Bronkhorst IQ+FLOW (till 01-07-2013) - Manual (Page 8)

9.17.045 page 8
2.7 Analog / digital operation
Analog operation (single channel versions only)
For analog operation refer to the “Hook-up diagram IQ + FLOW®” or
use an RJ45 loose-end cable (7.03.419) to connect the required
signals.
Digital RS232 operation
Digital operation over RS232 can be
established when using the following setup.
Using a RS232 cable or a USB-RS232 conver-
ter 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.
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.
Power:
+15...+24 Vdc
Analog output:
0…5Vdc / 0…10Vdc
0…20mA / 4…20mA
Multi-functional switch
Status LED
Error/Warning LED