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1. Introduction
Thank you for your purchase of the Ambient Weather WS-M201301THB Cherry Finish Gold Dial
Open Face Barometer with Temperature and Humidity. The following is a guide for preparation, care
and operation of your traditional weather station.
2. Preparation
Your weather instrument includes a protective pad to prevent damage to the barometer glass case
during shipment. Remove this protective pad and circular instruction sheet. The barometer is ready
to use.
Your barometer must be calibrated to the local relative pressure before use. Please reference Section
5.4.
3. Care and Cleaning
The solid wood case is finished with a clear, satin lacquer to protect and preserve the appearance.
Although occasional use of a good furniture polish is acceptable, we recommend periodic cleaning
with a very lightly water dampened soft cloth. Be sure to wipe the wood dry with a soft cloth before
cleaning.
Avoid use of harsh household cleaners and coarse paper towels, which can damage the lacquer coating
or scratch the bezel or lens. Fingerprints and dirt may be removed the lenses and bezels with a soft
cloth lightly dampened with a mixture of water and mild dishwashing liquid. Be sure to dry the lens
and bezel with a soft cloth after cleaning.
Do not install the weather station outside. The weather station is intended for indoor use only.
4. Hygrometer (Humidity Meter)
4.1 How the hygrometer works
The hygrometer measures the indoor relative humidity. The sensor measures the air moisture by a
sensitive mechanical coil spring that is bonded with a moisture absorbent material.
Hygrometers register the percentage of water vapor present in the air, compared to the maximum
amount that can be present at a given temperature.
The coils in hygrometers respond slowly and while humidity levels change abruptly, it can take an
hour or more for the meter to reach an accurate reading. Remember that the hygrometer is reading
indoor humidity, and is vastly different than outdoor humidity, as reported by the National Weather
Service.
It is not uncommon to have low humidity reading during cold weather when indoor air is heater. Air
conditioning also removes moisture from the air. The optimum levels are 45% to 50% during
heating and cooling seasons. Low humidity can cause health problems and can be hard on wood
furnishings. High humidity can cause mold or mildew to grow.
Version 1.0
©Copyright 2015, Ambient LLC. All Rights Reserved.
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