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EST370 Absolute Pressure Transmitters

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EST370 Absolute Pressure Transmitters

EST370 line Absolute Pressure Transmitters references to the absolute (vacuum) pressure. The product covers all the constructions and output connections of the company.

  1. Absolute Pressure (PABS) =Relative Pressure (Pg) +Atmospheric Pressure (B)
  2. Vacuum Degree (Kv) =Atmospheric pressure (B)-Absolute pressure (PABS),Kv=B-PABS, (B>PABS)

EST370 Absolute Pressure Transmitters drawing 1

Features

  • Pressure type: Absolute Pressure
  • Range: any pressure between 0.01MPa~40MPa
  • Accuracy: ±0.25%F.S, ±0.5%F.S
  • Stability0.25%F.S/Year (typical), 0.4%F.S/Year (maximum)
  • Customized working temperature: -40℃~125℃
  • Signal Output: 4~20mA, 0/5~10V
  • Power supply: 10/11~30Vdc, 6~24Vdc, 10/20~36Vac
  • OEM: Available
RangeOverloadPrecisionStabilityWorking TemperatureInsulationElectric Strength
0.01MPa…40MPa1.5 times±0.25~±0.5%F.S0.25~0.4%F.S/Y-40~85℃>100MΩ@50V500V@60second
Two wireThree wireThree wireThree wireThree wire
Load Resistance(U-10)/0.02(Ω)>100kΩ>100kΩ>100kΩ>100kΩ
Power Supply10~30Vdc6~24Vdc10~36Vac11~30Vdc20~36Vac
Output Signal4~20mA0~5Vdc0~5Vdc0~10Vdc0~10Vdc

Application

Atmospheric measurements | Aerospace | Packaging machinery | Petrochemicals | Weather monitoring | Automatic detection system | Wind pressure measurement | High-rise building management

Technology

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

EST370 Absolute Pressure Transmitters drawing 2

Click to download

  • General Instruction and Datasheet-EST370 GID-3-EV01
  • Product Enquiry