MS5540C 압력/대기압 센서
(Barometer/Pressure Sensor -MS5540C)
개요
- 본 제품은 MS5540C 압력/대기압 센서입니다.
- 정교한 피에조저항식 압력 센서로 MS5540C 압력센서를 탑재하고 있습니다.
- 압력 데이터를 16비트 분해능의 ADC 가 SPI 인터페이스로 제공합니다.
- 센서의 겔 보호 부분은 최대 100미터까지 방수가 가능합니다.
특징
- Operating temperature range: -40 ° C ~ 85 ° C
- Absolute pressure range: 10 - 1100 mbar
- Temperature range: -40 ° C ~ 85 ° C
- Resolution 0.1 mbar and 0.01 °C
- Accuracy: -2 to 5 mbar ±2 °C
- Response time: 35ms
- Chip storage 6 parameters for software compensation
- Piezoresistive silicon microsensor
- Integrated miniature pressure sensor 6.2x6.4 mm
- 16-bit ADC, SPI3 line serial interface 500KHz
- 1 system clock (32.768 kHz)
- Operating voltage: 2.2 V to 3.6 V
- Working current: < 5uA
- RoHS: Compatible & Pb-free
- Working temperature: -40 ° C ~ +85 ° C
- Waterproof, maximum water depth 100 meters (ISO2281)
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Pin Description
- VDD: power supply pin, recommended 3V
- MCLK: Host clock input 32.768KHz
- SCLK: SPI clock input
- DIN: serial data input
- DOUT: Serial data output
문서
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Important Notes:
1- When using the pressure sensor for underwater applications, user MUST isolate all the metal contacts (For example using melted wax), the only part that is left exposed to water is the sensor surface (the white gel surface should not be covered or touched).
2- Special care has to be taken to not mechanically damage the gel. Damaged gel could lead to air entrapment and consequently to unstable sensor signal. Do not test the sensor by pressing the surface with your finger or any hard metal
3- The sensor can withstand up to 100 meter under water, however the linear range for factory calibrated coefficients stored on the sensor ROM adjusted for linear range of about 7m. If you want more linear range you may calibrate your own factors and use each group of factors for each range.
Water depeth (level) sensor Arduino tutorial and code
Application note on using the water-depth sensor in snorkling