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284-512-350 © 1990 (Rev 6/97) Max Machinery, Inc.
General Description
General Description
The 284-512 transmitter is a photo optic device which converts the rotary motion of a typical
Max flow meter into an electrical signal whose frequency is proportional to the flow meter
RPM. It has two output formats: a square wave of 100 cycles per revolution and a two phase
output of 50 cycles per revolution. The single phase output has an antidither feature, which
makes it useful for low flow zero velocity applications which may involve momentary
reverse flows. A memory circuit will hold up to 128 pulses of negative flow, outputting only
the net forward flow. The two phase output is useful for bi-directional applications. Both
outputs are CMOS and TTL compatible and are generally able to drive at least 1000 feet of
shielded cable.
The 284-512 can operate from a voltage source of 4.5 volts to 30 volts. A wide range on
board regulator protects the circuitry from transient supply noise. No adjustments are
required for different supply voltages.
Discontinued
