AEMC 1060 User Manual page 16

Depending on the choices (DAR or PI), the measurement goes as follows:
a) DAR: Press START - the DAR symbol flashes and the display indicates "- - - -"
as long as the calculation of the coefficient is not possible (t < 1 mn).
After 1 min, the measurement stops and the main display automatically shows the
DAR value. During or after measurement, the R-DAR-PI button can be used to see
the insulation measurement carried out, but it does not give the PI value since the
measurement has not lasted long enough.
b) PI: Press START - the PI symbol flashes and the display indicates "- - - -"
as long as the calculation of the coefficient is not possible (t < 10 mn).
After 10 minutes, the measurement stops and the main display automatically
shows the PI value. During and after measurement, the R-DAR-PI button makes
it possible to display the DAR (after 1 min), the PI (after 10 min) and the insulation
measurement.
Note: If during DAR or PI measurement (automatic or not), a high external inter-
ference voltage becomes present, or the insulation resistance goes beyond the
device's measurement range, then the DAR or PI measurements are interrupted
and the screen indicates:
DAR
Note: The 10 min / 1 min measurement durations for PI calculation can be modi-
fied in the SET-UP menu (see § 2.5.7), allowing changes to standards or to suit a
particular application.
Second Function - R(t)
Used to access the interval insulation resistance values as a function of time after
a measurement in "time-controlled test" mode (see § 2.5.2).
The time between each saved sample is programmed in the SET-UP menu.
This function is also available on the Model 1050, which has neither a read-write
memory for saving measured data, nor an interface for data retrieval from the
instrument by a PC.
Model 1050:
Up to 20 samples can be recorded during measurement at the sample rate chosen
in SET-UP (the default value is 30 seconds). It is possible to save more than 20
samples depending on available memory.
14
e.g.:
e.g.:
or
M PI M
Megohmmeter Models 1050 /1060