Omega Products CL230 Installation Manual

TEMPERATURE

✭✵

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

✭✵

Wire: Thermocouple, RTD

✭✵

& Thermistor

✭✵

Calibrators & Ice Point

✭✵

References

✭✵

Recorders, Controllers &

✭✵

Process Monitors

✭✵

Infrared Pyrometers

PRESSURE, STRAIN
AND FORCE

✭

✵

Transducers & Strain

✭✵

Gauges

✭✵

Load Cells & Pressure

✭✵

Gauges

✭✵

Displacement Transducers

✭✵

Instrumentation &

✭✵

Accessories

FLOW/LEVEL

✭

✵

Rotameters, Gas Mass
Flowmeters
& Flow Computers

✭✵

Air Velocity Indicators

✭✵

Turbine/Paddlewheel

✭✵

Systems

✭✵

Totalizers & Batch

✭✵

Controllers

pH/CONDUCTIVITY

✭

✵

pH Electrodes, Testers &

✭

✵

Accessories

✭✵

Benchtop/Laboratory

✭✵

Meters

✭✵

Controllers, Calibrators,
Simulators & Pumps

✭✵

Industrial pH &

✭✵

Conductivity Equipment

DATA ACQUISITION

✭

✵

Data Acquisition &
Engineering Software

✭✵

Communications-Based
Acquisition Systems

✭✵

Plug-in Cards for Apple,
IBM & Compatibles

✭✵

Datalogging Systems

✭✵

Recorders, Printers &

✭✵

Plotters

HEATERS

✭✵

Heating Cable

✭✵

Cartridge & Strip Heaters

✭✵

Immersion & Band Heaters

✭✵

Flexible Heaters

✭✵

Laboratory Heaters

ENVIRONMENTAL
MONITORING AND
CONTROL

✭✵

Metering & Control
Instrumentation

✭✵

Refractometers

✭✵

Pumps & Tubing

✭✵

Air, Soil & Water Monitors

✭✵

Industrial Water &
Wastewater Treatment

✭✵

pH, Conductivity &
Dissolved Oxygen
Instruments

Where Do I Find Everything I Need

for Process Measurement and Control?

OMEGA …Of Course!

M3125/0798

http://www.omega.com

e-mail: [e-mail]

CL230

Hand-Held

RTD Calibrator

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.

WWAARRNNIINNGG::

These products are not designed for use in, and should not be used for, patient con-

nected applications.

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 Karvina-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]

Servicing Europe:

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

USA: ISO 9001 Certified

One Omega Drive, Box 4047
Stamford, CT 06907-0047
Tel: [phone]
FAX: [phone]
e-mail: [e-mail]

Servicing North America:

For immediate technical or application assistance:

Mexico and Latin America:

Tel: (95) 800-TC-OMEGA

SM

FAX: [phone]
En Espan~ol: [phone]
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: ISO 9002 Cer

tified

•25 Swannington Road, Broughton
Astley, Leicestershire, LE9 6TU,
England
Tel: [phone]
FAX: [phone]

•P.O. Box 7, Omega Drive, Irlam,
Manchester, M44 5EX, England
Tel: [phone]
FAX: [phone]

Toll Free in England: 0800-488-488
e-mail: [e-mail]

Canada:

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

FOR WARRANTY RETURNS, please have the
following information available BEFORE
contacting OMEGA:

1. P.O. 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.

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.

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 1996 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 prior written consent of OMEGA ENGINEERING, INC.

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 should malfunction, 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 being 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,
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.

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User’s Guide

MAINTENANCE

Generally, with normal usage, this calibrator
should hold its rated specifications for at least 12
months. Beyond this, it should remain within

1.5X of its specification over its useful life,
provided it is not abused or tampered with. If
after the stated warranty period, the device falls
out of calibration, it can be returned to Omega
for re-calibration. Please call 1-800-826-6342 for
pricing and return information.

GENERAL DESCRIPTION

The CL230 is designed to be a simple to use, high
accuracy RTD Calibrator capable of either simulating
or reading several common RTD Types. When being
used as an RTD simulator the CL230 can calibrate a
wide range of RTD Transmitters and recording
devices due to its low excitation current capability.
The step and scroll keys allow the user to make
output changes quick and easily.

INSTALLATION

UNPACKING

Remove the Packing List and verify that all
equipment has been received. If there are any
questions about the shipment, please call Omega’s
Customer Service Dept. at 1-800-826-6342.

When you receive the shipment, inspect the container
and 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 claims unless
all shipping material is saved for their examination. After
examining and removing contents, save packing material
and carton in the event reshipment is necessary.

SET-UP

Before beginning, become familiar with the keypad
layout and the configuration of the input/output
jacks. Remember, these jacks are used in multiple
configurations so pay careful attention to the jack
identification label on back of unit and how the test
leads are connected for the specific application.

OPERATING PROCEDURE

1. Turn on power and select desired RTD type by
depressing the Range key. Once the desired range has
been selected it will remain in memory until a new
range is selected.

2. Select either input or output by depressing the
In/Out key.

NOTE: The display will read “OPEN” if the unit is
not connected to either an RTD or RTD measuring
device.

3. Connect the CL230 to the device under test as shown
in the operating modes section.

4. If you are using the CL230 in the output mode use
the Step or Scroll keys to set output.

The Step key will step in 100° increments and the
Scroll key allows single degree increments which will
increase in speed if the switch is depressed for several
seconds.

OPERATING MODES

1. RTD Simulation Mode

One of the most common uses of the CL230 is for
simulating an RTD when calibrating an RTD measur­ing device such as a transmitter, data logger, PLC or
similar product. To understand how to calibrate an
RTD measuring device, it’s important to have a gen­eral understanding of how an RTD operates.

By design, an RTD is a resistive sensor which changes
its resistance value (ohms) as a function of tempera­ture. Unlike a thermocouple, it does not “put out” a
voltage or current but is strictly a passive device.
Because of this, a current must be passed through the
RTD so that a voltage can be developed across the

RTD and then amplified by the measuring device.
Ohm’s Law is a simple algebraic expression which
describes the relations between voltage, current and
resistance.

Ohm’s Law states: V = I x R where V = Voltage,
I = Current, R = Resistance

From this equation, we can see that the voltage devel­oped across the RTD is equal to the current traveling
through it times its resistance. Therefore, for a fixed
current, the voltage measured will be directly propor­tional to the temperature.

Figure 1 illustrates a typical example of how an RTD
transmitter measures an RTD sensor using a fixed
current.

Figure 1

In this example a two-wire RTD transmitter is being
calibrated using the CL230 in the simulation mode.
The transmitter under test supplies an excitation cur­rent into the calibrator and the calibrator adjusts the
voltage drop at the terminals to yield the desired
resistance for a given temperature. For the CL230 to
operate properly the excitation current must be in the
range of 0.125mA to 2mA and the polarity must be
correct. Too low of excitation current or pulsed excita­tion current will be indicated by the word “OPEN”

flashing on the display. Reverse polarity will be indi­cated by “REV.POL” on the display. If your device
requiring calibration has a pulsed excitation current
refer to the PTC-9002.

The example in Figure 1 shows an RTD Transmitter
with the RTD sensor having two connection points.
In many cases, however, RTD devices have 3 and 4
wire connections. Figures 2 and 3 illustrate the proper
connection procedure.

Figure 2

Figure 3

In both of these examples a jumper(s) must be made at
the device under test for the circuit to work properly.
The proper connections for these jumpers are generally
shown by the label or silkscreen on the device under
test. If proper RTD connections are not obvious refer to
instruction manual for the device under test.

2. RTD Read Mode

The CL230 can also be used to read an RTD probe or
similar RTD sensor. The CL230 only works in the 4
wire mode; however, 2 and 3 wire RTD's can be read as
long as multiple connections are made at the RTD
loads. Refer to the label on the rear of the CL230 for
connection information.

SPECIFICATIONS

Ranges PT385 -200 to 850°C

PT392 -200 to 850°C
Ni120 -80 to 320°C
Jis.392 -200 to 850°C

Resolution 1°C or 1°F

Accuracy ±1°C

Excitation Current Range
(Source Mode) 0.125 to 2.0mA continuous

Operating Temp. 0 to 50°C

Storage Temp. -20 to 60°C

Temperature Coef. ±.01% F.S./°C

Power

1

9V alkaline battery

Case Size 1.43” x 3.15” x 5.7”

Weight 12 oz.

Notes: 1 A low battery indication is given at 5.5 volts.