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ESMDPSW LCD/LED display differential wind pressure transmitter with 4-20mA

The differential pressure transmitter uses imported pressure chips, and the sensitive element forms resistors through processes such as diffusion or ion implantation, which are connected into a Wheatstone bridge. Using micromachining technology, a pressure-sensitive diaphragm is formed beneath the bridge. When pressure is applied to the diaphragm, the resistance value changes, generating a linear output signal proportional to the applied pressure. By applying a DC power supply to the Wheatstone bridge, a DC voltage output signal is produced. After secondary conversion circuitry, a two-wire 4-20mA output is achieved.

    Working Principle

    The differential pressure transmitter uses imported pressure chips, and the sensitive element forms resistors through processes such as diffusion or ion implantation, which are connected into a Wheatstone bridge. Using micromachining technology, a pressure-sensitive diaphragm is formed beneath the bridge. When pressure is applied to the diaphragm, the resistance value changes, generating a linear output signal proportional to the applied pressure. By applying a DC power supply to the Wheatstone bridge, a DC voltage output signal is produced. After secondary conversion circuitry, a two-wire 4-20mA output is achieved.

    Product Features

    1. Compact design, easy to install, with an aluminum alloy casing for protection
    2. Damping filter design minimizes the impact of dynamic pressure
    3. Can be used for differential pressure, gauge pressure, and negative pressure measurements
    4. Optional low-power LCD display suitable for wide temperature ranges
    5. Zero and full-scale can be adjusted on-site
    6. Output signal, electrical connections, and pressure interfaces can all be customized

    Product detail

    ESMDPSW-1Product sizeWiring diagramApplication field

    Technical Specifications

    Measuring range

    -5KPA~0~5KPA

    Measuring medium

    GAS

    Accuracy class

    0.5%

    Output signal

    4-20mA (no display ; LED display ; LCD display );RS485

    Supply voltage

    12-30VDC

    Stability

    ≤0.1%FS/YEAR

    Overload capacity

    150%

    Ambient temperature

    -20~60℃

    Medium temperature

    -20~60℃

    Electrical connections

    Direct outlet

    Installation method

    M8 tower connector; PC8-M6 quick-connect fitting

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