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ESMP001 Large range Gas Mass Flow Meter with 4-20mA/RS485 Output

Micro gas mass flow meters is specially designed for the measurement and process control of various types of small flow gases.This series of sensors are made with advanced micro-electro-mechanical system flow sensing chips, and are suitable for all types of clean gases. The Unique packaging technology makes it suitable for a wide range of pipe sizes, low cost, easy installation, no temperature and pressure compensation, and can replace traditional volumetric or differential pressure flow meters.

    Working Principle

    The MEMS sensor consists of two patch platinum resistors, one measuring the temperature of the gas in the pipe and the other heated by an electric current, keeping the temperature difference between the two thermal resistors constant. As the gas flows through the thermal resistance, there is a cooling effect. As the flow rate increases, the cooling effect increases and the sensor power required to keep the temperature difference between the two thermal resistors constant increases.The power added to the heating resistance is proportional to the mass flow rate

    Product features

    1.Using flow sensor chip, the sensor has the characteristics of high precision, high sensitivity and strong anti-interference.

    2.Thisproduct has display screen and setting buttons, which is easy to operate and read directly.(optional)

    3.The zero point stability of the sensor is greatly improved compared with the ordinary thermal flow meters.

    4.Full range high stability.

    5.Full range precision and excellent repeatability.

    6.Combined with structural optimization, the flow meter can greatly reduce pressure loss and energy consumption compared with traditional mechanical instruments.

    7.LCD display instantaneous flow and cumulative flow, clear and intuitive, easy to read.

    8.4~20mA standard signal output and second impulse output to choose.

    Technical parameters

    Model Number

    ESMP001

    Measurement accuracy

    ±(1.5 + 0.5FS) %

    Flow range

    60Nm3/h;100Nm3/h;160Nm3/h;240Nm3/h

    Output

    4-20mA

    Communication method

    RS485 Modbus

    Display mode

    LCD

    Power Supply

    DC24V

    Maximum working pressure

    ≤ 2.0MPa

    Operating temperature

    -10~55 ℃

    Storage temperature

    -10 to 65 ° C

    Thread

    G1

    Turndown ratio

    1:100

    Pipe diameter

    DN20;DN25;DN32;DN40

    Thermal mass flow meter

    model

    Pipe diameter

    Flow range

    medium

    pressure

    output

    interface

    ESMP001-20-60

    DN20

    0.6-60Nm3/h

    gas

    ≤1.6MPA

    4-20mA/RS485

    G3/4

    ESMP001-25-100

    DN25

    1-100Nm3/h

    G1

    ESMP001-32-160

    DN32

    1.6-160Nm3/h

    G1-1/4

    ESMP001-40-240

    DN40

    2.4-240Nm3/h

    G1-1/2

    Product detail

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