Hygrometer Recommendations

[pawlowski6132]

I wish I knew the humidity level was in my house/room.

I have a few digital hygrometer's I've bought (actually about 6) and they're all different with a range of +/- 12% of each other.

If you have one you have confidence in, can you recommend it and let me know why you think it's accurate? How do you know?

[wintermoon]

[va3ux]

I wish I knew the humidity level was in my house/room.

I have a few digital hygrometer's I've bought (actually about 6) and they're all different with a range of +/- 12% of each other.

If you have one you have confidence in, can you recommend it and let me know why you think it's accurate? How do you know?

I use the Accurite 01083M because it can be calibrated and it holds its calibration fairly well. I actually have 3 of them. Calibrate using the damp salt method (Google it), which gives you a 75% RH calibration point. I also have a lab grade sling psychrometer that I use to check the accuracy of the Accurite at typical house humidity levels (say 40 - 50% RH) after calibrating at 75% RH, and the Accurite is fairly close. Real accurate measurement of RH is usually not attainable with these inexpensive units but the Accurite does surprisingly well. Also, don't expect 2 or more different meters to read the same. If they are within about 5 percentage points of each other, that's about all you can expect. Definitely get one that can be calibrated, otherwise you just get a number on the display and you have no idea how accurate or inaccurate it is.

[garybaldy]

Does one need to consider RH in the UK? Thanks

[va3ux]

The issues I see with the Thermpro are :

1. No calibration available
2. The manufacturer does not specify accuracy for the RH. ( The Accurite accuracy is specified as +/- 2% )

Neither of these absolutely mean that the Thermpro RH reading is inaccurate, but there are no claims being made at all as to the accuracy. That means you will get a number on the display, but the actual RH could be 10-15% away from the displayed number and the unit is still operating within specifications.

[wintermoon]

The issues I see with the Thermpro are :

1. No calibration available
2. The manufacturer does not specify accuracy for the RH. ( The Accurite accuracy is specified as +/- 2% )

Neither of these absolutely mean that the Thermpro RH reading is inaccurate, but there are no claims being made at all as to the accuracy. That means you will get a number on the display, but the actual RH could be 10-15% away from the displayed number and the unit is still operating within specifications.

I have a couple high end hygrometers in addition to the Thermopro's and find they're all within a percent or two of each other.

[JohnoL]

So what is a good humidity level for an acoustic guitar?

[wintermoon]

So what is a good humidity level for an acoustic guitar?

40-50% is the normal suggested range but I keep them closer to 40%-45%
Electrics need humidity as well if only to prevent fret sprout, though not quite as critical.