Honeywell Krom Schroder BCU 580 - Page 35

BCU 580 · Edition 11.15l 35
Valve proving system
Calculation examples
2 valves VAS 665,
distance L = 9.5 m,
inlet pressure p
u
= 50 mbar,
max. flow rate Q
(N)max.
= 200 m
3
/h.
BCU 570..C1
µC
131415
4758 48
TC
PZL PDZ
M
>750°
ϑ
1
2
3
V
p1
VAS 665 VAS 665
p
u
= 50 mbar
Q
(N) max.
=
200 m
3
/h
DN65
9.5 m
Leakage rate
QL
=
200 m
3
/h x 1000 l/h
= 200 l/h
1000 x 1 m
3
/h
Test volume V
p1
= 1.1 l + 9.5 m x 3.3 l/m = 32.45 l
see page 34 (Test volume V
p1
)
Measurement time for one test volume V
p1
Parameter 70 = 0
t
M
[s ] =
2 x 50 mbar x 32.45 l
= 16.23 s
200 l/h
Set the next highest value (20 s) using parameter 56,
see page 96 (Measurement time V
p1
).