SonaSwitch
®
The SonaSwitch® MINI-A is now calibrated to
your desired target distance for full scale
analog voltage output.
7.
Minimum Voltage Range Setting.
Place the target at the desired distance for the
minimum voltage output. This can be either
the minimum distance or the maximum
distance between the sensor and the target
(see step 5 above).
Depress and hold the “MIN RANGE SET”
push button, and wait for the “RANGE
WINDOW LED” indicator to stop flashing and
the transducer generates a “chirp” sound.
Note: The minimum voltage output will be a
value between 0.01 and 0.05 volts (50 mv),
due to the analog output’s amplifier offset
voltage.
The SonaSwitch® MINI-A is now calibrated to
your desired target distance for zero analog
voltage output.
8. Gain Adjustment
Note: The “GAIN” potentiometer has been preset
at the factory to provide the best performance for
the range of your SonaSwitch® MINI-A. In the
event that it is changed, the steps below will
assist you in returning it to the proper value
To calibrate the “GAIN” setting, place the
target at the maximum desired detection
distance.
Rotate “GAIN” pot fully counter clock-wise
(CCW).
Slowly rotate “GAIN” pot clockwise (CW) until
detection occurs.
Rotate “GAIN” pot clockwise (CW) an
additional 1/16 turn.
Note: Always calibrate “GAIN” for minimum
gain required for reliable detection. Excessive
gain may result in false target detection.
9. Range Window LED
The Range Window LED performs two
indication functions:
During Setup procedures, the LED will flash
as the set-up values are programmed into the
sensor.
During
normal
operation,
the LED will illuminate,
indicating that a target is detected between the
“Minimum Range Set” point and the “Maximum
Range Set” point. For targets outside this range,
the LED will be off.
10. Range Output
The range output indicates when a target is
being detected between the MIN and MAX range
setting.
SonaSwitch® MINI-A &
SonaSwitch® MINI-AE
Push Button Settable
Ultrasonic
Sensor
Installation and
Operation
Manual
