Liquid Dosing Control Manual
9.17.150 rev A – September 2020
Page
20
of
34
5. Optional step for actuator – Pump with bypass circuit
-
Ensure the bleed connection or bypass are connected to a suitable container or waste
line
-
Ensure that liquid downstream of the dosing set is properly collected
Start bleeding the bypass circuit
- Write value <___> to parameter 206 – Flow setpoint
(provide setpoint to fill bypass)
Choose roughly 25% of the normal operation flow of the system as setpoint at this step.
- Slowly open the bypass valve to allow flow to pass through
- Wait 10 seconds
- Write value 0 to parameter 206 – Flow setpoint
(setpoint 0)
Wrap-up
-
Close the bypass valve (default state)
The system is now ready to perform the bypass adjustment
See
Installation Manual – Liquid Dosing Sets (9.17.146) for instructions
6. Completion of Flush step
- Check for leakages with complete system being filled
- Close (if applicable) process valves outside the Bronkhorst set to avoid unexpected liquid
flows
Re-Enable Batch Mode if required for operation
- Write value 2 to parameter 130 – Counter Mode
(Counter mode up to limit)
Step DDE ProPar Name
Data
Type Execute Value
Remark
1
206
33/3
fSetpoint
Float
write
<value>
Flow Setpoint
1
12
1/4
Control Mode
Uint8
write 8
Actuator 100%
2
270
116/15 Actual Density
Float read
Check for change, which
indicates fluid in instrument.
3
205
33/0
fMeasure
Float read
<measure> Flow Rate in Capacity Unit.
4
12
1/4
Control Mode
Uint8
write 8
Actuator 100%
5
12
1/4
Control Mode
Uint8
write 3
Actuator 0%
6
270
116/15 Actual Density
Float read
Check for change, which
indicates fluid in instrument.
7
206
33/3
fSetpoint
Float write
<value>
Flow Setpoint for bypass circuit
8
130
104/8
Counter Mode
Uint8 write
2
Counter Mode up to limit (batch
Mode)
