Thermistor

Maybe what you have is a thermistor, which is not linear. ❋ Le_Noble (2010)

That could be either good or bad depending upon the kind of thermistor and the mass that it is attached to. ❋ Unknown (2007)

The probable reason for this: "poorly-situated" stations are predominantly MMTS (aspirated thermistor) sites which have a known cool bias compared to the Liquid in Glass stations (which tend to make up the "well-sited" sites.) ❋ EliRabett (2010)

The heat energy resulting from the direct absorption of solar energy by the glass and mercury instrument or thermistor is eliminated by shading the thermometer. ❋ Unknown (2007)

I was looking for something subtle like thermistor drift but what you describe is classic FUBAR. ❋ Unknown (2007)

While a thermistor will give you great resolution, a thermocouple has lower thermal mass if you want rapid response time like in an instant read digital kitchen thermometer and a PT100 resistance thermometer is more stable. ❋ Unknown (2007)

The NWS has replaced a majority of the liquid-in-glass thermometers in wooden Cotton-Region shelters with thermistor based maximum-minimum temperature systems MMTS housed in smaller plastic shelters. ❋ Unknown (2007)

The temperature sensor was a thermistor and the dew point sensor a Peltier effect thermoelectrically cooled mirror with an electronic feedback system which cooled the mirror undil dew formed on its surface. ❋ Unknown (2007)

Thermistors – I have just had a major nightmare with thermistor drift. ❋ Unknown (2007)

These are thermistor sensors, so in practice the error would be a constant offset from reading to reading, closing that 3 degree window down to +/- 1 degree. ❋ Unknown (2007)

In order to get less than .1 deg C Calculation error in an aircraft temp. meas. ckt. with a thermistor I had to resort to 32 bit arithmetic. ❋ Unknown (2007)

It all depends on how the instrumentation is set up, what kind of thermal mass is attached to thermistor and what kind of averaging, if any, is used by the detection circuitry. ❋ Unknown (2007)

A hybrid should be developed that uses a mechanical thermometer that is read electronically rather than a thermistor element that is subject to drift and noise. ❋ Unknown (2007)

When a thermometer is exposed to direct sunlight, the thermal measurement includes the heat energy conveyed to the instrument by conduction from the air mass plus the heat energy resulting from the direct absorption of solar energy by the glass and mercury instrument or thermistor. ❋ Unknown (2007)

The new system is thermistor-based with a “beehive like” instrument shelter, whereas the older systems consisted of liquid-in-glass thermometers, mounted inside a Cotton Region Shelter Stevenson Screen. ❋ Unknown (2007)

In other words every thermistor needs its own calibration if it is to be accurate .02 C is possible over wide ranges. ❋ Unknown (2007)

Is the temp sensor a glass thermometer or a thermistor? ❋ Unknown (2007)