinking Water Process Water And Seawater

Measuring range

in ppm

Resolution

in ppm

Output

Output resistance

Nominal slope

(at pH 7.2)

in mA/ppm

 Voltage supply Connection

MST1MA2

0.005…2.000 *

0.001

 4…20 mA
uncalibrated

8.0

12…30 VDC

RL 50Ω…RL 900Ω

2-pole terminal (2 x 1 mm²)

Recommended: Round cable

φ4 mm

2 x 0.34 mm²

MST1MA20

0.05…2.00 *

0.01

0.8

* concentration tested and approved up to 2 ppm

(Subject to technical changes!)

4.2 Electrical connection: 5 pole M12 plug-on flange

Two-Wire 4-20mA Chlorite/Chlorate Sensor For Swimming Pool Drinking Water Process Water And Seawater

Measuring range

in ppm

resolution

in ppm

Output

Output resistance

Nominal slope

(at pH 7.2)

in mA/ppm

 Voltage supply Connection

MST1MA2-M12

0.005…2.000 *

0.001

 4…20 mA uncalibrated

8.0

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.

MST1MA20-M12

0.05…2.00 *

0.01

0.8

* concentration tested and approved up to 2 ppm

(Subject to technical changes!)

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Two-Wire 4-20mA Chlorite/Chlorate Sensor For Swimming Pool Drinking Water Process Water And Seawater

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Product Detail
Brand Name :
Daruifuno
Model Number :
MST1
Certification :
CE, ISO
Place of Origin :
China
MOQ :
Negotiable
Price :
Negotiable
Contact Supplier
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Two-Wire 4-20mA Chlorite/Chlorate Sensor For Swimming Pool Drinking Water Process Water And Seawater
Two-Wire 4-20mA Chlorite/Chlorate Sensor For Swimming Pool Drinking Water Process Water And Seawater

Suzhou Delfino Environmental Technology Co., Ltd.

Verified Supplier
5 Years
jiangsu, suzhou
Since 2015
Business Type :
Manufacturer, Exporter, Seller
Main Products :
pH ORP Analyzer, pH ORP Controller, pH ORP Sensor
Certification Level :
Verified Supplier
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