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MC631 Precision RTD Simulator

  • Real resistors switched by relays
  • Resistance range 16 Ω - 400 kΩ
  • Simulation accuracy 0.01°C
  • Resistance accuracy 0.003%
  • Maximal voltage 200 Vpk
  • Resolution from 0.001°C
  • Range of Pt sensor temperature simulation -200°C - +850°C
  • Connection 2, 3, 4-wire
  • Remote control RS232, optionally USB, IEEE488, Ethernet

Model MC631 is a high accuracy RTD simulator with range from 16Ω to 400kΩ. Basic accuracy is 0.01°C, resolution is 0.001°C. Decade consists of highly stable foil resistors switched with combination of relays. Apart from RTD temperature sensor simulation (temperature setting in Celsius or Fahrenheit) the MC631 can also be used as a standard resistance decade. Instrument can be controlled via RS232, USB, LAN or GPIB interfaces. Decade uses internal power supply with very low noise level. Simulator can also be used for AC application. Please see datasheet for information on frequency response.

RTD simulators are designed for calibration laboratories for temperature testing of RTD evaluation units like temperature regulators, transducers, etc. With the resistance simulation function, MC631 can also be used as an ohmmeter calibrator or as a device for quality testing in the industry as well. This simulator can be ordered as 19” module for easy assembling into a 19” rack. Module height is 3HE.

General Specifications

Maximal Voltage: 220V pk
Maximal Current: 500mA
Total power dissipation: 0.25W
TC of used resistors: <1ppm/°C  (16Ω....2kΩ)
<5ppm/°C (2kΩ....10kΩ)
<50ppm/°C (10kΩ....400kΩ)
Reaction time: 6ms
Switching method: Fast/Smooth/Via short/Via open
Terminals: Gold plated terminals 4mm
Remote control: RS232 interface (optional USB, LAN, IEEE488)
Power supply: 115/230Vac, 50/60 HZ
Reference temperatures: +20°C...+26°C
Working temperatures: +5°C...+40°C
Storage temperatures: -10°C...+50°C
Dimensions W  x H x D: 15.3in x 5in x 12.2in
(390mm x 128mm x 310mm)
Weight: 5.2kg

Resistance Accuracy

Range/Resolution Accuracy
16Ω - 20Ω 0.002% + 2mΩ
20.001Ω - 200Ω
200.01Ω - 1,000Ω 0.003%
1,000.1Ω - 3,000Ω 0.005%
3,001Ω - 10,000Ω 0.015%
10.01kΩ - 30kΩ 0.03%
30.1kΩ - 100kΩ 0.1%
101kΩ - 400kΩ 0.4%

Frequency Response

R AC/DC difference
100Hz 1kHz 10kHz
16Ω 0.01% 0.01% 0.04%
100Ω 0.1% 0.03% 0.30%
1kΩ 0.03% 0.30% 3.00%
10kΩ 0.30% 3.00%  
100kΩ 3.00%    

Pt simulation accuracy

Temperature Accuracy
Pt100 - Pt500
Pt501 - Pt6000
-200 - 0.0°C 0.01°C 0.01°C
0.001 - 200°C 0.015°C 0.02°C
200.001 - 500°C 0.03°C 0.04°C
500.001 - 850°C 0.04°C 0.1°C

Ni simulation accuracy

Temperature Accuracy
Ni100 - Ni500
Ni501 - Ni6000
-60 - 0.0°C 0.01°C 0.01°C
0.001 - 300°C 0.01°C 0.02°C

Accessories (included)

Application Software 1pc
RS232 Cable 1pc

Options (extra ordered)

Table Version
19" rack