Zemic Celmi Standard Load Cells Celmi Instruments


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The BM02S is a piezo-resistive pressure sensor and an ADC interface. It provides 16bit word data for pressure and temperature related voltage. With the help of highly accurate calibration of the sensor, 5 unique coefficients were stored on the chip, plus accurate pressure a temperature reading can be realized. BM02S is a low power, low voltage device with automatic power down switching. I2C serial interface is used for communications with microprocessor.


Pressure measurement and control system.
Mobile altimeter/barometer system.
Weather forecast products.
Adventure or multi-mode watches.


  • 15bit ENOB ADC resolution.
  • Supply voltage: 2,0V-5,0V.
  • 0°C to +50°C operating range.
  • Integrated pressure sensor.
  • Pressure range: 300-1100hPa.
  • 16bit Σ-ΔADC.
  • 5 coefficients for software compensation stored on chip.
  • I2C serial interface.
  • One system clock line (32768Hz).
  • Low voltage, low power.