Honeywell BCU 465 - Page 47

BCU 460, BCU 465 · Edition 11.19 47
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
606162
47 48
TC
PZL PDZ
>750°
ϑ
1
3
2
V
p1
VAS 665 VAS 665
p
u
= 50 mbar
Q
(N) max.
=
200 m
3
/h
DN65
9.5 m
Leakage rate
Q
L
=
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46 (Test volume Vp1)
Measurement time for one test volume V
p1
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101
(Measurement time for Vp1).