Conducting Pipeline Tests; Tightness And Stress Tests - Dräger P7-TDX Instruction Manual

Instruction Manual Dräger P7-TDX

13. Conducting pipeline tests

13.1 Tightness and stress tests

During pipeline tests, an informational text provides information pertaining to the current
measurement process.
After pumping up to the respective test pressure (not for external pumps), the device
checks the pressure for 1 minute. If the pressure drops below the required test pressure,
the measuring device automatically starts pumping again. This can be repeated up to 2
times. The last minute of this period of checking belongs to the stabilization phase.
Every tightness or stress test includes a stabilization phase for temperature equalization
and subsequent measurement. The duration of the stabilization phase, measurement and
test pressure depends on the regulations (TRGI, TRF, TRWI, etc.).
The current pressure in the pipeline to be tested and the al-
ready elapsed stabilization period are shown during the stabi-
lization phase.
If stabilization was reached or prematurely terminated, the
measurement starts.
The pressure at the beginning of the measurement (P-Start),
the current pressure or the pressure at the end of the meas-
urement (P), the pressure difference (P-diff) and the already
elapsed measurement period (t) are shown during and at the
end of the measurement.
A diagram shows the pressure curve.
The measurement can be terminated prematurely using
( ).
CONTINUE
The start and stop values as well as the up to 20 intermediate measurements and the
elapsed time were retained. These retained values can be stored and transferred to a PC
at a later point in time. Measurement reports, which show the chronological sequence of
the measurement in a diagram, can be printed using the PC200P software.
The documentation menu is opened using ( ).
CONTINUE
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