Skip to main content
Press Enter
OMEGA

CL541-Plus 4 Thermocouple Types and Millivolt Calibrator

Automated Thermocouple Calibrator

This product is no longer available. Contact us at 800-567-8686 for alternative solutions.

Have questions? We're here to help!
Have questions? We're here to help!

 With the CL541-PLUS you can check and calibrate all your thermocouple instruments and measure thermocouple sensors. Automatic indication of connections on the display for simple hookups. Take it without worry into the shop, plant or field. It comes protected with a rubber boot and rugged, low profile switch. Easy to operate even in the dark areas of the plant with the backlit display. Stop carrying around a millivolt source and thermocouple tables, you can calibrate directly in temperature (°C and °F).

 
The CL541-PLUS works with the T/Cs you use including types J, K, T and E. Easily set any value quickly to within 0.1° with the adjustable digital potentiometer "DIAL" plus store any three temperatures for instant recall. Calibrate quickly with automatic output stepping. Choose between 2, 3, 5, 11 and 21 steps to automatically increment the output in 100%, 50%, 25%, 10% or 5% of span. Select the step time to match your system from 5, 6, 7, 8, 10, 15, 20, 25, 30 and 60 seconds. Connect directly to the thermocouple inputs of smart transmitters, PLCs, controllers and multichannel recorders and verify their outputs or displays. Measure and trouble shoot thermocouple sensor connections and find broken wires or high resistance junctions. Connect your sensor and the CL541-PLUS automatically measures the thermocouple in degrees C or F.
• Source and Read 4 T/C Types J, K, T AND E Plus mV
• Easy-to-Read Backlight Display
• Easily Change T/C Types and Scale
• Calibrate Quickly With Automatic Output Stepping
Specifications(Unless otherwise indicated all specifications are rated from a nominal 3°C, 70% RH)
Accuracy±(0.008% of Reading + 0.006 mV) Cold Junction
Compensation±0.1°F (±0.06°C)
Millivolt Range-13.000 to 80.000 mV Operating Temperature
Range-25 to 60°C (-10 to 140°F)
Relative Humidity Range10% ?RH ?90% (0 to 35°C), non-condensing; 10% ?RH ?70% (35 to 60°C), non-condensing
Dimensions143 L x 76.2 W x 40.64 mm H (5.63 x 3.00 x 1.60")
Weight12.1 oz (including boot and batteries)
Power4 "AA" Alkaline 1.5V (included)
Battery Life50 Hours
Low BatteryLow battery indication with nominal 1 hour of operation left
Protection Against MisconnectionOver-voltage protection to 60 Vdc (rated for 30 seconds)
DisplayHigh contrast graphic liquid crystal display. LED backlighting for use in low lit areas.
Read
Input Impedance>10 Megohms
Open Themocouple
Threshold10,000? nominal
Pulse<10 microamp pulse for 300 milliseconds
Normal Mode Rejection50/60 Hz, 50 dB
Common Mode Rejection50/60 Hz, 120 dB Source
Output Impedance< 0.3?
Source Current> 20 mA (drives 80 mV into 10?)
Noise?4 microvolts p-p for frequencies of 10 Hz or below
  • Thumbnail of document Manual - CL541-Plus 4 Thermocouple Types and Millivolt Calibrator
    Download

    Manual - CL541-Plus 4 Thermocouple Types and Millivolt Calibrator

    Download

Request a Calibration Quote

We’re here to make calibration easy. Request a quote today and let our team give you the care, precision, and service you can trust.
Learn more

Browse By Brands

Uncover the brands that set the standard for quality and dependability in every industry we serve.
Learn more