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OMEGA
OS641C-MV-LS
Infrared Temperature Transducer
With Laser Marker
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INTRODUCTION
This instrument is a portable easy use compact-sized digital infrared tempera-
ture transducer with laser marker designed for simple one hand operation.
SAFETY INFORMATION
It is recommended that you read the safety and operation instructions before
using the infrared thermometer.
The
symbol on the instrument indicates that the operator must refer to an
explanation in this manual.
DANGER
Pressing the
button turns the laser marker on and off. Exercise extreme care and do
not allow the laser beam to enter your eye or those of any other person or animal.
•
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Do not look directly into the laser light from the optical system.
When measuring the temperature of an object which has a mirror finish, be careful not
to allow the laser light beam to be reflected off the surface into your eyes or those of
another person.
•
Do not allow the laser light beam to impinge upon any gas which can explode.
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CAUTION
•
•
•
Do not use the unit near any device which generates strong electromagnetic radiation
or near a static electrical charge, as these may cause errors.
Do not use the unit where it may be exposed to corrosive or explosive gases. The unit
may be damaged, or explosion may occur.
Do not keep or use this unit in an environment where it will be directly illuminated by
sunshine, or where it will be exposed to high temperatures, high humidity or conden-
sation.Ifyoudo,itmaybedeformed,itsinsulationmaybedamaged,oritmaynolonger
function according to specification.
Donotpointthelensatthesunoratanyothersourceofstronglight.Ifyou do,thesensor
may be damaged.
Donotcontactthelensagainsttheobjectwhosetemperatureistobemeasured, orget
it dirty, allow it to be scratched, or allow any foreign material to adhere to it. Doing so
may cause errors.
Do not touch or hold by the front cone. Temperature reading can be affected by heat
from hand.
Do not place the meter on or around hot objects (70°C/158°F). It may cause damage
to the case.
Ifthemeterisexposedtosignificantchangesinambienttemperature(hottocoldorcold
to hot). Allow 20 minutes for temperature stabilization, before taking measurement.
Condensationmayformonthelenswhengoingfromacoldtohotenvironment-wait10
minutes for conden sation to dissipate before taking measurements.
Thisunitisnotconstructedtobewaterproofordustproof,sodonotuseitinaverydusty
environment or in one where it will get wet.
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•
•
•
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SPECIFICATIONS
GENERAL
Low battery indication: the "Red LED " is displayed when the battery voltage
drops below the operating level.
Operating Environment: 0°C to 50°C at < 70% relative humidity.
Storage Temperature: -20°C to 60°C, 0 to 80% R.H. with battery removed from
meter.
Battery: 4 pcs 1.5V (AAA size).
Battery Life: 100 hours (continuity) typical (Laser marker not illuminated).
Dimensions: 170mm(H) x 44mm(W) x 40mm(D).
Weight: 200g including batteries.
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ELECTRICAL
Temperature Range: -20°C to 260°C.
Analog Output: 1mV/°C.
Accuracy: ±3% of reading or ±3°C, whichever is greater @ 18 to 28°C ambient
operating temperature.
Temperature Coefficent: ±0.2% of reading or ±0.2°C, whichever is greater,
change in accuracy per °C change in ambient operating temperature above
28°C or below 18°C.
Response Time: 1 second.
Spectral Response: 6 to 14µm nominal.
Emissivity: Pre-set 0.95.
Detection Element: Thermopile.
Optical Lens: Fresnal Lens.
Sighting: 1-beam laser marker <1mW (class 2).
Field of View: 65mmØ at 1000mm.
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Spot size increases with distance from the probe tip as shown
Danger, Certification & ID Label:
CAUTION: Use of controls or Adjustments
or performance of Procedures other than
those Specified herein may result in
Hazardous radiation exposure.
(Located on back of unit)
Aperture Label (on front):
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OPERATING INSTRUCTIONS
Push buttons
Laser Marker Button
Release MEAS button then press " " button to toggle between turn on and turn
off the Laser Marker annunciator, If " " annunciator turn on, press MEAS button
the laser marker beam is being emitted, releasing MEAS button turn off the laser
marker beam.
MEAS (MEASURE) Button
Depress MEAS button to turn on the meter for temperature measurement.
Release the MEAS button to stop temperature measurement.
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OPERATION
1. Plug the infrared temperature transducer test leads into the Vdc input jack and
common or ground input jack on the DMM. Observe polarity.
2. Set the DMM to the 2V range only, ignore the decimal point.
3. Use " " button to select turn on or turn off the Laser Marker.
4. Point the lens at the object whose temperature is to be measured.
5. Press the MEAS button. Measurement is performed as long as the MEAS
button is kept pressed.
6. Referring to the spot size figure, aim the laser beam at the object whose
temperature is to be measured.
NOTE: Although the field of measurement (or Field of View) and the spot almost
coincide, actually the field of measurement corresponds to the diameter for
90% optical response. The object whose temperature is to be measured needs
to be larger than the measurement diameter (spot of size) by an adequate
margin at least 1.5 to 2 times larger.
7. Read the DMM diaplay.
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MEASUREMENT CONSIDERATIONS
1. Theory of Measurement
Every object emits infrared energy in accordance with its temperature. By
mesuring the amount of this radiant energy, it is possible to determine the
temperature of the emitting object.
2. About Infrared
Infrared radiation is a form of light (electromagnectic radiation), and has the
property that it, passes easily through air while it is easily absorbed by solid
matter. With an emission thermometer which operates by detecting infrared
radiation accurate measurement is possible, irrespective of the air tempera-
ture or the measrement distance.
3. Emission Thermometer Structure
Infrared radiation which has been emitted from the object is focused upon an
infrared radiation sensor, via an optical system which includes a lens is
transparent to infrared rediation, an 5.3µm cut off filter. The output signal from
the infrared radiation sensor is input to an electronic circuit along with the
output signal from a standard tempeature sensor (Thermopile).
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4. Emissivity
All objects emit invisible infrared energy. The amount of energy emitted is
proportional to the object's temperature and its ability to emit IR energy. This
ability, called emissivity, is based upon the material that the object is made of
and its surface finish. Emissivity values range from 0.10 for a very reflective
object to 1.00 for a black body. Factory set emissivity value of 0.95, which
cover 90% of typical applications.
5. If the surface to be measured is covered by frost or other material, clean it to
expose the surface.
6. If the surface to be measured is highly reflective, apply masking tape or matt
finish black paint to the surface.
7. If the meter seems to be giving incorrect readings check the front cone. There
may be condensation or debris obstructing the sensor; clean per instructions
in the maintenance section.
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MAINTENANCE
Battery Replacement
Power is supplied by four 1.5V (AAA size) batteries. The "LOW BATT" red LED
lighted when replacement is needed.To replace the batteries, remove the screw
from the back of the meter and lift off the battery cover case. Remove the
batteries from battery contacts.
Cleaning
Periodically wipe the case with a damp cloth and detergent, do not use abrasives
or solvents.
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Substance
Thermal
emissivity
Substance
Thermal
emissivity
Asphalt
Concrete
Cement
Sand
0.90 to 0.98
0.94
0.96
Cloth (black)
Human skin
Lather
0.98
0.98
0.75 to 0.80
0.90
Charcoal (powder) 0.96
Earth
Water
Ice
Snow
0.92 to 0.96
0.92 to 0.96
0.96 to 0.98
0.83
0.90 to 0.95
0.90 to 0.94
0.94
0.80 to 0.90
0.89 to 0.91
0.93 to 0.96
Lacquer
0.80 to 0.95
0.97
0.94
0.85 to 0.95
0.90
Lacquer (matt)
Rubber (black)
Plastic
Timber
Paper
Glass
Ceramic
Marble
Plaster
Mortar
Brick (red)
0.70 to 0.94
chromium oxides 0.81
Copper oxides
lron oxides
Textiles
0.78
0.78 to 0.82
0.90
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WARRANTY
OMEGA warrants this unit to be free of defects in materials and workmanship and to give satisfactory service for a
period of 13 months from date of purchase. OMEGA Warranty adds an additional one (1) month grace period to the
normal one (1) year product warranty to cover handling and shipping time.This ensures that OMEGA's customers
receive maximum coverage on each product. If the unit should malfunction, it must be returned to the factory for
evaluation. OMEGA's Customer Service Department will issue an Authorized Return (AR) number immediately
upon phone or written request. Upon examination by OMEGA, if the unit is found to be defective it will be repaired or
replaced at no charge. However, this WARRANTY is VOID if the unit shows evidence of having been tampered with
or shows evidence of being damaged as a result of excessive corrosion; or current, heat moisture or vibration;
improper specification;misapplication;misuse or other operating conditions outside of OMEGA's control.Components
which wear or which are damaged by misuse are not warranted. This includes contact points, fuses, and triacs.
OMEGA is glad to offer suggestions on the of use of its various products. Nevertheless, OMEGA only warrants
that the parts manufactured by it will be as specified and free of defects
OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER,
EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE AND ALL IMPLIED WARRANTIES INCLUDING ANY
WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY
DISCLAIMED.
LIMITATION OF LIABILITY:The remedies of purchaser set forth herein are exclusive and the total liability of
OMEGA with respect to this order, whether based on contract warranty, negligence, indemnification, strict
liability or otherwise, shall not exceed the purchase price of the component upon which liability is based. In
no event shall OMEGA be liable for consequential, incidental or special damages.
Every precaution for accuracy has been taken in the preparation of this manual; however, OMEGA ENGINEERING,
INC.neither assumes responsibility for any omissions or errors that may appear nor assumes liability for any damages
that result from the use of the products in accordance with the information contained in the manual.
SPECIAL CONDITION: Should this equipment be used in or with any nuclear installation or activity, purchaser will
indemnity OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the
equipment in such a manner.
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It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that apply. OMEGA is
constantly pursuing certification of its products to the European New Approach Directives. OMEGA will add the CE
mark to every appropriate device upon certification.
The information contained in this document is believed to be correct but OMEGA Engineering, Inc. accepts no
liability for any errors it contains, and reserves the right to alter specifications without notice.
WARNING: These products are not designed for use in, and should not be used for, patient connected application.
RETURN REQUESTS / INQUIRIES
Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department.BEFORE RETURNING
ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR) NUMBER FROM
OMEGA'S CUSTOMER SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING DELAYS). The assigned
AR number should then be marked on the outside of the return package and on any correspondence.
The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent breakage in
transit.
FOR WARRANTY RETURNS, please have the following FOR NON-WARRANTY REPAIRS, consult OMEGA for
information available BEFORE contacting OMEGA:
1. P.O. number under which the product was
PURCHASED.
2. Model and serial number of the product under
warranty, and
current repair charges. Have the following information
available BEFORE contacting OMEGA:
1. P.O. number to cover the COST of the repair.
2. Model and serial number of product , and
3. Repair instructions and/or specific problems relative
to the product.
3. Repair instructions and/or specific problems relative
to the product.
OMEGA's policy is to make running changes, not model changes, whenever an improvement is possible. This
affords our customers the latest in technology and engineering. OMEGA is a registered trademark of OMEGA
ENGINEERING, INC. © Copyright 1999 OMEGA ENGINEERING, INC. All rights reserved. This document may not
be copied, photocopied, reproduced, translated, or reduced to any electronic medium or machine-readable from, in
whole or in part, without prior written consent of OMEGA ENGINEERING, INC.
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Proc e ss Me a sure m e nt a nd Control?
OMEGA...Of Course !
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