RPS-400-30 Ultrasonic Proximity Sensor0 pages

RPS-400-30
Features
The RPS-400-30 has a 22mm barrel housing, completely
self-contained, 12-30VDC powered ultrasonic proximity
sensor. A sealed transducer provides protection in
environments where dirt and moisture are a problem. The
sensor is constructed of Delrin plastic with a silicon rubber
sensing face. This sensor is range or distance sensitive,
enabling the sensor to detect objects only within the desired
range, and reject objects outside the desired range. The
RPS-400-30 is a solid state sensor and has an NPN open
collector transistor output. For initial setup purposes, a built
in LED indicator illuminates when the ultrasonic wave from
the sensor is reflected back to the unit within the preset
range. The sensing range is fixed at less than 5 inches by
connecting the green lead to the black lead of the cable; or
adjustable up to 30 inches by connecting a resistor/ potentiometer
between the green and black leads. The resistor
chart on the following page provides resistor values and
approximate resulting sensing ranges. These sensors provide
precise proximity or level sensing regardless of color,
density, or transparency. They are equally effective on liquid,
metal, plastic, and glass targets. Standard 6 foot cable
is provided. Optional cable lengths are available.
Proximity Detection
Proximity detection is the detection of an object at a
given range. The detection range of the RPS-400-30 can
be controlled by a resistor or potentiometer wired to the
green and black leads of the unit, and is adjustable to the
desired detect distance. Any object within the desired range
is detected, while objects outside the desired range are ignored.
The detect point is independent of size, material, or
reflectivity. The proximity option is denoted by the part
number RPS-400-30.
Hysteresis Detection
The RPS-400-30 can be furnished with Hysteresis
Control capability. The Hysteresis sensor has a fixed detect
point equal to the sensors minimum range and an adjustable
turnoff point up to the sensors maximum range.
Simply stated, an object will be detected at the minimum
range, and will remain detected until the object is no longer
within the adjustable turnoff point. (See Figure Above). The
Hysteresis option is denoted by the part number RPS-
400H-30.
Adjustable
5” detection pt. 30”
Proximity Detection Hysteresis Detection
Adjustable
6” Turnoff pt. 30”
Fixed
Detect pt. 5”
• Self Contained
• Sensing Range 5 - 30"
• Narrow Sensing Beam
• High Frequency 222kHz
• Operates in Hostile Environments
• Operating Voltage 12 - 30VDC
• NPN Transistor Output
• Externally Adjustable Sensing Range