Once upon a time, we could buy a red liquid thermometer for a few bucks that was within half a degree or so. Usually Taylor. Went into HD. 5 same model, off by several degrees. No better in Walmart. Look on Amazon, It seems a simple glass tube can't even get a five star rating. Digital? not even close. How can the screw up over 25% of these things? ( Sure, happy customers don;t tend to report, but Gezzz)
Do I know what close is? Yes, I have a calibrated sling psychrometer. Both bulbs when dry read dead on the same. I have one OLD Taylor red fluid, and it reads as close as I can interpolate. Digitals? Sent FOUR back to Amazon in the last couple of years. Hygrometer? Only if +/- 20% is good enough. Garbage, even the expensive "Swiss sensors" brand. I try to keep tabs as the mini-split runs too warm to dehumidify and the cheap portables ( on my third one) fail so often and their built-in humidistat is usually wrong by 10% or more. My current one in auto mode reads 33% when the actual humidity is 55. But in manual mode, it does still run. As the coils run about 42, that is below dew point. Mini-Split runs over 50-52, above dew point. ( well close. DP for 72 degrees target of 55% is 50 degrees) Mini split Mitsubshi remote control thermometer reads 10 degrees high. At least the unit just adjusts up or down a notch and does not care what the remote displays.
Going through the remote monitoring game again as my craw space dehumidifier failed AGAIN. ( twice in 3 years and it was a $1200 unit)
Do I know what close is? Yes, I have a calibrated sling psychrometer. Both bulbs when dry read dead on the same. I have one OLD Taylor red fluid, and it reads as close as I can interpolate. Digitals? Sent FOUR back to Amazon in the last couple of years. Hygrometer? Only if +/- 20% is good enough. Garbage, even the expensive "Swiss sensors" brand. I try to keep tabs as the mini-split runs too warm to dehumidify and the cheap portables ( on my third one) fail so often and their built-in humidistat is usually wrong by 10% or more. My current one in auto mode reads 33% when the actual humidity is 55. But in manual mode, it does still run. As the coils run about 42, that is below dew point. Mini-Split runs over 50-52, above dew point. ( well close. DP for 72 degrees target of 55% is 50 degrees) Mini split Mitsubshi remote control thermometer reads 10 degrees high. At least the unit just adjusts up or down a notch and does not care what the remote displays.
Going through the remote monitoring game again as my craw space dehumidifier failed AGAIN. ( twice in 3 years and it was a $1200 unit)
