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The Tru-Flo AC Pump is a state-of-the-art continuous
pumping and electronic asphalt metering assembly built
to ensure precise measurement of liquid asphalt.
The system is completely skid mounted. It's inlets
and outlets are flanged, and all internal parts are
jacketed and plumbed for hot oil for quick field installation.
A removeable basket strainer is provided on the inlet
side of the pump skid. A 3-way valve is controlled using
a solenoid to direct the flow from the AC tank to the
plant. A second 3-way valve is provided to manually
divert the flow to the tanker during the AC meter calibration.
An AC motor is used to drive the asphalt pump. A variable
frequency drive is included to control the pump speed
pending flow requirement. By changing the speed of the
motor, the rate of the asphalt flow changes.
The operation of the Tru-Flo AC Pump Skid has a special
rotor which is the only moving part in the system. Attached
to one end of the motor is an optical encoder. As the
asphalt flows through the asphalt meter, the encoder
turns and sends a signal back to the electronics. A
temperature sensor indicates the asphalt temperature,
providing additional feedback to the electronics. The
electronic controller also provides automatic temperature
compensation.
One moving meter part reduces the chances for out of
tolerance conditions. Adding precise electronic calculations
gives the meter an accuracy of 0.2%. In comparison,
other asphalt flow meters maintain accuracy of between
0.5 to 5%. This translates into a dramatic annual cost
savings by lowering the amount of liquid asphalt used.
SPECIAL NOTE:
The Tru-Flo AC Pump Skid is an excellent replacement
for the old-style "Brodie Type" meters and completely
eliminates multiple gear electronic stack-ups. Contact
Us for more Information.
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