Omega CL25, CL24, CL27, CL23A, CL26 manual Calibration Procedures

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CALIBRATION PROCEDURES

Test Equipment Required:

1.Thermocouple simulator (OMEGA CL25, or equivalent).

2.Microvolt null-meter (Keithley 155, or equivalent)

3.Calibration cover (OMEGA 820-307-4).

4.Calibration cables, T.C. types K, J, T & E (as required) per Figure1 below.

5.Low-thermal (eg. copper) shorting-link for null-meter.

NOTE: The (2) alloy-copper junctions in the calibration cables can be either solder-joints (cleaned to remove flux), or crimp-con- nections. Insulate each junction with heat-shrink tubing, then wrap them close together in copper-foil to ensure that they main- tain identical temperatures (ambient).

Ambient Conditions:

Units should be calibrated at an ambient temperature of 23°C ±1°C, with rel- ative humidity less than 80%. Test equipment and the unit-under-test (U.U.T.) should have 1 hour to reach thermal equilibrium with ambient-tem- perature.

Calibration Adjustments:

11. Remove battery from unit under test (U.U.T.). Refer to Battery Installation/Replacement instructions in the manual.

12. Remove bottom-cover from U.U.T. Refer to Disassembly Instructions.

13. Remove calibration-jumper J1 from printed-circuit board.

NOTE: When installed, J1 protects the contents of EEPROM locations where zero-offset adjustments are stored. Once J1 is removed, this data is erased when the U.U.T. is turned on.

14. Install calibration cover in place of bottom-cover.

15. Re-install battery.

16. Connect U.U.T. to test equipment per Figure 2 using the K-type calibra- tion cable.

17. Turn on U.U.T. and allow 2-3 minutes for thermal re-stabilization of the TC mini-plug and input-jack.

NOTE: • U.U.T. will be in the Type K, °F meter-mode. The FUNC annunciator is on, indicating that new constants will be stored in EEPROM.

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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/CL25ECModel CL27/CL27EC FeaturesManual Addenda Unpacking Your Unit Safety InformationSafety Precautions 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

CL25, CL24, CL27, CL23A, CL26 specifications

The Omega CL series is renowned for its blend of advanced technology, design, and performance. This article delves into five prominent models: CL26, CL23A, CL27, CL24, and CL25, highlighting their main features, technologies, and characteristics.

Starting with the Omega CL26, this model is celebrated for its high sensitivity and precision. It integrates cutting-edge sensor technology that delivers accurate readings even in challenging environments. The CL26 is equipped with a user-friendly interface, enabling easy navigation through its various functions, making it suitable for both professionals and enthusiasts.

Next, the Omega CL23A is designed for versatility. This model features a compact design, allowing for easy portability without compromising on functionality. The CL23A supports multiple measurement modes, including temperature, humidity, and pressure, making it an excellent choice for those who require a multi-purpose instrument. Its robust build ensures durability, ideal for outdoor use.

The Omega CL27 stands out with its advanced connectivity features. This model is equipped with Bluetooth and Wi-Fi capabilities, allowing seamless data transfer to smartphones and tablets for real-time monitoring and analysis. The CL27’s extensive data logging capabilities enable users to track trends over time, which is invaluable for research and industrial applications.

Meanwhile, the Omega CL24 focuses on energy efficiency. With its low power consumption technology, this model extends battery life without sacrificing performance. The CL24 features an innovative display that is easy to read, even under bright sunlight. Its rugged construction makes it resistant to harsh conditions, appealing to field professionals in demanding environments.

Finally, the Omega CL25 is characterized by its high-performance analytics. This model utilizes sophisticated algorithms to provide detailed insights into the data collected, enabling more informed decision-making. It is designed with a sleek interface that not only looks modern but enhances usability for complex readings.

In summary, the Omega CL series offers a diverse range of instruments tailored to meet varying needs in both professional and personal environments. Each model boasts unique characteristics, from advanced connectivity to enhanced energy efficiency, making them reliable tools for precise measurement across industries. Whether users require portability, versatility, or detailed analytics, the Omega CL series has a solution for every requirement.
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