■
Introduction
The
MVF Series
Micro Flow Vortex Gas Flowmeter (hereafter called the
MVF
) is a
thermal vortex gas flowmeter featuring a wide measurement range. It uses the Azbil
Corporation-designed Micro Flow sensor (or “µF sensor”) as a vortex generator.
■
Features
• 35 % more of the
MVF
’s component materials are available for re-use or recycling,
as compared with the conventional
CMK
model.
• Temperature and pressure compensation functions are integrated into the
MVF
.
Since expensive temperature and pressure compensation devices are not required,
a large cost reduction can be expected.
• This device incorporates a µF (Micro Flow) sensor a mere 1.7 mm square and
0.5 mm thick, made possible by silicon micro-machining and thin-film technolo-
gies. By using this high-sensitivity, high-speed sensor to detect vortex frequency,
measurement rangeability of 100:1 has been achieved.
• The entire
MVF
is provided with wide range of functions to meet various applica-
tions needs: LCD display function, analog output (4 to 20 mA), integrating calcu-
lation, display and integral pulse output (open collector).
Also, an RS-485 communications function is provided as a standard feature, so
a large amount of instrumentation cost reduction can be achieved when data is
uploaded.
■
System
Communications (RS-485)
CMC10L
PLC
Smart Terminal
(EST-Z, etc.)
Pulse output
4 to 20 mA
instantaneous flow rate
output
Controller
(SDC, etc.)
Slave station
(MVF, etc.)
RS-232C
Host station
(PC, etc.)
Pulse counter
PCG13
Chapter 1. INTRODUCTION
1
