flexible infrared
thermometer
model 94233
assembly and operating instructions
Visit our website at: http://www.harborfreight.com
read this material before using this product.
failure to do so can result in serious injury.
saVe this manual.
Copyright© 2006 by Harbor Freight Tools®. All rights reserved. No portion of this manual or any artwork con-
tained herein may be reproduced in any shape or form without the express written consent of Harbor Freight
Tools. Diagrams within this manual may not be drawn proportionally. Due to continuing improvements, actual
product may differ slightly from the product described herein. Tools required for assembly and service may not
be included.
for technical questions or replacement parts, please call 1-800-444-3353.
Revised Manual 10c
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8.
9.
Maintain tools with care. Keep the Flexible Infrared Thermometer clean for better
and safer performance. The handle must be kept clean, dry, and free from oil and
grease at all times.
Disconnect power. Turn off tool when not in use. Remove battery when not in use for
a week.
10. Stay alert. Watch what you are doing, use common sense. Do not operate any tool
when you are tired.
11. Check for damaged parts. Before using any tool, any part that appears damaged
should be carefully checked to determine that it will operate properly and perform
its intended function. Check for any broken parts or mounting fixtures; and any
other condition that may affect proper operation. Any part that is damaged should
be properly repaired or replaced by a qualified technician. Do not use the tool if any
button does not turn On and Off properly.
12. Guard against electric shock. Prevent body contact with grounded surfaces such as
pipes, radiators, ranges, and refrigerator enclosures..
13. Do not operate tool if under the influence of alcohol or drugs. Read warning
labels if taking prescription medicine to determine if your judgment or reflexes are
impaired while taking drugs. If there is any doubt, do not operate the tool.
14. Maintenance. For your safety, service and maintenance should be performed
regularly by a qualified technician.
15. Laser beams can cause permanent damage to eyes. Never point the laser beam
at another human or animal. Caution: Do not allow the beam to reflect on a surface;
this could damage your eyes.
16. Do not allow the laser light beam to reflect on any gas; this could cause an
explosion.
17. CAUTION - The use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation exposure.
18. CAUTION - The use of optical instruments with this product will increase eye
hazard.
19. This Flexible Infrared Thermometer is not to be used for food service or medical
applications.
Note: Performance of this tool may vary depending on tool battery power.
Warning:The warnings, cautions, and instructions discussed in this instruction manual
cannot cover all possible conditions and situations that may occur. It must be under-
stood by the operator that common sense and caution are factors which cannot be built
into this product, but must be supplied by the operator.
Unpacking
When unpacking, check to make sure the parts on page 8 are included. If any parts are
missing or broken, please call Harbor Freight Tools at the number on the cover of this
manual as soon as possible.
SKU 94233
For technical questions, please call 1-800-444-3353
Page 3
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Operation
Preparing to Take Measurements
Warning! Laser radiation is dangerous and can cause permanent eye damage. Do not
stare into the beam or point it at others.
Note: You will need to set the “C” or “F” key (5) to establish an LCD readout in either
Fahrenheit or Celsius. Refer to the Assembly Drawing on page 8.
1.
The Thermometer automatically powers ON when the Measuring Key (7) is selected.
The Thermometer will power OFF automatically approximately 7 seconds after the
Measuring Key (7) is released. See Figure 2.
2.
3.
Make sure the target is larger than the units’s spot size. The target should be at least
twice as large. Being closer to the spot will assure accuracy.
Select the temperature units you wish by first pressing the Measuring Key (7) and then
the “C” or F” Key (5). Toggle back and forth to choose the correct reading.
Distance (D) to Spot Size (S)
64@8
32@4
Inches
16@2
8@1
Flexible
Thermometer
Millimeters
200@25
400@50
D:S = 8:1
800@100
1600@200
Figure 1
Special Considerations: Make sure the surface of the object is not covered with frost, dust
or other materials. For accurate results, clean all surfaces before measuring. If the surface
you are measuring is highly reflective, (while it is cool) either paint it with a heat-resistant flat
black paint or put a non-reflective tape on the spot you are measuring.
Laser Key
Backlight
Key (6)
(4)
Measure
Key (7)
LCD Display
(3)
Celsius or
Fahrenheit
Key (5)
Infrared Sensor (1)
and Laser Point
Beam (2)
Figure 2
SKU 94233
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Page 4
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4.
5.
TheThermometer will automatically hold the last temperature reading for seven seconds
after pressing the Measuring Key (7) is pressed and released. No extra keys need to
be pressed to freeze the display reading on the LCD. See Figure 3.
To show the backlighting, first press the Measuring Key (7) and then press the Backlight
Key (6). Press the Laser Key (4) while pressing the Measuring Key (7) to turn the Laser
Pointer (2) ON which will activate the Infrared Sensor (1). Press the Laser Key again
to turn the Infrared Sensor (1) OFF. See Figure 5.
You are now ready to measure.
1.) Digital Readout
2.) Temperature “C” (Celsius)
3.) Temperature “F” (Fahrenheit)
4.) Measuring Indication
5.) Data Hold
6.) Low Battery Indicator
7.) Laser Point
8.) Fixed Emissivity (0.95)
Figure 3
Laser
Pointer (2)
o
o
C/ F Select Key (5)
Infrared
Laser Key (4)
Sensor (1)
Backlight Key (6)
Measuring
Key (7)
Figure 5
Figure 4
Measuring Operation
1.
Hold theThermometer in your hand, point the Laser Pointer (2) and Infrared Sensor (1)
toward the object to be measured.The Thermometer will automatically compensate for
temperature deviations from ambient temperature. Note: It will take up to 30 minutes
to adjust to wide ambient temperature measurements, followed by high temperature
measurements.Sometimes several minutes are required after the low or high temperature
measurements are made; a cooling process must take place for the Infrared Sensor
(1). See Figure 5.
SKU 94233
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Page 5
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Battery Replacement
Note: The LCD will indicate the battery is weak with a flashing display. See Figure 6..
1.
Remove the Screw on the back of the unit to remove the battery compartment lid.
(Screwdriver not provided).
2.
Replace the battery, making sure the polarity connections on the battery correspond
to the polarity in the battery compartment. Snap the battery in place. Reattach the lid
back onto the unit. Tighten the Screw to secure. See Figure 7.
3.
Replace the battery with only a new 9Volt Battery.Check with your localWaste Disposal
Facility, available in your community, for the proper disposal of used batteries.
Low Battery
Indicator
Figure 6
Screw
9 Volt Battery (9)
Battery
Compartment Lid.
Figure 7
Recommendations and Reminders
1.
This Thermometer is not recommended for use in measuring a shiny or polished metal
surface such as stainless steel, aluminum, etc.) To compensate, cover the surface to
be measured with masking tape or flat black paint. Allow the tape to reach the same
temperature as the material underneath.
2.
3.
This unit cannot measure through transparent surfaces such as glass or clear plastic.
Steam, dust, smoke, etc. can prevent an accurate measurement.
SKU 94233
For technical questions, please call 1-800-444-3353
Page 6
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Emissivity
1.
Most organic materials and painted or oxidized surfaces have an emissivity of 0.95
(pre-set in the unit). Inaccurate readings will result from measuring a shiny or polished
metal surface. See recommendations on page 6 for obtaining an accurate reading and
refer to the chart below.
Maintenance
1.
2.
3.
Keep the unit clean. Wipe it down with a lint free cloth.
Make sure the laser is clear of any dirt or debris.
Remove the battery if you are not using the unit for extended periods of time.
SKU 94233
For technical questions, please call 1-800-444-3353
Page 7
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Parts List
Assembly Drawing
Part 1
Part #
Description
QTY
Part 2
1
Infrared Sensor
1
2
3
4
5
6
7
8
9
Laser Pointer Beam
LCD Display
1
1
1
1
1
1
1
1
Laser Key
Celsius or Fahrenheit Select Key
Backlight Select Key
Measuring Key
Battery Compartment
Carrying Case (no shown)
Part 3
Part 4
Part 5
Part 7
Part 6
Part 8
Note: No replacement parts available for this unit.
PLEASE READ THE FOLLOWING CAREFULLY
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDEDTHE PARTS DIAGRAM INTHIS MANUAL
AS A REFERENCE TOOL ONLY. NEITHER THE MANUFACTURER NOR DISTRIBUTOR MAKES ANY
REPRESENTATION OR WARRANTY OF ANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO
MAKE ANY REPAIRSTOTHE PRODUCT ORTHAT HE OR SHE IS QUALIFIEDTO REPLACE ANY PARTS
OFTHE PRODUCT. IN FACT,THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY STATESTHAT
ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED AND LICENSED
TECHNICIANS AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISK AND LIABILITY ARISING
OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR REPLACEMENT PARTS THERETO,
OR ARISING OUT OF HIS OR HER INSTALLATION OF REPLACEMENT PARTS THERETO.
NOTE: Some parts are listed and shown for illustration purposes only and are not available
individually as replacement parts.
SKU 94233
For technical questions, please call 1-800-444-3353
Page 8
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limited 90 day Warranty
Harbor Freight Tools Co. makes every effort to assure that its products meet high quality
and durability standards, and warrants to the original purchaser that this product is free from
defects in materials and workmanship for the period of 90 days from the date of purchase. This
warranty does not apply to damage due directly or indirectly, to misuse, abuse, negligence or
accidents, repairs or alterations outside our facilities, criminal activity, improper installation,
normal wear and tear, or to lack of maintenance. We shall in no event be liable for death,
injuries to persons or property, or for incidental, contingent, special or consequential damages
arising from the use of our product. Some states do not allow the exclusion or limitation of
incidental or consequential damages, so the above limitation of exclusion may not apply to
you. THIS WARRANTY IS ExPRESSLY IN LIEu oF ALL oTHER WARRANTIES, ExPRESS
oR IMPLIED, INCLuDING THE WARRANTIES oF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with
transportation charges prepaid. Proof of purchase date and an explanation of the complaint
must accompany the merchandise. If our inspection verifies the defect, we will either repair or
replace the product at our election or we may elect to refund the purchase price if we cannot
readily and quickly provide you with a replacement. We will return repaired products at our
expense, but if we determine there is no defect, or that the defect resulted from causes not
within the scope of our warranty, then you must bear the cost of returning the product.
This warranty gives you specific legal rights and you may also have other rights which
vary from state to state.
3491 Mission Oaks Blvd. • PO Box 6009 • Camarillo, CA 93011 • (800) 444-3353
SKU 94233
For technical questions, please call 1-800-444-3353
Page 9
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