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Atmospheric Pressure Sensor
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    Atmospheric Pressure Sensor

    The Veswe Atmospheric Pressure Sensor is equipped with an imported high-precision measuring unit and built-in temperature compensation technology. This ensures exceptional performance with high stability, minimal drift, and highly reliable repeatability for accurate pressure readings.

    Featuring a convenient wall-mounted design, installation is quick and hassle-free. This sensor is the ideal solution for altimeters, agricultural greenhouses, automatic weather stations, and archives requiring continuous and precise atmospheric pressure monitoring.

    • Model: VRS-QY-&-2D-LCD-EX
    • MOQ: 1 PCS
    • Delivery date: within 24 hours
    • Inquire About Price Now
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    veswe Atmospheric Pressure Sensor

    VRS-QY-&-2D-LCD-EX atmospheric pressure sensor measures a wide range of 0-120kPa air pressure, which can be applied to various altitudes. The measured data can be directly displayed on the LCD screen or uploaded to the free cloud platform via RS485 signal. Optional built-in temperature and humidity sensor can be used to monitor atmospheric pressure, temperature and humidity at the same time. The back of the atmospheric pressure sensor housing is equipped with a slide rail mounting plate, which supports wall mounting or guide rail mounting.

    OutputRS4854~20mA/0~5V/0~10V
    Power supply10~30V DC
    Max. power consumption≤0.5W1.2W
    Measure range0~120kPa
    Accuracy±0.15kPa@25℃ 101kPa
    Operating temperature-40℃~+60℃, 0%RH~95%RH (non-condensing)
    Long-term stability-0.1kPa/year
    Response time≤2s
    Load capacity—resistance ≤ 250Ω, current ≤ 600Ω

    Atmospheric Pressure Sensor Wiring

    The wide voltage power input is 10~30V. When wiring the 485 signal line, please note that the A/B lines cannot be connected in reverse, and the addresses of multiple devices on the bus cannot conflict.

    Wiring Instructions

     Circuit identificationDescription
    Power supplyVCCPositive power supply (10~30V DC)
    GNDNegative power supply
    Communication485A485-A
    485B485-B

    Register Address

    Register addressPLC or configuration addressContentSupported function codeDescription
    0000 H40001Air pressure (unit: kPa)0x03/0x04Real-time value (expanded 10 times)
    0051 H40082Air pressure calibration value0x03/0x04/0x06Integer (expanded 10 times)
    07D0 H42001Device address0x03/0x04/0x061~254 (factory default 1)
    07D1 H42002Device baud rate0x03/0x04/0x060 represents 2400
    1 represents 4800
    2 represents 9600
    3 represents 19200
    4 represents 38400
    5 represents 57600
    6 represents 115200
    7 represents 1200

    Power supply wiring

    Wide voltage 10~30V DC power input. For 0-10V output type equipment, only 24V power supply can be used.

    Output interface wiring

    The standard equipment has 1 independent analog output. It is suitable for both three-wire and four-wire systems.

    Wiring Instructions

     Circuit identificationDescription
    Power supplyVCCPower supply positive
    GNDPower supply negative/signal negative
    OutputTHReserved
    RHAtmospheric pressure signal positive

    Current output signal conversion calculation

    For example, the range is 0~120kpa, 4~20mA output, when the output signal is 12mA, calculate the current air pressure value. The span of this air pressure range is 120kpa, expressed by 16mA current signal, 120kpa/16mA=7.5kpa/mA, that is, 1mA current represents a pressure change of 7.5kpa, the measured value is 12mA-4mA=8mA, 8mA*7.5kpa/mA=60kpa. 60+0=60kpa, the current air pressure is 60kpa.

     

    Voltage output signal conversion calculation

    For example, the range is 0~120kpa, 0-10V output, when the output signal is 5V, calculate the current air pressure value. The span of this air pressure range is 120kpa, which is expressed by a 10V voltage signal. 120kpa/10V=12kpa/V, that is, a voltage of 1V represents a pressure change of 12kpa, and the measured value is 5V-0V=5V.5V*12kpa/V=60kpa. 60+0=20kpa, and the current air pressure is 60kpa.

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      Our colleague: Jack
      Phone/ Whatsapp: +86 13418148929
      Email: contact@veswe.com
      Address:Floors 1–4, No. 269 Nanda Highway, Dashi Street ,Panyu , Guangzhou, Guangdongdong, China