Bronkhorst IQ+FLOW (from 01-07-2013) - Manual (Page 9)

Bronkhorst High-Tech B.V.
IQ+FLOW 9 9.17.045
Digital RS232 operation
Digital operation over RS232 can be established
when using the following setup. Using a RS232
cable or a USB-RS232 converter with a PC will
allow you to use (free) Bronkhorst® software for
Windows, such as FlowDDE and FlowPlot. See
also section 3.4.
Digital RS485 operation
With digital operation over RS485 a bus-system with multiple instruments can be set up. See section 3.5 for possible
systems.
2.8 Multi-functional switch operation
Micro-switch operation (single channel versions only)
Using the micro-switch on the instruments, several actions can be monitored and
started. The green LED is used for status indication. The red LED is used for
errors/warnings/messages. The micro-switch can be used to start several
actions, such as auto-zero, restore factory settings and bus-initialisation actions,
if applicable. See specific zero-procedure below and section 3.3 for more details.
Multi-functional switch
Status LED
Error/Warning LED
Rotary switch operation (multi-channel versions only)
Select the communication type and Baud rate with the “COMM. TYPE” switch.
Select the node address with the “MSD” and “LSD” switch (e.g. MSD = 1 and LSD
= 9 selects node 19 for channel 1, but also node 20 and 21 for channels 2 and 3).
See section 3.3 for more details.
2.9 Purging
Do not apply pressure until electrical connections are made. When applying pressure to the system, avoid pressure
shocks in the system and increase pressure gradually. Also decrease pressure gradually when required.
In systems for use with toxic or other dangerous fluids, purging for at least 30 minutes with a dry, inert gas (like
Nitrogen or Argon) is absolutely necessary before use. After use with toxic or other dangerous fluids, complete
purging is also required before exposing the system to air.
Warm-up time
Let the IQ + FLOW® warm-up for at least 30 minutes for best accuracy.