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Description
The Abbeon Dial Hygrometer is certified to be accurate within ±3% RH. The dial indicates the complete range of 0 to 100% relative humidity. This instrument has been tested at three different positions of the dial at temperatures ranging from 32° to 230°F.
How it Works
An internal RH sensor (man-made fiber) element expands as humidity increases and contracts as humidity decreases. This expansion and contraction is mechanically linked through precision bearings and gears to the humidity pointer. No batteries or external power supplies are needed. The unit is completely self-contained. A calibration screw is accessible through a slot in the case for periodic calibration to a known humidity standard.
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