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Specifications
B-1
Physical Specifications
The ADFM consists of a transducer assembly placed in the flow connected
to a controlling set of electronics by a waterproof cable. The transducer
assembly is designed to be intrinsically safe (IS) compliant. An optional IS
zener diode barrier may be mounted in an electronics assembly for interface
to the transducer. The electronics can record data in a stand-alone mode,
output data real-time via modem or serial communications, or do both. Ex-
ternal AC, DC, or internal alkaline batteries power the system.
The ADFM Velocity Profiler™ transducer assembly (shown in Figure B-12)
contains four individual velocity transducers that use piezoelectric ceramics
for emitting and receiving acoustic signals. These four transducers measure
velocity throughout the depth of flow. A fifth transducer is mounted in the
center, pointed vertically, to measure the depth of flow. The transducer as-
sembly casing is manufactured of plastic to provide years of corrosion free
service.
ADFM Technical Manual (January 2000)
Specifications
B
Appendix
page B-1
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