Ambient Weather WS-M0921THB Manuale d'uso - Pagina 4

Sfoglia online o scarica il pdf Manuale d'uso per Stazione meteorologica Ambient Weather WS-M0921THB. Ambient Weather WS-M0921THB 5. Brushed aluminum contemporary weather station

Stampa la pagina

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.

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.

5.4 Barometer Calibration

Your barometer will operate from -100 to 7,000 feet with reliable accuracy. Aneroid barometers have a

small screw on the back for sea-level calibration. With a flat blade screwdriver, turn this screw in

either direction slightly while looking at the indicator needle. It should move in one direction or the

other. Tap the barometer to see where the needle settles. 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. After the initial calibration, no further adjustment will be required unless the

barometer is moved to a new geographic location.

6. Dial Thermometer

The dial thermometer uses a bimetallic strip wrapped into a coil. One end of the coil is fixed 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 different metals expand at different rates as they warm up. By

bonding two different 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.

7. Installation

To install the traditional weather station, hang the plaque on a wall with the hole built into the plaque.

Only install indoors, in a clean area.

8. Measurement Specifications

The following table provides specifications for the measured parameters.

Measurement

Indoor Temperature

Indoor Humidity

Barometric Pressure

9. Warranty Information

Ambient, LLC provides a 1-year limited warranty on this product against manufacturing defects in

Version 1.0

Range

0 to 120 °F

0 to 100 %

940 hPa to 1070 hPa

(about -100 to 7,000')

Accuracy

± 3.6 °F

20% – 45%: ± 9%

45% – 75%: ± 6%

75% – 98%: ± 9%

1060hPa – 1030hPa: ± 10hPa

1030hPa – 990hPa: ± 5hPa

990hPa – 960hPa: ± 10hPa

Resolution

10 °F

10 %

1 hPa

Page 4