Banner WORLD-BEAM QS30 Water Sensor - Manual (Page 9)

Accessory Apertures
Opposed-mode QS30 sensors may be fitted with apertures to narrow or shape the sensor’s effective beam to more closely match the
size or profile of the containers being sensed. A common example is the use of slot type apertures to detect edges of liquid levels.
NOTE: The use of apertures will reduce the excess gain (see attentuation table below).
Model Description
APQS30-040
Circular hole
1 mm (0.04") diameter – 6 each
APQS30-100 2.5 mm (0.10") diameter – 6 each
APQS30-200 5 mm (0.20") diameter – 6 each
APQS30-040H
Horizontal slot
1 x 12 mm (0.04" x 0.47") – 6 each
APQS30-100H 2.5 x 12 mm (0.10" x 0.47") – 6 each
APQS30-200H 5 x 12 mm (0.20" x 0.47") – 6 each
APQS30-040V
Vertical slot
1 x 17 mm (0.04" x 0.67") – 6 each
APQS30-100V 2.5 x 17 mm (0.10" x 0.67") – 6 each
APQS30-200V 5 x 17 mm (0.20" x 0.67") – 6 each
APQS30-DVHX2 Kit containing two of each aperture above – 18 total
APQS30-DVH
Kit (included with each emitter/receiver) containing one each of
aperture models: APQS30-040, APQS30-040H, APQS30-040V
Model
Attenuation Factor
Aperture on Both Emitter and Receiver Aperture on Receiver Only
APQS30-040 5,000 90
APQS30-100 300 20
APQS30-200 20 5
APQS30-040H 60 10
APQS30-100H 13 4
APQS30-200H 4 2
APQS30-040V 60 10
APQS30-100V 13 4
APQS30-200V 4 2
Examples for Apertures and Water Thickness vs. Excess Gain
The QS30EXH2O / QS30RXH2O sensor pair is used with a horizontal aperture model APQS30-040H on the receiver at 1 meter sensing
distance. The excess gain is reduced to approximately 200; 50 mm of water will completely block the signal.
When the same aperture is used on both the emitter and receiver at 1 meter, the excess gain is approximately 40; 35 mm of water
will block the signal.
NOTE: This example does not include the attenuation from the container holding the water.
WORLD-BEAM QS30H2O Series
P/N 136166 rev. C www.bannerengineering.com - tel: 763-544-3164 9