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MC140i Voltage and Current Calibrator

MC140i

Multifunction calibrator MC140i is ideal for calibration of voltmeters, ammeters, DMMs and panel meters.

  • AC/DC voltage 1uV to 1000V
  • Current 50uA to 1000A using test coil
  • Deviation control along readout
  • 0.0035% basic dc accuracy
  • 0.03% basic ac accuracy
  • Supplied with RS232 interfaces
  • UKAS/NIST Traceable
About the MC140i calibrator

The basic function of the MC140i calibrator is accurate generation of calibrated DC/AC voltage in the range from 0µV to 1000V and DC/AC current in the range from 0 to 20A . Using a 50-turn coil the current range can be extended from 50µA to 1000A. The best accuracy of the calibrator on DC voltage is 0.0035%, on AC voltage 0.03%, on DC current 0.013% and on AC current 0.055%. Maximum frequency range is from 20Hz to 100kHz for harmonic output waveform. For calibration of thermometers and temperature regulators, the MC140i simulates the temperature sensor. The MC140i Calibrator is able to simulate all TC sensors types R, S, B, J, T, E, K and N. Compensation of the TC cold junction is made by entering a value from the keyboard.

Using the MC140i

MC140i Calibrator is equipped with a number of other functions which make it an attractive and useful instrument. Among them the possibility to set relative deviations from the actual value of the selected output signal, displaying of the output signal uncertainty, internal calibration procedure and more. The calibrator's control and indication uses a large area luminescence display on which all necessary information is made available. The control is performed through simple menus. Moreover, frequently used functions have firmly assigned keys for direct control. As standard calibrator is equipped with RS-232 serial port making it possible to be controlled by personal computer. The MC140i calibrator can be included into Powertek's WinQbase software calibration system.

MC140i Specifications DC/AC voltage
range % of value + % of range % of value + % of range % of value + % of range % of value + % of range
DC 20Hz - 10kHz 10kHz - 50kHz 50kHz - 100kHz
0 mV - 20mV ** 0.05 + 0.0 + 10µV 0.20 + 0.05 + 20µV 0.20 + 0.10 + 20µV 0.20 + 0.10 + 20µV
20mV - 200mV 0.01 + 0.0 + 10µV 0.1 + 0.03 + 20µV 0.15 + 0.05 + 20µV 0.15 + 0.05 + 20µV
200mV - 2V 0.003 + 0.0008 0.025 + 0.005 0.05 + 0.01 0.05 + 0.01
2V - 20V 0.003 + 0.0005 0.025 + 0.005 0.05 + 0.03 0.05 + 0.03
20V - 240V 0.003 + 0.0005 0.025 + 0.010 -- --
240V - 1000V 0.005 + 0.005 0.03 + 0.02 * -- --
*valid for f < 1000Hz **DC voltage from 0µV, AC voltage from 1mV
MC140i Specifications AC/DC current
range % of value + % of range % of value + % of range % of value + % of range % of value + % of range
DC 20Hz - 1kHz 1kHz - 5kHz 5kHz - 10kHz
1µA - 200µA 0.05 + 0.0 + 20nA 0.15 + 0.0 + 20nA 0.30 + 0.10 +20 nA --
200µA - 2mA 0.02 + 0.005 0.07 + 0.01 0.20 + 0.05 0.20 + 0.05
2mA - 20mA 0.01 + 0.003 0.05 + 0.005 0.20 + 0.05 0.20 + 0.05
20mA - 200mA 0.01 + 0.003 0.05 + 0.005 0.20 + 0.05 0.20 + 0.05
200mA - 2A 0.015 + 0.005 0.05 + 0.005 -- --
2A - 20A 0.02 + 0.010 0.10 + 0.03 -- --
When option 140-50 Current coil is used, add uncertainty 0.3 % of the set current to the value specified in the above table. Output current is multiplied by factor 25 or 50.
Thermocouple sensor simulation
types R, S, B, J, T, E, K, N
range of temperature -250°C - 1820°C
temperature unc. 0.4°C - 4.0°C
temperature scale ITS 90, IPTS 68

Accessories Included

Power line cable
1 pc
Operation manual
1 pc
Option 10/11: Test cable for 1000V - 20 A, black/red
2 pcs

Options

Option 140-50

Current coil with 25 and 50 turns.

Suitable for clamp ammeters and split core CTs, testing up to 1000 A. Maximum recommended output current into the coil is 20 Arms.

Option 100
Option 10

Test cable 20A/1000V (black)

Option 11

Test cable 20A/1000V (red)

Option 100

Cable adaptor for distance change between front panel terminals to 3/4 inch

Option 140-41
Cable RS-232

RS-232, 2m

WinQbase

Application SW for making database of meters and for automatic meter calibration.

CALIBER

SW module for automatic calibration of multimeters.