RPS-401A-80P Self Contained Sensor for Level Control and Industry

  • Adjustable Zero & Span
  • Sensing Range 8-80 in.
  • Narrow Sensing Beam
  • LED Strength Indicator
  • Short Circuit Protected
  • Wide Temperature Range
  • Analog Current & Voltage Outputs
  • Reverse Polarity Protected
  • Self Contained Barrel Housing
  • Input Voltage 20-30 VDC
  • RPS-401A in PVC Housing
  • Wide Chemical Resistance Range (PVC)
  • Selectable Inverted & Non-Inverted Outputs
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The RPS-401A-80P analog ultrasonic sensor is mounted in a PVC barrel housing and is completely self contained. It is powered by 20-30 VDC and is reverse polarity protected. It also has a narrow beam angle which enables it to get into tight places. A flat target can tilt up to 10 degrees and still be detected. The RPS-401A-80P has 2 short circuit protected analog outputs, 4-20mA and 0-10 VDC. These outputs can easily be inverted and can be scaled over almost any range by means of adjusting the zero (P1) and span control (P2). The (P1) potentiometer must be adjusted first. Both analog outputs can be used at the same time.

For set-up purposes an LED strength indicator is provided. This LED is Green when not detecting and changes to a bright Red as a target moves into place depending on how much reflected signal is coming back from the target. The frequency of operation for the RPS-401A-80P is 140kHz. The RPS-401A-80P is constructed of PVC. The barrel measures 30mm x 105mm. A standard 6′ cable is provided.

ADJUSTABLE 10″ – 19″ 80″ Range 0v – 10 v 4 mA – 20 mA

Minimum Analog Ranging

Analog sensing in the Minimum sensing configuration means detecting an object over a 9″ range with the RPS-401A-80P. This 9″ span can be adjusted to occur over any part of the sensors range. For example it could be adjusted to occur from 8″ to 17″ or 25″ to 34″. This is done by means of the two potentiometers on the sen-sor. This sensor has a 8:1 adjustment ratio on its analog output, meaning that the RPS-401A-80P has a maximum span of 72″ (range 8″ to 80″). The analog output can also be adjusted any-where between the 8″ and 80″ range. These adjustments are made by the two potentiometers on the sensor. With no more than two adjustments of each potentiometer the desired span will be achieved.

ADJUSTABLE 8″ – 80″ 80″ Range 0v – 10v 4mA – 20mA

Maximum Analog Ranging

Analog sensing in the Maximum ranging configuration means detecting an object over an 8″ to 80″ range with the RPS-401A-80P. This 72″ span goes from the sensors minimum sensing distance of 8″ to its maximum sensing distance of 80″. The adjustment procedure is the same as described in the minimum analog ranging section. The RPS-401A-80P in the maximum ranging configuration detects an object over a 72″ range. This span goes from the sensors min-imum sensing distance of 8″ to its maximum sensing distance of 80″. This sensor also has a 8:1 adjustment ratio on its analog output so its minimum analog ranging capability is a span of 9″. These adjustments are made by the two potentiometers on the sensor.

ADJUSTABLE 8″ – 80″ 80″ Range 10v – 0v 20mA – 4mA

Inverted Analog Outputs

The RPS-401A-80P has the ability to invert its analog outputs, meaning that the current or voltage will decrease as distance from the sensor
increases. For the current output to be inverted the voltage output needs to be tied to the positive of the supply voltage of the sensor. This then will invert the current output to 20mA – 4mA. To make the voltage output inverted 10v – Ov the current output needs to be tied to the positive of the supply voltage. In the standard mode of operation (non-inverted) P1 adjusts the near point 4mA (Ov) and P2 adjusts the far point 20mA (10v). In the inverted mode of operation P1 adjusts the near point 20mA (10v) and P2 adjusts the far point 4mA (Ov). Always adjust the (P1) potentiometer first.

Specifications: RPS-401A-80P

Operational Range: Adjustable 8″ to 80″
Power Input: 20 – 30 VDC Reverse
Polarity Protected
Input Current: 80 Milliamps Max.
Ambient Temperature -40° to 60°C or -40° to 140°F
Humidity: 0% – 95% Non -Condensing
RPS-401A-80P Housing: PVC Housing with a PVC sensing face Current Sourcing
Outputs: Analog Output
4-20mA Inverted & Non-Inverted
(Load 0 ” to 500 ” maximum)
Analog Voltage Output
0-10 volts Inverted & Non-Inverted
(Load 500 ” to “)
Short Circuit Protected
Transducer Frequency: 140 kHz
Response Time: 35mS Typical
Weight: Sensor only 4 ounces
Sensor plus cable
shipping weight 9 ounces

Mounting Consideration:
The performance of this sensor can be
influenced by direct metal contact.
This zone is 12mm/.50″ measured from the sensor face. See Fig. G

Figure:
A – Angle of Tilt
B – Beam Spread
C – Wiring Diagram RPS-401A Standard
D – Wiring Diagram RPS-401A Current Inverted
E – Wiring Diagram RPS-401A Voltage Inverted
F – Connector Diagram “QD” option (Male View) G – Mounting Dimensions

Part Number Range Output
RPS-401A-80P 8″ – 80″ 0 – 10VDC and 4 – 20 mA Analog
RPS-401A-80P-QD 8″ – 80″ – Quick Disconnect
5000118-3 6′ Cable for “QD” option
5000118-6 16′ Cable for “QD” option
View Adjustment Procedure
View Data Sheet