EST350 Differential Pressure Transmitters

EST350 Differential Pressure Transmitters – SILICONE PIEZO RESISTIVE

EST350 is kind of differential pressure transmitters, based on the silicone piezo-resistive measuring principle, the sensing element is a diffused silicon piezoresistive differential pressure sensor ESS320, with a stainless steel 316L isolation diaphragm. The reliable performance of the DP sensor is due to temperature compensation and aging screening. It enables zero and full scale to be adjusted externally.

EST350 uses highly reliable silicon piezoresistive differential pressure sensors and other core sensitive components which undergo temperature compensation, digital circuit correction, and signal conditioning to output standard industrial signals.

Each model in this series is meticulously designed, with component selection, process validation bonding, cyclic loading for stress relief, aging, and environmental simulation testing to ensure stability and reliability of every product.

Features & Benefits

Pressure Type: Differential Pressure
Range: 0-0.1Mpa-3.5Mpa/①; 0-20Kpa-100Kpa/②
Accuracy: ±25%F.S/①, ±0.5%F.S/②
Stability: 1%F.S/Year（typical）, 0.2%F.S/Year（maximum）
Medium Temperature: -40℃~80℃
Signal Output: 4~20mA, RS485, 0~10V, 1~5V
Power Supply: 12~30Vdc/ac,
Sensing: Diffused Silicon-oil fill system
Anti-EMI and Lightening Protection
Ingress Protection: IP65/IP67

Applications

Flow measurement
Wastewater treatment
Wind Diff Pressure under mine
Water Diff Pressure at hydropower station
Urban flood control and waterlogging prevention
Underwater engineering
Groundwater monitoring
Central air-conditioning terminal control
Water-saving Irrigation

EST3140 Technical Data & Performance

Pressure Type	Differential Pressure
Range	0-0.1Mpa-3.5Mpa/①	0-20Kpa-100Kpa/②
Accuracy	±0.25%F.S/①	±0.5%F.S/②
Stability	0.1%F.S/Year（regular)	0.2%F.S/Year（max）
Medium Temperature	-40℃~80℃
Signal Output	4~20mA	0~10V, 1~5V	RS485
Power Supply	12~30Vdc/ac
Sensing	Diffused Silicon Oil Filled ESS320
IP	65	67
Anti-EMI and Lightening Protection	Yes