BRONKHORST IN-FLOW, Instruction Manual

Page: 30 / 38

BRONKHORST
®
page 30 9.17.022
5 Digital instrument
See document number 9.17.023 for detailed description.
This document is available as PDF on the Multibus documentation/software tool CD.
6 Interface description
For a description of the available interfaces see document numbers:
9.17.024 for FLOW-BUS
9.17.025 for PROFIBUS-DP
9.17.026 for DeviceNet
9.17.027 for RS232
9.17.035 for Modbus
9.17.063 for EtherCAT
9.17.095 for PROFINET
These documents are available as PDF on the Multibus documentation/software tool CD.
7 TROUBLESHOOTING
7.1 General
For a correct analysis of the proper operation of a flow/pressure meter or controller it is recommended to
remove the unit from the process line and check it without applying fluid supply pressure. In case the unit is
dirty, this can be ascertained immediately by loosening the compression type couplings and, if applicable the
flange on the inlet side.
Bronkhorst
®
does not recommend to open the housing, but in case that the housing has to be opened, it
should be done with great care, because the connection of the fieldbus and main p.c.board is accomplished
by a small flatconductor cable.
Energizing or de-energizing of the instrument of the instrument indicates whether there is an electronic
failure.
After that, fluid pressure is to be applied in order to check behaviour.
If there should be suspicion of leakage, do not check for bubbles with a leak detection liquid as this may lead
to a short-circuit in the sensor or p.c.board.