Meter Description; Operating Instructions; Over-Range Indicator; Field Of View - Extech Instruments 42510 User Manual

Meter Description

1. Laser pointer beam
2. IR Sensor
3. Measurement trigger
4. Battery compartment cover
5. Handle grip
6. LCD Display
7. Function Buttons

Operating Instructions

1. Hold the meter by its Handle Grip and point it toward the surface to be measured.
2. Pull and hold the orange Trigger to turn the meter on and begin testing. The
temperature reading, the 'SCAN' icon, the emissivity icon (E=0.95), and the unit of
measure will appear. Note: Replace the battery if the display does not light.
3. While continuing to pull the Trigger:
a. Push the laser button
laser icon
beam approximately a half inch above the point of test (pressing the laser button
again turns the laser off).
b. Select the temperature units using the
c. Push the backlight button
4. Release the Trigger and the reading will hold for approximately 6 seconds (HOLD will
appear on the LCD) and then the meter will automatically shut off.

Over-range Indicator

If the temperature measurement exceeds 1000°F (538°C), the thermometer will display
dashes in place of a temperature reading.

Field of View

The meter's field of view is 8:1. For example, if the meter is 16 inches from the target
(spot), the diameter of the target must be at least 2 inches. Other distance ratios are
shown below in the field of view diagram.
Note that measurements should normally be made less than 2 feet from the target. The
meter can measure from further distances but the measurement may be affected by
external sources of light. In addition, the spot size may be so large that it encompasses
surface areas not intended to be measured.
to turn on the laser pointer. When the laser is ON the
will appear on the LCD over the temperature reading. Aim the red
to turn on the LCD backlighting function.
Diameter of Spot
1"
0.5"
4"
8"
Distance to Object
1
2
3
4
o o
C or F button.
4"
2"
16"
32"
3 Model 42510 Version 3.3 March 2006
Laser Beam
0.63"
Sensor Beam
6
7
5