PeakTech 4975 Handbuch Seite 7

5.6. Beschreibung des Infrarotstrahls
®
PeakTech 4975:
®
PeakTech 4980:
D = Entfernungsfaktor (Strahlausleuchtfläche in
Abhängigkeit von der Entfernung) ca. 12:1 / 20:1
S = IR-Strahldurchmesser
1 In = 2,5 cm
2 In = 5 cm
4 In = 10 cm
6 In = 15 cm
12 In = 30 cm
24 In = 60 cm
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This is a result of the cooling process which must take place for the
IR sensor.
5. Non-Contact IR Measurement Operation
5.1. Power ON/OFF
1. Press the ON/HOLD key to take a reading. Read the measured
temperature on the LCD.
2. The meter powers OFF automatically approximately 7 seconds
after the ON/HOLD key is released.
5.2. Selecting Temperature units
Select the required temperature unit by opening the battery
compartement (see point 7) and switchover the slide-switch, which is
installed.
°C is selected by manufacturer.
5.3. Data Hold
This meter automatically holds the last temperature reading on the
LCD for 7 seconds after the ON/HOLD key is released.
No extra key presses are necessary to freeze the displayed reading.
5.4. Backlite LCD
Select backlite by first pressing the ON/HOLD key and then pressing
the BACKLITE (5) key. Press the backlight key again to turn the
backlight OFF.
5.5. Laser Pointer
1. To turn the laser pointer ON, press the LASER (4) key after
pressing the ON/HOLD key
2. Press the Laser key again to turn OFF the laser.
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