BARTEC BENKE HYGROPHIL H 4230-12 Ex Zone II, Operating Instructions Manual, Page: 63 / 112

Programming
57
Operating Instructions HYGROPHIL® H 4230-12 BA 060207
5.2.4.6 Flow setting
For controlling the flow you can set a nominal value for differential pressure
DP.
ENTER 
Don’t make any changes
1 
Set a nominal value for DP
0

No nominal value for DP, switch to next menu.
Enter the nominal value for DP using keyboard, (100...999)
ENTER
After entering the nominal value enter the tolerance for the proportional
valve. Thus you define the limits for FLOW TOO LOW and FLOW TO HIGH.
The range for expedient values is

50...

200.
The diagram below shows the flow depending from differential pressure.
700
+50
500 600 700 800 900
600
+50
500
+50
400
+50
300
+50
DP [hPa]
Flow [NL/h]
15 8 9 10 11 12 13 14
Flow [NL/min]
900 NL/h
15 NL/min
740 NL/h
12,3 NL/min
580 NL/h
9,6 NL/min
EQUIPM.-CONFIG
SET FLOW ? 1/0
EQUIPM.-CONFIG
DP = 700
EQUIPM.-CONFIG
DP RANGE + - 50