Operation & Installation Manual V12-V6 2010-05-31.doc
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Figure 2-6 show a meter body according to this second concept (without side covers and
covers on top).
Figure 2-8: Small meter body
2.3.3. ALTOSONIC V12 signal converter
The ALTOSONIC V12 ultrasonic gas flow meter has a microprocessor based signal
converter. This processor controls the basic flow metering process, performs all the
calculations and stores a large amount of data. It offers serial ports (two RS 485 ports) to
communicate with other equipment, and programmable digital outputs (pulse/frequency
output and status outputs). Serial data communication to an RTU or DCS system is
supported by means of various protocols. Data can also be viewed using the display module
that is built in the signal converter enclosure.
2.3.4. Signal converter enclosure
The signal converter enclosure is made of stainless steel, it is explosion safe based on the
Ex d method of protection.
The signal converter housing consists of three separate compartments.
Each compartment is closed with a cover with screw thread that can be removed to give
access to the internals for repair (replacement) of parts. The front compartment cover has a
glass window enabling to see the LCD. Optical sensors behind the glass window allow
manual operation.
Figure 2-9: Converter housing
