Topic: Ecowitt ECOWITT WN34BL always indicate ~2.5℉ high?

[HaraldS]

I have two Ecowitt liquid temp sensors WN34BL. Both indicate about 2.5℉ high. This is easily offset by calibration, but is this normal. Seems like a lot of offset.

[Rover1822]

OK, what are you comparing with?

[HaraldS]

Standard bulb thermometers. My electronic aquarium thermometer was calibrated against a couple of conventional ones.

[davidefa]

I'd say ntc sensors are not known for high accuracy ( standard ntc tolerances range from 1% to 5% ).
With 1 point calibration, calibrate it at medium or normal temperature usage and you should be ok ( with the above limits )