High-Stability OEM Piezoresistive Pressure Sensor Core for Industrial Systems
OEM piezoresistive pressure/differential pressure sensor designed for industrial pressure measurement applications.
Product Overview
This OEM pressure sensor core utilizes an imported high-stability MEMS chip and features a 316L stainless steel diaphragm. The fully welded structure ensures long-term durability and reliability. It supports four pressure types: gauge pressure (G), absolute pressure (A), sealed pressure (S), and differential pressure (D), with a measurement range from -100 kPa to 70 MPa. Multiple output options include millivolt output, I²C digital output, 4–20 mA, and voltage output.
Each unit undergoes rigorous manufacturing and testing processes, including automatic diaphragm attachment, laser trimming, compensation testing, and aging screening to ensure consistent quality and reliable performance.
Technical Specifications
Pressure Type: Gauge (G), Absolute (A), Sealed Gauge (S), Differential (D)
Pressure Range: -100 kPa-0 kPa to 7 kPa-70 MPa
Output Signal: mV / I²C / 4–20 mA / Voltage
Diaphragm Material: 316L stainless steel (317L, Hastelloy, and tantalum optional)
Housing Material: 316L stainless steel
Non-linearity: ±0.2% FS (typical)
Operating Temperature: -40°C to +125°C
Long-Term Stability: ±0.1% FS/year
Protection Rating: Up to IP68 (SMP3003 Series)
Static Pressure Resistance: Up to 20 MPa (differential pressure models)
Overload Pressure: 2 * full scale
Application Areas
Industrial Automation: Hydraulic and pneumatic system monitoring, process control, and factory automation equipment
Medical Devices: Patient monitors, ventilators, and diagnostic instruments
HVAC Systems: Air handling units, chillers, and differential pressure monitoring for filters
Food Processing: The SMP2301 hygienic flush diaphragm series is suitable for viscous media and features a clamp connection for quick installation and easy cleaning
Petrochemical Industry: The SMP2400 shock-resistant series includes fully welded high-pressure models with pressure resistance up to 100 MPa
Water and Environmental Systems: Pump control, liquid level measurement, and pipeline pressure monitoring
Frequently Asked Questions
How do I choose the right pressure type?
- Gauge pressure (G) uses atmospheric pressure as the reference and is suitable for tank level measurement and pipeline pressure monitoring.
- Absolute pressure (A) uses a vacuum reference and is suitable for applications such as altitude compensation.
- Sealed pressure (S) is designed for high-pressure systems.
- Differential pressure (D) measures the pressure difference between two points and is commonly used in flow meters and filter differential pressure monitoring.
Can it measure viscous media?
Yes. The SMP2301 and SMP2400 series use a flush diaphragm design to help prevent clogging. The SMP2301 series also offers a clamp connection for easy removal and cleaning.
How do I choose the output type?
- If your system already has an ADC front end, millivolt output is the most cost-effective choice.
- For battery-powered devices, I²C digital output is recommended, with standby current as low as ≤0.1 mA.
- If direct connection to a PLC or DCS is required, choose 4–20 mA or voltage output.
Your message must be between 20-3,000 characters!
