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7 analog operation – Bronkhorst LIQUI-FLOW L30 User Manual

Page 15

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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