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
Connect directly to the
thermocouple inputs of
PLCs, DCS and
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.
SPECIFICATIONS (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 Ω 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 Ω Source Current: > 20 mA (drives 80 mV into 10 Ω) Noise: ≤4 microvolts p-p for frequencies of 10 Hz or below
† All amounts shown in USD Note: Comes complete with rubber boot, 1 red and 1 black leads with retractable shield banana plugs and aligator clips4 “AA” alkaline batteries, NIST certificate of calibration, carrying case, and operator’s manual. Ordering Example: (1) CL542-PLUS Universal T/C calibrator, USD2,240.51
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