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    Digital Pressure Sensor for Hydraulic/Steam/Air

    5 out of 5 based on 3 reviews | Write a review
    Digital pressure sensor has a LCD screen with backlight and power supply DC 24V/12V, can output current signal (4-20mA/0-20mA), voltage signal (0-5V/1-5V/0-10V) or RS485 signal. Pressure sensor has small size, light weight, high anti-vibration and anti-shock performance, measuring range -0.1~100MPa/ -1~1000bar/ -14~14503psi, medium temperature -40~+60℃ (-40~+140℉), for hydraulic/steam/air pressure/high-temperature liquid measurement.
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    Delivery date: 6-12 days

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

    Application: Pressure sensor is widely used in process control, aerospace, automotive, medical equipment, HVAC and other fields.


    Model ATO-PRES-PX300
    Weight 0.4kg
    Measuring range * -0.1~100MPa (-1~1000bar/-14~14503psi)
    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 Hydraulic, steam, air, high-temperature liquid (non-explosion proof area)
    Power supply * DC 12V, DC 24V, DC 12-36V
    Output signal * 2 wire: 4-20mA, 0-20mA
    3 wire: 0-5V, 1-5V, 0-10V
    (Note: Pressure sensor designed without LCD screen for 2 wire 0-20mA, 3 wire 0-5V, 1-5V, 0-10V and RS485 output signal)
    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
    Electrical connection * DIN connector type, M12 circular connector type, direct lead wire type
    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)
    Sealing: FKM (medium temperature ≤ +200℃/+392℉), EPDM, NBR
    Cable length 2m
    Protection class IP65

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

    Pressure sensor dimension drawing (unit: mm):
    Digital pressure sensor dimensional drawing
    Pressure sensor wiring diagram:
    Pressure sensor wiring diagram

    RS485 output wiring diagram

    RS485 output wiring diagram

    Note: For the output signal RS485, it is only a 485 communication protocol, if you need the data to be received from the PC through the RS485 port, then the PC used should be a PC for industrial application, which can support 485 communication function (such as touch screen HMI upper computer, etc.), A USB to 485 communication interface is also needed to connect the sensor to the PC.

    Tips: Selection of pressure sensor sensitivity
    Generally, within the linear range of sensor, it is better that the sensitivity of pressure sensor is as high as possible. Only when the sensitivity is high, the value of output signal corresponding to the measured change is relatively large, which is conducive to signal processing. However, it should be noted that if the sensitivity of pressure sensor is too high, the external noise which is irrelevant to the measurement is easy to mix in, which will also be amplified by the amplification system, thus affecting the measurement accuracy. Therefore, it is required that the digital pressure sensor itself should have a high signal noise ratio to minimize the interference signal introduction from the outside.
    The sensitivity of digital pressure sensor is directional. When the measured object is a single vector and has high directional requirements, the sensor with low sensitivity in other directions should be selected. If the measured vector is a multi-dimensional vector, it is better to select the digital pressure sensor with smaller cross sensitivity.

    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

    This is a simple video about how to wire a 4-20mA output pressure sensor.

    Existing reviews of Digital Pressure Sensor for Hydraulic/Steam/Air
    High quality pressure sensor
    I used two of these to monitor supply line and output pressure for drinking water system, along with a flow-meter. This pressure sensor is better than expected. Very easy to use and would recommend.
    From: Octavio | Date: 22/03/2022
    Was this review helpful? Yes No (0/0)
    Good pressure sensor
    Perfect fit and easy to install, saves me a lot of money. I'm very satisfied with this purchase. I will purchase this pressure sensor again.
    From: Javier | Date: 16/03/2022
    Was this review helpful? Yes No (0/0)
    Pressure range of digital pressure sensor
    We are needing pressure transducers for continuous pressure measurement, gage type. Water and air pressure transducer pressure range: -0.1~0-0.02~100MPa. Do you proivde?
    From: Hudson | Date: 19/05/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Unfortunately, don't provide, as the pressure of 100Mpa is too high, our pressure sensor supports only up to 60Mpa.
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