Digital Thermometer + Hydrometer is one device ,that combines measurement temperature and humidity.All results showing on his digital display.
In one meter lenght probe are placed two sensors : for temperature and for humidity.
First imporant thing is sensors accuracy. I make one litle test accuracy , i compare this digital termometer- hygrometer with testotherm wich i use in work. Testotherm is high tech cost expensive with ultra high accuracy for themperature and humidity i use one two testoterm in my laboratory. Testotherm is calibrated in the laboratory every year for certficate.
What are the results of the test ?
Results see in picture:
Testotherm showing 26.6°c for temperature and 35.4% for humidity
Digital thermometer – hygrometer showing similar results
… for temperature and .. for humidity
These results were measured after 10 minutes of stabilization.
I repeated the test 3 times always the result was the same
My verdict is that the thermometer hygrometer relative to price is a usefull thing.
It is very accurate and fairly quickly stabilizes
Where do I buy this combined digital humiditymeter with thermometer ?
I bought it on ebay and the price was around $3.24 USD + free shipoing is good price for this thing.It also for sale on DX but the price is 6.5 usd .
Digital Hygrometer-Thermometer description and specification:
Temperature Range: -50°c ~ 70°c (-58°F~ +158°F )
Measuring Humidity Range: 10% RH ~ 99% RH
Humidity Accuracy:5%
Humidity Display Resolution: 1% RH
Temperature Accuracy: 1°C
Operating Voltage: 1.5v, or LR44 batteries(Include)
Sampling Period: 10S
Dimension: 48 x 28.5 x 15.2mm
LCD Dimension: 40 x 22.5mm
Installation dimensions:46 x 27 x 13.5mm
Net Weight: 45g
Package weight: 53g
Color: White or Black
Package Content:
1 x Digital Thermometer Hygrometer
2 x LR44 batteries(1 pair)
Battery installation:
- Lift the stand at the back of the unit
- Slidingly open the battery cover as per the arrow indication
- Slightly Inset one or two button cells into the battery housing(note the polarity)
- Close the battery cover.
- Two button battery LR44 Two battery packed in PE bag seperately
Digital Thermometer Hygrometer is usefull thing for for the measuring the outdoor / internal temperature.This hygrometer has a probe,which can test some places humidity exactly. It was used widely.It is very usefull to the hatchery.
Attachment
Hi Ivan, thank you for this super post information on the hygrometer thermometer, I bought 2 parts, one with probe like your that works perfectly, second cheap but does not have a probe, it does not work permanently, The display shows (– — –), no luck. Thank you for your product description beautiful explanation, thank you.
Hm … Did you try to compress him? ( by hand ) .. or bad LR44 battery
Thank you for the info, actually after pressing by hand, he indicated figures, I changed the batteries and it works, I hope its hard in time, thank you Ivan, very nice.
🙂 my little hack .. i give one to test in calibration laboratory and this 3usd device hat very good accuracy .. hmm..