BRONKHORST FLEXI-FLOW Compact Instruction Manual page 21

3.2.5 Switching control function
· Bronkhorst FlowSuite automatically adds additional communication channels to the array as regular instruments.
Although each communication channel represents an individual instrument, all three communication channels of
·
the FLEXI-FLOW have the same node address in the fieldbus network.
Control functions
The multi-parameter functionality
pressure, using 3 different communication channels. The selected control function determines whether the instrument uses 1 or
2 communication channels/sensors for measurement and control.
Single channel control
Using the single channel control functionality, only a single sensor is used:
Control Communication
Function channel
0 F
1 P1
2 P2
Dual channel control
Using the dual channel control functionality, a combination of the flow sensor and 1 of the pressure sensors is used, where either
the flow is controlled and the pressure is limited, or vice-versa:
Control Communication
Function channel
3 F + P1
4 F + P2
5 P1 + F
6 P2 + F
9.17.158G
Bronkhorst®
enables simultaneous measurement of flow, upstream pressure and downstream
10
Instrument function
Flow control
Upstream pressure control
Downstream pressure
control
Instrument function
Flow control, with upstream
pressure limit
Flow control, with
downstream pressure limit
Upstream pressure control,
with flow limit
Downstream pressure
control, with flow limit
Instruction Manual FLEXI-FLOW™ Compact 21