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.
Features
- 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
| Range | Overload | Precision | Stability | Working Temperature | Insulation | Electric Strength | |
|---|---|---|---|---|---|---|---|
 | ±5kPa…±5000KPa | 1.5 times | ±0.1~0.5%F.S | 0.1~0.2%F.S/Y | -40～85℃ | >100M Ω @50V | 500V@60second |
| Two wire | Three wire | Three wire | Three wire | |
|---|---|---|---|---|
| Output Signal | 4~20mA | 0~5Vdc | 1~5Vdc | 0~10Vdc |
| Power Supply | 10~30Vdc | 8~30Vdc/ac | 8~30Vdc/ac | 11~30Vdc/ac |
| Load Resistance | (U-10)/0.02(Ω) | >100kΩ | >100kΩ | >100kΩ |
Application
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
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
