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Ambient Weather WS-YG302A-Y Cherry Finish Cream

Dial Traditional Weather Station User Manual

Table of Contents

1. Introduction .................................................................................................................................... 2

2. Preparation ...................................................................................................................................... 2

3. Care and Cleaning .......................................................................................................................... 2

4. Hygrometer (Humidity Meter) ....................................................................................................... 3

4.1 How the hygrometer works .................................................................................................... 3

4.2 Hygrometer Accuracy ............................................................................................................. 3

5. Aneroid Barometer ......................................................................................................................... 3

5.1 How the aneroid barometer works ......................................................................................... 3

5.2 ading the barometer Re ............................................................................................................ 3

5.3 Absolute vs. Relative Pressure ...................................................................................................... 4

5.4 Barometer Calibration ............................................................................................................ 4

6. Dial Thermometer .......................................................................................................................... 5

7. Installation ...................................................................................................................................... 5

8. Measurement Specifications ........................................................................................................... 5

9. Troubleshooting Guide ................................................................................................................... 6

10. Liability Disclaimer ........................................................................................................................ 8

11. Warranty Information ..................................................................................................................... 9

12. California Prop 65 .......................................................................................................................... 9

1. Introduction

Thank you for your purchase of the Ambient Weather -YG302A-Y Cherry Finish Brass Dial WS

Traditional Weather Station. The following is a guide for preparation, care and operation of your

traditional weather station.

Figure 1

Note: Barometric pressure readings, under normal conditions, only fluctuate between 1-1.25 inHg per

day. Not to be confused with +/- 1-1.25. So, the needle may never actually reach either forecast icon.

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.

For accurate barometric pressure readings, please see Section 5.4 below Barometer Calibration.

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.

4.2 Hygrometer Accuracy

Humidity measurement is among the more difficult problems in basic meteorology. Accuracy is difficult

to achieve and are subject to drift, so need regular recalibration.

A further difficulty 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. Aneroid Barometer

5.1 How the aneroid barometer works

An aneroid barometer uses a small, flexible metal box called an aneroid cell. This aneroid capsule (cell)

is made from an alloy of beryllium and copper. The evacuated capsule (or usually more capsules) is

prevented from collapsing by a strong spring. Small changes in external air pressure cause the cell to

expand or contract. This expansion and contraction drives mechanical levers such that the tiny

movements of the capsule are amplified and displayed on the face of the aneroid barometer. Many

models include a manually set needle which is used to mark the current measurement so a change can

be seen. It was invented by Blaise Pascal.

5.2 Reading the barometer

It is highly advisable to lightly tap the glass near the center brass knob with your fingers before taking

a barometer reading. The light tap will overcome any friction that may affect accurate hand readings,

especially during periods of slow atmospheric changes. The Coast Guard has informed us that tapping

the barometer is even required on the most expensive aneroid barometers, because the mechanism is

made deliberately “stiff”.

The ability if the barometer to indicate changes in barometric pressure makes it a useful instrument in

weather forecasting.

Product specificaties

Merk:	Ambient Weather
Categorie:	Niet gecategoriseerd
Model:	WS-YG302A-Y

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