Omega Products OML-RM Installation Manual

User’s Guide

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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 applications.

OML Series
Operating Manual

1. Page 8, 3.0 Operation

The jumpers are not active. The units are only being supplied with the address settings being installed at the factory
in firmware. We anticipate a software upgrade to allow the address settings to be user configurable. This should be

complete second quarter 2003.

2. Page 8, 3.1 Setting the OML-RM and OML-TM Addresses

Do not attempt to alter the address settings with the jumpers. See 1. above.

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Read First, Important Changes

Errata Sheet For: OML Operating Manual M-3923/0303

Errata date November 2002

M-3923/0303 • Page 3

M-3923/0303 • Page 4

Safety and License-free Operation

The OmegaLynx modules can be safely operated when the instructions in this manual are carefully followed. This
section summarizes the safety considerations. Reminders, in the form described below, will appear in the detailed
instructions to assure operator awareness of these safety considerations. Qualified personnel should install and
maintain the OmegaLynx modules only after becoming thoroughly familiar with this manual.

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WARNING: This symbol is used in the instruction manual where the safety of the operator

must be considered. The instruction manual should be consulted and read carefully.

CAUTION: This symbol is used when caution is needed to prevent damage to equipment. It

is used where careful attention to certain procedures described in the instruction
manual is needed. This symbol is also used to emphasize procedures other than
normal operating procedures.

OML Series

Operating Manual

SAFETY SUMMARY

WARNING: TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS EQUIPMENT

TO RAIN OR MOISTURE.

1. Make sure that the OML-series module is securely mounted to the DIN rail.

2. Disconnect the power to the module before connecting or disconnecting sensor or system wiring.

3. To reduce the risk of electric shock, do not attempt repairs to module. No user-serviceable parts are inside. Refer all
servicing issues to Omega Engineering, Inc.

4. Do not attempt to operate a module without the protective case secured.

5. All wiring must be connected to the module before electrical power is connected. Inspect for frayed or cut cables
prior to operation.

6. Do not expose this equipment to rain or moisture.

7. All wiring and connections must follow the National Electric Code and local electrical codes.

8. Use common sense and avoid haste!

9. Review Specification in Appendix for suitability of use.

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Operating Manual

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WARNING: In order to comply with FCC RF Exposure requirements, this device must

be installed in such a way as to insure a minimum separation distance of 20
cm between the antenna and all persons, during normal operation.

WARNING: If the FCC ID is not visible when this unit is installed inside another

device, then the outside of the device into which the module is installed
must also display a label referring to the enclosed module. A sample label
has been provided below. This label should be clearly legible and contain
the text that reads:

Contains Transmitter Module

FCC ID: QAQBLM-0301-1

M-3923/0303 • Page 5

LICENSE-FREE OPERATION

WARNING: The user has the privilege of operating this equipment without obtaining a

license from the Federal Communication Commission (FCC) providing the user
makes no changes or modifications to the OML-series modules. Changes to the
modules not authorized by Omega Engineering, Inc. could void the user’s authority
to operate the OML-series modules without a site-specific FCC license.

NOTE: This equipment has been tested and found to comply with the limits for a Class A digital

device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated in
a commercial environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case
the user will be required to correct the interference at his own expense.

M-3923/0303 • Page 6

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OML Series

Operating Manual

OML Series
Operating Manual

Safety and License-free Operation...............................................................................................2

SAFETY SUMMARY ..................................................................................................................................................... 2

LICENSE-FREE OPERATION ...................................................................................................................................... 3

1.0 Product Description ................................................................................................................ 6

2.0 Installation .............................................................................................................................. 6

2.1 Mounting ......................................................................................................................................................... 6

2.1.1 Installation and Removal ....................................................................................................................... 6

2.1.2 Location ................................................................................................................................................. 6

2.2 Interface Connections ..................................................................................................................................... 7

3.0 Operation ................................................................................................................................ 9

3.1 Setting the OML-RM and OML-TM addresses .............................................................................................. 9

3.2 Powering the OML-RM and OML-TM ......................................................................................................... 10

3.3 Verifying operation ....................................................................................................................................... 10

3.4 Establishing Communication ........................................................................................................................ 10

3.5 Communication Failure ................................................................................................................................10

4.0 Maintenance ......................................................................................................................... 10

Appendix A: ................................................................................................................................. 11

OML-TM Module Terminal Definitions ............................................................................................................. 12

OML-RM Module Terminal Definitions ............................................................................................................. 12

OML-RM Module Terminal Definitions and Wiring ......................................................................................... 13

OML-TM Module Terminal Definitions and Wiring .......................................................................................... 13

OML Series Specifications ................................................................................................................................. 14

Appendix B: CE markings, EMC compatibility ......................................................................... 15

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Contents

M-3923/0303 • Page 7

M-3923/0303 • Page 8

1.0 Product Description

The OmegaLynx® OML-series of modules are designed to allow extension
of process control loop instrumentation using a Radio Frequency link. The
wireless receiver and transmitter modules use the Bluetooth™ wireless
technology operating in the 2.4 GigaHertz (GHz) license-free band.
Bluetooth™ allows wireless data communication up to 100 meters within
typical factory environments. The transmitter and receiver modules
communicate using frequency hopping spread spectrum communication.

Transmitter and receiver modules are available with four (4) channels of 4-20
mA or 1 to 5 Volt process loop data. The user process data transmission is
unidirectional, i.e. - a transmitter/receiver pair sends all data in one direction
only. Consequently, the transmitter module is the data input module,
connecting to the 4-20 mA loop sensors, and the receiver module is the data
output module, connecting to the process control loop instrumentation
equipment input channels. The transmitter module samples each channel 10
times per second.

The modules have seventeen (17) terminals arranged in three terminal blocks.
Each data channel has three (3) connections, the power input uses three (3)
terminals, and (2) connections are a set of dry contacts (normally open) that
will close upon a communication link failure. The input and output channels
are unipolar. The signal input range is from zero (0) volts to positive 5 volts,
full scale, on the transmitter module and 4 milliamperes to 20 milliamperes on
the receiver module. Each module has an RF connector for the antenna and
three Light Emitting Diode (LED) indicators.

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Figure 1: Side View OML

OML Series

Operating Manual

2.0 Installation

2.1 Mounting

2.1.1 Installation and Removal

The OML-series OmegaLynx® modules mount to standard 35 mm DIN rail
mounts. The module base has a spring-loaded snap-in mount. To mount the
module place the fixed end of the mounting over the DIN rail and, using a
screwdriver blade, gently pull the spring-loaded clip of the module down
until it locks into place. Since the module has two clips, each must be locked
into place.

To remove the module, simply use a screwdriver blade to release the spring­loaded clip of each mount of the module. See figure 3.

2.1.2 Location

The OML-series OmegaLynx® modules will not function correctly when
mounted within steel, aluminum, or other electrically conductive boxes. The
modules are radio transmitters and receivers and, as such, the antenna must
be located where the radio signals can propagate to other modules. This can
be accomplished through using electrically nonconductive boxes or locating
the antenna at a distance from the module. When two or more modules are
located in redundant proximity to one another, the antennas of the module
must be spaced at least 8 inches (20 cm) apart.

Figure 2: Front View OML

Figure 3: OML Rear View showing

DIN rail clips with screwdriver

release slots at the bottom

OML Series
Operating Manual

Figure 4: Mounting Locations

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Ideally, the transmitter and receiver modules should be located within a
direct line-of-sight view of each other. However, they can function well as
long as there are no reinforced concrete or solid metal walls between the
modules. The modules will be able communicate even if there are machines
located between the modules so long as there are no solid conductive walls
between the modules. If the modules are separated by walls of reinforced
concrete or steel, data transmission cannot be guaranteed. See figure 4.

The OML-TM and OML-RM must be located no more than 100 meters
from each other. The ground connections for each module are not required
to be common. Each module may have its own grounding path independent
of the other module, so long as each is grounded.

This unit is designed and tested for a “pollution degree 2” environment and
classed as installation overvoltage category II.

WARNING: To avoid human exposure to potentially harmful levels of

radio frequencies, the module antenna should be located at
least seven (7) feet above floor level.

2.2 Interface Connections

The terminal definitions for the OML-TM and the OML-RM are the same.
Each module has seventeen (17) terminal connections. Each of the (4)
channels have three (3) terminal connections, the communication failure dry
relay contacts use two (2) terminal connections, and the power uses three (3)
terminal connections. The appendix to this manual provides a detailed
description of the terminal definitions.

M-3923/0303 • Page 9

All wiring for 4-20 mA loops are uni-polar, that is, all voltages are entirely
positive with respect to the ground reference. The negative termination
serves as the circuit common (or low side) of the circuit. The shield terminal
is coupled to the module ground reference (- 24 VDC). The shield of the
system wiring, whether for the transmitter or receiver, should always be
connected at the module shield terminal to minimize spurious RF signal
radiation.

CAUTION: Precautions must be taken to avoid generating a ground

loop in the receiver wiring since the internal module
connection of the shield outputs in the receiver module is
coupled to the module negative power (-24 VDC)
connection. Failure to avoid ground loops will result in
erroneous or noisy signals.

The modules require a 12 VDC to 27.5 VDC, 24VDC nominal, power
source capable of 275mA. Power supply ripple should be less than 200 mV
peak-to-peak. The power supply unit should be a direct plug-in marked
“CLASS 2” rated for 275 mA. The connection between the power source
and the module must not exceed 10 feet (3 meters). Module power is
applied through the (+) and (-) terminals of the power connection on J3.

The Omega model U24Y101 is suitable.

M-3923/0303 • Page 10

Note: The earth (ground) connection should be connected to provide

2.2.1 Transmitter Module OML-TM

The OML-TM connects to the field sensor wiring. This module allows up to
four (4) 4-20 mA sensors or 0 to 5 Volt sensors to connect to the module.
Whether a particular channel is set for 4-20 mA loop sensors or 1-5 Volt
sensors is determined by a user-accessible jumper. Each channel operates
independently and can be individually wired for either 4-20 mA loop or 0 to
5 Volt sensor wiring. The jumper inserts the 250-ohm resistor when the input
will be defined as a 4-20 mA loop current. If the input will be a 0 to 5 Volt
signal, the jumper must be removed. Accessing the jumpers is explained in
the appendix to this manual.

The input to the transmitter module is actually a 0 to 5 Volt signal. The
resistor operates to convert the loop current of 4 to 20 mA into 1 to 5 Volts
by the operation of Ohm’s Law. That is also why 1 to 5 Volt sensors can be
directly connected to the input terminals when the jumper is not installed.

CAUTION: The module is shipped from Omega with all jumpers

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an earth path.

installed (4-20 mA loop operation). If 0-5 Volt operation is
desired, the jumpers must be removed.

OML Series

Operating Manual

Accessing the jumpers is explained in the appendix to this manual. The
jumpers are defined as: JP6 - Channel 1, JP7 - Channel 2, JP8 - Channel 3,
and JP9 - Channel 4.

The module antenna should be adjusted so as to be in a vertical position and
no more than 4 foot-pounds of torque should be used to tighten the non­standard FCC compliant SMA antenna connector on the front panel of the
OML-Series module.

2.2.2 Receiver Module OML-RM

The OML-RM connects to the receiving instrument Programmable Logic
Controller (PLC) or Distributed Control System (DCS) wiring. This module
allows the four (4) outputs to connect to the PLC or DCS. Each channel
operates independently and is wired for 4-20 mA loop current output.
Vo ltage outputs can be achieved using externally installed 250 ohm resistors.

Each channel jumper bypasses the coupling capacitor used for RF bypass
operation and makes the shield output connection connect directly to the
chassis ground of the OML-RM module. Removing the jumpers allows the
shield to be AC coupled for an RF path, but not have a low frequency DC
ground loop. Accessing the jumpers is explained in the appendix to this
manual.

The jumpers are defined as: JP4 - Channel 1, JP5 - Channel 2, JP6 - Channel
3, and JP7 - Channel 4.

The output of the receiver module is a 4 to 20 mA signal referenced to the
power supply “-” (minus) input. If power is obtained from the DCS/PLC
system, care must be taken to provide a short low-ohmic path between the
module negative supply terminal and the ground terminal of the DCS/PLC
system. Failure to do so will likely result in noise in the 4-20 mA input of the
DCS/PLC.

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The module antenna should be adjusted so as to be in a vertical position and
no more than 4 foot-pounds of torque should be used to tighten the non­standard FCC compliant SMA antenna connector on the front panel of the
OML-Series module.

3.0 Operation

The OML-TM and OML-RM modules are shipped with a “default” address
by Omega Engineering, Inc. to enable communication with each other. The
Bluetooth™ communication protocol uses a frequency hopping spread
spectrum technique operating in the 2.4 GHz ISM band. The spread
spectrum technique used by the OmegaLynx modules requires the OML-RM
and OML-TM to hop frequencies at the same time and in the same sequence
to maintain communication. Any module pair must use the same address
setting, otherwise no communication between them will occur. The appendix
to this manual shows drawings that identify the location of the eight (8)
address jumpers. The least significant address jumper is illustrated with
“LSB” and is located toward the front of the module.

The OML-TM and OML-RM in a pair must be set to the same address and
that address must be unique. That is, no two module sets must have the same
address jumper settings.

M-3923/0303 • Page 11

CAUTION: Failing to observe the precaution of setting module

addresses to different values in the same facility, will result in
erroneous data.

The modules are certified by the Federal Communication Commission for
operation in the 2.4 GHz band without the need for an operator license.

3.1 Setting the OML-RM and OML-TM addresses

The OML-RM receiver and OML-TM transmitter modules are shipped from
Omega Engineering with “default” addresses set in the modules. It is
necessary for the OML-RM receiver and OML-TM transmitter module pair
to have the same address setting. It is also important that no other OML-RM
receiver and OML-TM transmitter module pairs have the same address. The
cover panel can be removed by the user to access the jumpers used to set the
module address. See the Appendix for instructions regarding accessing the
interior of the modules.

WARNING: Do not make changes to the jumper settings while power

is connected to the module. Disconnect all power before
attempting jumper setting changes.

The address jumper area has eight (8) sets of jumper pins allowing up to 256
possible address settings. Both modules in a pair must have their jumpers set
exactly the same for proper data communication. Any setting may be used
provided it is not the same as any other module pair installed within 1,000
meters.

M-3923/0303 • Page 12

CAUTION: No module pairs may have the same address setting as any

3.2 Powering the OML-RM and OML-TM

The OML-RM receiver and OML-TM transmitter modules will power up
immediately upon application of DC power to the power input terminals of
the modules. The green LED on the panel will illuminate whenever the 24
VDC power is connected. The powering voltage must be between 12 and

27.5 Volts DC.

3.3 Verifying operation

After power is applied to the module the internal digital processor will verify
proper module operation and extinguish the red LED. If the red LED
illuminates it means the processor has detected a fault condition. In case of a
fault condition, check the module power and RF connection to the antenna.
For additional assistance, contact Omega Engineering Customer Service. If
any OML-TM signal input falls outside the normal operating range of 3.6 mA
to 22 mA (0.9 Volt to 5.5 Volt) the red LED on the front panel of both the
OML-TM and OML-RM will flash approximately once per second (1 Hz).

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other module pairs installed within 1,000 meters. Setting
other nearby pairs to the same address can result in
communication of data to the wrong module receiver.

OML Series

Operating Manual

3.4 Establishing Communication

Once power is applied, assuming the module is operating correctly, it will
transmit a signal to synchronize with its factory programmed counterpart
unit. There are three flashing sequences of the Blue “DATA” LED used to
indicate the status of the communication link:

LED very fast flashing (30 Hz). Indicates attempting linking activity.
LED steady flashing (10 Hz). Indicates normal communication of data packets.
LED off. Indicates the communication link has been lost.

3.5 Communication Failure

If the communication channel between units is interrupted for any reason,
after one minute the red “COMM FAIL” LED on the front of the unit will
illuminate to indicate a communication link failure. If the event that caused
the failure clears, the units will automatically reestablish the communication
link. In the event the units cannot reestablish the communication link within
60 seconds, the dry contacts of the “COMM FAIL” relay will close, and the
units will continue to attempt to reestablish the communication link. The
contacts will open if the units succeed in establishing the link.

OML Series
Operating Manual

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4.0 Maintenance

The OML-Series modules contain no user serviceable or operator replaceable
parts. No maintenance should be attempted by the user. Opening the module and
attempting any maintenance will void the user warranty and the Federal
Communication Commission (FCC) certification.

Access to the OML-Series of modules is limited to the jumper plugs for setting
channel configurations and module addresses.

There are no cleaning, cooling, or ventilation requirements for the OML-Series
modules.

M-3923/0303 • Page 13

M-3923/0303 • Page 14

Appendix A:

Accessing the OML internal jumper positions

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OML Series

Operating Manual

Figure A-1

Lay the module on a clean surface with the right side of the module facing up, as shown above.

Using a Philips head screwdriver, remove the screws holding the DIN rail mounting clips from the rear of the module.
Note there are retaining screws that are accessible through the round holes of the spring loaded DIN retaining clips.
These screws must also be removed. A total of four screws will have been removed.”

When the mounting base has been removed, the right side cover can be removed by sliding it to the rear of the case.
The Transmitter Module (OML-TM) has internal jumpers located in different positions than the Receiver Module

(OML-RM).

Figure A-2: OML-TM Transmitter Module Figure A-3: OML-RM Reciver Module

The transmitter module jumpers determine whether any particular channel is defined as a 4-20 mA input or a 0 to 5 Volt
input. When the jumpers are installed, that channel will be a 4-20 mA input.

The receiver module jumpers determine whether a particular channel shield connection will be AC coupled to ground
or DC coupled to ground. The AC coupling is through a 0.01 microFarad capacitor for RF coupling. When the
jumpers are installed, that channel will be DC coupled.

OML Series
Operating Manual

OML-TM Module T erminal Definitions

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M-3923/0303 • Page 15

J1 and J3 are on the top of the OML modules, while J2 is on the bottom of the module. For each of the OML-TM
transmitter channels, a 24 VDC connection is available for powering the 4-20 mA loop sensors.

OML-RM Module T erminal Definitions

J1 and J3 are on the top of the OML modules, while J2 is on the bottom of the module. For each of the OML-RM
receiver channels, a ground connection is available for the shield of the loop wiring.

M-3923/0303 • Page 16

OML-RM Module Terminal Definitions and W iring

The output of the OML-RM can be configured for either a 4-20 mA current loop or a 1-5 volt voltage output. To
convert the 4-20 mA loop current to a 1-5 volt signal, a 250 ohm resistor must be placed across the wiring of the
output loop current. This resistor may be placed across either the module output terminals or the input terminals of
the measurement system.

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OML Series

Operating Manual

OML-TM Module Terminal Definitions and W iring

The transmitter module will be wired differently depending on whether the sensor is a 4-20 mA unit or 1-5 volt unit.
The diagram below illustrates the wiring for each type of sensor.

OML Series
Operating Manual

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OML Series Specifications

SPECIFICATIONS OML TRANSMITTER OML RECEIVER

M-3923/0303 • Page 17

WIRELESS TRANSMISSION

Technology Platform Bluetooth

™

Bluetooth

™

Modulation Frequency Hopping Spread Spectrum Frequency Hopping Spread Spectrum
Radio Frequency 2.4GHz license-free band 2.4GHz license-free band
Communication Range 100 Meters 100 Meters
Output Power +20 dBm / 100 mW +20 dBm / 100 mW
Number of Channels Four Four

ELECTRICAL

Power Requirements
Voltage Requirements (Class 2) 24 VDC (12 - 27.5 VDC) 24 VDC (12 - 27.5 VDC)
Current Requirements (Class 2) 275 mA (max) 275 mA (max)
Power Supply to 24 VDC n/a
4-20mA Sensor
Data Resolution 16-bit 16-bit
Signal Bandwidth 10 Samples per second 10 Samples per second
Input Signal (jumper configuratble) Four Radio Frequency Signal

4-20mA (250
1-5 VDC (50K

Ω input impedance)/

Ω input impedance)

Output Signal Radio Frequency Signal 4-20mA signal

(Max 750Ω load)

LED Indicators Power - Green Power - Green

Data - Blue Data - Blue

Comm Fail - Red Comm Fail - Red

ENVIRONMENTAL

Operating Temperature 0 - 50°C (32 to 122°F) 0 - 50°C (32 to 122°F)
Humidity 5% to 90% non-condensing 5% to 90% non-condensing
Pollution Degree 2 Degree 2
Installation Overvoltage Category 2 Category 2

PHYSICAL

Dimensions (H x L x W) 5.8” x 4.5” x 1.7” 5.8” x 4.5” x 1.7”

(14.7cm x 11.4cm x 4.3cm) (14.7cm x 11.4cm x 4.3cm)
Weight 0.8 lbs. (0.37kg) 0.8 lbs. (0.37kg)
Connector Screw Terminal Screw Terminal
Mounting DIN-Rail DIN-Rail

M-3923/0303 • Page 18

Appendix B: CE markings, EMC compatibility

As of February 2002, French CE standards for EMC (Electro-Magnetic Compatibility) are NOT harmonized with the
Current 15 EU Member States.

Current Countries Recognizing CE Mark:
EU 15 Member states:
Austria (became member in 1995), Belgium (Founder Member in 1957), Denmark (1973), Finland (1995), France

(FM 1957), Germany (FM 1957), Greece (1981), Ireland (1973), Italy (FM 1957), Luxembourg (FM 1957), the
Netherlands (FM 1957), Portugal (1986), Spain (1986), Sweden (1995) and United Kingdom (Great Britain)(1973).

Candidate States:
Some are requiring CE Marks. Check with Appropriate agencies for details regarding use in country in question .
CE Marking and EU/EFTA
The 15 EU Member states legally require CE-Marking. The European Free Trade Association (EFTA*) countries,

with the exception of Switzerland, also enforce CE-Marking. The 12 European countries on application to become
EU Member states have started to adopt the CE-Marking requirements to ensure that their products can freely move
throughout the EU member States in the future. Check with Appropriate agencies for details regarding use in country
in question.
*-Iceland, Liechtenstein, Norway and Switzerland are EFTA countries

○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○○

OML Series

Operating Manual

Note: France is not completely harmonized in frequency allocation for the standard ISM band this

product utilizes from 2402 MHz to 2480 MHz.

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 W
following information available BEFORE
contacting OMEGA:

1. Purchase Order number under which the product

2. Model and serial number of the product under

3. Repair instructions and/or specific problems

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 2002 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.

ARRANTY RETURNS, please have the

was PURCHASED,
warranty, and
relative to the product.

FOR NON-WARRANTY REPAIRS,
for current repair 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, and

3. Repair instructions and/or specific problems
relative to the product.

consult OMEGA

Where Do I Find Everything I Need for

Process Measurement and Contr ol?

OMEGA…Of Course!

Shop online at www.omega.com

TEMPERA TURE

䡺⻬

Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies

䡺⻬

Wire: Thermocouple, RTD & Thermistor

䡺⻬

Calibrators & Ice Point References

䡺⻬

Recorders, Controllers & Process Monitors

䡺⻬

Infrared Pyrometers

PRESSURE, STRAIN AND FORCE

䡺⻬

Transducers & Strain Gages

䡺⻬

Load Cells & Pressure Gages

䡺⻬

Displacement Transducers

䡺⻬

Instrumentation & Accessories

FLOW/LEVEL

䡺⻬

Rotameters, Gas Mass Flowmeters & Flow Computers

䡺⻬

Air Velocity Indicators

䡺⻬

Turbine/Paddlewheel Systems

䡺⻬

Totalizers & Batch Controllers

pH/CONDUCTIVITY

䡺⻬

pH Electrodes, Testers & Accessories

䡺⻬

Benchtop/Laboratory Meters

䡺⻬

Controllers, Calibrators, Simulators & Pumps

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Industrial pH & Conductivity Equipment

DA TA ACQUISITION

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Data Acquisition & Engineering Software

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Communications-Based Acquisition Systems

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Plug-in Cards for Apple, IBM & Compatibles

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Datalogging Systems

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Recorders, Printers & Plotters

HEA TERS

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Heating Cable

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Cartridge & Strip Heaters

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ENVIRONMENT AL
MONITORING AND CONTROL

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Air, Soil & Water Monitors

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Industrial Water & Wastewater Treatment

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pH, Conductivity & Dissolved Oxygen Instruments

M-3923/0303