General Tools and Instruments IRT2 - Manual

Congratulations on your purchase of the
Mannix Infrared Thermometer, model IRT2.
The compact size lets you get into tight places
while its convenient laser targeting and high
distance-to-spot ratio give you accurate
readings on distant targets .
• Precise non-contact measurements
• ˚F/ ˚C switch
• Data hold
• Laser target pointer
• The meter provides simple one hand opera-
tion and time saving temperature measure-
ment. Be sure the measured object fills the
“spot” seen by the aperture.
• There will be a delay of approximately one
second between the time you initially press
the button and the time the display comes
on.
• Not recommended for measuring on shiny
surfaces. The smaller the target, the closer
the unit should be to it. To avoid thermal
shock, do not store the meter below
freezing.
• The meter is pre-set to measure objects
with an emissivity of 0.95. This will
accommodate the majority of items
measured without compensating for higher
or lower value. In most cases there will be
little difference in measurements, even if an
object’s emissivity is higher or lower than
this pre-set value. Compare and confirm
with known values if in doubt.
CAUTION
UNIT DESCRIPTION
! Use extreme caution when the laser beam is
turned on.
! Do not point the laser toward the eyes or face
of a person or animal. Laser’s potential to
cause damage is retained for hundreds of
feet.
! Be careful not to let the beam on a reflective
surface strike your eye.
! Do not use near any flammable items or
gases.
Measuring Range: -4 to 500˚F (-20 to 260˚C)
Resolution: 1˚F (1˚C)
Accuracy: ±3˚C or ±3%
(whichever is greater)
Accuracy Notes:
1) Accuracy stated is for ambient temperature
2) Accuracy stated is for emissivity of 0.95
Emissivity: 0.95 fixed
Distance Factor: D:S = Approx. 6:1
Sampling Rate: 1 second (approx.)
Display: LCD display with backlight
Power Off: Automatic shut off after 4 seconds
Operating Temp.: 32 to 122˚F (0 to 50˚C)
Operating Humidity: Maximum of 80% RH
Power Supply: 9-volt battery
Power Current: 10mA DC (approx.)
Display Size: 1.05” x 0.69”
Weight: 6.4 oz.
Dimensions: 6.3” x 2” x 1.3”
DISPLAY INDICATION SPECIFICATIONS
1. Laser Icon
2. Digital Readout
3. ˚C (Celsius)
4. ˚F (Fahrenheit)
8.8.8
˚F
˚C
1
2
3
4
MEASUREMENT OPERATION
A. Power ON/OFF
The meter automatically powers up when the
measurement trigger is pulled. The meter
powers off automatically approximately 4 sec-
onds after the measurement trigger is
released.
B. LCD Backlight
Select backlight by first pulling the measure-
ment trigger and then pressing the BACK-
LIGHT button. Repeat the procedure to turn
the backlight off.
C. Laser Pointer
To turn the laser pointer on, first pull the
measurement trigger then press the LASER
button while continuing to pull the measure-
ment trigger. Repeat the procedure to turn
the laser OFF
D. Data Hold
The meter automatically hold the last tempera-
ture reading on the LCD for five seconds after
the trigger has been released. No additional
key presses are necessary to freeze the last
displayed reading.
E. Measurement Considerations
While holding the meter, point the IR Sensor
toward the object whose temperature is to be
measured. The meter automatically compen-
sates for temperature deviations from ambient
temperature.
Keep in mind that it will take up to 30 minutes
to adjust to wide ambient temperature
changes. When low temperatures are to be
measured followed by high temperature meas-
urements, some time (several minutes) is
required after the low (and before the high)
temperature measurements are made. This is
a result of the cooling process which must take
place for the IR sensor.
BATTERY REPLACEMENT
To replace the battery open the Battery com-
partment on the bottom of the unit and remove
the battery, then install a new battery and
replace the cover.
TROUBLESHOOTING
? Meter does not turn on - Check voltage and
relace low battery. Or check time delay
which is allowed 1 second for data to
appear on-screen.
? Data flashing or laser comes on but no
data appears - Check battery voltage and
then replace low battery.
? Dashes appear on-screen - Check extreme
temperature, measure surrounding area to
see if the target exceeds the limit.
MAINTENANCE
Case cleaning:
Clean the exterior housing of the unit with a
damp cloth (use caution). Ensure no water or
soap is allowed inside the meter or on the
infrared lens.
Lens cleaning:
WARNING: We recommend cleaning the lens
periodically to ensure the reading accuracy. To
remove any particles on the lens use low pres-
sure compressed. If the contamination cannot
be removed with air, use a soft cotton swab.
The swab should be slightly damp and very
light pressure should be applied. Do not use
solvents to clean the lens.
1 2 3 4 5 6
1. LCD display
2. ˚F/ ˚C button
3. Laser button
4. IR sensor
5. Laser pointer beam
6. Backlight button
7. Measurement trigger
8. Battery compartment