Diehl Metering AQUILA DN15 Руководство пользователя - Страница 5
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Печатать страницу1.4.4 P
RESSURE RESISTANCE
Static pressure
AQUILA is designed to operate at a maximum nominal pressure of 16 bars. Its test pressure is 32
bars (as per EN 14154/ISO 4064/OIML R49).
Water hammer effect
AQUILA can withstand 100,000 rapid rises in pressure from 0 to 30 bars in 0.2 second.
Any work or disruption in the supply system must not lead to water hammer effects. While working
on the pipes, carefully bleed the pipes in order to prevent the formation of air bubbles, which could
damage the meter when the water is turned back on.
1.4.5 A
CCIDENTAL FLOWRATE
Thanks to its design, AQUILA can withstand one hour at a flowrate triple as high as the maximum
flowrate (Q4).
1.4.6 S
AND SIDE
The meter doesn't undergo significant degradation of its metrological curve after functioning on a
test bench with the following protocol:
•
Duration: 21 days
•
Sand rate: 0.1 g/litre
•
Flowrate: 45 % of the time at Q3, 45 % of the time at Q3/10, 10 % of the time stopped
1.4.7 N
-
ON
RETURN VALVE
AQUILA may be equipped with a non-return valve.
1.4.8 R
EGISTER
1.4.9 R
EADABILITY
The register withstands prolonged immersion of over 6 months, at a water depth of 1 meter.
1.4.10 I
NVIOLABILITY
If fraud is attempted by opening the sealed part of a meter, the locking ring will retain a visible trace
of the fraud attempt.
The meter retains a visible trace of fraud attempt on the clamp, by deformation of the plastic
register and the fall of the "G-clamp tamper orange pin".
04/2016
-
EFFECT
fig.4
All AQUILA meters are fitted as standard with
a plastic register.
The register is compatible with all modular devices
from the "Ti" modularity.
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