HT20 Differential Pressure Sensor
Introduction of differential silicon pressure sensor:
The HT20 differntial silicon pressure senor is a silicon piezoresistive differential pressure sensor with a core of highly stable diffused silicon element. The core is enclosed in a 316L stainless steel housing, and the pressure is transmitted through a stainless steel diaphragm and sealed silicon oil to the sensitive chip. The sensitive chip does not directly contact the measured medium, forming a fully solid-state structure for pressure measurement, enabling precise measurement of differential pressure. Therefore, this product can be applied in various scenarios that require differential pressure measurement, including harsh and corrosive environments
Product Features of differential silicon pressure sensor:
- Stable and reliable performance
- High resistance to static pressure
- Cost-effective
- Utilizes silicon piezoresistive oil-filled pressure-sensitive element
Applications of differential silicon pressure sensor: - Differential pressure detectiony
- Pressure calibration instruments
- Liquid level measurement
- Industrial process control
Electrical performance of differential silicon pressure sensor: - Power Supply: ≤2mA DC (Typical 1.5mA DC)
- Input Impedance:3KΩ~6KΩ
- Output Impedance:2.5KΩ~6KΩ
- Electrical Connection:Gold-plated Kovar pins or 100mm high-temperature wires
| Performance Parameters of differential silicon pressure sensor: |
| Measurement Range | 10KPa,35KPa,100KPa,200KPa,350KPa,1000KPa,2000Kpa |
| | Typ | Max | Unit |
| Linearity | ±0.15 | ±0.3 | %F.S |
| Repeatability | 0.05 | 0.1 | %F.S |
| Hysteresis | 0.05 | 0.1 | %F.S |
| Zero Offset Output | 0±1 | 0±2 | mV |
| Full Scale Output | ≤20KPa | 50±10 | 50±30 | mV | |
| ≥35kPa | 100±10 | 100±30 | mV | |
| Zero Offset Temp. Drift | ≤20KPa | ±1 | ±2 | %F.S | |
| ≥35kPa | ±0.5 | ±1 | %F.S | |
| Full Scale Temp. Drift | ≤20KPa | ±1 | ±2 | %F.S | |
| ≥35kPa | ±0.5 | ±1 | %F.S | |
| Compensated Temp. | ≤20KPa | 0~50 | ºC | |
| ≥35kPa | 0~70 | ºC | |
| Operating Temperature | -20~80 | ºC | |
| Storage Temperature | -40~125 | ºC | |
| Allowable Overload | Take the smaller value between 3 times the full scale or 4MPa | | |
| Burst Pressure | 5X the full scale | | |
| Long-term Stability | 0.2 % | F.S/Year | |
| Diaphragm Material | 316L | | |
| Insulation Resistance | ≥200MΩ 100VDC | | |
| Vibration | No change under conditions of 10gRMS, 20Hz to 2000Hz | | |
| Shock | 100g,11ms | | |
| Response Time | ≤1ms | | |
| O-ring Seal | Nitrile rubber or Fluoro rubber | | |
| Filling Medium | Silicon Oil | | |
| Weight | ~45g | | |
| The parameters are tested under the following conditions: 1.5mA @ 25°C | |
| Outline Construction |
| Dimension |  |
| Notes:The outgoing end is the positive terminal. If there are any changes in the wire colors, please refer to the label attached to the sensor for accurate information |
| Electrical connection and compensation of differential silicon pressure sensor |
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1. Pay attention to the fit between the core size and the transmitter housing during assembly to achieve the required airtightness
2. During the assembly of the housing, ensure it is aligned vertically and apply even pressure to avoid jamming or damaging the compensation plate.
3. If the measured medium is not compatible with the core diaphragm and the housing material (316L), special instructions should be provided when placing the order.
4. Avoid pressing the sensor diaphragm with hands or sharp objects to prevent damage to the core due to diaphragm deformation or piercing.
5. Keep the pressure port of the gauge pressure core open to the atmosphere and prevent the entry of water, water vapor, or corrosive media into the core negative pressure chamber.
6. If there are any changes to the pin leads, follow the label on the actual core for reference.
