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

Suzhou Delfino Environmental Technology Co., Ltd.
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    Buy cheap Two-Wire 4-20mA Chlorite/Chlorate Sensor For Swimming Pool Drinking Water Process Water And Seawater from wholesalers
     
    Buy cheap Two-Wire 4-20mA Chlorite/Chlorate Sensor For Swimming Pool Drinking Water Process Water And Seawater from wholesalers
    • Buy cheap Two-Wire 4-20mA Chlorite/Chlorate Sensor For Swimming Pool Drinking Water Process Water And Seawater from wholesalers
    • Buy cheap Two-Wire 4-20mA Chlorite/Chlorate Sensor For Swimming Pool Drinking Water Process Water And Seawater from wholesalers

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

    Ask Lasest Price
    Brand Name : Daruifuno
    Model Number : MST1
    Certification : CE, ISO
    Price : Negotiable
    Payment Terms : T/T
    Delivery Time : 1-45 work days
    • Product Details
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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


    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



    MST1

    IndicatorChlorite
    ApplicationDrinking water, swimming pool water, service water, process water.
    Appropriate chlorine dioxide production methods

    e. g.

    - Acid/chlorite-method

    - Chlorine/chlorite-method

    Measuring systemMembrane 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-rangepH 6 – pH 9
    Run-in timeFirst start-up approx. 24 h
    Response timeT90: approx. 1 min
    Zero point adjustmentNormally not necessary
    CalibrationAt the device, by analytical determination of the chlorite concentration



    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 disinfectantMax. 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

    materialMicroporous 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



    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)



    Spare Parts


    TypeMembrane capElectrolyteEmeryO-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.



    Measuring range


    in ppm

    resolution


    in ppm

    Output Output resistance

    Nominal slope

    (at pH 7.2)


    in mV/ppm

    Voltage supplyConnection
    MST1H-M120.005…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-M120.005…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.



    Measuring range


    in ppm

    Resolution


    in ppm

    Output

    Output resistance

    Nominal slope


    in mV/ppm

    Power supplyConnection
    MST1H-An-M120.005…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-M120.05…2.00 *0.01-100
    MST1H-Ap-M120.005…2.000 *0.001

    analog

    0…+2 V (max. +2.5V)

    1 kΩ

    +1000
    MST1N-Ap-M120.05…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.



    Measuring range


    in ppm

    Resolution


    in ppm

    Output

    Output resistance

    Power supplyConnection

    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



    Measuring range


    in ppm

    Resolution


    in ppm

    Output


    Output resistance

    Nominal slope

    (at pH 7.2)


    in mA/ppm

    Voltage supplyConnection

    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



    Measuring range


    in ppm

    resolution


    in ppm

    Output


    Output resistance

    Nominal slope

    (at pH 7.2)


    in mA/ppm

    Voltage supplyConnection

    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!)

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