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Contactless Magnetic Rotary Sensors ,[object Object]
Introduction ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Hall Effect Rotary Position Sensors ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
SRH Series Rotary Position Sensors ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Rugged design – Superior Protection ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
High Performance ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Part Numbering Not applied to single output parts 1 = Clockwise (1 output only) 2 = Anticlockwise 3 = Both output clockwise 4 = Both output anticlockwise 5 = CH1 CW, CH2 ACW
Temperature Derating SRH280P SRH280DP
SRH Output PWM Output Analog Output PWM level = 5V for 9-30V supply Vs for 5V supply
Additional Resource ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Newark Farnell

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Contactless Magnetic Rotary Sensors

  • 1.
  • 2.
  • 3.
  • 4.
  • 5.
  • 6.
  • 7. Part Numbering Not applied to single output parts 1 = Clockwise (1 output only) 2 = Anticlockwise 3 = Both output clockwise 4 = Both output anticlockwise 5 = CH1 CW, CH2 ACW
  • 9. SRH Output PWM Output Analog Output PWM level = 5V for 9-30V supply Vs for 5V supply
  • 10.

Editor's Notes

  1. Welcome to the training module on Contactless Rotary Sensors.
  2. This training module will introduce SRH series of contactless rotary position sensors.
  3. Sometimes one needs to know the angular as opposed to the linear position of an object. While it is possible to create mechanical linkages that convert a rotary motion into a linear displacement, there are also ways to measure rotary motion directly. A hall effect sensor is one of the methods to rotate a uniform field around a Hall-effect sensors. Hall-effect rotary position sensors are able to measure rotary motion or small linear motion and are typically small and relatively low in cost. The basic Hall element relies on a magnetic field to sense motion; a principle based on the small electrical potential created when a stationary magnetic field is placed perpendicular to a current-carrying conductor. When the shaft is rotated at the sensing modules face, the circuit accurately measures up to 360° of angle. There is no contact between the sensing circuit and the actuator making the sensor ideal in extreme environments of high temperatures, shock and vibration.
  4. The Penny and Giles SRH series of contactless rotary position sensors have been specially developed to provide maximum performance under extremes of temperature, humidity, vibration, shock and immersion. Using the latest advances in 12bit Hall effect sensing technology, this new generation of sensors are factory programmed to provide the user with a wide range of previously unavailable options, including single or dual redundant outputs, clockwise or anticlockwise rotation and measurement angles from 0-20° to 0-360° in only 1° increments. This sensor range is ideally suited to operate in extremely hostile applications that are typical in motorsport, off-road specialist vehicles, military vehicles and heavy industrial machinery.
  5. All models in the SRH series have been designed to offer the best combination of materials and mounting styles that ensure survivability in the most rugged applications. Penny and Giles use sealing systems and cable connections that offer superior protection against the most hostile of operating conditions. Models SRH280/DP and SRH501/2P can withstand operating temperatures from -40°C to +140°C and have been tested to withstand severe shock and vibration. All sensors have protection to at least IP68 rating, with models SRH501P & SRH502P offering protection to IP69K. With an EMC immunity of 100V/m, these position sensors are ready for the harshest applications.
  6. The SRH series has an impressive performance specification and can operate from a 5Vdc regulated or 9 – 30Vdc supply. Outputs can be PWM or analogue voltage (nominal 0.5 - 4.5Vdc) over the measurement range with clockwise or anticlockwise shaft rotation. A choice of 341 different electrical angles from 20° to 360° are possible. 12 bit resolution (0.025%) is available over the selected measuring range, with a non-linearity better than ±0.4% and temperature stability better than ±50 ppm/°C. The sensor’s analogue output option has a very low output noise level of less than 1mV rms.
  7. Here shows the part numbering for SRH series of contactless rotary position sensors. As the part numbering system indicates the measurement range, output type, output phasing of each channel, shaft style, cable length, etc., you can learn about the basic characteristics of sensors easily.
  8. Here shows the maximum operation temperature de-rating graphs. The device can be operated from -40 ºC to +140 ºC under 5V DC supply. However, when supply voltage is from 9V DC, the Derate upper temperature limit by 0.57°C for every 1V increase in supply. If the maximum operating temperature is exceeded, the voltage regulator will shut down to protect the device from overheating.
  9. Here shows examples of sensor outputs for three different angles.
  10. Thank you for taking the time to view this presentation on “ Contactless Magnetic Rotary Sensors” . If you would like to learn more or go on to purchase some of these devices, you may either click on the part list link right beside the play button on the TechCast portal, or simply call our sales hotline. For more technical information you may either visit the Penny and Giles site, or if you would prefer to speak to someone live, please call our hotline number, or even use our ‘live chat’ online facility. You may visit element14 e-community to post your questions.