6 Using the product
43
6.2.4.2. Main test
The main test (using air or inert gas such as CO2 or N2) is a
tightness test for pipes including fittings, but without gas appliances
and the relevant regulating and safety devices. The main test is
carried out after a successfully completed pretest on newly laid gas
pipes or after renovation of existing gas pipes and is used for the
acceptance of these pipes. It shows up even the smallest leaks in
gas pipes.
Calling up the function:
> [] → Measurements → [OK] → Gas pipe (TRGI 2008 →
Main test → [OK].
Setting parameters
According to DVGW TRGI 2008, the stability time and
measurement period depend on the pipe volume.
• Pipe volume < 100 l: Adjustment time 10 min,
measurement period 10 min.
• Pipe volume > 100 l - < 200 l: Adjustment time 30 min,
measurement period 20 min.
• Pipe volume > 200 l: Adjustment time 60 min,
measurement period 30 min.
Parameter Explanation
Volume Set volume
The pipe volume can also be
measured directly, see [Options]
→ Volume
Stability time Set stability time
Measurement period Set measurement period
Test pressure (target) Set test pressure
According to DVGW TRGI 2008,
the test pressure (target) is
150 mbar.
1. Edit values: [Edit].
2. Enter values. [▲], [▼] and sometimes [◄], [►] → [OK].
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