Select Page

EST350X Compact Differential Pressure Transmitters


EST350X Compact Differential Pressure Transmitters

EST350X Compact Differential Pressure Transmitters are wide-range differential measuring devices. Featuring high reliability, stability and accuracy, the product is widely used for measuring differential pressure of liquid and gas. The product adopts 1Cr18Ni9Ti stainless steel or brass housing, imported oil fill DP sensor, specially designed V/I converting amplifying circuit, and features high-voltage/current protection, strong magnetic field and non-polarized connection. Non-polarized two-wire output and DC-AC three-wire output.


  • Pressure type: Differential Pressure
  • Range: 0~±5KPa…10000KPa
  • Accuracy: ±0.25%F.S, ±0.5%F.S
  • Stability: 0.25%F.S/Year(typical), 0.5%F.S/Year(maximum)
  • Customized working temperature: -40℃~120℃
  • Signal Output: 4~20mA, 0/5~10V
  • Power supply: 8/10/11~30Vdc/ac
  • Diffused silicon-oil fill system
  • Anti-EMI and Lightening protection
  • Ingress Protection: IP65
  • OEM: Available
RangeOverloadPrecisionStabilityWorking TemperatureInsulationElectric Strength
±5kPa…±5000KPa1.5 times±0.1~0.5%F.S0.1~0.2%F.S/Y-40~85℃>100M Ω @50V500V@60second
Two wireThree wireThree wireThree wire
Output Signal4~20mA0~5Vdc1~5Vdc0~10Vdc
Power Supply10~30Vdc8~30Vdc/ac8~30Vdc/ac11~30Vdc/ac
Load Resistance(U-10)/0.02(Ω)>100kΩ>100kΩ>100kΩ


Waterhead at hydropower station | Wastewater treatment| Urban flood control and waterlogging prevention | Underwater engineering | Groundwater monitoring | Air-supply system of thermal power plant | Oilfield flooding | Ventilation monitoring system under mine


Piezoresistive based transducers rely on the piezoresistive effect which occurs when the electrical resistance of a material changes in response to applied mechanical strain. In metals, this effect is realized when the change in geometry with applied mechanical strain results in a small increase or decrease in the resistance of the metal. The piezoresistive effect in silicon is due primarily to changes at the atomic level and is approximately two orders of magnitude larger than in metals.

Sputter deposited thin film pressure sensor is a kind of Piezoresistive pressure sensors, difference exist that the thin-film sensor consists of a resistor pattern that is vaporized or sputter-deposited  onto the force-summing element (the measuring diaphragm). In some transducers the resistors are not directly mounted on the diaphragm but are on a beam linked to the diaphragm by a push rod.

Accuracy and range for EST 3 series

eastsensor accuracy map

eastsensor map map

Click to download

  • General Instruction and Datasheet-EST350X GID-3-EV01
  • Product Enquiry