Extech 42509 Operating Manual
User Manual
Dual Laser InfraRed (IR) Thermometer
with Color Alert
MODEL 42509
Introduction
Congratulations on your purchase of the Model 42509 IR Thermometer with Color Alert.
This Infrared thermometer measures and displays non-contact temperature readings up to
o
F (510oC). Dual laser pointers ensure accurate targeting and temperature
950
measurement. The Color Alert feature indicates when High or Low set points are
exceeded. The adjustable emissivity feature allows the IR thermometer to measure the
temperature of virtually any surface. Proper use and care of this meter will provide years of
reliable service.
Warranty
EXTECH INSTRUMENTS CORPORATION (A FLIR COMPANY) warrants this instrument to be free of defects
in parts and workmanship for three years from date of shipment (a six month limited warranty applies on
sensors and cables). If it should become necessary to return the instrument for service during or beyond the
warranty period, contact the Customer Service Department at (781) 890-7440 ext. 210 for authorization or visit
our website at www.extech.com (click on ‘Contact Extech’ and go to ‘Service Department’ to request an RA
number). A Return Authorization (RA) number must be issued before any product is returned to Extech. The
sender is responsible for shipping charges, freight, insurance and proper packaging to prevent damage in
transit. This warranty does not apply to defects resulting from action of the user such as misuse, improper
wiring, operation outside of specification, improper maintenance or repair, or unauthorized modification. Extech
specifically disclaims any implied warranties or merchantability or fitness for a specific purpose and will not be
liable for any direct, indirect, incidental or consequential damages. Extech's total liability is limited to repair or
replacement of the product. The warranty set forth above is inclusive and no other warranty, whether written or
oral, is expressed or implied.
Safety
• Use extreme caution when the laser pointer 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
2
42509 V1.0 07/09
Meter Description
1. Dual Laser pointers
2. LCD Display
3. Function Buttons
4. Measurement Trigger
5. Battery and F/C Switch compartment
DISPLAY
1. SCAN, measurement in progress
2. HOLD, last measurement locked in display
3. Laser pointer active
4. Power locked ON
5. High limit alarm
6. Low limit alarm
7. C or F temperature units
8. Main temperature display
9. Low battery icon
10. MAX icon
11. Emissivity setting
12. Emissivity icon
13. Max temperature display
3
42509 V1.0 07/09
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