Ambient Weather Fischer 4673-22 Bedienungsanleitung

Fischer 4673-22 Banjo Weather Station with Thermometer,

Hygrometer, Barometer User Manual

Table of Contents

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

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

3. Barometer Operation.......................................................................................................................2

3.1 How the aneroid barometer works................................................................................................2

3.2 Reading the barometer..................................................................................................................3

3.3 Absolute vs. Relative Pressure...............................................................................................3

3.4 Barometer Calibration............................................................................................................4

4. Hygrometer .....................................................................................................................................4

4.1 How the hygrometer works....................................................................................................4

4.2 Hygrometer Accuracy...................................................................................................................4

5. Warranty Information......................................................................................................................5

6. Liability Disclaimer ........................................................................................................................5

1. Introduction

Thank you for your purchase of the Fischer 4673-22 Banjo Weather Station with Thermometer,

Hygrometer, Barometer. The following is a guide for preparation, care and operation of your marine

weather instrument.

Note: Some of the images are generic and may not match your exact model.

2. Care and Cleaning

Avoid use of harsh household cleaners and coarse paper towels, which can 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.

3. Barometer Operation

Figure 1

Barometer Mechanism Case

Barometer calibration set screw

3.1 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 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. This model includes a

manually set gold needle which is used to mark the current measurement so a change can be seen. It

was invented by Blaise Pascal.

3.2 Reading the barometer

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

weather forecasting.

The weather forecast or pressure tendency is based on the rate of change of barometric pressure. In

general, when the pressure increases, the weather improves (sunny to partly cloudy) and when the

pressure decreases, the weather degrades (cloudy to rain).

The weather forecast is an estimation or generalization of weather changes in the next 24 to 48 hours,

and varies from location to location. The tendency is simply a tool for projecting weather conditions

and is never to be relied upon as an accurate method to predict the weather.

The barometer includes a manually set gold needle, which is used to mark the current measurement so

a change can be seen. Barometric readings should be taken daily. Remember that the rate of change

of barometric pressure is important in determining weather changes. You may want to take multiple

readings each day during periods of unstable weather conditions.

The following basic rule of thumb will hold true in using the barometer to predict weather conditions.

A fast rise in barometric pressure means good weather of short duration.

A rapid drop in barometric pressure means disturbances nearby, showers of short duration.

Regular elevation in barometric pressure usually will indicate a clear, dry weather conditions

(cold and dry in the winter).

A slow but continuous drop in barometric pressure will indicate persistent, bad weather.

Slow drops of 2-3 tenths mbar per 24 hours a depression of some distance away.

Drops of 1-2 tenths mbar per hour means disturbances nearby of short duration.

Steep drops of 6-10 tenths mbar within 4-5 hours period indicates coming rain and/or storm

with strong winds.

3.3 Absolute vs. Relative Pressure

To compare pressure conditions from one location to another, meteorologists correct pressure to

sea-level conditions. Because the air pressure decreases as you rise in altitude, the sea-level corrected

pressure (the pressure your location would be at if located at sea-level) is generally higher than your

measured pressure.

Thus, your absolute pressure (measured at your location) may read 28.62 inHg (969 mb) at an altitude

of 1000 feet (305 m), but the relative pressure (sea-level) is 30.00 inHg (1016 mb).

The standard sea-level pressure is 29.92 in Hg (1013 mb). This is the average sea-level pressure

around the world. Relative pressure measurements greater than 29.92 inHg (1013 mb) are

considered high pressure and relative pressure measurements less than 29.92 inHg are considered low

pressure.

3.4 Barometer Calibration

Your barometer can not be pre-calibrated at the factory for your altitude, so you must calibrate the

barometer for your specific location.

To determine the relative pressure for your location, locate an official reporting station near you (the

internet is the best source for real time barometer conditions, such as Weather.com or

Wunderground.com), and set your weather station to match the official reporting station.

Your barometer will operate from -100 to 3,000 feet with reliable accuracy. Aneroid barometers have a

small screw on the back for sea-level calibration (reference Figure 1, B).

With a flat blade screwdriver, turn this screw in either direction slightly while looking at the indicator

needle. Turn counter-clockwise (+) to increase the barometer and clockwise (-) to decrease the

barometer.

Continue this procedure until the proper pressure reading is obtained. Do not turn the screw

counter-clockwise (to the left) too far, since the screw can fall out. If the barometer needle exceeds

the measurement range, do not continue to turn the set screw. This is likely occurring because you live

outside the barometer operating range.

After the initial calibration, no further adjustment will be required unless the barometer is moved to a

new geographic location.

4. Hygrometer

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.

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. Warranty Information

Ambient, LLC provides a 5-year limited warranty on this product against manufacturing defects in

materials and workmanship.

This limited warranty begins on the original date of purchase, is valid only on products purchased and

only to the original purchaser of this product. To receive warranty service, the purchaser must contact

Ambient, LLC for problem determination and service procedures.

Warranty service can only be performed by a Ambient, LLC. The original dated bill of sale must be

presented upon request as proof of purchase toAmbient, LLC.

Your Ambient, LLC warranty covers all defects in material and workmanship with the following

specified exceptions: (1) damage caused by accident, unreasonable use or neglect (lack of reasonable

and necessary maintenance); (2) damage resulting from failure to follow instructions contained in your

owner’s manual; (3) damage resulting from the performance of repairs or alterations by someone other

than an authorized Ambient, LLC authorized service center; (4) units used for other than home use (5)

applications and uses that this product was not intended, such as outdoor use.

This warranty covers only actual defects within the product itself, and does not cover the cost of

installation or removal from a fixed installation, normal set-up or adjustments, claims based on

misrepresentation by the seller or performance variations resulting from installation-related

circumstances.

6. Liability Disclaimer

Reading the “User manual” is highly recommended. The manufacturer and supplier cannot accept any

responsibility for any incorrect readings and any consequences that occur should an inaccurate reading

take place.

The specifications of this product may change without prior notice.

This product is not a toy. Keep out of the reach of children.

No part of this manual may be reproduced without written authorization of the manufacturer.

Ambient, LLC WILL NOT ASSUME LIABILITY FOR INCIDENTAL, CONSEQUENTIAL,

PUNITIVE, OR OTHER SIMILAR DAMAGES ASSOCIATED WITH THE OPERATION OR

MALFUNCTION OF THIS PRODUCT.

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