MAL-250
User’s Manual
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Product Datasheet
Product description
1.Vane Impeller
2.Temperature & Humidity Sensors
3.LCD with White Backlight
4.Unit Button
5.Power Button
6.Set Button
7.Battery Cover
8.Lanyard Attachment Point
How to operate:
3. Units Switch Function
In any measurement mode quickly press the Units Button to change
the measurement units displayed. i.e.
o
C or
o
F units display.
4. Hold Function
Press the Units Button over 2 seconds to freeze current readings dis-
played.
Press this button over 2 seconds again to exit this mode.
**NOTE: In Altitude Mode press Units Button for over 2 seconds
switch to Relative Altitude Mode (See Mode 8). There is not hold
function in the Altitude Mode**
5. Switching Operating Modes
Press Set button to change the required mode.
6. Backlight function
Press Set button over 2 seconds to turn on/off the backlight.
7. Beaufort scale
The Beaufort scale is always displayed according to current wind
speed in all modes
How to operate:
Operating mode introduction
1. Turning On and Off your Meter
a. Press the Power Button for over 2 seconds to turn on
your meter. After 10 minutes without any operation the
meter will power off.
b. To override the Auto Power Off hold down the Set
Button then press the Power Button to turn on. You will
see the Power Symbol appear on the LCD. Warning, the
meter will stay on until the battery runs out unless you turn
off by holding down the Power Button.
2. Max/Min/Avg Value Measurement Function
In any measurement mode quickly press the Power Button
to choose Maximum Reading, a second press will display
the Minimum Reading, a third press will display the Average
reading and a forth press will return the meter to the stand-
ard current readings.
Max: When is this mode the meter will display the maxi-
mum value reached
Min: When is this mode the meter will display the mini-
mum value reached
AVG: When is this mode the meter will display the average
value reached
*Once the meter is switched on it will start to record the
Max/Min/Avg values*
Press SET Button to change the display modes:
Wind Speed -> Wind Chill ->Temperature ->Relative Humidity -> Heat
Index -> Dew Point -> Barometric Pressure -> Pressure Altitude
Mode 1: Wind speed
1. Wind Speed Units: m/s, ft/min, knots, km/h, mph
2. Max/Min/Avg Wind Speed Reading Display
3. Hold Current Wind Speed Reading
4. Beaufort Scale
5. Wind Speed Readout
Mode 2: Wind chill
Wind chill means the effect that air temperature combined with wind
speed has on human skin or an object.
1. Wind Chill Units:
o
C or
o
F
2. Max/Min/Avg wind chill reading display
3. Hold Current Wind Chill Reading
4. Beaufort Scale
5. Wind Chill Readout
