Omega CL26, CL24, CL25, CL27, CL23A manual

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3.Select the calibrator mode (“CALIB” on display) by pressing the CALIB/METER function button.

4.Select type K thermocouple (“K” on display) by pressing the SENSOR SELECT function button until type K is reached.

5.Select the tenth degree display with a digit appearing after the decimal point on the display) by pressing the 0.0.1 function button.

6.Select °F (“°F” on display) by pressing the °F °C function button.

7.Attach the Alloy Mode Calibrator Verification Cables per Fig. 12 & 13. If you are using a Type K Thermocouple Temperature Simulator ITS-90 you will use the regular set up. If you are using a Precision Voltage Source use the alternate set up. When performing the following proce- dure using a Precision Voltage Source with the alternate set up, any- where a temperature is transmitted (output) by the Thermocouple Temperature Simulator, you should adjust the Voltage Source to the equivalent voltage as listed by a Type K N.I.S.T. ITS-90 Thermocouple Reference Table. (Example: 32.0 °F would equal 0.000 mV)

8.Press the CHANGE function button and the numerical display will blink and “NUM” will appear on the display.

9.Press 3 2 0 buttons and then press the ENTER function button. “NUM” will disappear and “32.0 °F” will appear, not blinking.

10.Adjust the Thermocouple Temperature Simulator to 32.0 °F.

00.Note: The reading on the voltmeter should read null. 0.000 mV. Adjusting the CL25 to any temperature and adjusting the Temperature Simulator to the same temperature should result in a null, or 0.000 mV on the volt- meter.

11.Remove the Alloy Mode Calibrator Verification Cable from all equipment.

12.The Alloy Mode verification is now complete. Press the OFF function but- ton to turn the unit off.

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Contents
User’sGuide Omega.comTM Table of Contents General Information Common SpecificationsTemperature Coefficient Page Model CL25/CL25EC Unique SpecificationsModel CL23A/CL23EC Model CL24Features Manual AddendaModel CL27/CL27EC Safety Information Safety PrecautionsUnpacking Your Unit Page Battery Installation Battery INSTALLATION/REPLACEMENTOperation with Rechargeable Battery Memory BackupInitial Turn on Diagnostics and Error MessagesProblem Likely Cause Operating InstructionsKeypad 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 FunctionAmbient Conditions Service InformationCalibration Procedures Thermocouple Calibration Test Equipment RequiredPage Calibration Adjustments Output Adjust Reading Meter-Mode Zero & Gain Adjustments Sensor StepInput Adjust Reading Calibrator-Mode Zero & Gain Adjustments SensorCalibration Setup, Copper Mode Test Equipment Required Resistance CalibrationResistance Calibration Setup RTD-100 390.26Ω RTD-Thermistor Sensor Unit Step Output Input Adjust Verify ReadingInput Adjust Verify Reading Calibration of Meter-Mode Resistance FunctionsCalibration 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