The Banner 925 Series ULTRA-BEAM is an economical ultrasonic sensor with relay output and a sensing range of 20 in to 20 ft (0.5 to 6 m). ULTRA-BEAM "925" sensors are ideal for long-range proximity requirements which fall beyond the limits of photoelectric response, and are the solution for many applications which require reflective sensing of no reflective materials. Popular applications include bin-level sensing/control and presence sensing of transparent materials. Sensing range is easily adjusted using the top-mounted 15-turn clutched range control. When the range is set, objects passing through the sensor's area of response will be reliably sensed from the set range down to 16 in from the face of the ULTRA-BEAM. The minimum range setting is 20 in (0.5m). Objects which pass beyond the set range will be ignored. The ULTRA-BEAM has an easily-visible top mounted red LED indicator which lights whenever an object is detected. For reliable detection, objects to be sensed must present at least one square foot (0,1 square meter) of surface area for each 10 ft of sensor-to-object distance. The response curve (above) illustrates the sensing pattern which results for a 2 square foot target approaching from either side. The pattern is drawn for the maximum range setting of the ULTRABEAM. Symmetry of this pattern may be assumed in all sensing planes. The ULTRA-BEAM is ruggedly constructed with epoxy-encapsulated circuitry and housed in a tough, corrosion-proof VALOX® enclosure. The ultrasonic transducer is protected by a stamped metal screen. The transducer will not be damaged by temporary contact with moisture, but must be kept free of heavy contamination for efficient operation. The output is an SPDT form "C" relay for easy interfacing to most loads (see specifications). An integral 5-pin minifast connector is standard.