Ambient Weather WS-HT350 Benutzerhandbuch - Seite 3
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4.3 Min and Max Mode
Press the MAX / MIN button once to enter the Min and Max Mode. The maximum humidity and
temperature values will be shown since the last reset. The MAX icon will be displayed at the top of
the display. Press the MAX / MIN button again to enter the min mode. The minimum humidity and
temperature values will be shown since the last reset. The MIN icon will be displayed at the top of
the display.
To exit the Min and Max Mode, press the MAX / MIN button for two seconds.
4.4 °F, °C, Dew Point, Wet Bulb Mode
When powered up for the first time, the display will default displaying Humidity in the top portion of
the display and temperature in °F in the bottom portion of the display. Press the °F->°C->WBT->Dew
Point button to switch between temperature (°F), temperature (°C), Dew Point (°C), Dew Point (°F),
Wet Bulb Temperature (°C) and Wet Bulb Temperature (°F). Press the button again to return to
temperature (°F).
4.5 Backlight and Hold
The hold feature allows you to measure duct or other air flow sources while you are not in a position
to view the display. Press the Hold / Backlight button to hold the last measured value. Press the
Hold / Backlight button again to return to normal mode.
To turn on the backlight, press and hold the Hold / Backlight button. To turn off the backlight, press
and Hold the Hold / Backlight button.
5. Glossary of Terms
Term
Accuracy
Dew Point
Hygrometer
Range
Wet Bulb Temperature
Version 1.0
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Accuracy is defined as the ability of a measurement to match the actual
value of the quantity being measured.
Dew Point is the temperature at which a given parcel of humid air must
be cooled, at constant barometric pressure, for water vapor to condense
into water. The condensed water is called dew. The dew point is a
saturation temperature.
A hygrometer is a device that measures relative humidity. Relative
humidity is a term used to describe the amount or percentage of water
vapor that exists in air.
Range is defined as the amount or extent a value can be measured.
Wet Bulb Temperature reflects the physical properties of a system with
a mixture of a gas and a vapor, usually air and water vapor. Wet bulb
temperature is the lowest temperature that can be reached by the
evaporation of water only. It is the temperature one feels when one's
skin is wet and is exposed to moving air.
Definition
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