Main Test - TESTO 324 Instruction Manual

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:
> [
Main test
Setting parameters
Parameter
Volume
Stability time
Measurement period
Test pressure (target) Set test pressure
1. Edit values: [Edit].
2. Enter values. [▲],
] → Measurements
→ [OK].
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.
Explanation
Set volume
Set stability time
Set measurement period
[▼]
→ [OK] → Gas pipe (TRGI 2008
The pipe volume can also be
measured directly, see
→ Volume
According to DVGW TRGI 2008,
the test pressure (target) is
150 mbar.
and sometimes [◄],
6 Using the product
→
[Options]
[►] → [OK].
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