Instruction Manual Dräger MSI EM2 EM200plus-i
23
10.3.1 Evaluation of gas pipe volume
Is the volume of the gas pipe known, change to “Frac volume”
with
(CONTINUE)
. Put in the first fraction of volume. Adopt it
with
(STORE)
and put in the next fraction.
Is the volume of the gas pipe unknown, the volume can be
calculated with the diameter and the length of the gas pipe.
Selectable diameters are: ´VOL´, 35 mm, 28 mm, 22 mm,
15 mm, 2”, 1½”, 1¼”, 1”, ¾” and ½”. With
(CONTINUE)
may be
changed to “Length” and the length of the gas pipe fraction
with the marked diameter may be putted in.
With
(STORE)
the fraction will be adopted. With
(READY)
the
calculated gas pipe volume will be adopted and all fractions
may be printed.
With
(CONTINUE)
may be changed to the start of the leak
measurement.
10.3.2 Start of leak measurement
Selectable operational pressures are 23 mbar, 50 mbar and
100 mbar. The test pressures are 50 mbar, 55 mbar and
110 mbar (DVGW TRGI 2008).
Connect the instrument with the gas pipe and
(CONTINUE)
.
Close the gas supply (e.g. main valve behind the gas meter).
Connect hand pump and valve with the gas pipe and increase
the pressure to a little bit more than the test pressure.
