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Miniature Quartz Pressure Sensor Attains a Resolution of 0.3 Pa in a Tiny 7.0 x 5.0 mm Package *Preliminary

Miniature, high-precision quartz pressure sensor High precision & stability *Small size: 7.0 x 5.0 x 2.0t mm

High-precision sensors react only to pressure and are resistant to the effects of external disturbances such as temperature, humidity, physical shocks, and vibrations.
Quartz is a stable material that can be used as a sensing element in high-precision pressure sensors that resist the effects of external disturbances.

Point! The use of quartz enables tiny sensors that offer high precision.　*Small size 7.0 × 5.0 × 2.0t mm (approx. 1/200th the size of our previous sensor) *High resolution *Measures very slight (0.3 Pa) changes in pressure *High stability *Resistant to the effects of changes in temperature and the environment

The Key to Epson Toyocom's Quartz Pressure SensorsClick here for more details about quartz pressure sensors.

Experimental proof of precision

You can see the actual noise characteristics of our sensor versus those of a competitor's MEMS sensor.

Epson Toyocom's Quartz Pressure Sensor Competitor's MEMS Pressure Sensor Measurement conditions: Results of evaluations performed by Epson Toyocom at 25°C and 100 kPa (absolute pressure)

Quartz provides highly stable characteristics. Featuring outstanding stability, high-resolution, high-precision quartz pressure sensors have a diverse range of applications.

Experimental proof on a demo unit

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When altitude changes by 1 cm, atmospheric pressure also changes very slightly. The amount of changes is very small, only about 0.1 Pa. This demo unit demonstrates the high precision of our quartz pressure sensor. A quartz pressure sensor having a resolution of 0.3 Pa is mounted in the cars of the model train. The sensor measure differences in elevation as the model train travels up and down.

Application examples

  • Security - Security systems
  • Navigation systems - GPS interpolation
  • Scales - Weighing of fine powders
  • Speed meter - Swing velocity measurements

More uses

We came up with even more ideas for applications that can take advantage of the quartz pressure sensors high accuracy.
We measured the head speed of a golf club being swung.

Interesting Uses Calculating speed from acceleration requires integration and other complex computations, and the error is large. Velocity can be found with minimal computation error and high accuracy by using the quartz pressure sensor to detect wind speed velocity.

Specifications

Items Specifications
Pressure measurement range 30 kPa to 130 kPa
Overall accuracy ±30 Pa Max.
Linearity ±5 Pa Max.
Repeatability ±5 Pa Max.
Temperature characteristics ±20 Pa Max.
Resolution 0.3 Pa
Operating temperature range -30 °C to +85 °C
Temperature sensor Built in
I/O interface I2C
Supply voltage +3.3 VDC
External dimensions (mm) 7.0 × 5.0 × 2.0t (Max.)
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