JDC Electronic SA Skywatch Xplorer - Manual (Page 20)

20
4. Mode for measuring the instant wind speed with ambient temperature Xplorer 2 – 3 – 4
Choice of unit of measurement :
By keeping the button pressed down for at least 2 seconds the 2 units start to go past. You have the possibility to
choose between : °C (degrees Celsius) and °F (degrees Fahrenheit) When the unit of your choice appears, release
the button and the unit of measurement is thereby selected.
Measuring ambient temperature :
Note : the temperature sensor is integrated with the metal back of the casing, and therefore it is the temperature of
the back of the casing which is displayed. This special feature makes it possible to measure very accurately the
temperature of milieu such as :
water (springs, streams, etc.) by immersing the instrument several centimetres;
surfaces (ground, metal parts, refrigerator interiors etc) by laying as closely as possible the back of the instrument on the surface to be
measured;
ambient air, either by allowing the instrument to reach the air temperature, which can take several minutes, or even several dozens of
minutes according to the wind speed (avoid direct sun rays and contact of the back of the casing with your fingers). Otherwise, to get a
rapid and precise measurement, but the back of the casing into contact with an object which is the same temperature as the air (vehicle
bodywork, metal barrier, smooth walls etc.) avoiding surfaces in dark colours and exposed to sunlight).
Measuring range of the sensor : from -50°C to100°C
Measuring cycle: one measurement every 0.5 seconds
Display:
The display of the instant wind speed is done on the large digits while the ambient temperature is displayed on the small digits.
Resolution (temperature) : to the tenth of a degree