Extech Instruments 42530 User Manual

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.

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX [phone] - TestEquipmentDepot.com

oral, is expressed or implied.

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

o

Range / Resolution -58 to 1000
Accuracy ± 2% of reading or ± 4oF (2oC) whichever is greater.

Note: Accuracy is specified for the following ambient

temperature range: 64 to 82°F (18 to 28°C)
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

6 to 14 µm (wavelength)

General Specifications

Display 3½ digit backlit LCD display with function indicators
Display rate 1 second approx.
Operating Temperature 32°F to 122°F (0°C to 50°C)
Operating Humidity Max. 80% RH
Power Supply 9V battery
Automatic Power Off Meter shuts off automatically after 7 seconds
Weight 6.35 oz. / 180g
Size 8.3 x 3.5 x 1.5” (211 x 89 x 38mm)

F (-50 to 538oC) 0.1°C/F<200 / 1oC/F> 200

Model 42530 Version 2.4 11/05 2

Meter Description

1. LCD Display

2. Function Buttons

3. Handle Grip

4. Laser Pointer

5. IR Sensor

6. Measurement Trigger

7. Battery Compartment

1
2

3

4
5

6

7

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 (
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.

Overrange Indicator

If the temperature being measured exceeds 1000°F (538°C), the thermometer will emit an
audible warning and the OVER icon will be displayed on the LCD.

o

C or oF) using the blue oC and oF buttons.

Model 42530 Version 2.4 11/05 3

Field of View

The meter’s field of view is 8:1, meaning that if the meter is 8 inches from the target, the
diameter of the object under test must be at least 1 inch. Other distances are shown below
in the field of view diagram. Refer to the chart printed on the meter for more information.

4”

Diameter of Spot

0.5”

8”

1”

16”

Distance to Object

2”

4”

Laser Beam

0.63”

Sensor Beam

32”

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.

Calibration and Repair Services

Tech support: Ext. 200; Email: [e-mail]
Repair/Returns: Ext. 210; Email: [e-mail]

Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176

FAX [phone] - TestEquipmentDepot.com

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Support Hotline [phone]

Website: www.extech.com