6 Using the product
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6.2.4.4. Combined pretest/main test
The combined pretest/main test is carried out on newly laid pipe
systems with operating pressures of 100 mbar to 1 bar.
The test includes pipe systems including fittings, but without gas
pressure controllers, gas appliances, gas meters and relevant
regulating and safety devices.
A high pressure probe is required for this test.
Calling up the function:
> [] → Measurement → [OK] → Gas pipe (TRGI 2008 →
Combined Pre-/ Maintest → [OK].
Setting parameters
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
1. Edit values: [Edit].
2. Enter values. [▲], [▼] and sometimes [◄], [►] → [OK].
Carrying out a combined pretest/main test
1. Start measurement: [].
- Zeroing starts (5 s)
- Build up test pressure (target) manually with the test pump or a
compressor at the connection provided.
Option
> End stability time early: [Next]
> End measurement period early: [Next]
- Measurement is cancelled.
- Combined pretest/main test is ended.
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