Bronkhorst LIQUI-FLOW L30 - Manual (Page 15)

BRONKHORST HIGH-TECH B.V.
9.17.044 page 15
3.7 Analog operation
Digital instruments can be operated with analog signals through the 8-pin circular connector.
The instruments are compatible in use with analog instruments on this point.
Analog operated instruments, can be hooked up using an 8-wire shielded cable, connected according to the
Bronkhorst High-Tech standard.
Each electronic P. C. board is set for one of the following output (and corresponding input) signals:
Signal output (sensor) input (setpoint)
code signal signal
A
0…5 Vdc 0…5 Vdc
B 0…10 Vdc 0…10 Vdc
F 0…20 mA (sourcing) 0…20 mA (sinking)
G 4…20 mA (sourcing) 4…20 mA (sinking)
For meters only the output signal is available.
At analog operation the following parameters are available:
- measured value
- setpoint (controllers only)
- valve voltage (controllers only)
Note:
When operating the instrument through the analog interface it is possible to connect the instrument to any
supported fieldbus system (or RS232-interface with special cable) for reading/changing parameters (e.g.
controller response or other fluid selection).
For FLOW-BUS versions of the instruments a readout/control module for digital instruments can be
temporarily connected to the M12 Connector.
instrument
output
0V common
mA
+
-
I
Current output signals
Sourcing