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User’s Guide

CL23A, 24, 25, 26, 27

Digital Calibrator/Thermometer

Servicing North America:

USA: One Omega Drive, Box 4047

ISO 9001 Certified Stamford, CT 06907-0047

Tel: (203) 359-1660 FAX: (203) 359-7700

e-mail: [email protected]

Canada: 976 Bergar

Laval (Quebec) H7L 5A1

Tel: (514) 856-6928 FAX: (514) 856-6886

e-mail: [email protected]

For immediate technical or application assistance:

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

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 and

Latin America: Tel: (95) 800-TC-OMEGASM FAX: (95) 203-359-7807

En Espan˜ol: (203) 359-1660 ext: 2203 e-mail: [email protected]

Servicing Europe:

Benelux: Postbus 8034, 1180 LA Amstelveen, The Netherlands

Tel: (31) 20 6418405 FAX: (31) 20 6434643

Toll Free in Benelux: 06 0993344

e-mail: [email protected]

Czech Republic: Ostravska 767, 733 01 Karvina

Tel: 42 (69) 6311899 FAX: 42 (69) 6311114

e-mail: [email protected]

France: 9, rue Denis Papin, 78190 Trappes

Tel: (33) 130-621-400 FAX: (33) 130-699-120

Toll Free in France: 0800-4-06342

e-mail: [email protected]

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

Tel: 49 (07056) 3017 FAX: 49 (07056) 8540

Toll Free in Germany: 0130 11 21 66

e-mail: [email protected]

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: 44 (1455) 285520 Tel: 44 (161) 777-6611

FAX: 44 (1455) 283912 FAX: 44 (161) 777-6622

Toll Free in England: 0800-488-488

e-mail: [email protected]

omega.com

OMEGA

OMEGAnetSM On-Line Service Internet e-mail

http://www.omega.com [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.

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

TABLE OF CONTENTS

General Information......................................................................... 2

Common Specifications................................................................... 2

Unique Specifications...................................................................... 5

Features........................................................................................... 6

Manual Addenda ............................................................................. 6

Unpacking Your Unit........................................................................ 7

Safety Information ........................................................................... 7

Safety Precautions .......................................................................... 7

Battery Installation/Replacement..................................................... 9

Memory Backup.............................................................................. 10

Operation with Rechargeable Battery............................................. 10

Operating Instructions..................................................................... 11

11. Diagnostics and Error Messages...................................... 11

12. Initial Turn On................................................................... 11

3. Meter Mode Operation (Thermocouple) ........................... 13

14. Meter Mode Operation (RTD, Thermistor, Ohms)............ 14

15. Data Logging & Recall...................................................... 15

16. Calibrator Mode Operation (Thermocouples)................... 17

17. Calibrator Mode Operation (RTD, Thermistor, Ohms) ..... 18

18. Storage and Recall of Calibrator Settings ........................ 20

9. Step Function.................................................................... 22

10. Ramp Function ................................................................. 22

Service Information......................................................................... 23

11. Calibration Procedures ..................................................... 23

12. Calibration Verification...................................................... 32

13. Mechanical Parts Diagram................................................ 38

Warranty......................................................................................... 45

Limitation of Warranty..................................................................... 45

Statement of Calibration................................................................. 45

GENERAL INFORMATION

This manual provides operating instructions and maintenance information for

five temperature instruments. These instruments are high performance cali-

brator-thermometers capable of simulating and measuring a wide-variety of

sensors. In addition, features such as data storage and ramping further

enhance their versatility.

It is recommended that you read this manual thoroughly, especially the sec-

tions on safety, prior to operating these instruments.

COMMON SPECIFICATIONS

THERMOMETER INPUTS: THERMOCOUPLE; Miniature TC jack. RTD, OHMS,

THERMISTOR; T-series instrumentation connector.

CALIBRATOR OUTPUTS: THERMOCOUPLE; Miniature TC jack. RTD, OHMS,

THERMISTOR; T-series instrumentation connector.

THERMOCOUPLE TYPES: K, J, T, E, N, B, R, S, G, C, D.

RTD TYPES: 1100Ωplatinum (∝= 0.00385)

1000Ωplatinum (∝= 0.00385)

THERMISTOR TYPE: 2252Ω(YSI Series 400).

RANGES: RTK; –200°C to 1372°C, –328°F to 2502°F

RTJ; –210°C to 760°C, –346°F to 1400°F

RTT; –200°C to 400°C, –328°F to 752°F

RTE; –230°C to 1000°C, –382°F to 1832°F

RTN; –200°C to 1300°C, –328°F to 2372°F

RTB; 500°C to 1820°C, 932°F to 3308°F

RTR; 0°C to 1768°C, 32°F to 3214°F

RTS; 0°C to 1768°C, 32°F to 3214°F

RTG; 300°C to 2316°C, 572°F to 4201°F

RTC; 0°C to 2316°C, 32°F to 4201°F

RTD; 0°C to 2316°C, 32°F to 4201°F

RTD; –200°C to 850°C, –328°F to 1562°F

THERMISTOR; –40°C to 150°C, –40°F to 302°F

OHMS; 0-999.99Ω

OHMS; 0-9,999.9Ω

OHMS; 0-99,999Ω

ACCURACY (18°C to 28°C ambient, 2 years)*:

K, J, T, E, N; ± 0.5°F (rdg ≥–50°F)

K, J, T, E, N; ±1.0°F (rdg < –50°F)

B, R, S, G, C, D; ±1.7°F

RTD; ±0.2°F (rdg ≥– 50°F)

RTD; ±0.5°F (rdg < – 50°F)

RTD; ±0.2°F ±0.04% rdg (meter mode)

THERMISTOR; ±0.5F

OHMS; ±0.02% range

* Exclusive of sensor errors, and lead resistance induced errors.

RESOLUTION: TEMPERATURE; 0.1°/1° F/C

RESOLUTION: OHMS; 0.01Ω/0.1Ω/1Ω

REPEATABILITY (1 week at constant ambient temperature):

K, J, T, E, N; ±0.2°F typ.

B, R, S, G, C, D; ±1.0°F typ.

RTD, THERMISTOR; ±0.1°F typ.

OHMS; ±0.01% rng typ.

TEMPERATURE COEFFICIENT:

From 18°C to 28°C, included in accuracy specifications.

From 0°C to 18°C, and 28°C to 50°C:

K, J, T, E, N; ±(0.002% rdg + 0.03°C)/°C

B, R, S, G, C, D; ±(0.002% rdg + 0.1°C)/°C

RTD, THERMISTOR, OHMS; ±(0.002% rdg + 0.004% rng)/°C

METER-MODE INPUT-CURRENT (THERMOCOUPLES): 50nA typ.

METER-MODE READING-RATE: 1 reading/second typ.

METER-MODE EXCITATION-CURRENTS:

100ΩRTD; <2mA

1000ΩRTD; <200µA

999.99Ω; <2mA

9999.9Ω; <200µA

99999Ω; <50µA

THERMISTOR; T ≤113°F <50µA

T> 113°F, <2mA

CALIBRATOR MODE OUTPUT LOAD (THERMOCOUPLES): 500Ωmin.

CALIBRATOR-MODE EXCITATION-CURRENTS:

100ΩRTD; 0.5 – 1mA (0.1 – 2mA typ.)

1000ΩRTD; 50 – 100µA (10-200µA typ.)

999.99Ω; Same as 100ΩRTD

9999.9Ω; Same as 1000ΩRTD

99999Ω; 10 – 20µA (1 – 20µA typ.)

THERMISTOR; T ≤113°F, 10 – 20µA

T> 113°F, 0.5 – 1mA

MAXIMUM COMMON MODE VOLTAGE: 42V peak to earth.

KEYPAD: 12 momentary switches with tactile feedback select;

• On/Off

• Change/Enter

• Clear/–0

• Sensor Select/1

• °F/°C/2

• Resolution/3

• Operate/4

• Store/5

• Recall/6

• Calibrator/Meter/Up Ramp/7

• Calibrator Step/Down Ramp/8

• Calibrator Ramp/Meter Hold/9

DISPLAY: 5 digit LCD, 0.4" height, and decimal point. Annunciators;

• Loaded Memory Locations (10 for data storage, 4 for ramp parameters)

• Low Battery (BAT)

• Number Change Mode (NUM)

• Calibrator Mode (CALIB)

• Meter Mode (METER)

• Operate Mode (OPR)

• Store Mode (STO)

• Recall Mode (RCL)

• Meter Hold (HOLD)

• Scale (°F/°C)

• Sensor Type

POWER OFF CONFIGURATION RETENTION: Instrument retains last selected;

• Sensor Type

• °F/°C Scale

• 0.1°/1° Resolution

• Calibrator/Meter Mode

• Memory Contents (data storage and ramp parameters).

DIAGNOSTICS: Display codes indicate following conditions;

• 'BAT': Low Battery

• 'OPEN': Open Input Thermocouple, RTD or Thermistor.

• 'E-1' (momentary): Invalid Keypad Entry

• 'E-2' (momentary): Ramp Function Not Installed

• 'HI': Temperature Reading or Keypad Entry Exceeds Rating

• 'LO': Temperature Reading or Keypad Entry Too Low For Accuracy

• LCD Test: During power-up, all segments and annunciators enabled momentarily

ENVIRONMENTAL LIMITS FOR OPERATING: 0°C to 50°C, less than 90% relative

humidity (R.H.) up to 35°C; reduce R.H. limit by 3%/°C from 35°C to 50°C.

ENVIRONMENTAL LIMITS FOR STORAGE: –35°C to 60°C, less than 95% relative

humidity (R.H.) up to 35°C; reduce R.H. limit by 3%/°C from 35°C to 60°C.

POWER: 9 volt alkaline battery (NEDA 1604A).

BATTERY LIFE, CONTINUOUS: 10 hrs. typical, alkaline; 3 hrs typical, Ni-Cd

(rechargeable).

BATTERY INDICATOR: Display indicates BAT when less than 10% of life remains.

DIMENSIONS, WEIGHT: 7.0" ×2.9 × 1.1". Net weight 12 oz.

UNIQUE SPECIFICATIONS

NOTE: The specifications below are specific to the model(s) as identified by model

number. The difference specifications are in addition to the OVERALL SERIES SPEC-

IFICATIONS found on pages 2-5.

•MODEL CL23A/CL23EC:

SENSOR SELECTION: K, J, T/K, J, T, L Thermocouples

ACCURACY: (18°C to 28°C ambient, 2 years): ±0.5°F (rdg ≥–50°F).

±0.04% rdg (rdg > 1250°F)

±1.0°F (rdg < –50°F)

TEMPERATURE COEFFICIENT: 18°C to 28°C; included in accuracy specifications.

From 0°C to 18°C, and 28°C to 50°C; less than ±(0.006% rdg +0.03°C)/°C.

RAMP FUNCTION: Not Included.

BATTERY LIFE, CONTINUOUS: 16 hrs typical, alkaline; 4 hrs typical, Ni-Cd

(rechargeable).

•MODEL CL24:

SENSOR SELECTION: K, J, T, E Thermocouples

ACCURACY: (18°C to 28°C ambient, 2 years): ±0.5°F (rdg ≥–50°F).

±0.04% rdg (rdg > 1250°F)

±1.0°F (rdg < –50°F)

TEMPERATURE COEFFICIENT: 18°C to 28°C; included in accuracy specifications.

From 0°C to 18°C, and 28°C to 50°C; less than ±(0.006% rdg +0.03°C)/°C.

RAMP FUNCTION: Not Included.

BATTERY LIFE, CONTINUOUS: 16 hrs typical, alkaline; 4 hrs typical, Ni-Cd

(rechargeable).

•MODEL CL25/CL25EC:

SENSOR SELECTION: K, J, T, E, N, B, R, S, G, C, D/K, J, T, E, N, B, R, S, L, C,

D Thermocouples

RAMP FUNCTION: Included.

BATTERY LIFE, CONTINUOUS: 16 hrs typical, alkaline; 4 hrs typical, Ni-Cd

(rechargeable)

•MODEL CL26:

SENSOR SELECTION: K, J, T, E Thermocouples

100ΩPlatinum RTD

2252ΩThermistor

1,000Ω/100,000ΩResistance

ACCURACY: (18°C to 28°C ambient, 2 years): ±0.5 °F (rdg ≥–50°F).

±0.04% rdg (rdg > 1250°F)

±1.0°F (rdg < –50°F)

OHMS; ±0.04% range

TEMPERATURE COEFFICIENT: 18°C to 28°C; included in accuracy specifications.

From 0°C to 18°C, and 28°C to 50°C.

K, J, T, E; ±(0.006% rdg + 0.03°C)/°C

RTD, THERMISTOR, OHMS; ±(0.006% rdg +0.012% rng)/°C

RAMP FUNCTION: Not Included.

•MODEL CL27/CL27EC:

SENSOR SELECTION: K, J, T, E, N, B, R, S, G, C, D/K, J, T, E, N, B, R, S, L, C,

D Thermocouples

100Ω/1000ΩPlatinum RTD

1,000Ω/10,000ΩResistance

RAMP FUNCTION: Included.

FEATURES

• Combination calibrator, thermometer and datalogger.

• Function selection and numeric data entered via 12 keyswitch color coded

keypad.

• Keyswitches have tactile feedback.

• 5 digit LCD includes annunciators for operating modes.

• Up to 11 thermocouple types, 2 RTD types, and thermistor.

• 1° or 0.1° resolution over temperature range of each sensor.

• °F and °C scales.

• Reading hold mode.

• 10 memory locations for saving meter readings and/or calibrator outputs.

• Step mode for quick sequential recall of calibrator outputs from memory.

• Manual/automatic ramping for testing controller setpoints.

• Conforms to ITS-90 thermocouple tables.

• Dust proof, splash proof, drop proof construction.

• Built-in tilt stand/hanger for bench use or hands free field measurements.

• User friendly programming.

• Retains data and programming, even when turned off.

• Performs diagnostic tests and indicates fault conditions.

• Low battery and open sensor indications.

MANUAL ADDENDA

Improvements or changes to this manual will be explained on an addendum

included with the instrument. All change information should be incorporated

immediately into the appropriate places in the manual.

UNPACKING YOUR UNIT

Remove the Packing List and verify that you have received all equipment. If

you have any questions about the shipment, please call the OMEGA

Customer Service Department at 1-800-622-2378 or (203) 359-1660.

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.

Make sure that you have the following items in the packing box.

• 1 CL20 Series Calibrator and Holster.

• 1 Operator’s Manual

• 1 NIST Certificate

• 1 Accessories Kit

SAFETY INFORMATION

SAFETY SYMBOLS AND TERMS

The symbol on the instrument denotes that the user should refer to the

operating instructions.

The WARNING used in this manual explains dangers that could result in

personal injury or death.

The CAUTION used in this manual explains hazards that could damage

the instrument.

SAFETY PRECAUTIONS

WARNING

These instruments are intended for use by qualified person-

nel trained in the safe operation of electronic testing equip-

ment. Read the instruction manual thoroughly before using,

to become familiar with the instrument's operations and

capabilities.

▲▲

WARNING

Do not touch a temperature probe sheath when measuring

excessively high or low temperatures, or toxic substances.

WARNING

Do not attempt to measure temperatures beyond the range of

the probe being used. Probe damage or personal injury

could result from exceeding a probe's maximum temperature

rating.

WARNING

The American National Safety Institute (ANSI) states that a

shock hazard exists when probes or sensors are exposed to

voltage levels greater than 42VDC or 42V peak AC. Do not

use this instrument where voltages at the measurement sur-

face exceed these levels.

WARNING

Do not substitute a metal part for the nylon screw in the rear

case. Doing so will degrade electrical isolation of the case.

WARNING

The battery is accessible through a cover on the back of the

instrument. To avoid electrical shock hazard, disconnect all

temperature probes and sensors and turn the unit off before

removing the cover.

WARNING

Never use this instrument or any probe or sensor inside a

microwave oven.

CAUTION

Avoid making sharp bends in probe or sensor lead wires.

Bending lead wires at a sharp angle can damage the wire

causing probe failure.

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