Page 12
HDW measurements
Once the “HDW” measurement procedure
has been selected, the corresponding mea-
surement screen will appear.
Press the “Start” soft key to start the mea-
surement.
The
PipeCheck
plus
will now continuously
measure first the loop and then the insula-
tion resistance. The current measurement is
indicated by the “>” sign.
The respective last measured values are
shown on the display. See page 22 for
information on how to interpret the values.
During measurements the element voltage
Ux can be displayed by pressing and hold-
ing the “Ux” soft key.
The presence of an element voltage can be
an indication of moisture in the insulation
layer.
Press the “Stop” soft key to end the
measurement and freeze the display.
Shown are:
• the
loop resistance
•
the insulation resistance
for
measuring wire a against b
,
•
the insulation resistance
for
measuring wire a against the pipe
,
•
the insulation resistance
for
measuring wire b against the pipe
.
Once the measurement has been completed, measurement values can be
stored in the SD card’s “HDW.CSV” CSV file by pressing the “Save” soft key.
--> See chapter “How to save measurement values” on page 13.
Error message “Measuring wire mix up”
Where wires a and b are mixed up due to
incorrect installation or incorrectly connect-
ed measurement lines, this will lead to
incorrect measurements.
The
PipeCheck
plus
will detect this kind of
error and show it on the display as “Loop
interrupted” and “a<>b”.
