SDP3x
Differential Pressure Sensor
- Smallest size (5mm x 8mm x 5mm), opening up new dimension of integration and applications possibilities
- Measurement range ±500Pa (±2 in. H2O) or ±125Pa (±0.5 in. H2O), for other ranges, contact Sensirion
- Excellent accuracy and repeatability, even below 1Pa
- No zero-point offset, no drift
- Calibrated and temperature compensated
- Fast sampling time of 2kHz at 16-bit resolution
- Digital I2C and analog output versions
- Reflow solderable, shipped in tape and reel for pick and place
- Smart averaging algorithm and other digital and analog features
Product Description
The SDP3x sensor family is Sensirion’s series of small differential pressure sensors designed for high-volume applications where size is a key requirement. It builds on the next generation CMOSens® sensor chip that is at the heart of Sensirion’s new differential pressure and flow sensing platform. The digital SDP3x sensor features fast measurement speed, excellent accuracy and long-term stability and has no zero-point drift. Furthermore, it is reflow solderable and provides extended functionality, such as smart averaging, multiple temperature compensation modes, configurable I2C address and interrupts.
Differential Pressure Specifications
| Parameter | SDP31 | SDP32 |
|---|---|---|
| Measurement range | -500 to 500 Pa (-2 to 2 inH2O) |
-125 to 125 Pa (-0.5 to 0.5 inH2O) |
| Zero point accuracy | 0.1 Pa | 0.08 Pa |
| Span accuracy | 3% of reading | 3% of reading |
| Zero point repeatability | 0.03 Pa | 0.025 Pa |
| Span repeatability | 0.5% of reading | 0.5% of reading |
| Span shift due to temperature variation | <0.5% of reading per 10°C | <0.5% of reading per 10°C |
| Offset stability | <0.01 Pa/year | <0.01 Pa/year |
| Flow step response time | <3ms | <3ms |
| Resolution | 16 bit | 16 bit |
| Calibrated for | Air, N2 | Air, N2 |
| Media compatibility | Air, N2, O2, non-condensing | Air, N2, O2, non-condensing |
| Calibrated temperature range | -40°C to +85°C | -40°C to +85°C |
