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Setting coefficients:
1. Select gas type → [Coeff.].
2. Select the coefficients: [Edit].
Possibly:
> Enter password:
[OK].
3. Set values → [OK].
4. Save changes: [Finished].
6.2.
Measuring
6.2.1.
Preparing for measurement
Caution
Avoid damage to the instrument due to high pressure!
> For tests with a test pressure of > 1 bar or using a liquid test
medium e.g. water, a high pressure probe (art. no. 0638 1748)
must be used.
[Enter]
The feeding unit (gas bladder) must be tested for leaks at
regular intervals, see Instrument diagnosis, page 30, gas
feeding unit test.
The First steps chapter (see First steps, page 22) must
have been read.
General information on the tightness tests on gas and
water pipes according to DVGW
•
Before starting work on pipes carrying gas, the relevant
shut-off device must be closed and secured against
opening by unauthorised persons (e.g. when the key or
the hand wheel is removed). Where gas escapes or
could escape, it is necessary to ensure that the gas is
disposed of safely through ventilation or routing it
outdoors via a hose. The shut-off device should only be
opened again when all openings of the pipes through
which gas could escape have been tightly sealed. The
above does not apply when dealing with external
maintenance measures on pipes.
•
If a leak is detected in accessible pipes carrying gas
using a gas detector in accordance with DVGW advice
G465-4 or with foaming agents in accordance with DIN
EN 14291, the point must be sealed by means of
suitable measures. Illumination with flames is not
→ Enter password →
6 Using the product
[Finished]
→
37
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