ecom-B
Page 31
Usage property
The
“Usage property“
acc. to DVGW – TRGI Process form G 624
at conduits is memorised as a measurement routine by the ecom-B.
The calculation of the leak rate happens automatically according to
the following equation and corresponds herewith to the procedure of
the DVGW-TRGI Process Form G 624:
VB = V/TM * ((PA + P1)/(PA + P2)-1) * PB/P1 * f
with:
VB
=
Gas leak volume in operation state (l/h)
V
=
Pipe content in litres
TM
=
Measurement duration in hours
PA
=
Barometer stand in hPa
P1
=
Test pressure at meas. beginning in hPa
P2
=
Test pressure at measurement end in hPa
PB
=
Maximal gas operation pressure in hPa
f
=
Factor for consideration of gas type
Proceed as follows:
1. Close the conduit with a suitable adapter (test stopple, high-
pressure stopple or one-pipe counter cap).
2. Connect the components as described before.
3. Scroll with cursor keys
<Up/Down>
to the menu
„Usage proper-
ty“
. Activate with
<Enter>
.
4. Adjust the air pressure
(PA)
with cursor keys
<Up/Down>
and
confirm with
<Enter>
.
5. Choose the gas type
(f)
with cursor keys
<Up/Down>
and confirm
with
<Enter>
. The following gas types are recorded with their re-
spective factors:
Natural Gas, Air, Town Gas, Propane, Butane, Hydrogen
6. Adjust the maximal operation pressure
(PB)
with cursor keys
<Up/Down>
and confirm with
<Enter>
.
Summary of Contents for B
Page 1: ...Operating Instructions ...
