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

ADJUSTABLE
10" - 19"  80" Range
0v - 10 v
4 mA - 20 mA

ADJUSTABLE
8" - 80"  80" Range
0v - 10v
4mA - 20mA

ADJUSTABLE
8" - 80"  80" Range
10v - 0v
20mA - 4mA

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.

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.

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.