Ralph
Well-Known Member
I tested all three of my Govee sensors this weekend as I typically do every few months and my findings were really frustrating.
My first calibration was with a 69% Boveda pouch in an airtight container. After calibrating my sensors to 69% I found two to be less than 1% low and the third (a puck) was almost 20% low. This is how they have read since I bought them a few years ago.
Just out of curiosity, I put all three in my Aristocrat reading 69% and after 48+ hours saw them read 66.1%, 68.6% 73.2%, all sitting right next to each other. The lowest was calibrated at -16.9% to match the one at 68.6% which was 0.1% off. I've had people tell me you can’t calibrate them that much so I attached a screenshot. My target humidity level for the Aristocrat at 68%.
I decided to try a second calibration this time with a salt test. All three went into the container with the same readings (68.6%) and after a couple of days I again saw a wide range of readings. Today the sensor below started sending crazy readings every 10-15 seconds with huge temperature swings of 50+ degrees in my 67 degree living room. I changed the batteries and the screen subsequently went crazy as you can see in the pic, and it hasn’t sent any data since, even though connected to Bluetooth and WiFi. I deleted the device and reconnected it with no help. This particular sensor was reading closest to 0% before it went nuts.
I use engineered crystals in the two desktops and a HumiCare EH+ in the aristocrat and have been happy with how they consistently maintain humidity for the long haul, the sensors help to alert me when I need to add water. I just can’t find anything consistently accurate. I’ve tried the Cigar Oasis Caliber and they are junk too. I love having the info in an app at my fingertips so I wonder if SensorPush is the answer at twice the price.
My first calibration was with a 69% Boveda pouch in an airtight container. After calibrating my sensors to 69% I found two to be less than 1% low and the third (a puck) was almost 20% low. This is how they have read since I bought them a few years ago.
Just out of curiosity, I put all three in my Aristocrat reading 69% and after 48+ hours saw them read 66.1%, 68.6% 73.2%, all sitting right next to each other. The lowest was calibrated at -16.9% to match the one at 68.6% which was 0.1% off. I've had people tell me you can’t calibrate them that much so I attached a screenshot. My target humidity level for the Aristocrat at 68%.
I decided to try a second calibration this time with a salt test. All three went into the container with the same readings (68.6%) and after a couple of days I again saw a wide range of readings. Today the sensor below started sending crazy readings every 10-15 seconds with huge temperature swings of 50+ degrees in my 67 degree living room. I changed the batteries and the screen subsequently went crazy as you can see in the pic, and it hasn’t sent any data since, even though connected to Bluetooth and WiFi. I deleted the device and reconnected it with no help. This particular sensor was reading closest to 0% before it went nuts.
I use engineered crystals in the two desktops and a HumiCare EH+ in the aristocrat and have been happy with how they consistently maintain humidity for the long haul, the sensors help to alert me when I need to add water. I just can’t find anything consistently accurate. I’ve tried the Cigar Oasis Caliber and they are junk too. I love having the info in an app at my fingertips so I wonder if SensorPush is the answer at twice the price.
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) is that almost all sensors in the lower price range, be they RH, temperature, weight scales, even volt ohm meters, etc. are typically VERY accurate with relative measurements, but poor in absolute value. Meaning, if your RH sensor says 65.5 then goes to 66.5, you can be quite sure it went up a point, but the real absolute value of the RH is the question mark. Which is why calibration is critical for usefulness in these types of things. Now, if the cal floats all over the map, that's a different problem and points to a shitty sensor.
