Extech 42545 Operating Manual

User’s Manual

High Temperature InfraRed Thermometer

with Laser Pointer

MODEL 42545

Introduction

Congratulations on your purchase of the Model 42545 IR Thermometer. The 42545 is
capable of 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.

42545

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 -58 to 1832

o

F (-50 to 1000oC) 0.1oC/F to 200°, 1° over 200

Accuracy

Emissivity 0.95 fixed value
Field of View D/S = Approx. 50:1 ratio (D = distance, S = spot)
Laser power Less than 1mW
Spectral response
Over range indication LCD will display “1”

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 6 seconds
Weight/Dimensions 10.2 oz. / 290g 3.9 x 2.2 x 9.0” (100 x 56 x 230mm)

-58 to -4°F ±9°F

-4 to 1000°F ±(2% rdg ± 4oF)
1001 to 1832°F ±(3% rdg ± 9oF)

-50 to -20°C ±5°C

-20 to 538°C ±(2% rdg ± 2oC)
539 to 1000°C ±(3% rdg ± 5oC)
Note: Accuracy is specified for the following ambient

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

6 to 14 µm (wavelength)

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Model 42545 Version 1.1 12/ 04

Meter Description

1. Laser pointer beam

2. IR Sensor

3. Measurement Trigger

4. Battery Compartment

5. LCD Display

6. Push-buttons

7. Handle Grip

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Model 42545 Version 1.1 12/ 04