General Tools and Instruments IRT653 User Manual

Page 3

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Operating Temperature: 32° to 122°F (0° to 50°C), 10 to

90%RH

Auto Power Off: Automatically after approx. 6 seconds
Emissivity: Adjustable 0.1 ~ 1.0
°F/°C Switchable: YES
Backlight: YES
Laser Sight Switchable: YES
Audio Alarm: YES
Max/Min/Avg/

ΔT: YES

Auto Measuring: YES
10 Point Memory: YES
Dimensions: 7.09" x 5.12" x1.57" (180 x 130 x 40mm)
Battery Type: “9V” battery
Battery Life: 16 hours
Weight: 6.6 oz. (187 g) Approx.
Accessory: “9V” battery, Instruction Manual,

Soft Carrying Case

OPERATIONS OF INSTRUMENT

QUICK START:
To measure a temperature, point the unit at the target that
you want to measure, pull the measuring trigger and hold. In
SCAN mode, the LCD displays either the current temperature
in Celsius or Fahrenheit. The unit will HOLD the last reading
for about 6 seconds after the trigger is released; the word
HOLD appears. Be sure to consider the target area that is
inside the angle of vision of this instrument. The single spot
of laser is used for aiming only.

LCD & CONTROL PANEL:

°F/°C AND BATTERY CHANGE:

The unit is powered by “9V” battery and displays
temperature in either °F/°C. The user has to replace the
battery when the battery voltage drops below the voltage for
reliable operation and at the same time the low battery

symbol will

appear. To change the
“9V” battery, pull and
open the unit’s handle
by using the finger.
Change the “9V”
battery with a new
one and push the
battery cover back

in place.

Display Screen

°F/°C switchable

Laser On/Off

“9V” battery

Laser
Sighting

Measuring
Window

Measuring
Trigger

Battery
and Cover

UNIT
DIAGRAM:

SCAN/HOLD/AUTO

mode indication

Laser On/Off

indication

Data

Max/Min/Avg/

ΔT

indication

Down value

button

Function button

Data Memory
indication

°F/°C Indication

Temperature
indication

Low battery

Up value button

Emissivity/High

alarm/Low alarm

adjustable

indication

IRT653 Manual -2P-043008:Layout 1 4/30/08 12:29 PM Page 3

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