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Calibrator for Thermocouple and RTDs (PT100)
TRODEKS Engineering | Thermocouples, Pressure Transducers, Flow Meters, PID Controllers
  • Calibrate Thermocouple Instruments to 0.1 and 0.01, °F and °C
    Types J, K, T, E, R, S, B, N, G, C, D, L (J-DIN), (T-DIN) and P (Platinel): -13.000 to 80.000 mV
  • Calibrate RTD Instruments to 0.1 and 0.01, °F and °C
    Pt 10, 50, 100, 200, 500 and 1000O (3850)
    Pt 100O (alpha = 3902, 3916, 3926)
    Cu 10 and 50O and Ni 120O
  • Calibrate with Confidence
    Resolution to 0.01, °F and °C; Accurate to 0.2°
    Cold Junction Sensor Accurate to 0.05°C
    NIST Traceable Cold Junction Sensor in Isothermal Block
  • Troubleshoot RTD Sensors and Instruments
    Automatic Detection of 2-, 3- or 4-Wire Connections Indicates When Individual Wire Connections are Open
    Verify Proper Instrument Operation by Measuring the Excitation Current
  • Fast Easy Calibrations
    Instantly Select 3 Outputs with the EZ-CHECK Switch
    Easily Find Trip Points with 2 Speed EZ-DIAL Knob and Automatic Stepping
  • Verify Resistance, Cold Junction Temperature and Output
    Secondary Display of Resistance for RTDs and Compensated millivolt Setting, and Cold Junction Temperature for Thermocouple
  • Use in the Plant, Field or Shop
    Includes Rubber Boot and mV Test Leads
    Low Profile Switches Resist Accidental Damage
    Brass Screws for Thermocouple Wires Plus Miniature Thermocouple Socket
  • Perform Heat Treating Surveys and Accuracy Tests
    Meets or Exceeds the Requirement of AMS 2750 as Both a Secondary Standard Instrument and as a Field Test Instrument
  • NIST Cert (No Points)
 Manuals (contact with email : [email protected])


Simulating or readingthermocouples requiresthe use of thermocoupleor extension gradethermocouple wire.Plug thermocouple wires intothe miniature thermocouplejack or place barethermocouple wiresonto the brass block underthe screws.

The CL543B has two bananajacks (1+ and 2-) mounted inthe top end of the housing.These are not temperaturecompensated and are to beused only for millivolt signals.

Simulating or reading RTDsuses copper wire. Plug 2-, 3- or4-wires into the correspondingjacks on the calibrator. For RTDsource the CL543B simulates the(+) RTD from jacks 1 and 4 andthe (-) RTD from jacks 2 and 3.When reading an RTD sensorthe CL543B uses patentedcircuitry to automatically detectsif 2-, 3- or 4-wires are connected.This is helpful to troubleshootsensor connections.

Operating Temperature Range:-20 to 60°C (-5 to 140°F)
Storage Temperature Range:-30 to 60°C (-22 to 140°F)
Temperature Effect: ≤±25 ppm/°C ofrange
Cold Junction Sensor: ≤±0.01% °/°from ambient temperature (°C or °F)
Relative Humidity Range:
    10% ≤RH ≤90% (0 to 35°C), non-condensing
    10% ≤RH ≤70% (35 to 60°C), non-condensing
Normal Mode Rejection: 50/60 Hz, 50 dB
Common Mode Rejection: 50/60 Hz, 120 dB
Dimensions: 143 L x 76 W x 41 mmH (5.63 x 3 x 1.60")
Weight: 0.34 kg (12.1 oz) with bootand batteries
Batteries: Four “AA” alkaline 1.5V(LR6) (included), optional NiMhrechargeable battery kit [120 Vac(North America only); charger,4 NiMh batteries, AC and DC cords
Battery Life: 50 hours, low batteryindication with nominal 1 hour ofoperation left
Over-Voltage Protection: Up to60 vrms (rated for 30 seconds),protection against misconnection
Alerts: Red LED displaysOVERLOAD or out of range conditions
Display: High contrast graphic liquidcrystal display, LED backlighting foruse in low lit areas
Voltage Source
Ranges and Resolution:-13.000 to 80.000 mV and -13.0000to 80.0000 mV
Accuracy: ±(0.008% of setting +0.006 mV)
Source Current: ≥10 mA
Output Impedance: <0.3Ω
RMS Noise: ≤±0.0005 mV from0.1 to 10 Hz
Short Circuit Duration: InfiniteVoltage Read
Ranges and Resolution:-13.000 to 80.000 mV and -13.0000to 80.0000 mV
Accuracy: ±(0.008% of reading +0.006 mV)
Input resistance: ≥10 MΩThermocouple Source
Accuracy: ±(0.008% of setting +0.006 mV)
Cold Junction Compensation:±0.05°C (±0.09°F); thermistortraceable to NIST for 11 years
Output Impedance: <0.3Ω
Source Current: >10 mA (drives80 mV into 10Ω)
RMS Noise: ≤±0.0005 mV from0.1 to 10 Hz
Thermocouple Read
Accuracy: ±(0.008% of reading +0.006 mV)
Cold Junction Compensation:±0.09°F (±0.05°C); thermistortraceable to NIST for 11 years
Input Impedance: >10 MΩ
Open Thermocouple Threshold:10,000Ω nominal
Pulse: <10 microamp pulse for300 milliseconds
RTD and O Source
3- and 4-Wire Accuracy:
    From 1 to 10.2 mA ExternalExcitation Current: ±(0.015% of setting + 0.05Ω)
    Below 1 mA of External Excitation Current:Add (0.025 mV/mA excitationcurrent)
2-Wire Accuracy: Add 0.1Ω to 3-wireand 4-wire accuracy
Resistance Ranges:
    400Ω Range: 0.00 to 401.00 and0.000 to 401.000
    4000Ω Range: 0.0 to 4010.0 and0.00 to 4010.00
RMS Noise:
    400Ω Range: ≤±0.005Ω from0.1 to 10 Hz
    4000Ω Range: ≤±0.05Ω from0.1 to 10 Hz
Allowable Excitation Current Range:
    400Ω Range: 10.2 mA max; steadyor pulsed/intermittent
    4000Ω Range: 1 mA max; steadyor pulsed/intermittent
Pulsed Excitation CurrentCompatibility: DC to 0.01 secondpulse width, 0.025 mV, mA excitationcurrent
RTD and Ohms Read
Resistance Ranges:
    400Ω Range: 0.00 to 401.00 and0.000 to 401.000
    4000Ω Range: 0.0 to 4010.0 and0.00 to 4010.00
Accuracy: ±(0.015% of reading +0.05Ω)
Excitation Current: 0.9 mA to 401Ω,0.4 mA to 4010Ω (nominal)
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