EST-Air High Accuracy Pressure Transmitters | Aviation Industry

Featuring high accuracy, high reliability, and full temperature compensation, the EST-air line is widely used for the measurements of gas and liquid, such as water, oil and light corrosive liquid and gas. The product adopts 1Cr18Ni9Ti stainless steel construction, high-accuracy sensor, and specially designed converting circuit. It is easy to perform zero/span trim. Two wire circulating current output; Three-wire voltage/current output

Features

Pressure type: Gauge Pressure
Range: 0~0.1MPa…60MPa
Accuracy: ±0.1%F.S
Stability: 0.1%F.S/Year (typical)
Customized working temperature: -40℃~85℃
Signal Output:4~20mA, 1~5V, 0.5~4.5V
Power supply: 10~30Vdc, 5V(Ratio), 8~30Vdc
OEM: Available

	Range	Overload	Precision	Stability	Working Temperature	Insulation	Electric Strength
	0~0.1Mpa…60Mpa	2 times	±0.1%F.S	0.1%F.S/Y	-40～85℃	>100MΩ@50V	500V@60second

	Two wire	Three wire	Three wire
Output Signal	4~20mA	1~5Vdc	0.5~4.5Vdc
Power Supply	10~30Vdc	8~30Vdc	5V(Ratio)
Load Resistance	(U-10)/0.02(Ω)	>100kΩ	>100kΩ

Application

VRF Hydraulic control | Energy and Transportation | Shipbuilding industry| Offshore oilfield | Energy and Water treatment

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.