With the CL542-PLUS you can check and calibrate all your thermocouple instruments and measure thermocouple sensors.
Calibrate Directly in Temperature (°C and °F)
Stop carrying around a millivolt source and thermocouple tables. The CL542-PLUS works with the thermocouples you use including Types J, T, E, K, R, S, B, N, G, C, D, L (J-DIN), U (T-DIN) and Platinel II. Easily set any value quickly to within 0.1° with the adjustable digital potentiometer “DIAL” plus store any three temperatures for instant recall with the check switch.
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.
Compatible with All Process Instruments
Connect directly to the thermocouple inputs of smart transmitters, PLCs, DCS and multichannel recorders and verify their outputs or displays. Carry it without worry—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.
(Unless otherwise indicated all specifications are rated from a nominal 23°C, 70% RH for 1 year from calibration)
Accuracy: ± (0.008% of Reading + 0.006 mV)
Cold Junction Compensation: ± 0.16°F (±0.1°C)
Millivolt Range: -13.000 to 80.000 mV
Operating Temperature Range: -25 to 60°C (-10 to 140°F)
Relative Humidity Range: 10% ?RH ?90% (0 to 35°C), non-condensing; 10% ?RH ?70% (35 to 60°C), non-condensing
Dimensions: 143 L x 76.2 W x 40.64 mm H (5.63 x 3.00 x 1.60")
Weight: 12.1 ounces (including boot and batteries)
Power: 4 "AA" Alkaline 1.5V (LR6) (included)
Battery Life: 50 Hours, low battery low battery indication with nominal 1 hour of life left. Protection against misconnection over-voltage protection to 60 Vdc (rated for 30 seconds)
Display: High contrast graphic LCD. LED backlighting for use in low lit areas.
Input Impedance: > 10 Megohms
Open Thermocouple Threshold: 10,000 ? nominal
Pulse: <10 microamp pulse for 300 milliseconds
Normal Mode Rejection: 50/60 Hz, 50 dB
Common Mode Rejection: 50/60 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