Omega OM2-163 User guide

7IAH\I /KE@A

®

An OMEGA Technologies Company

www.omega.com

e-mail:[email protected]

OM2-163 Bridgesensor

®

Internet e-mailInternet e-mail

Internet e-mail

Internet e-mailInternet e-mail

[email protected][email protected]

[email protected]

[email protected][email protected]

OMEGAnetOMEGAnet

OMEGAnet

OMEGAnetOMEGAnet

http://wwwhttp://www

http://www

http://wwwhttp://www

omega.com

®®

®

®®

On-Line Service On-Line Service

On-Line Service

On-Line Service On-Line Service

.omega.com.omega.com

.omega.com

.omega.com.omega.com

®

Servicing North America:

USA:USA:

USA:

USA:USA:

ISO 9001 Certified Stamford, CT 06907-0047

Canada:Canada:

Canada:

Canada:Canada:

One Omega Drive, Box 4047

Tel: [phone] FAX: [phone]
e-mail: [email protected]

976 Bergar
Laval (Quebec) H7L 5A1
Tel: [phone] FAX: [phone]
e-mail: [email protected]

For immediate technical or application assistance:

USA and Canada:USA and Canada:

USA and Canada: Sales Service: 1-800-826-6342 / 1-800-TC-OMEGASM

USA and Canada:USA and Canada:

Customer Service: 1-800-622-2378 / 1-800-622-BESTSM
Engineering Service: 1-800-872-9436 / 1-800-USA-WHENSM
TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA

Mexico andMexico and

Mexico and

Mexico andMexico and
Latin America:Latin America:

Latin America: Tel: [phone] FAX: [phone]

Latin America:Latin America:

En Español: (95) 203-359-7803 e-mail: [email protected]

Servicing Europe:

Benelux:Benelux:

Benelux: Postbus 8034, 1180 LA Amstelveen, The Netherlands

Benelux:Benelux:

Tel: [phone] FAX: [phone]
Toll Free in Benelux: 0800 0993344
e-mail: [email protected]

Czech Republic:Czech Republic:

Czech Republic: ul. Rude armady 1868, 733 01 Karvina-Hranice

Czech Republic:Czech Republic:

Tel: [phone] FAX: [phone]
Toll Free: 0800-1-66342
e-mail: [email protected]

France:France:

France: 9, rue Denis Papin, 78190 Trappes

France:France:

Tel: [phone] FAX: [phone]
Toll Free in France: 0800-4-06342
e-mail: [email protected]

Germany/Austria:Germany/Austria:

Germany/Austria: Daimlerstrasse 26, D-75392 Deckenpfronn, Germany

Germany/Austria:Germany/Austria:

Tel: [phone] FAX: [phone]
Toll Free in Germany: 0130 11 21 66
e-mail: [email protected]

United Kingdom:United Kingdom:

United Kingdom: One Omega Drive, River Bend T echnology Centr e

United Kingdom:United Kingdom:

ISO 9002 Certified Northbank, Irlam, Manchester

M44 5EX, England
Tel: [phone] FAX: [phone]
Toll Free in the United Kingdom: 0800-488-488
e-mail: [email protected]

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.

WW

ARNINGARNING

W

ARNING: These products are not designed for use in, and should not be used for, patient-connected applications.

WW

ARNINGARNING

Description

The OMEGA OM2-163 Bridgesensor is a complete signal
conditioning system on a card designed expressly for single
half, or full bridge transducers. The OM2-163 consists of a
high performance instrumentation amplifier, a user adjustable
active filter, high stability bridge supply and all of the required
circuitry, trimpots, etc., so that only point to point wiring need
be made to the inputs, outputs and power to have a complete
signal conditioning system up and running.

The mounting kit provides coarse and fine gain adjustment
trimpots along with input and output offset adjustments, DIP
switches for setting the bridge supply output and active low
pass filter cutoff frequency. Provisions are also provided to
mount a quarter bridge completion resistor and a calibration
resistor which can be wired to an external CAL switch. Two
close tracking 1/2 bridge completion resistors are also included.

Application of the OM2-163 is easy by following the detailed
applications information that is included with this data sheet
and full engineering specifications allow easy and complete
worst case analysis.

OM2-163 vs OM2-165

The Model OM2-163 is a pin compatible replacement for the
Model OM2-165 which is no longer available. The one major
difference is that the OM2-163 does not have a reference
voltage on pin J. Pin J is connected to COM, pins B and 2. The
OM2-163 also has a high frequency input filter to reduce EMI.
This filter has a high frequency cutoff above 200KHz which is
well above the requirements of weighing systems. See
figure 3 OM2-163 INPUT AMP RESPONSE. The output of the

Features

n

Pin for Pin Replacement for Model OM2-165

n

Compact, complete and convenient to use

n

Easy access to all trim adjustments

n

Simplifies Single and Half Bridge Applications

n

On card Bridge Balance Trimpot eliminates
additional wiring for Three Wire applications

n

Changing Bridge supply voltage is easy using
on board trimpot with adjustment range from
+4 to +10 VDC

n

Bridge supply lead resistance effects can be
ignored with built-in remote sensing

n

Filter frequency can be changed with the flick
of a DIP switch

instrumentation amplifier, pin P, is not inverted with respect to
the Filter Output as it was in the OM2-165. The OUTPUT
OFFSET pot, RP1, is disabled by a jumper, J5, which must be
removed to use RP1. The external OUTPUT OFFSET input,
pin K, is always active.
Applications using the OM2-165 can use the OM2-163 simply
by inserting the board and making the typical zero and span
adjustments. No wiring changes should be required.

+15V

COM

15V

+SENSE

CALIBRATION

SWITCH

COM

OUTPUT
OFFSET

INPUT

+INPUT

FILTER OUT

AMP OUT

1/2 BRIDGE

COMPLETION

A
B
C
D
E

NC

F
H

J
K
L

M
N

P

R

S

ST3 ST4

1/4 BRIDGE

COMPLETION

RESISTOR

KEY

1
2
3
4
5
6
7
8

9
10
11
12
13
14
15

J2

+EXCITATION

NC

CALIBRATION

RESISTOR

ST1 ST2

NC

SENSE

NC

BRIDGE
BALANCE

+SENSE

R18

56.2K

SENSE

OM2-163 Block Diagram

+SENSE

SENSE

J4

SW-1

BRIDGE

EXCITATION

SUPPLY

TP1

J1

+EXCITATION

EXCITATION

J3

RP6
BRIDGE
BALANCE

10K

10K

RP2 BRIDGE SUPPLY

ADJUST

RP3 INPUT OFFSET



+

RG

RP4

R6

FINE

196

20

GAIN

RP5

COARSE

1K

TP2

AMP OUT

REMOVE J1 TO ADJUST OUTPUT
OFFSET, RP1

RX1

X2 GAIN FILTER AMPLIFIER

100

SW2

SW4

CX2

.022µF

.22µF

SW3

SW5

RX2

CX1

J5

TP4

TP3

.22µF

.022µF

FILTER OUT

RP1
OUTPUT
OFFSET

27K

FIGURE 1. Complete block diagram of the OM2-163 Bridgesensor

!

Specifications

Conditions (Unless Noted): Ta = 25°C, Vs = ±15 VDC, G = 500 V/V

retemaraPmuminiMlacipyTmumixaMstinU

)1(reifilpmA

egnaRniaG)2(elbatsujdA

noitauqEniaG )2-G(/000,001=gRsmho

erutarepmeTniaG

tneiciffeoC

)3(tfirDpumraW 1±5±Vµ

tesffOtupnI

:erutarepmeT.sVV/V2=G

ylppuSrewoP.sV 1±5±V/Vµ

)4(tnerruCsaiBtupnI

erutarepmeT.sV

tnerruCtesffOtupnI

erutarepmeT.sV

)5(ecnadepmItupnI Fµ7400.||smhoG4

edoMnommoC

:egatloVtupnI

:)6(RMC

:egatloVesioNtupnI

:tnerruCzH01-zH1.0 08P-PAp

:tuptuOdetaR

:)9(retliFssaPwoL

tnerruCtuptuO 0021Am

InoitalugeRdaoL

L

:)11(ytilibatS

ycaruccAlaitinI %1.0%

gnikcarTerutarepmeT 5C°/mpp

:egatloV

)21(tnerruC ±21Am

latnemnorivnE

:tneibmA

gniwStuptuOV01±,ytiraenilnoN

tuptuOdnatupnI,egatloVtesffO oreZotelbatsujdA

egnaRtsujdAtesffOtuptuO ±01V

:)8(esnopseRcimanyD

:egnaRtnemtsujdAtuptuOtopmirT/w401CDV

noitcetorPtiucriCtrohS setunim01-mreTtrohS

zHk1-zH01,esioNtuptuO 002P-PVµ

noitelpmoCegdirBflaH

eulaVecnatsiseRlanimoN 01smhok

stnemeriuqeRrewoP

V/V0001<G<2ycaruccAnoitauqEniaG 3%

stopmirT/w

V/V0001=G

mumixaM

tnerruC

tiucriCtrohS etunim1

ffOlloR

)01(ylppuSnoitaticxEegdirB

Am021-0= 20.050.0%

CDV61-5.41=niVnoitalugeReniL 500.010.0V/%

mreTtrohS

mreTgnoL

gnitarepO±31

gnitarepO

egarotS

rotsiseRteSlanretxE/w

enolareifilpmA

.xaM,sniaGrehtOtA

esnopseRraeniL,egnaR

)7(zH06-CD,wbzHk1

)7(zH06-CD,wbzH01

zH01-zH1.0

zH001-zH01

daoLmhok2,egatloV

ecnaticapaCdaoL

htdiwdnaBlangiSllamS

seloPforebmuN

erutarepmeT.sV

tfirDpu-mraW 10.0%

egdirBmho053,egnaRtnemtsujdAecnalaB 51±Vm

ecnamrofrePdetaR

)3erugifees(esnopseRpmA

)NotPniP(niaGCD

001

2

57
52

200.0500.0%

2±

2.0±
)G/02(±2.0±

1

04

1

04

9±

51±
001
021

3.0

1

±01

±5

elbatsujdAzHk

2

2+
04

50.0

2.0

0408

±51

52­04-

005

0005

051
001

01±

1±

5An
5An

0001

±61

55
08

V/V

C°/mpp

C°/Vµ

C°/Ap
C°/Ap

CDV

Bd

P-PVµ

CDV

Am

Fp

V/V

ceD/Bd

srH42/%

srHk/%

C°/mpp

CDV

C°

"

Notes:

,niaGderiuqeR

tuptuOderetliF

GR

eulaV

01smho004,21
001

smho002,01

33.333smho103

V/Vm3rofesU(

)srecudsnarT

005smho502

V/Vm2rofesU(

)srecudsnarT

0001

smho001

GRrofdetcelesebdluohsrotsisermliflatemC°/mpp5,ytilibatshgihA:etoN

.ecnamrofrepmumixamrof

(1) Specifications referred to the filter output (Pin N).
(2) Using on board coarse and fine gain adjust trimpots.
(3) Warm-up drift is specified as the input offset drift for the first

5 minutes after the application of power with G = 1000 V/V,

Bridge supply = 10V driving a 350 ohm bridge.
(4) Measured at 25°C Ambient with unit fully warmed up.
(5) Measured from -Input to +Input or input with respect to

ground.
(6) Specified with 350 ohm bridge as source impedance.
(7) Filter frequency set with DIP switches.
(8) Small signal response, switch or resistor/capacitor selectable,

see applications section.
(9) The low pass filter cutoff frequency is adjustable to 10, 100

and 1000 Hz using the onboard DIP switches and from 1 Hz

to 10 KHz using external resistors and capacitors.
(10) Bridge supply must be operated with +Sense connected to

the Bridge Supply Pin and with -Sense connected to Common.
(11) Stability is defined after a 5 minute warm-up period and with

constant line, load and ambient temperature unless otherwise

specified.
(12) Quiescent current for amplifiers only, the current drawn from

the bridge supply must be added to the +15 VDC current

drain for total current draw.

RG = ohms

50,000

G - 1

Equation 2: User supplied resistor value required to set gain
with respect to Pin P, amplifier direct output. NOTE: If a fixed
resistor is used for RG, then resistor R6 should be removed
from the OM2-163 to disable the gain trimpots. If a slightly
higher RG is used, the pots and R6 can be used to provide a
small adjustment range.

Example Resistor Values for Common Gains (to Filtered
Output):

Functional Description

The OMEGA Model OM2-163 is a completely self contained
single channel signal conditioning system on a card. This
device offers the high performance and reliability of surface
mount circuitry with the completeness of a mounting kit
containing all trimpots and components needed for operation.
All that needs to be added is power and transducer inputs to
get a conditioned output suitable for driving A/D converters,
panel meters, indicators, or PC based controllers.

Instrumentation Amplifier

The heart of the OM2-163 is the high performance
instrumentation amplifier. This amplifier features low noise,
low drift and high accuracy along with trimpot adjustments for
coarse/fine gain and input offset voltage. The direct
instrumentation amplifier output is brought out to Pin P on the
OM2-163, through a 100 ohm isolation resistor. This output is
also brought out to the test point AMP OUT at the trimpot edge
of the mounting kit. The trimpots allow a gain adjustment
range of 100 to 500 V/V with a coarse and fine gain adjuster
(clockwise rotation increases gain). A user supplied resistor
can be used in place of the trimpots (see equations below) to
get any gain from 2 to 5000V/V (referred to filtered output). To
use an external resistor remove R6 from the mounting kit to
disable the trimpots, then calculate the required value for RG
and solder it on the mounting kit in the spot provided.

The gain equation accuracy is ±3 percent for gains from 2 to
1000 V/V.

RG = ohms

Equation 1: User supplied resistor value required to set gain
with respect to Pin N, filtered output.

100,000

G - 2

The instrumentation amplifier also has a trimpot adjustment
for input offset voltage, this trimpot should be used to null the
instrumentation amplifier offset only. System offsets should
be adjusted out using the Bridge Balance or the Output Offset
feature (see applications section for more information) to
retain minimum offset drift of the instrumentation amplifier.
The OM2-163 inputs should be placed as close to the
transducer as possible. This will minimize any possible pickup
of electrostatic or electromagnetic noise into the very high
impedance inputs. See the applications section for more
information on shielding methods.

Active Filter

The output of the instrumentation amplifier is connected to the
input of a 2 pole, active filter with a gain of 2. This filter has an
adjustable filter cutoff frequency of 10, 100 and 1kHz by the
use of on board DIP switches and can be set to any frequency
from 10 Hz to 10 kHz by the use of user supplied resistors and
capacitors. The filtered output is brought out to Pin N and to
test point FILTER OUT at the trimpot end of the board on the
OM2-163. Pin N is the standard output for most strain gage
and instrumentation applications. By using the filtered output
extraneous noise above the useful signal frequency is removed
at a rate of 40dB/decade above the filter cutoff frequency
allowing very precise and low noise measurements to be
made. Figure 2 details the DIP switch settings and the
equations required to set the filter cutoff to any other frequency.

The filter stage is also the input for the output offset voltage
adjustment. The output offset may be adjusted with the on
board trimpot or by driving the output offset input (Pin K) with
a low impedance source or the wiper of a trimpot. NOTE: to
use the on-board offset pot, J1 must first be removed. The
gain from the External Output Offset pin (Pin K) to the filtered
output (Pin N) is approximately 1 V/V (i.e. if Pin K is changed
by 1 Volt in a positive direction then Pin N will also change by
1 Volt in a positive direction).

#

If pin K is used as the Output Offset control, than J1 should be
installed to prevent interaction of RP1.

Filter Cutoff Frequency Adjustment

ycneuqerFffotuC2WS3WS4WS5WS

zH01NONO

zH001NONO

zH0001

tceleSresUro

CX1 = CX2 = 0.0024 µF -1

1000

Fc

CUTOFF FREQUENCY > 1000 Hz

FFOLLA

Bridge Supply

The bridge excitation supply is a very well regulated low noise
output designed to drive either full or half bridge transducers
from 0 to 120mA output current. The output can be set to a
fixed +10V by setting DIP switch SW1 ON. By setting SW1
OFF the output can be adjusted from +4 to +10Volts by
adjusting the bridge supply adjust trimpot.

The bridge supply uses + and - sense connections to
compensate for any line drops that might be present when
using remote transducers. See the applications examples for
more information on properly using the + and - sense pins. If
remote sensing is not required connect +Sense (Pin D) to
Bridge Supply (Pin 4) and -Sense (Pin 9) to Common (Pin B)
directly at the mounting kit socket. The maximum voltage
difference between the Bridge Supply, Pin 4 and the +Sense,
Pin D, is 0.4V.

RX1 = 35,000/ -1

Fc

1000

RX2 = 105,000/ -1

Fc

1000

BUILT IN LOW PASS FILTER FREQUENCY RESPONSE

10

0

-10

-20

-30

GAIN (db) PIN P - PIN N

-40

-50
1 10 100 1000 10000 1000000

10Hz

FREQUENCY (Hz)

FIGURE 2. Dip switch settings and equations required to set the
filter cutoff frequency.

163MK INPUT AMP RESPONSE

6

10

5

10

4

10

3 db FREQUENCY, HERTZ

3

10

0

10

1

10

FIGURE 3.

100Hz 1000Hz

2

10

GAIN

3

10

4

10

Half Bridge Completion/Bridge Balance

Two 10K ohm thin film resistors are connected to the excitation
supply sense lines and their center connection is brought out
to pin R. These resistors have a low temperature coefficient
and track to 5 PPM/°C. This circuit can be used as the other
half of a Half Bridge transducer to provide a common mode
voltage to the instrumentation amplifier. Pin R can be connected
to either the + or - input pin, depending on the polarity of the
transducer output signal.

A Bridge Balance circuit is also provided. RP6, BAL ADJ, is
also connected across the excitation sense leads and it's
swinger is brought out to Pin 14 through R18. With pin 14
connected to the same amplifier input as a 350 ohm Half
Bridge transducer, a bridge balance range of ±50% is available.
Alternately, pin 14 can be connected to the Bridge Completion
resistors. However, in this case R18 should be increased to 1
megohm to reduce the sensitivity of the adjustment. The
Bridge Balance pin can be connected to either input when a
Full Bridge transducer is used.

General Calibration Procedures

The OM2-163 comes from the factory adjusted to the following
specifications:

GAIN .................................... 333 V/V

INPUT OFFSET ...................Adjusted to 0, ±2mV

OUTPUT OFFSET ............... J1 Installed

BRIDGE SUPPLY ................SW1 CLOSED, Bridge Output

at +10 Volts

FILTER................................. SW2 - SW5 OFF, Filter at 1 kHz

BRIDGE BALANCE ............. Pin 14 at 0 Volts

When adjusting the OM2-163 to other values the following
methodology should be used,

1) Ground the inputs, set the input offset trimpot to get 0

Volts on the output you will be using (Pins N or P). Input
offset is for amplifier nulling only. Do not use the input
offset for zeroing systems offsets, use the bridge balance
or the output offset adjustments for system offset
correction.

$

2) Using a millivolt calibrator or the transducer output itself,
set the gain so that the proper full scale output voltage is
realized (the mV calibrator or transducer should be set to
simulate full scale output).

3) If system offsets must be accounted for repeat step 1
again with the inputs disconnected from the source and
connected to ground, or short them together with the
bridge connected, then reconnect the inputs and re-zero
the output with the bridge balance (if used).

4) Steps 1 - 3 above may need to be repeated several times
to achieve the desired accuracy of gain and offset.

OM2-163 Application Examples

FIGURE 4. OM2-163 Trimpot Adjustment Detail

FIGURE 5. Full Bridge with Remote Excitation Sense

FIGURE 6. Full Bridge with No Remote Sense

%

OM2-163 Application Examples

FIGURE 7. Half Bridge - 3 Wire

FIGURE 8. 1/4 Bridge - 2 Wire

&

OM2-163 Application Examples

FIGURE 9. 1/4 Bridge - 3 Wire

OM2-163 Mechanical Specifications

TP1 B+OUT

5
4
3
2
1

SW1- 1 2 3 4 5

RP2 B+ ADJUST

RP6 BRIDGE BAL

CX1

CX2

J1

J2

TP2 AMP OUT

RP1 OUTPUT OFFSET

R6

RX2

RX1

RP3 INPUT OFFSET

RP5 COARSE GAIN

ON ON

ON ON

BRIDGE SUPPLY

10V FIXED

ADJUSTABLE

SW2 3 4 5

SW1ONOFF

FREQ

10HZ

100HZ

J4

J3

RP4 FINE GAIN

ALL OFF

1KHZ

ST4

ST2

TP3 FILTERED OUTPUT

TP4 COM

J5

R18

RG

ST3

ST1

1

15

1-15

A-S

'

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 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, please have the
following information available BEFORE contacting
OMEGA:

1. Purchase Order number under which the
product was PURCHASED,

2. Model and serial number of the product
under warranty, and

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 form, in whole or in part, without the
prior written consent of OMEGA ENGINEERING, INC.

FOR NON-WARRANTY REPAIRS, consult OMEGA
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 product, and

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



Where Do I Find Everything I Need for

Process Measurement and Control?

OMEGA...Of Course!

TEMPERATURE

þ Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies
þ Wire: Thermocouple, RTD & Thermistor
þ Calibrators & Ice Point References
þ Recorders, Controllers & Process Monitors

þ Infrared Pyrometers

PRESSURE, STRAIN AND FORCE

þ Transducer & Strain Gauges
þ Load Cells & Pressure Gauges
þ Displacement Transducers

þ Instrumentation & Accessories

FLOW/LEVEL

þ Rotameters, Gas Mass Flowmeters & Flow Computers
þ Air Velocity Indicators
þ Turbine/Paddlewheel Systems

þ Totalizers & Batch Controllers

pH/CONDUCTIVITY

þ pH Electrodes, Testers & Accessories
þ Benchtop/Laboratory Meters
þ Controllers, Calibrators, Simulators & Pumps

þ Industrial pH & Conductivity Equipment

DATA ACQUISITION

þ Data Acquisition & Engineering Software
þ Communications-Based Acquisition Systems
þ Plug-in Cards for Apple, IBM & Compatibles
þ Datalogging Systems

þ Recorders, Printers & Plotters

HEATERS

þ Heating Cable
þ Cartridge & Strip Heaters
þ Immersion & Band Heaters
þ Flexible Heaters

þ Laboratory Heaters

ENVIRONMENTAL
MONITORING AND CONTROL

þ Metering & Control Instrumentation
þ Refractometers
þ Pumps & Tubing
þ Air, Soil & Water Monitors
þ Industrial Water & Wastewater Treatment
þ pH, Conductivity & Dissolved Oxygen Instruments

M-3714/0301

