P503 Flat Rotary Sensor Assembly

Unpackaged sensor assembly for OEM integration


This sensor at a glance

Available in any measurement angle from 15 to 160°

Longer operating life than a potentiometer

Fast delivery options available

Easily packaged

Low cost

Compact and lightweight

Independent Linearity:
< ±0.25% up to 100 °

Resolution: Infinite

Temperature range: -40°C to +125°C (depending on electronics version)

The P503 RIPS® (Rotary Inductive Position Sensor) is a low-cost assembly designed particularly for OEM users.

Like all Positek sensors it provides a linear output proportional with angle of rotation. Each unit is supplied with the output calibrated to the angle required by the customer, between 15 and 160 degrees.

With suitable mounting and bearings, overall performance, repeatability and stability are outstanding over a wide temperature range.

This very compact sensor, supplied as a printed circuit board sub-assembly, has a range of electrical options.
The P503 is ready to mount directly in customer's equipment. Connections to the sensor are made via solder pins.


Board Outline Standard
56 x 32 x 6mm
Board Outline Buffered
56 x 32 x 12.5mm
31mm, OD 6mm
For full mechanical details see drawing
Measurement Range
Any angle from ±7.5° to ±80°
Independent Linearity
<±0.5% up to 100° - typical ±25°
Temperature Coefficient
<±0.01%/°C Gain & <±0.01%FS/°C Offset
Output Characteristics
See Graph

<0.02% FSO

Shaft Torque

<20mNm static

Frequency Response

>10KHz (-3dB);
>300Hz (-3dB); 2 wire 4-20mA

Output Signal and Output Load

Output Signal
Output Load
0.5 to 4.5 V DC ratiometric
5k Ohms min
0.5 to 4.5 V DC
5k Ohms min
± 5V DC
5k Ohms min
± 10V DC
5k Ohms min
0.5 to 9.5 V DC
5k Ohms min
4 to 20mA (2 wire)
300 Ohms max at 24V
4 to 20mA (3 wire sink)
950 Ohms max at 24V
4 to 20mA (3 wire source)
300 Ohms max at 24V
Supply Current
12 mA Typical 20 mA max (voltage versions)

Temperature Limits

-40 to +125°C (5V input only)
-20 to +85°C
-40 to +125°C


EMC Susceptibility
EN 61000-6-2
EMC Radiated
EN 61000-6-3
IEC 68-2-6: 10g
IEC 68-2-29: 40g
350,000 hrs 40°C Gf
Electrical Connections
Solder pins

Positek offers a range of options for its standard sensors. Each sensor is manufactured to suit each customer's preferences. If your requirement is outside the options given below, Positek can modify/ redesign a sensor to suit your specific requirement. Standard options are available as below:

Measurement Range

Factory set to any length from ±7.5° to ±80° in increments of 1°. For example, if your application requires 90° measurement, then Positek will manufacture the sensor specifically for this angular range. The sensor will measure 90° however will still rotate through 360°.

Electronic Options

Output Signal
Supply Input
Option Code

0.5V to 4.5V DC ratiometric
+5V DC nom. ±0.5V

0.5V-4.5V DC
+24V DC nom. +9-28V
±0.5V DC
±15V DC nom. ±9-28VB
0.5-9.5V DC
+24V DC nom. +13-28V
±10V DC±15V DC nom. ±13.5-28VD
4-20mA (2 wire)
+24V DC nom. +18-28V
4-20mA (3 wire sink)
+24V DC nom. +13-28V
4-20mA (3 wire source)
+24V DC nom. +13-28V
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