I have just received a second Emonth V2 to use with 2 external DS18B20 sensors to monitor my gas boiler in & outlet temperatures. I thought that I would place them next to each other (3cm’s apart) indoors and compare the readings to check their operating accuracy before I flashed one of them to support 2 DS18B20’s.
The declared specification is (emonTH -Temperature & Humidity Node):
- Accuracy humidity ±3%RH
- Accuracy Temperature: ±0.4 degC.
Over the past 18 hrs I have calculated:
- Humidity difference of 2-4%RH (average of 2%RH)
- Temp difference of 0.0-0.4 degC (average of 0.3 degC)
Is it advisable to use the ‘Calibration’ function on the INPUT to provide my emonTH FEEDs with similar data points or is there a reason not to do this?