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Temperature Calibrator

CL20 Series   
3 year warranty CE OmegaCare
high precision temperature calibrator
CL20 Series:Temperature Calibrator
Click for larger image.
0.5F Accuracy Over the Range of 18C to 28C (64F to 82F)
NIST Traceable Certificate of Calibration
Simulates and Measures Thermocouples, RTDs, Thermistors and Ohms
0.1F/0.1C Resolution
10 Memory Locations for Saving Meter Readings and/or Calibrator Outputs
Step Calibrator, Meter Hold, Thermometer Functions
Ramp Function (Models CL25 and CL27)
Review PDF File (Link Below) for Full Specifications & Features

View related products - Precision Calibration Equipment and Ice Point References

Click to scroll below to order See Specs PDF Manuals View a printer friendly page

The OMEGA CL20 series calibrator/ thermometers simulate, measure and record RTD, ohm, thermocouple and thermistor signalsall in one meter. They outperform the competition in the lab and on the factory floor with 0.3C (0.5F) accuracy and in ambient temperatures from 18 to 28C (64 to 82F).

This powerful handheld meter allows the user to calibrate in the field as well as in the lab and offers many additional functions that translate into costeffectiveness, increased productivity and long-lasting versatility and reliability.

The 5-digit LCD display indicates all active functions and allows users to have 0.1 resolution in both Celsius and Fahrenheit. This convenient display takes the guesswork out of which sensor has been selected, displaying C or F and operating mode.

Programming a CL20 series calibrator is a snap. The keypad allows direct entry of calibrator setpoints. Setpoints can also be entered from an outside source by inputting temperatures or voltages through the thermometer mode. There are no reprogramming hassles. The program wont be lost when the meter is shut off. All values are retained and can be retrieved for fast repeat use.

These calibrators feature 10 memory locations that can instantly recall any programmed value, and the step function lets the user run through the test points at the push of a button. This efficient feature saves time by allowing the user to simply enter the output value and calibrate.

The ramp function of Models CL25 and CL27 makes calibrating switch and alarm setpoints quick and easy. By entering the upper limit, lower limit and step size, the meter automatically ramps between the limits. There is also a manual ramp function.

No matter what thermocouple type is used, one of these meters can handle it. Features to choose from include 100 ohm and 1000 ohm RTD and 2252 ohm thermistor capabilities.

Need to comply with ISO-9000 reporting specifications? These meters can help! All conform to the temperature/voltage tables of the National Institute of Standards and Technology (N.I.S.T.). OMEGA provides a free NIST Traceable Certificate of Calibration for your records. Since ISO-9000 requires that calibration be done at the equipment site, these meters are a perfect choice. With 0.3C (0.5F) accuracy in an ambient temperature range of 18 to 28C (64 to 82F), youre not confined to the lab. Take it everywhere. The ABS plastic case protects it from dust and dirt.


Display: 5-digit LCD custom indicators for calibration type, units hold, recall, store, operating mode, bal, loaded memory locations (up to 10) Keypad: Momentary switches with tactile feedback, select power, thermocouple type, units, resolution, hold, store/recall, stop/clear, operating mode
Configuration Retention: selected operating mode, thermocouple type, units, resolution and memory contents retained on power off
Diagnostics: low battery, open input, invalid keypad entry, out of range, internal hardware fault
Accuracy: see ordering matrix for details
Ambient Temperature: 0 to 50C (32 to 122F), 0 to 90% RH
Reading Rate: 1 per second
Input Current: 50 nA typical(meter mode)
Output Load: 100 ohms, min. (calibrator mode)
Max. Common Mode Voltage: 42 V peak to earth ground
Power: 9 Vdc battery, alkaline, included
Battery Life: 16 hrs alkaline
Dimensions: 178 H x 74 W x 28 mm D (7.0 x 2.9 x 1.1")
Weight: 340 g (12 oz)
  CL20 Series Temperature Measurement and Calibration Range
K200 to 1371C-328 to 2502F0.1
J-210 to 760C-346 to 1400F0.1
T-200 to 399C-328 to 752F0.1
E-230 to 999C-382 to 1832F0.1
N200 to 1299C-328 to 2372F0.1
B499 to 1815C932 to 3308F0.1
R0 to 1768C32 to 3214F0.1
S0 to 1768C32 to 3214F0.1
G299 to 2315C572 to 4201F0.1
C0 to 2315C32 to 4201F0.1
D0 to 2315C32 to 4201F0.1
RTD-200 to 849C-328 to 1562F0.1
Series 400
-40 to 150C-40 to 302F0.1

CL26 and CL27 Resistance Measurement
and Calibration Outputs
Ohms RangeResolutionModels
0-100Ω0.01ΩCL26 & CL27

TC TypesPlatinum
0 to:
Accuracy Calibrator
& Thermometer
CL23AK, J, T------------±0.3C from -46 to 677C
0.04% over 677C
±0.5C under -46C
CL24K, J, T, E------------0.04% over 677C
±0.5C under -46C
CL25K,J,T,E,N,R,S,B,G,C,D------------±0.3C full scale K,J,T,E,N
0.8C full scale B,R,S,G,C,D
CL26K, J, T ,E100Ω400 Series
100 kΩ

±0.3C from -46 to 677C
0.04% over 677C
±0.5C under -46C
Ωs: 0.04% of range
±0.3C RTD & thermistor
±0.3C full scale K,J,T,E,N
0.8C full scale B,R,S,G,C,D
Ωs: 0.02% of range
0.1C full scale RTD

To Order (Specify Model Number)    
expand list What Other People Bought: When you see this icon, click on it to expand a list of products that other people have bought when they purchased this model.
 Part Number   Availability   Price   Description    Qty.
Click to expand/minimize a list of what others bought with the CL23A  CL23A In Stock   $595.00    Handheld Meter and Calibrator for K, J, T Thermocouples  
    CL24 In Stock   $625.00    Handheld Meter and Calibrator for K, J, T, E Thermocouples  
    CL25 In Stock   $825.00    Handheld Meter and Calibrator for K,J,T,E,N,R, S,B,G,C,D Thermocouples  
Click to expand/minimize a list of what others bought with the CL26  CL26 In Stock   $975.00    Handheld Meter and Calibrator for K,J, T ,E thermocouples, RTD & thermistors  
Click to expand/minimize a list of what others bought with the CL27  CL27 In Stock   $1,095.00    Handheld Meter and Calibrator K,J,T,E,N,R, S,B,G,C,D Thermocouples & Platinum RTD's 100 Ohm & 1000 Ohm  
Click to expand/minimize a list of what others bought with the HH22-AC  HH22-AC In Stock   $95.00    NiMH battery and adaptor, 115 V  
    CL-300-CABLE-K-2 In Stock   $10.00    Spare calibration cable for K thermocouple, 2', 24AWG, SMP to spade lug  
Click to expand/minimize a list of what others bought with the CL-300-CABLE-K-10  CL-300-CABLE-K-10 1 Week   $20.00    Spare calibration cable for K thermocouple, 10', 24AWG, SMP to spade lug  
Click to expand/minimize a list of what others bought with the CL-300-RSC-K-2  CL-300-RSC-K-2 1 Week   $20.00    Spare calibration cable for K thermocouple, 2' retractable, expands to 10', SMP to spade lug  
    TA4F In Stock   $10.00    Spare calibration connector for use in making calibration cable for RTD or Thermistor signals  
All dollar amounts on this site are shown in US currency.

 Note: Each CL20 handheld meter is supplied as a complete kit with 4 beaded wire thermocouples (J, K, T, or E), 4 TAS standard to mini thermocouple adaptors (J,K,T,E), 4 calibration cables (J, K, T, or E), shock resistant holster, belt clip, integral tilt stand/handle, wrist strap, rugged carrying case, and certificate of calibration. The CL26 and CL27 handheld meter also includes one 3-wire RTD calibration cable, one 2-wire resistance cable and one TA4F RTD adaptor. The CL23A handheld meter does not include type E thermocouple, adaptor or cable. To order additional spare thermocouple calibration cables of different type, change "K" in part number to desired type, e.g. CL-300-CABLE-T-2.
 Ordering Example: (1) CL24 Handheld Meter, J/K/T/E calibration/thermometer kit, $625.00

Keywords:High Precision Handheld Meter, Calibrator / Thermometer, Thermocouples, RTD's and Thermistors, Models CL23A, CL23EC, CL24, CL25, CL25EC, CL26, CL27, CL27EC, CL28MA, CL466, CL6503, calibration labs, calibration, laboratories, calibrator, calibrators, simulator, positive temperature coefficient semiconductor strain gage strain gage sensitivity usb proximity sensor

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