Bronkhorst LIQUI-FLOW mini (from 01-07-2013) - Manual (Page 13)

LIQUI-FLOW™ mini © 2013 Bronkhorst High-Tech BV
Bronkhorst High-Tech BV
13
3.3 Manual interface: micro-switch and LEDs
In this section the manual instrument interfaces are described. In section 3.3.1 the micro-switch operation is explained,
section 3.3.2 specifies the LED functionality.
3.3.1 Micro-switch operation
By means of manual operation of the micro push-button switch some important actions for the instrument can be selected or
started. These options are available in both analog and digital operation mode.
These functions are:
Reset alarm
Reset instrument (firmware program reset)
Auto-zeroing
Restore factory settings (in case of accidently changing of the settings)
Using digital RS232 or RS485 operation it is also possible to set:
Bus-address (only required for RS485)
Baudrate
The tables below describe the micro-switch functions that can be started in normal operation mode and during power-up:
LEDs Time
Pushed
Indication
Green Red
Off Off 0 – 1 sec. No action. Pressing a switch shortly by accident will not start any unwanted
reaction of instrument.
Pressing the switch 3x briefly with intervals of max. 1 sec. forces the
instrument to indicate its bus-address/MAC-ID and baud rate.
Check section 3.5 for more details.
Off Off 1 – 4 sec. In case of min/max alarm or counter batch reached: Reset alarm (only if reset
by keyboard has been enabled)
For FLOW-BUS only: if the node address is occupied, this function will install a
free node-address on FLOW-BUS.
Off On 4 – 8 sec. Reset instrument
Instrument program will be restarted and all warning and error messages will
be cleared. During start-up the instrument will perform a (new) self-test.
On Off 8 – 12 sec. Auto-zero
Instrument will be re-adjusted for measurement of zero-flow (not for pressure
meter/controller). See section 2.11.
On On 12 – 16 sec. Prepare instrument for FLASH mode for firmware update.
Instrument shuts down and both LEDs turn off.
At next power-up instrument will be active again.
LED indications using micro-switch at normal operation mode of an instrument