Owner manual

Part C Technical data, Block diagram and Measuring principle Section 6
02/2001
ALTOFLUX 2W
41
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1 AD converter
•
overdrive-proof signal processing,
processes flow peaks
up to 20 m/s (65ft/s) more rapidly and
accurately
than competition modules
•
digital signal processing and sequence
control
•
high-resolution Delta-Sigma A/D
converter,
digitally controlled and monitored
•
high signal-to-noise ratio, signal
processing: patent pending
2 Field power supply
•
The low-loss field power supply generates
the pulsed, electronically controlled DC
current for the magnetic coils of the
primary head
•
The field current ensures matched to the
power, an optimum signal amplitude and
signal-to-noise separation
3 Current output, HART
®
modem
•
galvanically isolated from all other
terminals, but not from power booster
•
converts the digital output signal from the
µP 2 microprocessor into a proportional
current
•
communication via HART®
4 Binary output
•
galvanically isolated from other groups
•
can be used as pulse or status output
•
output (B1), terminal for up to 100 mA
•
output (B2), terminal according NAMUR
(DIN 19 234)
5 Display/operator control unit
•
large LCD display, 3-line
•
3 keys for operator control of the signal
converter
•
connection to the internal IMoCom bus
6 IMoCom bus plug connector
•
for connection of external control and test
devices
7
Power booster input