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    Pressure Transducer for Air/Water/Oil, Output 4-20mA/0-10V/RS485

    5 out of 5 based on 3 reviews | Write a review
    Pressure transducer with classic 2088 type head can be used in humid or harsh environment for a long time. Pressure transducer has optional measuring range -0.1~60MPa/ -1~600bar/ -14~8702psi, medium temperature -40~+60℃ (-40~+140℉), special for air/water/oil pressure measurement. The internal ASICs convert the mV signal into a standard current (4-20mA/0-20mA), voltage (0-5V/1-5V/0-10V) or RS485 signal.
    SKU: ATO-PRES-P400
    30-day Returns
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    Delivery date: 6-12 days

    Pressure transducer for air/water/oil pressure measurement has optional output signal, such as 4-20mA/0-20mA/0-5V/1-5V/0-10V/RS485.

    Application: Pressure transducer is widely used in process control, chemical, petroleum and metallurgical industry and other fields.


    Model ATO-PRES-P400
    Weight 1.6kg
    Measuring range * -0.1~60MPa (-1~600bar/-14~8702psi)
    Pressure type Gauge pressure (standard)
    Contact us for absolute pressure, sealed pressure type (note that the measuring range for these two types must ≤1MPa)
    Measure medium Air, water, oil
    Power supply * DC 12V, DC 24V, DC 12-36V
    Output signal * 4-20mA, 0-20mA, 0-5V, 1-5V, 0-10V, RS485
    Accuracy * ±0.5%FS, ±0.3%FS, ±1%FS (when output signal is 0-5V or 0-10V)
    Zero temperature drift ±0.03%FS/℃
    Sensitivity temperature drift ±0.03%FS/℃
    Long term stability ≤0.2%FS/year
    Overload pressure 200%FS
    Frequency response (-3dB) 5kHz~650kHz
    Thread of pressure connection * G1/4, G1/2, 1/4NPT, 1/2NPT, M14*1.5, M20*1.5
    Response time <10ms
    Operating temperature -40~+80℃ (-40~+176℉)
    Medium temperature -40~+60℃ (-40~+140℉)
    Material Housing: 304 stainless steel
    Fill fluid: silicon oil
    Pressure port: 304 stainless steel, or 316L stainless steel (customizable)
    Separating diaphragm: 304 stainless steel, or 316L stainless steel (customizable)
    Protection class IP67

    Note: * denotes optional parameters, you can select every parameter in drop-down lists to finish your order.

    Pressure transducer dimension drawing (unit: mm):
    Pressure transducer dimensional drawing
    Pressure transducer wiring diagram:
    Pressure transducer wiring drawing
    Tips: Why the pressure transducer output signal is smaller than 4mA?
    When the differential pressure transducer and orifice plate cooperate to measure flow rate, blockage or severe leakage of high pressure connecting pipe in differential pressure transducer makes the pressure in negative pressure chamber higher than that of positive pressure chamber, the output current of pressure transducer is smaller than 4mA. The output of the differential pressure transducer can return normal through the drainage, dredging the connecting pies or sealing the leakage points. Reverse connection of the differential pressure transducer's high pressure and low pressure connecting pipes will make the output current smaller than 4mA, and smart pressure transducer can solve this problem only by selecting reverse output in parameter configuration.

    Measuring range conversion table:

    Unit kPa MPa bar psi
    Measuring range 0~5 0~0.005 0~0.05 0~0.7
    0~10 0~0.01 0~0.1 0~1.5
    0~20 0~0.02 0~0.2 0~3
    0~50 0~0.05 0~0.5 0~7
    0~100 0~0.1 0~1 0~14
    -100~0 -0.1~0 -1~0 -14~0
    -100~100 -0.1~0.1 -1~1 -14~14
    0~600 0~0.6 0~6 0~87
    0~1000 0~1 0~10 0~145
    0~1600 0~1.6 0~16 0~232
    0~2500 0~2.5 0~25 0~362
    0~6000 0~6 0~60 0~870
    0~10000 0~10 0~100 0~1450
    0~20000 0~20 0~200 0~2900
    0~30000 0~30 0~300 0~4351
    0~40000 0~40 0~400 0~5801
    0~50000 0~50 0~500 0~7252
    0~60000 0~60 0~600 0~8702
    0~100000 0~100 0~1000 0~14503

    Existing reviews of Pressure Transducer for Air/Water/Oil, Output 4-20mA/0-10V/RS485
    How to set the vfd?
    Hello, I purchased this pressure sensor from you. What settings would I need to configure on your 5hp VFD - GK3000-2S0037 to maintain 65-75 PSI?
    From: Jeff | Date: 03/03/2023
    Was this review helpful? Yes No (0/0)
    ATO Responded
    The pressure unit of our VFD is MPa, so you need to convert PSI pressure into MPa, 65-75 PSI is approximately equal to 0.5-0.52MPa. Please refer to the attached document and demonstration video to set the pressure parameters of constant pressure water supply (P7.05, P7.19, P7.20, P7.27).
    Video link:
    I want to ask you a question about the pressure sensor
    I want to ask you can I connect the pressure sensor output RS485 directly with pc by used cable RS485 converter, also can I connect 4 sensors to the computer at the same time?
    From: Michaele | Date: 17/12/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes. First, all four sensors and PC (such as touch screens) must support RS485 communication protocol.
    Best Pressure Transducer for Air/Water/Oil
    We bought a lot of pressure transducers from different companies and compared them. We finally confirmed that ATO pressure transducer is the best. After the test, all its parameters are the best for measuring air/water/oil pressure. And then it is perfect in workmanship. Of course, we finally have to look at how long the service life of ATO pressure transducer will be.
    From: Alex | Date: 17/01/2019
    Was this review helpful? Yes No (0/0)
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