42545A-en-GB_V4.5 1/16
3
Operating Instructions
Basic IR Measurements
1. Hold the meter by its handle and point it toward the surface to be measured.
2. Pull and hold the trigger to turn the meter on and begin testing. The temperature reading, the
flashing ‘SCAN’ icon, the emissivity, and the unit of measure will appear. Note: Replace the 9V
battery if the display does not switch on.
3. Release the Trigger and the reading will hold for approximately 7 seconds (HOLD will appear on
the LCD) after which the meter will automatically shut off. The only exception to this is if the
TEST LOCK switch is set to ON.
Note
: Select the temperature units (ºF/ºC) using the top switch inside the battery compartment
Backlight/Laser Pointer
1. While pulling the Trigger, push the backlight/laser button once to turn on the backlight.
2. Press it again to turn on the laser pointer. When the laser is ON the laser icon will appear in
the LCD.
3. Press the laser button to turn the backlight off.
4. Pressing it again turns the laser off.
Note
: Backlight and Laser settings will be retained after the meter powers down.
Over-range Indication
If the temperature measurement exceeds the specified temperature range, the thermometer will
display dashes in place of a temperature reading.
High and Low Alarm Feature
The Model 42545 has an alarm feature whereas a High Alarm setting and a Low Alarm setting can
be programmed by the user. When either Alarm point is reached the meter will alert the user via an
audible beep and LCD display icon. Follow the steps below:
1.
Press the MODE button until the HAL (High Alarm) parameter is displayed. Use the UP and
DOWN arrow keys to set the desired High Alarm temperature setting.
2.
Press the MODE button until the LAL (Low Alarm) parameter is displayed. Use the UP and
DOWN arrow keys to set the desired Low Alarm temperature setting.
3.
When an alarm limit is reached, the audible alarm will sound and the display icon HIGH or
LOW will appear on the LCD.
4.
Note that if the bottom switch (located in the battery compartment) is set to OFF, the audible
alarm will be disabled.
