My room humidity is 55%-60%Originally Posted by kitedemon
There are a lot of misunderstanding with humidity. High humidity is always an issues as long as there is correct ventilation.
What is the humidity in the room? it is difficult to get below thing as it means reducing the air as it enters the enclosure. very difficult. Usually this problem isn't actually an issue it is when you have high humidity far above the rooms norm that issues can develop (poor ventilation sign) not always but often. The sick building or petri dish syndrome.
Accuracy of many hygrometers is suspect. Many very poor analogue ones have paper face cards which can swell and hinder the movement. Digital ones are very very sensitive to dirt and dust on the resistor sensor (they work by measuring the micro resistance of wet air against dry air.) Any dust will through them off a hard knock can as well. Anything that changes the tiny resistance will change the reading. They are only reliable for a few months then start to read incorrectly. Some (accurite for example) have a HUGE range of accuracy out of the box I have been told 10% up or down from correct (the worst I have ever seen specs for) that means readings of 60% could actually be as low as 50% or as high as 70% and be working correctly according to the manufacturer. This indicates the manufacturer know the production line is inconsistent.
The best solution I have is easy but a good quality analogue that can easily be re calibrated and is tolerant of dirt and dust. (I have fished them out of water bowls and dried them to find they were still spot on.)
Things to look for:
METAL face card,
calibration screw
metal housing
*make sure is is not a hair tension types they are very very fragile*
Ones like this,
http://www.amazon.com/Brass-Hygromet...gue+hygrometer
Salt tests can calibrate one digitals you need to buy a test kit (about 8$ per hygrometer, per test) I check mine every 6-8 months although every year is likely ok.
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