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Functional Description
Sludge Finder 2 sends a transmit pulse to the transducer, which then emits a high
frequency ultrasonic sound wave perpendicular to the transducer face, the returned
echo is received by the Sludge Finder 2. The time taken to receive the echo is
measured and the distance from the transducer face to the sludge interface is
calculated.
The relays can be programmed to activate alarms, pump starters, or other control
equipment. There is an isolated 4-20 mA output for each of two transducer
channels that can be connected to a recorder or PLC to monitor the sludge
interface independently from that shown on the display. Finally, there is an RS232
port, so that the Sludge Finder 2 can be operated remotely by a PC or other
equipment to download/upload parameters or view real time echo traces.
Sludge Finder 2 can be programmed either by the built-in keypad, or by PC via
the RS 232 Serial Interface. All parameters are stored in non-volatile memory, so
are retained in the event of power interruption. A second backup copy of all
parameters can also be retained in the Sludge Finder 2 memory, in case an
alternative set of parameters needs to be stored.
Six user definable control relays with individual setpoints and intelligent
performance logging software features ensure maximum control versatility.
The Pulsar Sludge Finder 2 ultrasonic sludge detector has been designed to
provide maintenance-free fit and forget performance.
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