Omega CL23A, CL24 Operating Instructions, Diagnostics and Error Messages, Problem Likely Cause

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OPERATING INSTRUCTIONS

1. DIAGNOSTICS AND ERROR MESSAGES

Unit self-diagnostics provide fault condition readouts which are described below:

PROBLEM:

LIKELY CAUSE:

 

Blank display, unit does not

(1)

Improper battery installation.

power-up.

(1)

Check battery polarity.

 

(2)

Dead battery.

 

BAT Annunciator.

(1)

Low battery voltage, install a new

 

 

battery. If problem persists, con-

 

 

sult factory.

 

Display reads OPEN.

(1)

No thermocouple, RTD or thermis-

 

 

tor is plugged into the meter input.

Display reads E1 momentarily.

(1)

This indicates that an invalid key-

 

 

pad entry has been made. Review

 

 

keystroke sequence, or consult

 

 

manual for input instructions.

Display reads E2 momentarily.

(1)

Attempt made to activate non-

 

 

installed

ramp function. NOTE:

 

 

RAMP

Function

enabled on

 

 

Models CL25 and CL27 only.

Display reads HI.

(1)

Meter-mode input-temperature

 

 

exceeds rating of selected sensor.

 

(2)

Calibrator-mode

keypad-entry

 

 

exceeds rating of sensor type.

Display reads LO.

(1)

Meter-mode input-temperature too

 

 

low for accurate measurement.

 

(2)

Calibrator-mode keypad-entry too

 

 

low for accurate simulation.

2. INITIAL TURN ON

Turn on the instrument by depressing the ON-OFF keyswitch once (Figure 2). At power-up, the unit first performs a display test. All segments and annunciators of the liquid crystal (LCD) are momentarily turned on for visual confirmation by the user (Figure 3).

NOTE: In case of missing or poor-contrast segments, contact factory.

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Contents
User’sGuide Omega.comTM Table of Contents General Information Common SpecificationsTemperature Coefficient Page Model CL23A/CL23EC Unique SpecificationsModel CL24 Model CL25/CL25ECManual Addenda FeaturesModel CL27/CL27EC Safety Precautions Safety InformationUnpacking Your Unit Page Battery Installation Battery INSTALLATION/REPLACEMENTOperation with Rechargeable Battery Memory BackupProblem Likely Cause Diagnostics and Error MessagesOperating Instructions Initial Turn onKeypad OPR Meter Mode Operation Thermocouples Set-UpHold Meter Mode Operation RTD, Thermistor & Ohms Set-UpData Logging and Recall To Recall Readings To Save ReadingsCalibrator Mode Operation Thermocouples Set-Up To Erase Data Locations Meter ModeCHANGE/ENTER, 2, 1, 2, 0, CHANGE/ENTER Calibrator Mode Operation RTD, Thermistor & Ohms Set-UpWire Resistance Simulation To Store Outputs Storage and Recall of Calibrator SettingsTo Recall Outputs To Erase Set-Up Locations Calibrator ModeRamp Function CL25 and CL27 Step FunctionCalibration Procedures Service InformationThermocouple Calibration Test Equipment Required Ambient ConditionsPage Calibration Adjustments Input Adjust Reading Meter-Mode Zero & Gain Adjustments Sensor StepCalibrator-Mode Zero & Gain Adjustments Sensor Output Adjust ReadingCalibration Setup, Copper Mode Test Equipment Required Resistance CalibrationResistance Calibration Setup RTD-100 390.26Ω Input Adjust Verify Reading Output Input Adjust Verify ReadingCalibration of Meter-Mode Resistance Functions RTD-Thermistor Sensor Unit StepCalibration Verification Equipment Required Model Software RevisionPage Page Alloy Mode Verification Procedure for Thermocouple Functions Page Mechanical Parts Diagram Calibration Procedures Page Page Page USAWARRANTY/DISCLAIMER Temperature