M-142 Multifunction Calibrator
MEATEST, s.r.o.
106
User Manual v54
Connection of a multimeter to be calibrated (current range) to calibrator’s output terminals
Optional current coil can extend the calibrator’s current range to 1000 A. The coil can be used for calibration of
both DC and AC ammeters. The clamps of the ammeter must be positioned in angle 90
o
to the coil. When using
the current coil, no steel or other magnetic objects must be present in the vicinity (50 cm) of the current coil, as
they would deform the magnetic field and cause big calibration error.
Connection of current coil:
Powermeters
The calibrator can be used for calibration of DC and AC digital and analogue powermeters and energy meters.
The following limitations apply:
voltage
0.2 V to 240 V
current
2 mA to 20 A
frequency
DC, 40 Hz to 400 Hz
time
1.1 s to 1999 s
phase shift
-180 to +180°
The display can show active, reactive and apparent power and energy values. The phase shift between the output
voltage and current can be set and displayed as well, either as the power factor (PF, cos
) or as the phase shift in
degrees.
In the P-E mode, the permitted load of the voltage and current outputs is the same as in the voltage and current
modes. If the output is overloaded, the calibrator disconnects the output terminals and displays an error message.
For calibration of tong powermeters, current coil can be used. Power factor meters can be calibrated as well.
Current coil
140-50
