MICS 4514 producing 0ppm
abhi_kdsc 2023-06-02 20:07:31 385 Views3 Replies I'm using mics 4514 gas sensor which shows values when brought near very high concentration but when brought in open air showing 0.00ppm for all gases. I'm confused if it is not working for lower concentration or it is defective since the datasheet shows the range from 0 to 1000. please help
Ethanol: 0.00 PPM
Methane: 0.00 PPM
Hydrogen: 0.00 PPM
Ammonia: 0.00 PPM
Carbon_Monoxide: 0.00 PPM
Nitrogen_Dioxide: 0.00 PPM
I'm using the provided library and example code
Hello Dears,
I'm using ESPHome with a D1 mini and I'm facing same issue.
Once turned on, after 3min in the log I have data saying that each of those values are at 0ppm.
I put a Smoke/cigarette next to it for 1 min and still 0 ppm for all.
Even after 24h of continuous run, I still have 0 ppm reported.
Could you please help us on the matter ?
Johann.Sax This sensor has a warm up time of 3 mins. Have you given this time?
https://wiki.dfrobot.com/_SKU_SEN0377_Gravity__MEMS_Gas_Sensor_CO__Alcohol__NO2___NH3___I2C___MiCS_4514
bidrohini.bidrohini That is not it; when you don't call the function to warmup the baseline values are not set and hence the sensor readings are useless.
The driver is poorly written…
