China Air Flow Sensor for Ventilator

Product Description

Detailed Images

Note:
1.The measuring range within 20-300SLM.
2.SLM means standard liter per minute. Standard-state: gas temperature is 0ºC and pressure is 101.325 kPa. The testing environment
is room temperature and clear air.
3.The response time could be customized for 15-1000ms.
4.The temperature compensation is for the tem. range of 0-50ºC and the compensation performance can't be ensured beyond the
temperature range. Pins Definition

pinFunction1(black or gray)GND2(red)VCC3(yellow)OUT
Calculation for Airflow
Actual flow=full scale * (sensor actual output voltage-zero output voltage) / (full scale output voltage-zero output voltage) For
example: the sensor full scale is 200 SLM, the sensor zero output voltage is 0.5V and full scale output voltage is 4.5V, and the
actual output is 3.5V. Then the actual flow=200 SLM * (3.5V - 0.5V)/(4.5V- 0.5V) = 150SLM
Cautions
1. The air inlet and air outlet of the sensor need to be equipped with long straight pipe to ensure the product's performance. It
is recommended to leave a straight pipe for the inlet with 10 times longer than the pipe diameter while the outlet will be 5 times
longer.
2. If measured gas medium contains dirt, the sensor's lifespan will be shortened. We suggest users equip the sensor flow inlet
with 5 micrometer precise filter.
3. The sensitivity of the product will reduce or be damaged if it contacts to water.
4. The wrong connecting of power supply will damage the internal circuit.