Omega CL300A User guide

User’s Guide

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e-mail: [email protected]

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NORWALK, CT

SM

CL300A

Precision

Thermocouple Calibrator

omega.com [email protected]

Servicing North America:

U.S.A. Omega Engineering, Inc.
Headquarters: Toll-Free: 1-800-826-6342 (USA & Canada only)

Customer Service: 1-800-622-2378 (USA & Canada only)
Engineering Service: 1-800-872-9436 (USA & Canada only)
Tel: [phone] Fax: [phone]
e-mail: [email protected]

For Other Locations Visit omega.com/worldwide

The information contained in this document is believed to be correct, but OMEGA accepts no liability for any errors it contains, and reserves
the right to alter specifications without notice.

CL300A

1. Introduction

The OMEGA CL300A is designed to be a simple to use, high accuracy
thermocouple calibrator capable of either simulating or reading J, K, T, L, E,
R, S, T, B, C, or mV thermocouple types. A standard thermocouple mini­connector along with screw terminals for bare wire makes connections easy
while providing direct contact with the internal cold junction compensation
circuitry.

When used as a thermocouple simulator, the CL300A provides control
which allow the user to either “step” in increments or decades.

1.1 Customer Service

OMEGA Engineering

Tel: [phone]

Fax: [phone]

www.omega.com

email: [email protected]

1.2 Unpacking

Remove the packing list and verify that all equipment has been received. If
there are any questions about the shipment please call OMEGA at 1-800­826-6342. When the shipment is received 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.

1.3 Safety information

Symbols Used

The following table lists the International Electrical Symbols. Some or all of
these symbols may be used on the instrument or in this manual.

1

Table of Contents

1. Introduction

1.1 Customer Service . . . . . . . . . . . . . . . . .1

1.2 Unpacking . . . . . . . . . . . . . . . . . . . . . . .1

1.3 Safety Information . . . . . . . . . . . . . . . . .1

2. Accessories . . . . . . . . . . . . . . . . . . . . .4

3. Setup Basic/Advanced . . . . . . . . . . . .4

4. Operating Procedure . . . . . . . . . . . . . .5

5. Operating Connection

and Precautions . . . . . . . . . . . . . . . . . .6

6. Battery Save Feature . . . . . . . . . . . . . .7

7. Stepoint Feature . . . . . . . . . . . . . . . . . .7

8. Min/Max Datalogging . . . . . . . . . . . . .7

9. Maintenance . . . . . . . . . . . . . . . . . . . . .8

10. Specifications

. . . . . . . . . . . . . . . . . . . .9

2

Symbol Description

AC (Alternating Current)

AC-DC

Battery

CE Complies with European Union Directives

DC

Double Insulated

Electric Shock

Fuse

PE Ground

Hot Surface (Burn Hazard)

Read the User’s Manual
(Important Information)

Off

On

The following definitions apply to the terms “Warning” and “Caution”.

• “Warning” identifies conditions and actions that may pose hazards to the
user.

• “Caution” identifies conditions and actions that may damage the
instrument being used.

Use the calibrator only as specified in this manual, otherwise injury and
damage to the calibrator may occur.

3

Warning

To avoid possible electric shock or

personal injury:

• Do not apply more than the rated voltage. See specifications for
supported ranges.

• Follow all equipment safety procedures.

• Do not use the calibrator if it is damaged. Before you use the calibrator,
inspect the case. Look for cracks or missing plastic. Pay particular
attention to the insulation surrounding the connectors.

• Select the proper function and range for your measurement.

• Make sure the battery cover is closed and latched before you operate the
calibrator.

• Remove test leads from the calibrator before you open the battery door.

• Inspect the test leads for damaged insulation or exposed metal.

• When using the probes, keep your fingers away from the probe contacts.
Keep your
fingers behind the finger guards on the test leads.

• Do not use the calibrator if it operates abnormally. Protection may be
impaired. When in doubt, have the calibrator serviced.

• Do not operate the calibrator around explosive gas, vapor, or dust.

• Disconnect test leads before changing to another measure or source
function.

• When servicing the calibrator, use only specified replacement parts.

• To avoid false readings, which could lead to possible electric shock or
personal injury, replace the battery as soon as the battery indicator
appears.

Caution

To avoid possible damage to calibrator or to equipment under

test:

• Use the proper jacks, function, and range for your measurement or
sourcing application.

4

2. Accessories

The following items are available for the CL300A calibrator.

Item

P/N

AC adapter/charger PCL-ACA

9V NiCd battery PCL422A-BATT
(must use with above charger)

3. Set-Up Basic/Advanced

FIGURE 1

Before beginning, become familiar with the keypad layout and the
configuration of the input/output jacks. See Figure 1.

In the basic or “as shipped” setup, the CL300A allows the user to step
through all available T/C types (10 plus mV). In certain situations this may
be confusing to infrequent users as to which type to use.

5

The optional advanced setup mode allows a supervisor through password
control to “blank out” or disable unwanted T/C types so that only the proper
T/C types can be selected. The following procedure outlines how this is
done:

1. Hold down the TC TYPE key at power up.

2. The word PASS will be displayed and you need to introduce the

password 123 as follows:
Rotate the knob to 1, press SET key, rotate to 2, press SET, rotate to 3,
press SET.

3. You can toggle through all the thermocouple types by pressing TC TYPE

key.

4. Press SET key for the ones that you want to keep.

5. The last TC type is mV. By pressing TC TYPE key again, you’ll exit from

this mode and return to normal operation.

6. If you missed one, repeat the entire procedure again.

4. Operating Procedure

1. Turn on power and select the desired thermocouple type by depressing the

T/C Select key. Once the desired T/C is selected, it will remain in memory
until a new T/C type is selected.

2. Select either Input or Output mode depending on whether you want to read

a thermocouple or simulate a thermocouple signal.

3. Connect the appropriate thermocouple to the mini-connector or screw

terminals on the top of the CL300A. Note: for best accuracy, allow 3 to 5
minutes for the T/C connector (or wire) to stabilize to the same temperature
as the
connector block.

4. If you are using the CL300A in the output mode use the cursor control keys

to select the decade to be controlled. Note that the cursor is the line under
a specific digit.

6

5. Operating Connections and Precautions

1. When operating in the thermocouple output mode, the CL300A has the

ability to simulate up to 10 T/C types plus mV into devices which
measure thermocouples:

NOTE: If the CL300A is improperly connected to a low impedance load
(either a short or near short) the display will flash.

FIGURE 2

SIMULATING A THERMOCOUPLE OUTPUT

2. When operating in the thermocouple Measure Mode the CL300A can be

used to read the temperature of a thermocouple probe.

In this mode, the CL300A will detect an open circuit should the thermo­couple junction malfunction. In this case, the display will indicate “OL”. It
will also indicate “OL” if no probe is connected in the Input Mode.

FIGURE 3

READING A THERMOCOUPLE PROBE

1Kohm or

greater input

impedance

Thermocouple

device under test

Use thermocouple wire for
the type selected (e.g. if a
"J" T/C is being simulated,
you must use "J" wire.)

Thermocouple
mini-connector

7

6. Battery Save Feature

The CL300A incorporates an Auto Shut Off or Battery Save feature that will
automatically turn off the CL300A after a preset amount of time (up to 30
minutes) The factory default setting is 30 minutes, but can be changed or
disabled by completing the following steps:

1) Turn on the CL300A. Closely watch the display during power up.

2) The display will indicate the amount of time the battery save feature is set

for (off to 30 minutes). Immediately adjust the knob to change the time
period or disable the function.

7. Setpoint Feature

The CL300A allows the user to program up to 3 setpoints for each TC type
(including mV). to set the setpoints complete the following procedure:

1) Turn on the CL300A and select the Source Mode.

2) Select the TC type to be simulated and correct units (either °C or °F).

3) Press to see what is currently stored in each of the 3 set-

points.

4) To store a new value adjust the output to the desired value then press

the key.

5) Repeat steps 3 & 4 until all 3 setpoints are stored.

6) Once the setpoints are stored, press the key to recall the

newly stored setpoints.

7) Each press of the key will increment to the next stored set-

point.

Note: Setpoints are non-volatile and will remain in memory until changed.

8. Min/Max Datalogging

When the CL300A is in the measure mode it will continuously monitor and
store the minimum and maximum values for that particular input. To oper­ate the datalogging feature use the following procedure:

1) Place the CL300A in the measure mode.

2) Connect a thermocouple (or probe).

Recall

Recall

Set

Recall

3) Clear the min/max memory by pressing both keys (min and max) simulta-

neously. The LCD will display “CLR” when the memory is cleared.

4) Allow the unit to log min. and max. for as long as required.

Warning: You may want to disable the Battery Save feature before using
the Datalogging Mode to prevent the CL300A from turning off prematurely.

5) At any time press the min. or max. to display the value stored.

6) Turning off the CL300A or changing modes will clear the memory. Be

sure to record your data before turning off the unit.

9. Maintenance

A. Battery Selection

The CL300A operates on a standard 9V alkaline battery or an optional
rechargeable 9V Ni-Cd battery. For most applications the 9V alkaline bat­tery will suffice; however, in heavy use applications the 9V Ni-Cd may be a
better choice. The 9V Ni-Cd battery supplied by Omega will offer approxi­mately 7 hours of continuous use on a full charge (the alkaline battery will
yield about 25 hours). The optional 1001-9V charger supplied by Omega
will provide an overnight charge rate (10-12 hours) and will also power the
CL300A for bench use while maintaining a float charge on the Ni-Cd bat­tery.

Warning: Never connect the AC adapter/ charger with the 9V alkaline bat­tery installed.

To order the 9V Ni-Cd battery or AC adapter/charger contact
OMEGA Engineering.

B. Input Protection

The CL300A incorporates a fuseless input protection and will tolerate most
misconnections up to 250 VAC or 250 VDC for up to 30 seconds duration.
Because of this protection no fuse is required.

C. Calibration

The CL300A is designed to hold its rated accuracy for a minimum of one (1)
year. This instrument is tested to and meets published specifications. After
final calibration our products are stored in a controlled stock room and con­sidered bonded storage. Depending on environment and severity of use
factory calibration is recommended every one to three years after initial
installation. Contact Omega Engineering’s Customer Service Department
for re-calibration information at 1-800-622-2378 or [email protected]

8

9

10. Specifications

(1 year at 23°C ±5°C; % of reading unless otherwise noted)

Output Voltage

Range -10 to +75.000 mV
Resolution 1 μV
Accuracy ±0.007 % of reading, ±5 μV
Output Impedance >1 Ohm

Input Voltage

Range -10 to +75.000 mV
Resolution 1 mV
Accuracy ±0.007 % of reading, ±5 μV
Input Impedance > 1 MegOhm

Thermocouple Source/Measure

Types J, K, T, E, R, S, B, L, U, C, mV
Resolution

Source ±0.1°C or °F
Measure ±0.01°C or °F

Accuracy

J ±0.5 °C; -210 °C to -100 °C

±0.25 °C; -100 °C to +1,200 °C

K ±0.6 °C; -200 °C to -100 °C

±0.3 °C; -100 °C to +1,000 °C
±0.5 °C; +1,000 °C to +1,372 °C

T ±0.7 °C; -200 °C to -150 °C

±0.3 °C; -150 °C to +400 °C

E ±0.5 °C; -200 °C to -100 °C

±0.2 °C; -100 °C to +1,000 °C

R ±1.8 °C; 0 °C to 250 °C

±1.0 °C; 250 °C to +1,767 °C

S ±1.8 °C; 0 °C to 250 °C

±1.0 °C; 250 °C to +1,767 °C

B ±1.7 °C; 600 °C to 1,000 °C

±1.2 °C; 1,000 °C to 1,820 °C

L ±0.5 °C; -200 °C to -100 °C

±0.4 °C; -100 °C to +900 °C

U ±0.7 °C; -200 °C to 0 °C

±0.3 °C; 0 °C to +600 °C

C ±0.4 °C; 0 to °C 1,000 °C

±0.7 °C; 1,000 °C to +1,800 °C
±1.2 °C; +1,800 °C to +2,316 °C

CJC Temperature Offset

±0.05 °C/°C outside of 23±5 °C

Warm-up Time 1 minute to specification
Environmental

Operating -10 °C to +55 °C
Storage -20 °C to +70 °C

Power Requirements

Battery 9 Volt alkaline; 006P/ IEC 6F22/

NEDA1604
Optional NiCad
Optional AC adapter/charger

Mechanical Dimensions

5.7" x 3.15" x 1.43"
(14.47 cm x 8.00 cm x 3.63 cm)

Weight 12 ounces (340 grams)

Notes: 1.Temperature standard ITS-90.

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,
includin

g but not limited to misha ndlin g, improper interfacing, operation outside of design limits,
improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of
having been tampered with or shows evidence of having been damaged as a result of excessive corrosion;
or current, heat, moisture or vibration; improper specification; misapplication; misuse or other operating
conditions outside of OMEGA’s control. Components in which wear is not warranted, include but are not
limited to contact points, fuses, and triacs.

OMEGA is pleased to offer suggest ions 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.
company will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR
REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF
TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION O F
LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total liability of
OMEGA with respect to this order, whether based on c ontract, warra nty, neg ligence,
indemnification, strict liability or otherwise, shall not excee d the purchase price of the
co mpo ne nt upo n whi c h l i abi lity is based. In no event s hal l OMEGA be lia b le for
consequential, incidental or special damages.

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

OMEGA warrants only that the parts manufactured by the

as a “Basic

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

RETURN REQUESTS/INQUIRIES

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 2017 OMEGA ENGINEERING, INC. All rights reserved. This doc ument 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 the 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!

Shop online at omega.com

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