Topic: The Reliability of the SHT-31 Humidity Sensor & What Psychrometer Should I Buy?

[jgentry]

After the last two days of rain, rare, heavy fog enveloped southern AZ last night. Didn't quite get to W0X0F (at least while I was awake), but very close. My SHT31 refused to get closer than 0.1F in temp/dew spread, resulting in 99% humidity for almost seven hours til 10 this morning. Not stating anything new, just wish it would pull that 100% trigger. This sensor is about two years old. Anyone getting consistent 100% out of newer ones?

With the WeatherFlow Tempest SHT-31, I hit 100% easily. With the Davis, naw. But I haven’t used a brand new sensor. The last time I’ve texted Ryan, he told me Davis hasn’t changed anything so the new ones would probably perform about the same.

[CW2274]

Harrumph. That's what I figured. Thanks. 

[drew1021]

Mine did but only for a short period after I installed new. Now 97% is the highest I’ve seen it since. Sensor is about a year old

[Mapantz]

The SHT31-7346-070 has been bang on for me.

Now we've hit the damper end of the year, it will go to 100%. November several times, and December. Quite a few 99% days too.