Fc Principle Of Operation; Fc (Flow Control); Description Of Sensor-Pcb Leds - Deckma Hamburg OMD-24 Series Instruction Manual

8.4

FC Principle of operation

8.4.1 FC (Flow Control)

OMD-24 FC are equipped with a Vortex Flow Sensor (For technical information see
Appendix II). The Sensor-PCB displays flow status via several LEDs for commissioning
purposes. A flow rate between 0.7 l/min to 4.5 l/min can be measured. If the flow rate
through the Measuring Cell is below 0.7 l/min for more than 4 seconds, or if the sample
is not flowing at all, the Instrument will go to Alarm condition and issue
a "Status: Flow!" message. If a flow rate of more than 0.7 l/min is achieved, the unit will
be out of alarm.

8.4.2 Description of Sensor-PCB LEDs

Green
Flow > 2.0 l/min
Green Flow > 1.5 l/min
Green Flow > 1.0 l/min
Yellow Flow > 0.7 l/min
RED Flow Meter ON
RED Flow OFF
Green Sensor PCB Power Supply OK
Green Vortex Flow Meter Power Supply OK
Page: 47