Ambient Weather WS-YG720 Bruksanvisning
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WS-YG720
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Version 1.0 ©Copyright 2010, Ambient LLC. All Rights Reserved. Page 1
Ambient Weather WS-YG720 Thermometer, Liquid
Barometer, Hygrometer and Clock Weather Station
Table of Contents
1. Introduction ..................................................................................................................................... 2
2. Preparation ...................................................................................................................................... 2
3. Care and Cleaning ........................................................................................................................... 2
4. Hygrometer (Humidity Meter) ........................................................................................................ 2
4.1 How the hygrometer works .................................................................................................... 2
4.2 Hygrometer Accuracy ............................................................................................................. 3
5. Dial Thermometer ........................................................................................................................... 3
6. Storm Glass Barometer ................................................................................................................... 3
6.1 How the storm glass works 3 ....................................................................................................
6.2 Filling the storm glass ............................................................................................................ 4
6.3 Emptying the storm glass ....................................................................................................... 4
6.4 Final Installation and Drip Cup .............................................................................................. 4
7. Quartz Clock ................................................................................................................................... 5
8. Measurement Specications ........................................................................................................... 5
9. Warranty Information ...................................................................................................................... 5
Version 1.0 ©Copyright 2010, Ambient LLC. All Rights Reserved. Page 2
1. Introduction
Thank you for your purchase of the Ambient Weather -YG720 Thermometer, Liquid Barometer, WS
Hygrometer and Clock Weather Station. The following is a guide for preparation, care and operation
of your traditional weather station.
2. Preparation
You will need food coloring to color the water in the storm glass. Any color is ne, based on personal
taste.
3. Care and 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 dierent 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
Version 1.0 ©Copyright 2010, Ambient LLC. All Rights Reserved. Page 3
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.
4.2 Hygrometer Accuracy
Humidity measurement is among the more dicult problems in basic meteorology. Accuracy is
dicult to achieve and are subject to drift, so need regular recalibration.
A further difculty is that most hygrometers sense relative humidity rather than the absolute amount
of water present, but relative humidity is a function of both temperature and absolute moisture content,
so small temperature variations within the air in a test chamber will translate into relative humidity
variations.
5. Dial Thermometer
The dial thermometer uses a bimetallic strip wrapped into a coil. One end of the coil is xed to the
housing of the device and the other drives an indicating needle. The principle behind a bimetallic strip
thermometer relies on the fact that dierent metals expand at dierent rates as they warm up By .
bonding two dierent metals together, the coil bends, causing the needle to move. Bimetallic
thermometers are not as accurate as bulb (mercury or red spirit) thermometers. The dial thermometer
should require no calibration.
6. Storm Glass Barometer
6.1 How the storm glass works
The concept that 'decreasing atmospheric pressure predicts stormy weather' was postulated by Lucien
Vidie - and it's the basis for a weather prediction device called a storm glass or liquid barometer. It
consists of a glass container with a sealed body, half lled with water.
A narrow spout connects to the body below the water level and rises above the water level, where it is
open to the atmosphere. When the air pressure is lower than it was at the time the body was sealed, the
water level in the spout will rise above the water level in the body and when the air pressure is higher,
the water level in the spout will drop below the water level in the body.
Produktspecifikationer
| Varumärke: | Ambient Weather |
| Kategori: | ej kategoriserat |
| Modell: | WS-YG720 |
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