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The TBT/TBR-600-40 is primarily a Through-Beam
sensor consisting of one transmit and one receive transducer,
in separate and self contained housings. It can count
up to 200 objects per second, as they pass through its
ultrasonic beam, from 0 to 40 inches. The sensors can
also be mounted in a Reflective position to detect targets.
The Thru-Beam and Reflective mounting options provide
the user with simple and accurate ways to detect the presence
of various objects. An adjustable Delay control is added
to vary the output response of the solid state relays
to the time, or count rate, of a moving target. An adjustable
Sensitivity control is added to provide highly accurate
target detection. P1 on the receiver (TBR) is labelled
sensitivity adjustment.
The LED is provided to show signal strength. The sensor
is factory set with P1 fully clockwise (cw), making the
LED solid red in colour. When P1 is fully counterclockwise
(ccw), the LED will be solid green in colour. After positioning
the sensors at the required distance, a typical adjustment
is performed by turning P1 ccw, causing the LED to change
from a solid red to a mostly red condition. The unit is
now properly adjusted. To achieve greater sensitivity
for smaller targets, turn P1 ccw so that the LED will
be more green in colour. To make the sensors less susceptible
to heavy dirt build up, turn P1 cw so that the LED will
be brighter red in colour. |
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