Ametek mAcal

10 103887 01
4. ERROR SITUATIONS
4.1 TEST FOR “OPEN LOOP”
The text flashes in the display:
CAUSE
The unit is unable to generate the desired current.
The current loop is probably open or selection of PWR is
incorrect.
REMEDY
 Check whether instrument is connected correctly.
 Check that PWR selection is correct.
4.2 TEST FOR INCORRECT POLARITY
The text flashes in the display:
CAUSE
The unit measures a negative current.
REMEDY
The test leads + and - are probably to be changed over.
4.3 TEST FOR “OVERRANGE”
The text flashes in the display:
CAUSE
The unit measures a current which is greater than 24mA or a
voltage which is greater than +45Volts or less than -45Volts.
REMEDY
 Measure only voltages in the range -45 to +45 Volts.
 Measure only in current loops, where the current is less
than 24mA.
 Check that the instrument is connected properly.
See Fig. 3 to Fig. 7 on the cover of the user’s guide.