Omega Thermometer OS950 User Manual

User’s Guide  
Shop online at  
®
omega.com  
®
OS950 SERIES  
Handheld Infrared  
Thermometers  
 
 
 
Table of Contents  
Chapter One - Welcome to Infrared Thermometry . . . .1  
1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . .1  
1.2 Product Features . . . . . . . . . . . . . . . . . . . . . . .1  
1.3 Models and Ordering Information . . . . . . . . . . .1  
Chapter Two - Operation . . . . . . . . . . . . . . . . . . . . . . .2  
2.1 OS950 Controls . . . . . . . . . . . . . . . . . . . . . . . .2  
2.2 To Change Display Measurement Units . . . . . .2  
2.3 To Change Mode of Operation . . . . . . . . . . . . .3  
2.4 Temperature Measurements . . . . . . . . . . . . . . .3  
2.4.1 General Operation . . . . . . . . . . . . . . . . .3  
2.4.2 Temperature Measurement of  
Moving Targets . . . . . . . . . . . . . . . . . .4  
2.4.3 High Temperature Targets . . . . . . . . . . .4  
2.5 MAX Mode Temperature Measurements . . . . . .4  
2.5.1 General Operation . . . . . . . . . . . . . . . . .4  
2.6 SCAN Mode Temperature Measurements . . . . .5  
2.6.1 General Operation . . . . . . . . . . . . . . . . .5  
Chapter Three - Measurement Tips . . . . . . . . . . . . . . . .5  
3.1 Optimizing Target Area Measurements . . . . . . .5  
3.2 Measuring Metallic Targets . . . . . . . . . . . . . . . .6  
3.3 Optimizing AESC Measurements for  
NIST Traceability . . . . . . . . . . . . . . . . . . . . . . .6  
3.4 Measuring Transparent Materials . . . . . . . . . . .6  
3.5 Measuring Wet or Icy Surfaces . . . . . . . . . . . . .6  
Chapter Four - Maintentance . . . . . . . . . . . . . . . . . . . . .7  
4.1 Battery Replacement . . . . . . . . . . . . . . . . . . . .7  
4.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7  
4.3 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7  
4.4 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . .7  
Chapter Five - Troubleshooting . . . . . . . . . . . . . . . . . . .7  
5.1 Diagnostic Codes . . . . . . . . . . . . . . . . . . . . . . .7  
5.2 Troubleshooting Measurement Difficulties . . . . .9  
Chapter Six - OS950™ Specifications . . . . . . . . . . . . . .9  
 
Chapter One - Welcome to Infrared  
Thermometry  
1.1 Introduction  
Omega Engineering, the world's leading manufacturer of  
infrared temperature systems, presents the low cost  
OS950™ Series of hand held infrared thermometers.  
These dual-purpose systems function as both NIST trace-  
able temperature calibrators and thermal scanning devices.  
Make fast, accurate, and reliable temperature measure-  
ments using advanced non-contact IR technology.  
Meet your company's product quality conformance needs  
with the OS950's patented Automatic Emissivity  
Compensation System (AECS). In this mode, the unit will  
provide precision temperature measurements of spot tar-  
gets, without knowing the target's emissivity value, and  
without errors caused by other sources of incident radiation.  
Since the OS950 is NIST traceable, it can function as a pri-  
mary temperature calibrator for other temperature measur-  
ing devices, serving your corporate quality instrument cali-  
bration programs. Operate the OS950 in SCAN mode, for  
thermal scanning measurements over a range of target  
temperatures. Thermal Scanning is very useful in many  
applications such as evaluating insulation, monitoring  
machinery, and inspecting electrical equipment. Or the  
OS950 may be operated in the MAX mode where the high-  
est temperature measured while monitoring is presented.  
This manual provides complete instructions on how to oper-  
ate and use your OS950-- to provide fast, accurate, reliable  
temperature measurements for your application needs.  
1.2 Product Features  
Designed for ease of use and measurement flexibility, the  
OS950 features:  
Dual purpose, AECS as well as MAX and SCAN  
measurement modes  
Measurement resolution to 0.1 °F or 0.1°C  
Factory calibration for precise results  
A 10 second display reading hold  
Internal self test and error diagnostic codes to insure  
proper function  
1.3 Models and Ordering Information  
OS950 -50 to 550°F (-45 to 287°C) Unit includes a 9 V  
DC Alkaline Battery and OS950 Instruction  
Manual. Also available with a Remote Sensor,  
RS232 Digital Output and an Analog Output.  
OS953 0 to 1000°F (-18 to 538°C) Unit includes a 9 V  
DC Alkaline Battery and OS950 Instruction  
Manual. Also available with a Remote Sensor,  
RS232 Digital Output and an Analog Output.  
OS955 0 to 1207°F (86 to 653°C) Unit includes a  
Remote Sensor, 9 V DC Alkaline Battery and  
OS950 Instruction Manual. Also available with  
an RS232 Digital Output and an Analog Output.  
1
 
OS956 0 to 1600°F (86 to 871°C) Unit includes a  
Remote Sensor, 9 V DC Alkaline Battery and  
OS950 Instruction Manual. Also available with  
an RS232 Digital Output and an Analog Output.  
Chapter Two - Operation  
2.1 OS950 Controls  
MEASUREMENT  
button  
LED Display  
Sensor Window  
AECS Cup  
Battery Cover  
Screw  
LED Display  
Displays target temperature and diag-  
nostic codes  
Measurement  
button  
To turn on and start temperature meas-  
urement  
Nosepiece  
w/AECS cup  
Automatic emissitivity compensation  
system nosepiece to contact target  
Sensor window Sensor viewing area for IR detector  
2.2 To Change Display Measurement Units  
The OS950 Models come from the factory displaying tem-  
perature in units of Fahrenheit. To display readings in units  
of Celsius, perform the following steps:  
1. Remove the screw from the underside of the case.  
2. Remove the cover, exposing the battery area.  
3. Locate the push button switch as shown in the picture.  
4. With the unit off (display is blank), push the push but-  
ton in.  
5. Holding the push button in, turn the unit on with the  
MEASUREMENT button.  
2
 
The instrument now reads in °C instead of °F. To return to  
the original setting, simply repeat the process.  
ºF/ºC Switch  
MAX/SCAN Switch  
2.3 To Change Mode of Operation  
The OS950 Models come from the factory operating in the  
MAX mode. To change to the SCAN mode perform the fol-  
lowing steps:  
1. Remove the screw from the underside of the case.  
2. Remove the cover, exposing the battery area.  
3. Locate the slide switch as shown in the picture.  
4. Change the position of the slide switch from 1 to ON.  
The unit will now operate in the SCAN mode. ON Î SCAN,  
1 Î MAX.  
2.4 Temperature Measurements  
2.4.1 General Operation  
CAUTION... SHOCK HAZARD  
DO NOT TOUCH THE INSTRUMENT  
TO ELECTRICAL CONDUCTORS*  
The OS950™ measures temperature very quickly. To  
obtain an accurate measurement, it is only necessary to  
touch the surface for a fraction of a second.  
For exact surface temperature measurements that are NIST  
traceable, use the following procedure:  
1. Press and hold the MEASURE button.  
2. The display will briefly show [8888].  
3. Touch the nosepiece to the target surface.  
4. The display may or may not change, but the "beeping"  
sound will indicate that measurements are being  
made.  
5. Record the temperature from the display.  
6. Release the MEASURE button. The last reading will  
remain locked on the display for 10 seconds after  
releasing the button.  
3
 
2.4.2 Temperature Measurement of Moving  
Targets  
To measure moving targets that are not possible to touch,  
use the following procedure:  
1. Press and hold the MEASURE button.  
2. The display will briefly show [8888].  
3. Bring the nosepiece as close as possible to the target,  
preferably within 1/32 inch (1 mm). **  
4. The display may or may not change, but the "beeping"  
sound will indicate that measurements are being  
made.  
5. Record the temperature from the display.  
6. Release the MEASURE button. The last reading will  
remain locked on the display for 10 seconds after  
releasing the button.  
** If the surface is metallic, be sure to mark it as described  
in the Measurement Tips section in Chapter Three.  
2.4.3 High Temperature Targets  
When using the OS950™ to measure high temperature tar-  
gets, above 100 °F, quickly touch the target's surface -- one  
second is long enough to get an accurate reading.  
Follow the procedures described above under 2.4.1  
General Operation (see pg. 5). If the OS950 makes contact  
with a hot surface for an extended time (10 seconds or  
more) the target will conduct heat. Although this will not  
harm the unit, the indicated temperature may be a few  
degrees too high. Allow a few minutes between readings  
for the nosepiece to cool down and stabilize.  
If the OS950 makes contact with a hot surface and an error  
message [HI] shows on the display remove the instrument  
from the object immediately.  
2.5 MAX Mode Temperature Measurements  
Use this measurement mode when making contact with the  
target or when the target is large. The OS950 is a wide-  
angle thermal scanner with a fixed emissivity of 0.9. The  
target's temperature is continuously displayed and updated  
10 times per second for as long as you hold the MEASURE  
button down.  
The OS950 displays the average temperature of everything  
within the sensor's field of view measurement area. The  
size of the measuring area depends on the distance of the  
device from the target. The OS950 has a 1:1 field of view,  
which means that this unit will measure a 1"diameter target  
area when the device is 1" from the target.  
2.5.1 General Operation  
For continuous temperature measurement of a target or for  
temperature measurement at a distance, use the following  
procedure.  
1. Determine the appropriate measurement distance from  
your desired target. Best measurements are made  
when the OS950 is in contact with the target.  
2. Make sure the MODE switch is on MAX.  
3. Point the nosepiece at the target.  
4. Press and hold the MEASURE button.  
4
 
5. Record the temperature from the display.  
6. Release the MEASURE button. The last reading will  
remain locked on the display for 10 seconds after  
releasing the button.  
2.6 SCAN Mode Temperature Measurements  
Use this measurement mode for thermal scanning of a tar-  
get or when measuring targets located at a distance. The  
OS950 is a wide-angle thermal scanner with a fixed emis-  
sivity of 0.9. The target's temperature is continuously dis-  
played and updated 10 times per second for as long as you  
hold the MEASURE button down.  
The OS950 displays the average temperature of everything  
within the sensor's field of view measurement area. The  
size of the measuring area depends on the distance of the  
device from the target. The OS950 has a 1:1 field of view,  
which  
means that this unit will measure a 1"diameter target area  
when the device is 1" from the target.  
2.6.1 General Operation  
For continuous temperature measurement of a target or for  
temperature measurement at a distance, use the following  
procedure.  
1. Determine the appropriate measurement distance from  
your desired target.  
2. Make sure the MODE switch is on SCAN.  
3. Point the nosepiece at the target.  
4. Press and hold the MEASURE button.  
5. Record the temperature from the display.  
6. Release the MEASURE button. The last reading will  
remain locked on the display for 10 seconds after  
releasing the button.  
Chapter Three - Measurement Tips  
3.1 Optimizing Target Area Measurements  
When performing a continuous thermal scan of a target, or  
measuring a target located at a distance, proper target  
alignment will help assure accurate results. Since the  
OS950's sensor measurement area is fixed at a field of  
view of 1 to 1, it is important to properly determine the best  
measuring distance from the target, to optimize the reading.  
A field of view of 1 to 1 means that the OS950 viewing area  
is 1" diameter for 1" distance from target. Optimize optical  
alignment, so that the OS950 views only the target and  
does not overlap the measurement area. See Figure below  
for examples of proper optical alignment.  
POOR  
POOR  
5
GOOD  
 
3.2 Measuring Metallic Targets  
In general, infrared thermometers can easily measure non-  
metallic surfaces because they emit most of their potential  
heat. Metallic surfaces, on the other hand, are poor emit-  
ters and require special treatment before infrared ther-  
mometers can accurately measure their temperature.  
Fortunately, that special treatment is simple and can be  
easily accomplished by marking the metallic surface you  
wish to measure with a non-metallic substance such as a  
solid paint marker. Other substances such as grease, oil,  
or tape may also be used. It is only necessary to mark an  
area slightly larger that the OS950 nosepiece, when operat-  
ing in AECS mode. When operating in MAX or SCAN  
modes, mark the appropriate target area for the measuring  
distance from the target, based on a 1 to 1 Field of View.  
3.3 Optimizing AESC Measurements for  
NIST Traceablity  
If you look at the OS950's nosepiece, you will see that it is  
really a small reflective cup with the sensor's window at its  
base. When the OS950's nosepiece touches the surface of  
an object, that reflective cup automatically controls what the  
sensor sees by eliminating variables such as target emis-  
sivity and extraneous radiation. Patented by Exergen as  
the Automatic Emissivity Compensation System (AECS),  
this unique design ensures accurate readings every time.  
To optimize results, make sure that the nosepiece is flush  
with the target when possible, so that the reflective cone  
can complete trap out any light or incident radiation from  
the environment.  
3.4 Measuring Transparent Materials  
Although transparent materials pass visible light, many visi-  
bly transparent materials are opaque in the infrared and  
can be directly measured by the OS950.  
To test for infrared transparency, touch the OS950 to the  
target's surface and pass a heat source such as your hand  
or a penlight through the sensor's field of view on the other  
side of the material. If the OS950 responds to the heat  
source, the material is transparent in the infrared, and  
requires marking the surface for proper measurement.  
Mark the surface with an opaque non-metallic coating, such  
as paint or grease.  
Alternatively, place a shiny metallic object, such as alu-  
minum foil, behind the transparent material. The shiny  
metal will reflect the target's heat back to the OS950.  
3.5 Measuring Wet or Icy Surfaces  
Wet or icy surfaces may interfere with the OS950's read-  
ings. Water and other liquids are good targets, but evapo-  
ration lowers their surface temperatures.  
Frost forms on a surface at the freezing point of water.  
Frozen foods or similar targets will form frost unless the  
environment is controlled. If frost forms, the OS950 will  
measure the temperature of the frost instead of the object's  
temperature.  
Melting ice will read slightly higher than 32 °F (0°C)  
because the instrument actually measures the air condens-  
ing on the ice, a reaction that generates a small amount of  
6
 
heat. As long as the ice is not melting, the OS950 will  
accurately read its temperature.  
To make an accurate target measurement, remove any ice  
or moisture before measuring.  
Chapter Four - Maintenance  
The high-performance OS950 is a rugged and durable  
instrument, designed for long term performance reliability.  
4.1 Battery Replacement  
Open the instrument's cover to access the battery by loos-  
ening the screw on the back of the instrument. Remove the  
old battery and replace it with one fresh, 9 V alkaline bat-  
tery. Align the battery contacts as indicated on the case.  
4.2 Cleaning  
The only maintenance required involves keeping the sensor  
window clean. This window, located at the base of the  
nosepiece's reflective cup, is made of a special crystal that  
passes infrared heat. Dirt, greasy films, or moisture on the  
window will interfere with the passage of infrared heat and  
affect the accuracy of the instrument.  
If necessary, clean the sensor window and reflective cup  
with a cotton swab dipped in alcohol. Periodic cleaning is a  
good practice.  
4.3 Storage  
When not in use, store the OS950 in a container, to protect  
the unit from dirt and dust. Do not store the unit in areas of  
extreme heat, cold, or humidity. If not using the OS950 for  
a long period, remove the battery from the unit.  
4.4 Calibration  
The OS950 is factory calibrated under high quality stan-  
dards. Because there are no mechanical adjustments, the  
instrument is able to maintain its calibration through vibra-  
tion and normal use. No field calibration is necessary.  
Chapter Five - Troubleshooting  
5.1 Diagnostic Codes  
The high-performance OS950™ continuously monitors its  
ability to produce accurate temperature readings. If either  
the target's temperature or the unit's ambient temperature  
exceeds the operational limits, the display will default to an  
error message.  
The battery voltage is also monitored. A low battery is indi-  
cated by a separate error code. The unit will continue to  
operate as long as accuracy can be assured. If the battery  
drops below 5.7 volts, the battery is considered "dead" and  
the display defaults to [----].  
7
 
If the [E-##] or [Err] error messages are displayed, the unit  
will not function and must be returned to the factory for  
repair. (See section on Warranty for return instruction).  
The following charts summarize the fault condition, and the  
associated indication.  
High Target Temperature  
Condition  
Error Measurement Remedy  
Code Fault  
Model OS951  
Model OS953  
Model OS955  
Model OS956  
[HI] Target >550°F Use higher  
(287 °C)  
[HI] Target >1000 Use higher  
°F (538 °C) OS950  
[HI] Target >1207 Use higher  
°F (653 °C) OS950  
[HI] Target >1600 Contact  
°F (871 °C) Omega  
OS950  
Low Target Temperature  
Condition  
Error Measurement Remedy  
Code Fault  
Model OS951  
Model OS953  
Model OS955  
Model OS956  
[LO] Target < -50 °F Contact  
(-45 °C)  
[LO] Target <0 °F (- Use lower  
18 °C) OS950  
[LO] Target <186 °F Use lower  
(86 °C) OS950  
[LO] Target <186 °F Use OS951 or  
(86 °C) OS953  
Omega  
Other Errors  
Condition  
Error Measurement Remedy  
Code Fault  
High Ambient [HI A] Ambient > 122 Move to  
Temperature  
°F (50 °C)  
alternate  
location  
Low Ambient [LO A] Ambient < 32 Move to  
Temperature  
Low Battery  
Dead Battery  
°F (0 °C)  
alternate  
location  
[N/A] Battery power Replace  
low  
battery  
[----] Dead battery  
Replace  
battery  
Processing  
Error  
[E-##] Internal fault  
or [Err}  
Repeat  
measurement,  
if error  
remains,  
contact  
Omega  
8
 
5.2 Troubleshooting Measurement  
Difficulties  
If you experience measurement problems, review the fol-  
lowing troubleshooting steps:  
Is the sensor window clean?  
Clean the sensor window and reflective cup and repeat the  
measurement.  
Is the target's surface non-metallic?  
Coat metallic surfaces with a non-metallic finish and repeat  
the measurement.  
Is the target's surface transparent?  
Coat transparent surfaces with an opaque non-metallic fin-  
ish and repeat the measurement.  
Alternatively, put a shiny metallic surface such as aluminum  
foil behind the transparent target and repeat the measure-  
ment.  
Was the instrument's nosepiece in contact with the surface?  
Touch the nosepiece flush to the target's surface and repeat  
the measurement.  
If after applying all of the above solutions, the instrument's  
accuracy is still in question, contact Omega for further help.  
Chapter Six - OS950™ Specifications  
Target Temperature Range  
OS951 -50 to 550°F (-45 to 287°C)  
OS953 0 to 1000°C (-18 to 538°C)  
OS955 186 to 1207°F (86 to 653°C)  
OS956 186 to 1600°F (86 to 871°C)  
Linearity Error  
OS951  
OS953  
OS955  
OS956  
± 1% of reading  
±3% of reading  
±3% of reading  
±3% of reading  
Emissivity Error  
±1% of max. difference between target temperature and  
instrument temperature when touching, for emissivity of 0.8  
to 1.0  
Minimum spot size diameter  
Approx. 1/4" (6.4 mm)  
Repeatability  
± 0.1 °F/°C  
NIST Traceablity  
In AECS Mode  
Display Resolution  
0.1 °F or 0.1 °C  
9
 
Display Update  
10 times/second  
Measurement Response Time  
Approximately 0.1 seconds  
Field of View  
1:1 0.63" (15.9 mm) Diameter Spot Area in AECS Mode  
Spectral Sensitivity  
2 to 20 microns  
Battery  
One 9 volt  
Battery Life  
5000 readings (10 seconds each)  
Instrument Ambient Temperature  
Operating Range: 32 to 122°F (0 to 50°C)  
Storage Range: -22 to 140°F (-30 to 60°C)*  
*Extended storage at temperature extremes will reduce bat-  
tery life.  
10  
 
 
WARRANTY/DISCLAIMER  
OMEGA ENGINEERING, INC. warrants this unit to be free of defects in  
materials and workmanship for a period of 13 months from date of purchase.  
OMEGA’s 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 malfunctions, 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. OMEGA’s WARRANTY does not apply to defects resulting from  
any action of the purchaser, including but not limited to mishandling, improper  
interfacing, operation outside of design limits, improper repair, or  
unauthorized modification. This WARRANTY is VOID if the unit shows  
evidence of having been tampered with or shows evidence of having been  
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 are not  
warranted, including but not limited to contact points, fuses, and triacs.  
OMEGA is pleased to offer suggestions on the use of its various  
products. However, OMEGA neither assumes responsibility for any  
omissions or errors nor assumes liability for any damages that result  
from the use of its products in accordance with information provided by  
OMEGA, either verbal or written. OMEGA warrants only 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, EXPRESS 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.  
CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor  
shall it be used: (1) as a “Basic Component” under 10 CFR 21 (NRC), used in  
or with any nuclear installation or activity; or (2) in medical applications or  
used on humans. Should any Product(s) be used in or with any nuclear  
installation or activity, medical application, used on humans, or misused in  
any way, OMEGA assumes no responsibility as set forth in our basic  
WARRANTY / DISCLAIMER language, and, additionally, purchaser will  
indemnify OMEGA and hold OMEGA harmless from any liability or damage  
whatsoever arising out of the use of the Product(s) in such a manner.  
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,  
FOR NON-WARRANTY REPAIRS,  
please have the following information consult OMEGA for current repair  
available BEFORE contacting  
OMEGA:  
1. Purchase Order number under  
which the product was  
PURCHASED,  
charges. Have the following  
information available BEFORE  
contacting OMEGA:  
1. Purchase Order number to cover  
the COST of the repair,  
2. Model and serial number of the  
product under warranty, and  
2. Model and serial number of the  
product, and  
3. Repair instructions and/or specific 3. Repair instructions and/or specific  
problems relative to the product.  
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 2001 OMEGA ENGINEERING, INC. All rights reserved. This  
document may not be copied, photocopied, reproduced, translated, or  
reduced to any electronic medium or machine-readable form, in whole or in  
part, without the prior written consent of  
OMEGA ENGINEERING, INC.  
 
Where Do I Find Everything I Need  
for  
Process Measurement and Control?  
OMEGA…Of Course!  
TEMPERATURE  
Thermocouple, RTD & Thermistor Probes,  
Connectors, Panels & Assemblies  
Wire: Thermocouple, RTD & Thermistor  
Calibrators & Ice Point References  
Recorders, Controllers & Process Monitors  
Infrared Pyrometers  
PRESSURE, STRAIN AND FORCE  
Transducers & Strain Gages  
Load Cells & Pressure Gages  
Displacement Transducers  
Instrumentation & Accessories  
FLOW/LEVEL  
Rotameters, Gas Mass Flowmeters & Flow  
Computers  
Air Velocity Indicators  
Turbine/Paddlewheel Systems  
Totalizers & Batch Controllers  
pH/CONDUCTIVITY  
pH Electrodes, Testers & Accessories  
Benchtop/Laboratory Meters  
Controllers, Calibrators, Simulators & Pumps  
Industrial pH & Conductivity Equipment  
DATA ACQUISITION  
Data Acquisition & Engineering Software  
Communications-Based Acquisition Systems  
Plug-in Cards for Apple, IBM & Compatibles  
Datalogging Systems  
Recorders, Printers & Plotters  
HEATERS  
Heating Cable  
Cartridge & Strip Heaters  
Immersion & Band Heaters  
Flexible Heaters  
Laboratory Heaters  
ENVIRONMENTAL  
MONITORING AND CONTROL  
Metering & Control Instrumentation  
Refractometers  
Pumps & Tubing  
Air, Soil & Water Monitors  
Industrial Water & Wastewater Treatment  
pH, CoOnductivity & Dissolved Oxygen Instruments  
M3744/0801  
 

MTD Lawn Mower Series 54M User Manual
MTD Tiller 218 402 000 User Manual
Nesco Fryer DF 1241 User Manual
NETGEAR Switch JFS524E User Manual
Nikon Camera Flash SB 22 User Manual
Nortel Networks Cordless Telephone C4030 User Manual
NuTone Vacuum Cleaner CV554 User Manual
Palm Personal Computer Handbook User Manual
Panasonic Digital Camera DMC FX500 User Manual
ParaBody Home Gym PBF065 User Manual