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6. Menu functions
32
6.5 Device
46
31
t S l D o R e q .
m i n . s e c .
05:00
The steps for performing the tightness test "Test with
air", based on the standard DIN EN1610 "Construc-
tion and testing of drains and sewers", are outlined in
the instrument menu:
- Enter the set slowdown time (tSlDoReq)
- Enter the set test time (tTestReq)
- Enter the set test pressure at which the measure-
ment is to take place (P Req.)
- Enter the permitted pressure drop p in hPa
that is critical in order to assess whether the pipeline
is leaking or not (P Req.)
The test can start once the required values according
to the standard have been entered. It is divided into
5 areas:
Time zone areas:
- Pre-fill time
Build-up of the pressure in the pipe system and the
actual duration.
- Slowdown time
Measurement of the pressure, which should
exceed the test pressure required by the standard
by about
10 % over 5 min. and which records the actual duration.
- Test time
Record of the actual test duration.
- Drop time
Record of the duration of the pressure drop in the
line.
When the test has come to an end the individual
required and actual test data can be printed out on
the printer or automatically imported into a test log via
the ComSoft software.
Slowdown time (tSlDoReq)
Set the required time. According to DIN EN1610, it
should be about 5 min.:
A starting pressure that exceeds the necessary test
pressure p
by about 10 %. p
o
tained for 5 min.
4 Select tSlDoReq (0 sec. to 99 min., 59 sec.) with
or
(hold the key down to move for-
ward / back quickly. Confirm the selection with
. You automatically return to the tTestReq
menu.
must first be main-
o
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