Extech Instruments IR250 User Manual

IR250 V2.0 6/09 2
Introduction
Congratulations on your purchase of the Model IR250 Thermometer. This IR
thermometer measures and displays non-contact (infrared) surface temperature to a
maximum of 500
o
F (260
o
C). The built-in laser pointer increases target accuracy and the
backlit LCD allows for use in dimly lighted areas.
Warranty
EXTECH INSTRUMENTS CORPORATION (a FLIR company) warrants this instrument to be free of defects in
parts and workmanship for one year 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

Extech Instruments IR250 Specifications

Temperature Measurement

temperature range	-20 to 260°C (-4 to 500°F)
temperature resolution	0.1°
temperature accuracy	-20°C to -7°C (-4 to 20°F): ±4°C (7.5°F); -7°C to 260°C (20 to 500°F): ±3% of reading or ±2.5°C /5°F (whichever is greater)
emissivity	Fixed 0.95

Display

display type	Backlit LCD display with function indicators
display update rate	Less than 1 second

Operating Environment

operating temperature	0°C to 50°C (32°F to 122°F)
operating humidity	80% Relative Humidity max.

Power

power supply	9V battery
automatic power off	Meter shuts off automatically after 8 seconds

Weight and Dimensions

weight	125g (4.4 oz)
dimensions	80x31.7x137mm (3.15 x 1.25 x 5.4”)