Mindray A8 - EFCS Flowmeter System

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2.2.5 EFCS Flowmeter System
2.2.5.1 EFCS Flowmeter Monitoring Board
The EFCS flowmeter monitoring board is the core control part of the EFCS flowmeter of the
anesthesia machine. The EFCS flowmeter monitoring board controls the O2/N2O/air flow
through the proportional valve, and monitors and feeds back the O2/N2O/air flow through the
flow sensor. In addition, the total flow monitored by the O2 flow sensor is processed by the
EFCS flowmeter monitoring board. Moreover, the EFCS flowmeter monitoring board drives the
three-way valve, switch valve, and electromagnet, so as to switch to the mechanical BFCS when
the proportional valve, flow sensor, or other electrical components fail. This board is configured
with EFCS flowmeter software.
Installation position of the EFCS flowmeter monitoring board
EFCS flowmeter monitoring board (top view)
EFCS flowmeter
monitoring board