CLASS
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LASER RADIATION WHEN OPEN
COMPLIES WITH FDA 21 CFR
SUBCHAPTER J
LASER RADIATION - AVOID
DIRECT EYE EXPOSURE
LASER RADIATION - AVOID
DIRECT EYE EXPOSURE
CLASS llla LASER PRODUCT
LASER RADIATION WHEN OPEN
COMPLIES WITH FDA 21 CFR
SUBCHAPTER J
LASER RADIATION - AVOID
DIRECT EYE EXPOSURE
LASER RADIATION - AVOID
DIRECT EYE EXPOSURE
INSTRUCTION MANUAL
CLASS
llla LASER PRODUCT
LASER RADIATION WHEN OPEN
COMPLIES WITH FDA 21 CFR
SUBCHAPTER J
LASER RADIATION - AVOID
DIRECT EYE EXPOSURE
LASER RADIATION - AVOID
DIRECT EYE EXPOSURE
CLASS llla LASER PRODUCT
LASER RADIATION WHEN OPEN
COMPLIES WITH FDA 21 CFR
SUBCHAPTER J
LASER RADIATION - AVOID
DIRECT EYE EXPOSURE
LASER RADIATION - AVOID
DIRECT EYE EXPOSURE
Controls and Indicators
INF165C
Operating Instructions
Taking Measurements
To take a temperature measurement using your
INF165C, you simply point the aperture at an object and
pull the trigger. The object’s temperature will show up
on the display and update at a rate of approximately 2
4
5
3
times per second.
There will be a delay of approximately one-second
between the time you initially pull the trigger and the
1
time the display comes on. The 60-second auto-hold
initiates at the moment you release the trigger. The
maximum temperature is viewed beside the “ “ icon.
NOTE: This thermometer will automatically shut off if
left idle for more than 15 seconds.
6
Follow these general guidelines to ensure you get the
most accurate readings possible:
• Be sure the measured object fills the “spot”
indicated by the circular laser targeting. The
distance to spot ratio for the INF165C is 12:1.
Introduction
The INF165C quality IR Thermometer is perfect for
apprentice level applications when cost is important
but performance is critical.
Features include
• Temperature Range -76 ~ 1022˚F (-60 ~ 550˚C)
• Circular laser targeting
• Distance to Spot ratio: 12:1
• Fixed Emissivity 0.95
• Max value capture
• Auto off
Safety Notes
Before using this meter, read all safety information
carefully.
In this manual the word “WARNING ” is used to indicate
conditions or actions that may pose physical hazards to
the user. The word “CAUTION ” is used to indicate conditions or actions that may damage this instrument.
NOTE: The INF165C is not recommended for use on
shiny surfaces such as chrome, mirrors or polished
metals.
WARNING!
To avoid thermal shock, the instrument should be
stored at room temperature between 32˚ to 122˚F
(0˚ to +50˚C).
WARNING!
DO NOT look directly into the laser beam. Permanent
eye damage may result.
2
Front view
1. Trigger: Initiates measurements.
2. Infrared Lens
3. Dual Beam Laser
4. LCD Display: Temperature
5. LCD Display: Maximum value
6. Battery Compartment
Displays and Indicators
5
6
4
1
1. Mode button: Select ˚F or ˚C
2. Numerical Display: Indicates measured
temperature value
3. Scale Icons: Indicate that either the
Fahrenheit (˚F) or Celsius (˚C) scale is selected
4. MAX: Displays maximum measured value
5. HOLD: Indicates display is in “HOLD” mode
6. Battery Level
This shows the one-foot spot fitting within the one-foot
target area. At this distance, and anything closer, the
target’s temperature will be accurately measured.
NOTE: If the two-foot diameter spot includes unwanted
objects in the background that are not part of the
one-foot target, the temperature of the background
objects will be figured in with the target’s temperature
and cause errors in your measurements.
LASER RADIATION - AVOID
CLASS llla LASER PRODUCT
DIRECT EYE EXPOSURE
LASER RADIATION WHEN OPEN
LASER RADIATION - AVOID
DIRECT EYE EXPOSURE
COMPLIES WITH FDA 21 CFR
SUBCHAPTER J
12
• When comparing temperatures of similar objects
that are far away, take your measurements at the
same distance and angle to the target each time.
• When looking for abnormally hot or cold targets it
may be acceptable to include background objects
so long as the temperatures in the background
and your methods are consistent.
• Consider the emissivity of the objects you
3
are measuring.
2
• Prepare a surface for measurement. Infrared
thermometers measure only the outer surface of
an object. If emissivity is affecting the
measurement, or you have difficulty putting the
object in the sensor’s line-of-site, you may need
to prepare a surface that’s easy for the infrared
thermometer to read. A piece of masking tape is a
good target and it will rapidly take on the
temperature of the object it is attached to.
• Be aware that you cannot measure the
temperature of air between the Infrared
thermometer and an object. Air vents (registers)
are quick to take on the temperature of outlet air.
However, you must aim directly at the vent if you
are measuring outlet air temperature.
• Keep your infrared thermometer away from
strong electrical fields. When working near a
strong electrical field, like that under the hood of
your car, watch for unusual readings or an “over
load” indication. Often, you can move the
thermometer just a few inches to escape the
influence of the interference.
• Keep your INF165C within its use and storage
temperature range. Excessive heat or cold will
adversely affect the accuracy of your readings.
When the trigger is pulled the target’s
temperature will be displayed in a near real-time
mode (less than 1/2 second between
measurements). The temperature will remain
on the display for sixty seconds after the trigger
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is released.
Emissivity
Not all surfaces emit infrared energy at the same
level. A shiny surface will emit much less infrared
energy at a given temperature when compared to
a flat black surface. The INF165C has two preset
emissivity levels used to compensate for variances
in your target.
High (0.95) will work for most common surfaces
and is set as default for many infrared
thermometers.
Changing Scales
To change scales between degrees Fahrenheit and
degrees Celsius, press the mode button on the panel,
while the display is active. Even if the trigger is
released and the display is in its 60-second automatic
hold, you can convert the reading between scales.
Each time you press the scale button, the 60-second
hold will reset. The INF165C will default to the scale last
used the next time it is turned on.
Using the Laser Sight & Backlight
The INF165C is classified as a “Laser Product”, and is
regulated by the FDA. The laser and backlight are
always on when the trigger is pulled.
CAUTION!
Using controls, making adjustments, or performing
procedures in any manner other than that specified
herein may result in hazardous laser radiation exposure.
LCD Error Messages
The thermometer incorporates visual diagnostic
messages as follows:
: “Er2” is displayed when the
thermometer is exposed to rapid
changes in the ambient temperature.
: “Er3” is displayed when the ambient
temperature exceeds the operation
range of 32˚ to 122˚F (0˚ to 50˚C). The
thermometer should be allowed
plenty of time (minimum 30 minutes)
to stabilize to the working/room
temperature.
: For all other error messages it is
necessary to reset the thermometer.
Maintenance
Periodic Service
WARNING!
Repair and service of this instrument is to be performed by
qualified personnel only.
Cleaning
Periodically clean your instrument’s case using a damp cloth.
DO NOT use abrasive, flammable liquids, cleaning solvents,
or strong detergents as they may damage the finish, impair
safety, or affect the reliability of the structural components.
Battery Replacement
Always use a fresh replacement battery of the specified size
and type. Immediately remove the old or weak battery from
the meter and dispose of it in accordance with your local
disposal regulations. Old or defective batteries can leak
chemicals that corrode electronic circuits.
To replace the battery:
1. Slide the battery cover straight down then away from
the INF165C.
2. Replace with fresh AAA batteries.
3. Replace cover.
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LASER RADIATION WHEN OPEN
LASER RADIATION - AVOID
DIRECT EYE EXPOSURE
LASER RADIATION - AVOID
DIRECT EYE EXPOSURE
COMPLIES WITH FDA 21 CFR
SUBCHAPTER J
EMC/RFI
Readings may be affected if the unit is operated within
radio frequency electromagnetic field strength of
approximately 3 volts per meter, but the performance
of the instrument will not be permanently affected.
IR Thermometers
Infrared Thermometers measure the amount of thermal
radiation emitted from an objects surface. To take a
measurement, the object must be within the field of
view of the infrared thermometer, or the reading may
include objects surrounding your target. This target size
is determined in the distance to spot ratio stated on the
instruments specifications. At a ratio of 10:1, a distance
from your target of ten feet will give you a circle with
one foot diameter. At 20:1 ratio gives the same one foot
target now at 20 feet, so you can see that higher is better, but typically more expensive due to the cost of the
optics involved.
The other common question is regarding emissivity. In
simple terms emissivity is a percentage of energy
emitted from a surface compared to the energy emitted
from a black body source. If a surface emits one half
(1/2 or 0.5) the amount of energy at a given temperature
and wavelength as a black body, it is said to have an
emissivity of 0.5.
Surfaces closest to the black body level would be flat
black, and those farthest from it would be mirror or
chrome surfaces. With a set emissivity level some
surfaces may measure lower than actual, because their
surface is emitting less thermal radiation at a given
temperature. Although you may have a fixed emissivity
of 0.95, most items measured will provide a reasonably
accurate result. Having a fully adjustable emissivity will
give you the ability to fine tune your instrument to a
specific application.
: ‘Hi’ or ’Lo’ is displayed when the
temperature being measured is
outside of the measurement range.
To reset the thermometer, turn the instrument off, remove
the battery and wait for a minimum of one minute. Reinsert
the battery and turn it on. If the error message remains
please contact UEi service department for
further assistance.
Battery Indicators
The thermometer incorporates visual low battery
indications.
: “Battery OK” measurements
are possible
: “Battery Low” battery needs to be
replaced, measurements are
still possible
: “Battery Exhausted” measurements
are not possible
INF165C
Infrared Thermometer
“AAA” (x2)
Lens Care
The sensor lens is the most delicate part of the thermometer. The lens should be kept clean at all times. Care should
be taken when cleaning the lens using only a soft cloth or
cotton swab with water or medical alcohol. Allowing the
lens to fully dry before using the thermometer. Do not submerge any part of the thermometer in liquids.
WARNING!
Under NO circumstance should you expose batteries to
extreme heat or fire as they may explode and cause injury.
NOTE: This instrument contains no user serviceable parts. If
service becomes necessary, call UEi and ask for the service
department. See the warranty section of this manual for
additional details.
Specifications
Measurement range -76 ~ 1022˚F (-60 ~ 550˚C)
Operating range 32˚ ~ 122˚F (0 ~ 50˚C)
Accuracy (Tobj= 15~35˚C,
Tamb=25˚C)
Accuracy (Tamb=23
± 3˚C)
Emissivity Fixed 0.95
Resolution 0.1˚F/0.1˚C at -76 to 999.9 (˚F/ ˚C),
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Response Time (90%) 1 second
Distance: Spot 12:1
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Battery life Typ. 14 hours 18 minutes
Dimensions 6.12” X 1.57” X 4.45”
Weight 6.1 oz (173g) including
The thermometer will automatically shut off if left idle for
more than 15 second.
±2.7% (1.5˚C)
Tobj=0~550˚C: ±2% of reading or
2˚C(4˚F) whichever is greater
Tobj=-60~0˚C: ±(2˚C+0.05/
degree C)
otherwise 1˚F/1˚C
continuous use
(155.5 X 40 X 113mm)
batteries (AAA x 2pcs)
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