BRONKHORST®
Page 28
EL-FLOW
Base
Series Mass Flow Controllers
9.17.061
Value zero will be indicated by a period of 1 sec. off (0.5 sec. off + 0.5 sec. off).
When value zero is wanted, press switch shortly and release it again within 1 sec.
Before each action of flash-
counting, the LED’s to be used for counting will flash in a high frequency.
(Pattern: 0.1 sec on, 0.1 sec off). As soon as the switch is pressed-
down, this LED (or both LED’s) will be
off and the counting sequence will start.
3.8 LED indications
LED
’s
Time
Indication
Green
Red
slow wink
0.2 sec on,
0.2 sec off
Wink mode
By a command send to the instrument.
fast wink
0.1 sec on,
0.1 sec off
Switch-released, selected action started.
Green and Red LED turn-by-turn indication modes (no switch used)
Green LED
Time
Indication
Off
Continuously
Power-off or program not running
On
Continuously
Normal running/operation mode
Flash
0.2 sec on,
0.2 sec off
Special function mode
Instrument is busy performing any special function.
E.g. auto-zero or self-test
Green LED indication modes (no switch used)
Red LED
Time
Indication
Off
Continuously
No error
Flash
Variable
Bus activity on the Modbus interface
On
Continuously
Critical error message
A serious error occurred in the instrument
Instrument needs service before further using
Red LED indication modes (no switch used)
