User’s Manual
High Temperature InfraRed Thermometer
with Laser Pointer
MODEL 42530
Introduction
Congratulations on your purchase of the Model 42530 IR Thermometer. This thermometer
makes non-contact (infrared) temperature measurements at the touch of a button. The
built-in laser pointer increases target accuracy while the backlit LCD and handy pushbuttons combine for convenient, ergonomic operation. Proper use and care of this meter
will provide years of reliable service.
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Safety
Use extreme caution when the laser pointer beam is on
Do not point the beam toward anyone's eye or allow
the beam to strike the eye from a reflective surface
Do not use the laser near explosive gases or in other
potentially explosive areas
Specifications
Infrared Thermometer Specifications
Range / Resolution -50 to 538oC (-58 to 1000oF) 0.1°C/F<200 / 1oC/F> 200
Accuracy ± 2% of reading or ± 2oC (4oF) whichever is greater.
Note: Accuracy is specified for the following ambient
temperature range: 18 to 28°C (64 to 82°F)
Emissivity 0.95 fixed value
Field of View D/S = Approx. 8:1 ratio (D = distance, S = spot)
Laser power Less than 1mW
Spectral response
General Specifications
Display
Display rate 1 second approx.
Operating Temperature 0°C to 50°C (32°F to 122°F)
Operating Humidity Max. 80% RH
Power Supply 9V battery
Automatic Power Off Meter shuts off automatically after 7 seconds
Weight 180g / 6.35 oz.
Size 211 x 89 x 38mm (8.3 x 3.5 x 1.5”)
6 to 14 m (wavelength)
3½ digit backlit LCD display with function indicators
Model 42530-EU V2.4 5/09
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Meter Description
1. LCD Display
2. Function Buttons
3. Handle Grip
4. Laser Pointer
5. IR Sensor
6. Measurement Trigger
7. Battery Compartment
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Operating Instructions
1. Hold the meter by its Handle Grip and point it toward the surface to be measured.
2. Pull and hold the red Trigger to turn the meter on and begin testing. The display
will light if the battery is good. Replace the battery if the display does not light.
3. While measuring, the SCAN display icon will appear in the upper left hand corner
of the LCD.
4. While continuing to pull the Trigger:
a. Push the red Laser button to turn on the laser pointer. When the laser is on the
laser icon will appear on the LCD over the temperature. Aim the red beam
approximately a half inch above the point of test (pressing the Laser button
again turns the laser off).
b. Select the temperature units (oC oroF) using the blueoC andoF buttons.
c. Push the yellow Backlight key to turn on the LCD backlighting function.
5. Release the Trigger and the HOLD display icon will appear on the LCD indicating
that the reading is being held.
6. The meter will automatically power down after approximately 7 seconds after the
trigger is released.
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Overrange Indicator
If the temperature being measured exceeds 538°C (1000°F), the thermometer will emit an
audible warning and the OVER icon will be displayed on the LCD.
Model 42530-EU V2.4 5/09
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Field of View
Distance to Object
The meter’s field of view is 8:1, meaning that if the meter is 20.3cm from the target, the
diameter of the object under test must be at least 2.54cm. Other distances are shown
below in the field of view diagram. Refer to the chart printed on the meter for more
information.
Diameter of Spot
81.2cm
10.1cm
Laser Beam
Sensor Beam
1.6cm
1.27cm
10.1cm
20.3cm
2.54cm
5.08cm
40.6cm
Measurement Notes
1. The object under test should be larger than the spot (target) size calculated by the field
of view diagram (see diagram on previous page or on side of the meter).
2. If the surface of the object under test is covered with frost, oil, grime, etc., clean before
taking measurements.
3. If an object's surface is highly reflective apply masking tape or flat black paint before
measuring.
4. The meter may not make accurate measurements through transparent surfaces such
as glass.
5. Steam, dust, smoke, etc. can obscure accurate measurements.
6. The meter compensates for deviations in ambient temperature. It can, however, take
up to 30 minutes for the meter to adjust to extremely wide ambient temperature
changes.
7. To find a hot spot, aim the meter outside the area of interest then scan across (in an up
and down motion) until the hot spot is located.
Battery Replacement
When the low battery symbol appears on the LCD, replace the meter’s 9V battery.
The battery compartment is located on the bottom of the meter's handle. Open the
compartment by sliding the battery compartment cover off in the direction of the arrow.
Replace battery and re-install the battery compartment cover.
You, as the end user, are legally bound (Battery ordinance) to return all used
batteries and accumulators; disposal in the household garbage is prohibited!
You can hand over your used batteries / accumulators at collection points in your
community or wherever batteries / accumulators are sold!
Disposal:
Follow the valid legal stipulations in respect of the disposal of the
device at the end of its lifecycle
Copyright © 2009 Extech Instruments Corporation.
All rights reserved including the right of reproduction in whole or in part in any form.
Model 42530-EU V2.4 5/09
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