Omega Products PHB-900 Installation Manual

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User ’s Guide

PHB-900 Series

pH Benchtop Meters

Servicing North America:

USA: One Omega Drive, Box 4047

ISO 9001 Certified Stamford, CT 06907-0047

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

Canada: 976 Bergar

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

For immediate technical or application assistance:

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

SM

Customer Service: 1-800-622-2378 / 1-800-622-BEST

SM

Engineering Service: 1-800-872-9436 / 1-800-USA-WHEN

SM

TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA

Mexico and
Latin America:

Tel: (95) 800-TC-OMEGA

SM

FAX: [phone]

En Espan÷ol: [phone] e-mail: [e-mail]

Servicing Europe:

Benelux: Postbus 8034, 1180 LA Amstelveen, The Netherlands

Tel: [phone] FAX: [phone]
Toll Free in Benelux: 06 0993344
e-mail: [e-mail]

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

Czech Republic
Tel: [phone] FAX: [phone]
e-mail: [e-mail]

France: 9, rue Denis Papin, 78190 Trappes

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

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

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

United Kingdom: 25 Swannington Road, P.O. Box 7, Omega Drive,

ISO 9002 Certified Broughton Astley, Leicestershire, Irlam, Manchester,

LE9 6TU, England M44 5EX, England
Tel: [phone] Tel: [phone]
FAX: [phone] FAX: [phone]

Toll Free in England: 0800-488-488

e-mail: [e-mail]

omega.comomega.com

OMEGAnetSMOn-Line Service Internet e-mail

http://www.omega.com [e-mail]

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.

OMEGA

TM

®

Table Of Contents

Quick Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ii

Getting Started

Front panel controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Digital display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1

Rear panel connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Connecting to a power source . . . . . . . . . . . . . . . . . . . . . . .2

Installing and Maintaining Electrodes . . . . . . . . . . . . . . . . . . . .3

Preparing glass electrodes . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Installing the combination glass pH electrode . . . . . . . . . . . .3

Installing the FET pH electrode . . . . . . . . . . . . . . . . . . . . . . . .4

Installing ORP or ISE electrodes . . . . . . . . . . . . . . . . . . . . . . . .4

Rinsing electrodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Storing electrodes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

Standardizing for pH Measurement . . . . . . . . . . . . . . . . . . . . . .6

Entering buffers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

The diagnostic electrode test . . . . . . . . . . . . . . . . . . . . . . . . .7

Selecting buffers based on 20oC or 25oC . . . . . . . . . . . . . . .8

Using Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Clearing Buffers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Reviewing electrode standardization . . . . . . . . . . . . . . . . . . .9

Selecting buffer sets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Standardizing for Millivolt Measurement . . . . . . . . . . . . . . . . .11

(Relative Millivolts) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

Entering a millivolt standard . . . . . . . . . . . . . . . . . . . . . . . . .11

Clearing a millivolt standard . . . . . . . . . . . . . . . . . . . . . . . . .12

Measuring pH or Millivolts . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Understanding pH Theory . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Defining pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Measuring pH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

The “Error”Icon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

The “CAL Error”Icon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

The “Err oC”Icon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

The “Electrode Error”Icon . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Electrode testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Meter Operation testing . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Meter Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

i

1. Connect power
cable to meter
power jack and
to AC power
source.

power

ref

input

FET

ATC

2. Connect the glass electrode to the
input and ATC connectors, or con­nect the FET electrode to the FET con­nector.

rel mV pH

3. Press pH/mV until the dis­play indicates the appro­priate measurement
mode.

4. Standardize the meter using
up to three buffers by immers­ing the electrode in a buffer,
then pressing Standardize to
enter each buffer.

Standardizing

PHB900 Series pH Meter Quick Reference

5. The display shows the current
reading in pH,mV,or relative
mV units.

6. Press Setup to review elec­trode calibration and to clear
or select buffer sets.

%slope

Clear

Set Buffers

Measuring

S

ii

pH/mV Standardize

pH/mV Standardize

Setup Enter

Setup Enter

pH/mV Standardize

pH/mV Standardize

Setup Enter

Setup Enter

Getting Started

1

pH/mV Standardize

Setup Enter

pH/mV - button toggles
between pH and mV modes.

Standardize - the meter rec­ognizes and displays buffers.

Setup - use to clear buffers
and to select new set of
buffers.

Enter - use to enter buffers.

Digital Display

100.0°C

%slope rel mV pH

-18.0.0.0

Good Electrode Error FET
Standardizing Clear
Measuring Set Buffers

2 4 7 10 12 1 3 5 8 10 13

1.68 4.01 6.86 9.18 12.46

1.08 3.06 4.86 6.79 9.23 12.76

S

Stability

Icon

Temperature

Mode

Front Panel Controls

Result

Electrode

Check

Icons

Prompts

Buffer
Icons

power

ref

input

FET

ATC

Rear Panel Connectors

Power
Cable

Connector

Reference

Electrode

Connector

Glass pH or

ISE

Electrode

Connector

FET

Electrode

Connector

Temperature

Probe

2

AC

Adapter

Power

Connector

Installing and Maintaining Electrodes

This meter allows you to use two types of pH electrodes: the
pH glass electrode and the field effect transistor (FET) pH elec­trode.If both types of electrodes are installed,the meter will
read the FET electrode.

NOTE: If both electrodes are connect­ed to the meter, do not put them in a solution together
because you will get inaccurate measurements.

3

1.Remove the protective end

cover from electrode.

3.Remove the shorting cap on the BNC connector.Install the com­bination glass pH electrode by plugging it into the input connec­tion (twist-lock) and the ATC connector into the ATC jack.

2.Before first use of your glass pH
electrode,or whenever the
electrode is dry,soak over-night
in a filling or KCI solution.

ATC

FET

input

ref

er

w

o

p

4

ATC

4.

Option:

Install the optional FET electrode by plugging it into the FET
jack on the back of the meter panel.Allow the FET electrode to
warm up for one minute prior to use.

5.

Option:

Install ORP or Ion Selective Electrode pairs by removing the
BNC shorting cap and plugging the BNC connector (twist-lock)
into the BNC jack.If a combination electrode is not used, plug the
reference electrode into the ref pin.

FET

input

ref

er

w

o

p

ATC

FET

input

ref

er

w

o

p

5

6. Rinse and blot-dry elec­trodes between each
measurement (do not
wipe).Rinse electrodes
with distilled water or
deionized water,or part
of the next solution to be
measured.

7. Store glass and FET pH elec­trodes in electrode filling solu­tion or KCI solution.Always
leave the filling hole open
and refill with filling solution
when the internal solution
level gets low.

6

E

Standardizing for pH Measurement

Because electrodes vary in their response,you must standard­ize your pH meter and electrode to compensate for electrode
variation.The more frequently you standardize,the more
accurate your measurements.Standardize daily,or more
often,for accurate results.

1.Immer se electrode in a buffer
solution.Stir gently.

pH

4.12

2.Press and release the pH/mV
button until your digital dis­play indicates pH mode.This
button toggles between pH
and mV modes.

pH

Clear

Buffers

3.Clear existing buffers when
doing a new 2 or 3 point stan­dardization.Use the Setup
button to clear existing buffers
and to select a new set of
buffers.

4.Press Standardize.The meter
recognizes the buffer and
flashes a buffer icon.When
the signal is stable,or when
you press Enter,the buffer is
entered.

pH

4.00

Standardizing

4

nter

pH/mV Standardize

Setup Enter

pH/mV Standardize

Setup Enter

pH/mV Standardize

Setup Enter

7

pH/mV Standardize

5.The meter displays the %slope
of the electrode as 100.0% On
entering a second or third
buffer,the meter performs a
diagnostic check on the elec­trode.

%slope

100.0

4

6.To enter a second buffer,
place the electrode in the
second buffer solution and
press Standardize again.The
meter recognizes the buffer
and displays the first and sec­ond buffer icons.

pH

7.00

Standardizing

4 7

7.Next, the meter performs a
diagnostic test of the elec­trode.The display indicates
either Good Electrode or
Electrode Error.The meter dis­plays the % slope of the elec­trode.

8.Electrode Error indicates that
your electrode is not working
properly. The electrode
response must be between 90
and 105% slope.Measure­ments causing Electrode Error
are not accepted,used or
stored by the meter.

%slope

99.4

Good Electrode

4

%slope

82.3

Electrode Error

4

Setup Enter

pH/mV Standardize

Setup Enter

pH/mV Standardize

Setup Enter

pH/mV Standardize

Setup Enter

8

pH/mV Standardize

9.To set a third standard,place
the electrode in the third
buffer solution and press
Standardize.The results will be
the same as in steps 6 and 7,
except the display will show
three buffer icons.

10.After enter ing each buffer,
the

Standardizing

icon goes

off and the

Measuring

icon
appears on the display to
indicate that the meter
returns to

Measuring

.

22.5°C

pH

10.03

Standardizing

4 7 10

11.The first set of buffers in the
meter is used at 25°C in
North America and, typically,
at 20°C in Europe.In pH
mode,press Standardize and
Setup together to show the
current buffer temperature
setting.Press both
Standardize and Setup again
to toggle between the tem­perature settings.Press Enter
to select the displayed tem­perature setting and to
return to

Measuring.

12.Standardize your meter and
electrode using at least two
buffers with pH values brack­eting the expected pH of
your samples.Stirr ing with a
magnetic stir bar and stirrer
provides faster electrode
response.

25°C

Set Buffer

2 4 7 10 12

pH

10.00

Standardizing

4 7 10

NOTE: The meter continually
adjusts for temperature. Therefore,
buffers may vary slightly from the
nominal values because of tem­perature variations.

Setup Enter

pH/mV Standardize

Setup Enter

pH/mV Standardize

Setup Enter

Denver Instrument

22.2¡C

pH

S

6

0

.

4

g

n

i

r

u

s

a

e

M

4

Enter

Setup

Standardize

pH/mV

BASIC

9

Using Setup

The Setup button lets you clear all the buffers that you have
entered,review calibration information,or select the buffer set
that you want.

NOTE: You can escape setup mode at any

time by pressing pH/mV.

1.Press Setup and the meter dis­plays a flashing

Clear Buffers

icon.

Use this step only when
you wish to clear all buffers
you have entered

.To clear all
existing buffers, press Enter.The
meter clears all buffers and
returns to

Measuring.

2.Press Setup again to show
electrode performance.If the
meter has accepted an elec­trode and buffers, it will dis­play

Good Electrode

,display
the slope between the first
and second buffers and dis­play the two buffer icons.

3.Pressing Setup again shows
the electrode slope between
the second and third buffers
(if three buffers have been
entered) and shows the sec­ond and third buffer icons.

4.Press Setup again to display a
flashing

Set Buffers

icon and
to display the first buffer set
icons.

%slope

99.4

Good Electrode

4

pH

Set Buffers

2 4 7 10 12

pH

Clear

Buffers

%slope

98.7

Good Electrode

7 10

pH/mV Standardize

Setup Enter

pH/mV Standardize

Setup Enter

pH/mV Standardize

Setup Enter

pH/mV Standardize

Setup Enter

10

5.Press Enter to select the set of
buffers shown on the display

or
Press Setup again to view the
next set of buffers. Continue
pressing Setup to view the
third and fourth buffer sets.

6.Press Enter to select the dis­played buffer set that con­tains the buffer you want to
use.Press Setup again,or
press pH/mV at any time,to
return to

Measuring

.

NOTE: You may mix buffers
from different sets.

pH

Set Buffers

1.68 4.01 6.86 9.18 12.46

pH

Set Buffers

1 3 5 8 10 13

pH/mV Standardize

Setup Enter

pH/mV Standardize

Setup Enter

11

E

Standardizing for Millivolt
Measurement (Relative Millivolts)

You will use millivolt measurement for measuring ion concentration
and for measuring redox potential (also called ORP, oxidation reduc­tion potential).You will normally use an ion selective electrode (ISE),
combined with a reference electrode,to measure ion concentration.
The ISE senses the ion concentration and responds with a millivolt
potential.The millivolt readings are then used to calculate ion con­centrations.You will normally use a platinum indicator electrode,
combined with a reference electrode,to measure redox potential
(ORP).ORP measurements indicate the oxidizing or reducing capa­bility of a solution.You can use ORP values to monitor or control solu­tions requiring a set amount of oxidants or reductants.

1.Immer se electrode in a stan­dard solution.

mV

100.0

2.Press the pH/mV button until
your digital display indicates
mV mode.

3.Press Standardize to enter a
mV standard and read rela­tive mV.

NOTE: Relative mV mode is not
allowed with the FET electrode.

4.When the signal becomes sta­ble,or when you press Enter,
the current absolute mV
value becomes zero relative
millivolts.

rel mV

0.0

Measuring

mV

100.0

Standardizing

nter

pH/mV Standardize

Setup Enter

pH/mV Standardize

Setup Enter

pH/mV Standardize

Setup Enter

pH/mV Standardize

5.To clear a mV offset and
return to absolute millivolt
mode,press Setup.The meter
displays a flashing

Clear

icon,
and the current relative milli­volt offset.

6.To clear your previous mV
standard,press Enter.You then
return to absolute mV mode.

rel mV

0.0

Measuring

mV

100.0

Clear

12

Measuring pH or Millivolts

1.Standardize your meter. See page 10.

2.Rinse electrode and immerse in sample solution.Stir gently.

3.Press pH/mV until your display indicates the correct mode.

4.The display shows the current reading in pH, mV,or relative
mV units.When the signal is stable, the meter displays the S
icon.The S icon means the signal is changing less than 0.007
pH or 0.08 mV from the prior reading.

5.You may receive an out of range error, Err,if your electrode is

not immersed in a solution.To correct the error,immerse the
electrode in a solution.

6.Separate calibrations for the glass and FET electrodes are
stored in memory.Plugging the FET in recalls it’s calibration,
unplugging the FET recalls the glass electrode calibration.

Measuring

S

rel mV pH

Err

Electrode Error
Measuring

Setup Enter

pH/mV Standardize

Setup Enter

pH/mV Standardize

Setup Enter

pH/mV Standardize

Setup Enter

13

Understanding pH Theory

Defining pH

The measurement of pH plays an important role in identifying
and controlling acidity and alkalinity levels for industry and
research. pH is a measure of the acidity or alkalinity of a solu­tion and can be represented by this equation:

pH = -log [H+]

with [H+] representing the concentration of hydrogen ions in
the solution. pH is sometimes referred to as the power of the
hydrogen ion in a solution.

By using a pH meter,you can determine exact pH levels of
solutions. For example, rather than say that lemon juice is quite
acidic,you can say that lemon juice has a pH of 2.4. An
exact pH value can be used to control or measure acidity lev­els for manufacturing processes or for basic research.

pH values generally range from 0 to 14,with a pH value of 7
being the neutral point,or the value of pure water. The pH
values above the neutral point represent increasing alkalinity,
whereas pH values below the neutral point represent increas­ing acidity (Figure 1).

Strong Acid

Lemon Juice

Tomato Juice

Coffee

Pure water

Baking Soda

Ammonia

Strong Base

Neutral

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14

more acidic

more basic

pH

Figure 1.

pH Scale showing the relative acidity or basicity

of some common substances.

Measuring pH

To measure pH with a conventional glass pH electrode,the
meter uses a pH-sensing glass bulb electrode that is sensitive
to hydrogen ions.The potential developed at the glass bulb is
directly related to the pH of the solution.

The glass bulb electrode is paired with a reference electrode
which completes the electrical measuring circuit and provides
a stable reference point.These two electrodes are joined to
create a combination electrode.The combination glass elec­trode is connected to the pH meter which reads the voltage,
converts it to pH units,and displays the result.

Combination Glass pH Electrode

This meter can also use a field effect transistor (FET) electrode
for measuring pH.The FET uses an ion-sensitive solid state
membrane attached to the transistor to measure the hydro­gen ion concentration of a solution.The FET is paired with a
reference electrode and counter electrode that maintain a
constant potential while the FET responds to the sample.

14

Reference
Electrode
(Outer Body)

Glass
Membrane

Glass
Electrode
(Inner Body)

Porous
Junction

Glass
Membrane

Temperature
Sensor

Reference
Electrode

pH-Sensitive
Membrane

Counter
Electrode

FET

Temperature
Sensor

Annular Porous
Junction

Troubleshooting

15

Err

Electrode Error

1. If the signal from the elec­trode is

out of range

,the dis­play will show Err.This may
happen when the electrode
is not in a solution.

Electrode Error

2. The meter will display

Electrode Error

when it
detects an error in electrode
response.During standardiza­tion,the message indicates
that the electrode is less than
90% or more than 105% of the
correct response.The

Electrode Error

message can
indicate either a bad elec­trode or bad buffer(s).

Err°C

Error

3. If the meter detects an error
in the temperature probe,the
display shows

Err°C

.If you do
not use a temperature probe,
the meter uses the default
temperature that you set to
either 20°C or 25°C.

4. To test the pH electrode,
place it in a good pH 7
buffer. Press pH/mV to use the
mV mode,and note the milli­volt reading.Repeat for either
a pH 4 or pH 10 buffer. The
electrode signal must be
within the limits shown below
(when temperature is near
25°C).

Electrode Test

pH 7 0 + 30 mV
pH 4 159 to 186 mV

more than pH 7

pH10 159 to 186 mV

less than pH 7

pH/mV Standardize

Setup Enter

pH/mV Standardize

Setup Enter

pH/mV Standardize

Setup Enter

16

Cal

Error

5. To test the meter for correct operation,install the BNC (input) shorting cap.
Press pH/mV to use the mV mode,and note the mV reading.If the meter
reads ) + 0.5 mV,it is measur ing correctly.

6. If the meter detects a loss of
calibration or a hardware
error during its power-up self­test,the display shows

CAL

Error

.This means the mV
accuracy may be reduced,
but pH accuracy after stan­dardization will be the same.
Press Enter to continue using
the meter.If recalibration is
desired,contact Technical
Support.

ATC

FET

input

ref

er

w

o

p

pH/mV Standardize

Setup Enter

Meter Specifications

pH -1.99 to 19.99 pH

displayed to 0.01 pH
accurate to 0.01 pH

mV -1800.0 to 0.01 mV

displayed to 0.1 mV
accurate to 0.5 mV

Temperature -5.0 to 105.0°C

displayed to 0.1°C

accurate to 0.1·°C
Standardization 0,1, 2 or 3 buffers
Auto buffer recognition 22 buffers

2,4, 7, 10,12

1,3, 6,, 8,10, 13

1.68,4.0, 6.86, 9.18,12.46

1.09,3.06, 4.65, 6.79,9.23, 12.75

Auto Temperature Compensation
Automatic electrode slope correvtion for 90-105%
Direct reading with both a glass and FET pH electrode

17

WARRANTY/DISCLAIMER

MEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and

orkmanship for a period of 37 months from date of purchase. OMEGA Warranty adds an
dditional one (1) month grace period to the normal three (3) years product warranty to
over handling and shipping time. This ensures that OMEGA’s customers receive maximum
overage on each product.

the unit should malfunction, it must be returned to the factory for evaluation. OMEGA’s

ustomer Service Department will issue an Authorized Return (AR) number immediately upon
hone or written request. Upon examination by OMEGA, if the unit is found to be defective it will
e repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting

om any action of the purchaser, including but not limited to mishandling, improper interfacing,
peration 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

f being damaged as a result of excessive corrosion; or current, heat, moisture or vibration;

mproper specification; misapplication; misuse or other operating conditions outside of OMEGA’s

ontrol. Components which wear are not warranted, including but not limited to
ontact points, fuses, and triacs.

MEGA is pleased to offer suggestions on the use of its various products. However,

MEGA neither assumes responsibility for any omissions or errors nor assumes liability for
ny damages that result from the use of its products in accordance with information pro­ided 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, EXPRESSED OR

MPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED W ARRANTIES INCLUDING ANY WAR-

ANTY OF MERCHANTABILITY AND FITNESS FOR A P AR TICULAR PURPOSE ARE HEREBY

ISCLAIMED. LIMITATION OF LIABILITY: The remedies of purchaser set forth herein are
xclusive and the total liability of OMEGA with respect to this order, whether based on con-

act, warranty, negligence, indemnification, strict liability or otherwise, shall not exceed

he purchase price of the component upon which liability is based. In no event shall OMEGA

e liable for consequential, incidental or special damages.

ONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as

“Basic Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity;
r (2) in medical applications or used on humans. Should any Product(s) be used in or with any
uclear installation or activity, medical application, used on humans, or misused in any way,

MEGA assumes no responsibility as set forth in our basic WARRANTY/DISCLAIMER language,
nd additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability
r damage whatsoever arising out of the use of the Product(s) in such a manner .

RETURN REQUESTS / INQUIRIES

irect all warranty and repair requests/inquiries to the OMEGA Customer Service Department.

EFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN

UTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT

N ORDER TO AVOID PROCESSING DELAYS). The assigned AR number should then be

marked on the outside of the return package and on any correspondence.

he purchaser is responsible for shipping charges, freight, insurance and proper packaging to
revent breakage in transit.

OR W

ARRANTY RETURNS, please have

he following information available BEFORE

ontacting OMEGA:
. P.O. number under which the product was

PURCHASED,

. Model and serial number of the product

under warranty, and

. Repair instructions and/or specific

problems relative to the product.

FOR NON-WARRANTY REPAIRS,

consult
OMEGA for current repair charges. Have the
following information available BEFORE
contacting OMEGA:

1. P.O. number to cover the COST

of the repair,

2. Model and serial number of product, and

3. Repair instructions and/or specific problems

relative to the product.

MEGA’s policy is to make running changes, not model changes, whenever an improvement is possible.

his affords our customers the latest in technology and engineering.

MEGA is a registered trademark of OMEGA ENGINEERING, INC.
Copyright 1996 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied,

produced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without

ior written consent of OMEGA ENGINEERING, INC.

UUSASA

MADE

ININ

M2832/0298

Where Do I Find Everything I Need for

Process Measurement and Control?

OMEGA…Of Course!

TEMPERATURE

MU

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

MU

Wire: Thermocouple, RTD & Thermistor

MU

Calibrators & Ice Point References

MU

Recorders, Controllers & Process Monitors

MU

Infrared Pyrometers

PRESSURE, STRAIN AND FORCE

MU

Transducers & Strain Gauges

MU

Load Cells & Pressure Gauges

MU

Displacement Transducers

MU

Instrumentation & Accessories

FLOW/LEVEL

MU

Rotameters, Gas Mass Flowmeters & Flow Computers

MU

Air Velocity Indicators

MU

Turbine/Paddlewheel Systems

MU

Totalizers & Batch Controllers

pH/CONDUCTIVITY

MU

pH Electrodes, Testers & Accessories

MU

Benchtop/Laboratory Meters

MU

Controllers, Calibrators, Simulators & Pumps

MU

Industrial pH & Conductivity Equipment

DATA ACQUISITION

MU

Data Acquisition & Engineering Software

MU

Communications-Based Acquisition Systems

MU

Plug-in Cards for Apple, IBM & Compatibles

MU

Datalogging Systems

MU

Recorders, Printers & Plotters

HEATERS

MU

Heating Cable

MU

Cartridge & Strip Heaters

MU

Immersion & Band Heaters

MU

Flexible Heaters

MU

Laboratory Heaters

ENVIRONMENTAL
MONITORING AND CONTROL

MU

Metering & Control Instrumentation

MU

Refractometers

MU

Pumps & Tubing

MU

Air, Soil & Water Monitors

MU

Industrial Water & Wastewater Treatment

MU

pH, Conductivity & Dissolved Oxygen Instruments