When you receive the shipment, inspect the container and the equipment
for any signs of damage. Note any evidence of rough handling in transit.
Immediately report any damage to the shipping agent.
NOTE:
The carrier will not honor any damage claims unless all
the shipping materials are saved for inspection. After
examination and removal of contents, save packing material
and carton in the event that reshipment is necessary.
The following items are supplied in the box:
• The infrared transmitter, OS137A with the 1.82 m (6’) shielded cable.
• Two mounting nuts
• The User’s Guide
The following describes the ordering information:
OS137A – * – ** , where
- * means:
-1 : 0 to 100°C (32 to 212ºF) temperature range
-2 : -18 to 260ºC (0 to 500ºF) temperature range
-3 : -18 to 538°C (0 to 1000°F) temperature range
- ** means:
-MA : 4 to 20 mA current output
-V1 : 0 to 5 Vdc output
-V2 : 0 to 10 Vdc output
1
Page 6
Installation
-K : K type thermocouple output
-MVC : 10 mV/ºC output
-MVF : 10 mV/ºF output
For longer power/output cable, add suffix “xxFT” to the model part number.
The following table lists the optional accessories:
Accessories
Model No.
OS137-MB
OS137-WC
OS137-AP
OS137-LS
PSR-24S
CAL-3-IR
2.2 – Electrical Connection
The shielded cable provides the power and output connections. Connect
the body of the OS137A to Earth Ground. Leave the shield disconnected
and insulated at the end of the cable. Fig 2-1 shows the wiring diagram for
different analog outputs. Fig. 2-2 shows alarm output connections.
Description
Mounting Bracket
Water/Air Cooling Jacket with Built-in Air Purge Collar
Air Purge Collar
Laser Sighting
Regulated 24 VDC (400 mA) Power Supply
NIST Traceable Calibration
2
WARNING!
Connecting the Green alarm lead
to ground, or to any load exceeding
100mA, will result in damage to the
OS137A and void the warranty.
If the alarm output is not
being used, it must be left
disconnected and insulated
NOTE:
Apply DC power after making all the wiring connection
Figure 2-1. General Wiring Diagram
Figure 2-2. Alarm Output Wiring Diagram
2
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Introduction
3
SECTION 3 – OPERATION
3.1 – Measuring Temperature
Before starting to measure temperature, make sure the following check list is
met:
The power and output connections are made (Fig 2-1).
The target is larger than the optical field of view of the transmitter (Fig 3-1).
Use the Laser Sighting accessory (optional), to align the transmitter to the
center of the target area.
Remove the End Cap to get to the Emissivity Single Turn Pot (Fig. 3-2). Set
the Emissivity Pot based on the target surface. Then put back the End Cap.
Make sure the output load is within the product specification.
Figure 3-1. Optical Field of View
Figure 3-2. Location of Emissivity & Alarm Adjust and Alarm Switch
3
Page 8
Operation
3
3.2 – Ambient Temperature
The transmitter can operate in an ambient temperature of 0 to 70°C (32 to 158°F)
without any water cool jacket. It can operate from 0 to 200°C (32 to 392°F) with
the water cool jacket accessory, OS137-WC (Fig 3-6 & 3-7). It can operate up to
110°C (230°F) with air cooling.
There is a warm up period of 1 to 2 minutes after power up. After the warm up
period, temperature measurement can be made.
When the ambient temperature around the transmitter changes abruptly, the sensor head
goes through a thermal shock. It takes a certain amount of time for the sensor head to get
stabilized to the new ambient temperature. For example, it takes about 30 minutes for the
transmitter to stabilize from the 25°C to 50°C (77°F to 122°F) ambient temperature.
3.3 - Atmospheric Quality
Environments with smoke, dust, and fumes dirty up the optical lens, and cause
erroneous temperature readings. To keep the surface of the optical lens clean, the
air purge collar accessory is recommended, OS137-AP (Fig 3-4).
The following figures show the Mounting Bracket (OS137-MB), Air Purge Collar
(OS137-AP), Stainless Steel Housing and Water/Air Cool Jacket (OS137-WC),
with built-in air purge collar.
Figure 3-3. Mounting Bracket, OS137-MB
4
Page 9
3
Operation
Figure 3-4. Air Purge Collar, OS137-AP
Figure 3-5. Stainless Steel Housing
Figure 3-6. Water/Air Cool Jacket, OS137-WC
5
Page 10
3.3 - Atmospheric Quality
The unit provides 0-100% alarm setpoint adjustment. Here is an
example of an alarm setting:
• An OS137A-3-MA (4/20 mA output), the alarm is to be set at 204°C
(400°F) temperature.
• Connect the alarm output as shown in Fig. 2-2.
• Remove the End Cap to get to the Alarm Switch and the Alarm Adjust
(Fig. 3-2).
• Set the Slide Switch on the main board to the Alarm position (2).
• Measure the analog output, and adjust the Alarm Potentiometer
until the output reads 10.4 mA which is 40% (204°C, 400°F) of the
temperature range -18 to 538°C, (0 to 1000°F)
[10.4mA = 40 x (20-4) /100 + 4]
• Set the Alarm Slide Switch back to the Real Time position (1).
• If the temperature reading is below the alarm setpoint, the Alarm
Output stays low, otherwise it goes high (Alarm Condition).
• The Alarm Output can drive an external mechanical relay.
Operation
3
6
Page 11
Laser Sight Accessory
3
SECTION 4 - LASER SIGHT ACCESSORY
4.1 – Warnings and Caution
CAUTION:
You may receive harmful laser radiation exposure if you do
not adhere to the warnings listed below:
• USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF
PROCEDURES OTHER THAN THOSE SPECIFIED IN THIS GUIDE MAY
RESULT IN HAZARDOUS RADIATION EXPOSURE.
• DO NOT LOOK AT THE LASER BEAM COMING OUT OF THE LENS OR
VIEW IT DIRECTLY WITH OPTICAL INSTRUMENTS – EYE DAMAGE
CAN RESULT.
• USE EXTREME CAUTION WHEN OPERATING THE LASER SIGHT
ACCESSORY.
• NEVER POINT THE LASER ACCESSORY AT A PERSON.
• KEEP THE LASER SIGHT ACCESSORY OUT OF REACH OF ALL
CHILDREN.
Do not attempt to open the laser sight accessory. There are no
user serviceable parts inside.
4.1 – Warnings and Caution
The laser sight accessory screws onto the front of the transmitter sensor head.
This accessory is only used for alignment of the transmitter head to the target
area. After the alignment process, the accessory has to be removed from the
front of the transmitter head before temperature measurement is made.
The laser sight accessory is powered from a small, compact battery pack
(included with the accessory). Connect the battery pack to the accessory using
the cable provided. Aim at the target, and turn on the battery power using the
slide switch on the battery pack. Adjust the sensor head position so that the
laser beam points to the center of the target area. Turn off the battery pack,
and remove the laser sighting accessory from the sensor head (Fig 4-1).
7
WARNING:
Page 12
Laser Sight Accessory
Figure 4-1. Laser Sighting Accessory, OS137-LS
4
Figure 4-2. Laser Warning Label
8
Page 13
Specifications
5
SECTION 5 – SPECIFICATIONS
5.1 - General
Temperature Range:
OS137A-1 0 to 100ºC (32 to 212ºF)
OS137A-2 -18 to 260ºC (0 to 500ºF)
OS137A-3 -18 to 538°C (0 to 1000°F)
Accuracy:
OS137A-1, OS137-2 3% of Rdg or 4.4°C (8°F) whichever is greater
OS137A-3 3% of Rdg or 5.5°C (10°F) whichever is greater
Repeatability: 1% of Rdg or 1.0ºC (2.0ºF) whichever is greater
Field of View: 10 to 1
Spectral Response: 5.5 to 14 microns
Response Time: 150 msec, 0 to 63% of final value
Emissivity: 0.5 to 1.0, adjustable via Single Turn Pot
Alarm Output: Voltage, 100 mA Drive
Alarm Set Point: 0 to 100% Adj., set via Pot
Analog output:
MA 4 to 20 mA
V1 0 to 5 Vdc
V2 0 to 10 Vdc
K K type thermocouple, compensated
MVC 10 mV/ºC
MVF 10 mV/ºF
Output Load Requirements:
Min. Load (0 to 5 Vdc) 1 K-Ohms
Min. Load (0 to 10 Vdc) 1 K-Ohms
Max. Load (4 to 20 mA) (Power Supply – 4)/20 mA
Min. Load (10 mV/Deg) 1 K-Ohms
Min. Load (K T/C) 10 K-Ohms
Operating Ambient Temperature:
No Water Cooling 0 to 70ºC (32 to 158ºF)
With Water Cooling (OS136-WC) 0 to 200ºC (32 to 392ºF)
With Air Cooling (OS136-WC) 0 to 110°C (32 to 230°F)
Operating Relative Humidity: Less than 95% RH, non-condensing
Water Flow Rate for OS136-WC: 0.25 GPM, room temperature, minimum
Air Flow Rate for OS136-WC 5 CFM (2.4 liters/sec)
Warm up Period: 1 to 2 minutes
Thermal Shock: About 30 minutes for 25ºC (77°F) abrupt
ambient temperature change
Air Flow Rate for Air Purge Collar 1 CFM (0.5 liters/sec.)
Transmitter Housing: Stainless Steel 316, NEMA-4 & IP65 rated
Power: 12 to 24 VDC @ 50 mA
Dimensions: 25.4 OD x 127 L mm (1.0” OD x 5.0” L)
Weight: 0.80 lb (363 g)
9
Page 14
Specifications
5.2 - Laser Sight Accessory
Laser Wavelength (Color): 630 - 670 nm (red)
Operating Distance: Up to 9.1 m (30 ft)
Max. Laser Power Output: Less than 1 mW @ 22ºC (72°F) ambient
European Classification: Class 2, EN60825-1/11.2001
FDA Classification: Class II Laser Product. Complies with
21 CFR 1040.10
Laser Beam Diameter: Less than 5 mm
Beam Divergence: Less than 2 mrad
Operating Temperature: 0 to 50°C (32 to 122°F)
Operating Relative Humidity: Less than 95% RH, non-condensing
Power Switch: ON/OFF, Slide Switch on the battery pack
Power Indicator: Red LED
Power: Battery pack, 3 VDC
Caution & Certification Label: Located on the head sight circumference
Identification Label: Located on the head sight circumference
Aperture Label: Located on the head sight circumference
The information contained in this document is believed to be correct, but OMEGA accepts no liability for any
errors it contains, and reserves the right to alter specifications without notice.
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 productwarranty 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 in which wear is not
warranted, include but are not limited to contact points, fuses, and triacs.
WARRANTY/DISCLAIMER
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 the company 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.
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, please have the following
information available BEFORE contacting OMEGA:
1. Purchase Order number under which the product was
PURCHASED,
2. M odel and serial number of the product under warranty,
and
3. Repair instructions and/or specific problems relative to
the product.
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