EST380 Thin Film High Temperature Pressure Transmitter
EST380 Heat-resistant High-Temperature Pressure Transmitters are lines of sputter film types featuring heat resistance, wide range and high accuracy. The product is widely used for the measurements of gas and liquid, such as water, oil and other light corrosive liquid and gas.
Features & Benefits
- Pressure type: Gauge/Seal gauge/Differential Pressure
- Customized working temperature: -40℃~150℃; -40℃~200℃
- Sputter film sensor
- All-welded, no O-rings
- Range: 0~0.1MPa~200MPa
- Accuracy: ±0.25%F.S, ±0.5%F.S
- Stability:0.25%F.S/Year (typical), 0.4%F.S/Year (maximum)
- Signal Output: 4~20mA, 0~10/20mA, 0/5~10V
- Power supply: 12~30Vdc
Applications
- Heavy Machinery
- Atmospheric Measurements
- Aerospace
- Packaging Machinery
- Petrochemicals
- Weather Monitoring
- Automatic Detection system
- Wind pressure Measurement
- High-rise Building Management
EST380 Key Features
| Range | Overload | Precision | Stability | Working Temperature | Insulation | Electric Strength | |
|---|---|---|---|---|---|---|---|
 | 0~0.1MPa…200MPa | 2 times | ±0.1~0.5%F.S | 0.25~0.4%F.S/Y | -50~230℃ | >100MΩ@50V | 500V@60second |
| Two wire | Three wire | Three wire | Four wire | Four wire | |
|---|---|---|---|---|---|
| Output Signal | 4~20mA | 0~20mA | 0~10mA | 0~5Vdc | 0~10Vdc |
| Power Supply | 0~30Vdc | 12~30Vdc/ac | 12~30Vdc/ac | 12~30Vdc/ac | 12~30Vdc/ac |
| Load Resistance | (U-10)/0.02(Ω) | (U-10)/0.02(Ω) | (U-10)/0.02(Ω) | >20k Ω | >20k Ω |
Technology
Piezoresistive-based transducers rely on the piezoresistive effect, which occurs when the electrical resistance of 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.
