Differential pressure sensor

The ICS-NH DPH 100 Series is an SOI-based differential pressure sensor designed for demanding applications requiring stable pressure measurement across an extremely wide operating temperature range. The sensor measures 0 to 400kPa differential pressure and uses an isolated construction with 316L stainless steel in media contact, making it suitable for gas, liquid, fuel and oil applications where material compatibility is required. Designed for wet-wet differential pressure measurement, the DPH 100 Series supports applications such as filter monitoring, volume measurement and flow measurement. The mechanical construction uses a 316L stainless steel diaphragm and housing, with flexible PTFE or silicone wiring options and an FVMQ O-ring seal. The sensor operates from a 3–20 V DC constant voltage power supply and provides a raw millivolt output, with a typical 75mVDC full-scale output. It offers a fast response time of <1ms, input and output impedance of 8 to 11kΩ, and has been vibration tested to DO-160 Cat. H and R.

Key Features

• SOI-based differential pressure sensor
• Differential pressure range: 0 to 400kPa
• Operating temperature range: -65°C to +170°C
• Storage temperature range: -68°C to +180°C
• Power supply: 3 to 20 V DC
• Typical full-scale output: 75mVDC
• Response time: <1ms
• Input impedance: 8 to 11kΩ
• Output impedance: 8 to 11kΩ
• Linearity: ±0.1% FS typical; ±0.35% FS max.
• Repeatability: ±0.025% FS
• Hysteresis: ±0.05% FS
• Zero output: ±3mVDC
• Long-term stability: ±0.3% FS/year typical; ±0.5% FS/year max.
• Maximum static pressure: 30 MPa / 300 bar
• Diaphragm and housing material: 316L stainless steel
• Media compatibility: gas or liquid compatible with stainless steel and FVMQ
• Vibration tested to DO-160 Cat. H and R
• Impact resistance: 100g, 11ms

Application Industries and Use Cases

• Industrial Process Control: Wet-wet differential pressure measurement in gas, liquid, fuel and oil systems.
• Filter Monitoring: Detecting pressure drop across filters to support maintenance and system protection.
• Flow & Volume Measurement: Differential pressure sensing for flow calculation and volume monitoring.
• Aerospace & Transport Systems: Pressure measurement in vibration-prone environments requiring DO-160 tested sensor performance.