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Functional Description
The blackbox ultrasonic Level System sends a transmit pulse to the
transducer, which emits an ultrasonic pulse perpendicular to the transducer
face, and the returned echo is sent back to the blackbox. The time taken to
receive the echo is measured and the distance from the transducer face to the
surface being monitored is calculated.
The blackbox utilises the unique DATEM software (Digital Adaptive
Tracking of Echo Movement). This is a unique digital mapping technique
developed especially for Pulsar’s range of ultrasonic level and control
systems. It gives the system edge when identifying the “true target level” in
the face of competing echoes from pipes, pumps or other obstructions.
The blackbox can measure from 0.41ft (0.125m) to 131 feet (40m) from the
transducer to the surface being monitored, dependent on the application and
transducer used.
The blackbox can measure level, space or distance and provide a
representative output. When fitted with the optional display and keyboard
it can also measure and provide an output representative of volume. There are
two user definable relays, with individual setpoints, which can be
programmed to activate alarms or control functions, a mA output that can be
used for remote indication purposes and a RS232 port, so that the blackbox
can be programmed or monitored remotely by a PC or other equipment.
The blackbox can be programmed either by PC, via the RS 232 Serial
Interface, using the supplied software (standard) or by hand held calibrator
(optional) which is connected to the blackbox via the RS 232 interface.
Those units fitted with the optional on board display can be programmed via
the integral keyboard.
All the parameters are stored in non-volatile memory, so are retained in the
event of power interruption.
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