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Pepperl+Fuchs Blog

Does My Application Require a NAMUR Output Sensor?

Posted by Andrew Hund on Fri, Aug 25, 2017

NAMUR sensors solve the same applications that standard inductive and capacitive sensors or rotary encoders would—but they are safe to use in hazardous areas. NAMUR output sensors are ideal for applications where the presence of a volatile gas, vapor, dust, or fiber creates a possible hazard.


To prevent an explosion in hazardous areas, these sensors protect the circuit by operating at 8.2 V and less than 5 mA. These levels prevent the device from storing sufficient energy to initiate an explosion. NAMUR sensors are connected to an isolating amplifier, which limits the current and voltage to the sensor and amplifies the signal upon return.

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Topics: Rotary Encoders, Inductive Sensors, Capacitive Sensors, Applications

Ask an Expert Industrial Sensors - Episode 20

Posted by John Appleson on Thu, Sep 01, 2016

This episode of Ask an Expert for industrial sensors examines and provides answers to interesting sensing questions we've received from customers just like you. We explore and answer these questions:

  1. Can the inductive sensor NBB1.5-5GM25-E2-V3 detect non-ferrous metals? How does that affect the sensing range?
  2. An inductive sensor won't read above 500 rpm. What's the problem here?
  3. What does the fault error F-4 mean on an AS-Interface network?
  4. Does the MTT-6000 RFID reader need an antenna or read head?
  5. Do you have a capacitive sensor for high temperatures, about 150 °C?
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Topics: Inductive Sensors, Capacitive Sensors, AS-Interface, Ask an Expert, RFID

Ask an Expert Industrial Sensors - Episode 19

Posted by John Appleson on Fri, Jul 22, 2016

This episode of Ask an Expert for industrial sensors examines and provides answers to interesting sensing questions we've received from customers just like you. We explore and answer these questions:

1. Can the inductive sensor NJ6-F-N operate at -40 °C?
2. How far can a target reflector move sideways before a photoelectric sensor can't read it anymore?
3. Do you have distance sensors compatible with EtherNet/IP and ControlLogix Safety PLC?
4. What sensors could sense plastics and metals through a plastic tray?

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Topics: Inductive Sensors, Capacitive Sensors, Photoelectric Sensors, Ask an Expert, Laser Sensors, Distance Sensors, Positioning Systems

Anti-Swing Software and Inductive Sensors Raise Your Mobile Equipment to a Higher Level

Posted by Patricia Stafford on Thu, Jul 07, 2016

Controlling the motion of cranes, hoists, and other mobile equipment while avoiding accidents is a vital part of ensuring their safe and efficient operation. Vertical lift applications can be trickier and pose greater risks than working with horizontal conveyor belts, which tend to be more steady and predictable.

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Topics: Inductive Sensors, Applications, Inclination Sensors, Positioning Systems

Ask an Expert Industrial Sensors - Episode 18

Posted by John Appleson on Fri, Jun 10, 2016

This episode of Ask an Expert for industrial sensors examines and provides answers to interesting sensing questions we've received from customers just like you. We explore and answer these questions:

1. Can NJ40+U4+W inductive proximity switches be run in series?
2. Does the NBB4-F1-E0 inductive sensor come in a different Hz to eliminate mutual interference?
3. Do you have beam benders for photoelectric sensors?
4. Looking for a Class I, Div.1 inductive sensor that does not need an IS barrier...
5. Do you have a wire-draw displacement sensor?

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Topics: Rotary Encoders, Inductive Sensors, Photoelectric Sensors, Ask an Expert

Ask an Expert Industrial Sensors - Episode 17

Posted by John Appleson on Fri, May 06, 2016

This episode of Ask an Expert for industrial sensors examines and provides answers to interesting sensing questions we've received from customers just like you. We explore and answer these questions:

1. Motion detection sensor RMS-M-NA. Could this sensor be used to detect people in an area of a museum?
2. Can the capacitive sensor CJ40-FP-A2-P1 survive in a vacuumized vessel?
3. What is the Teach-in cable for the ultrasonic sensor UB100-F77-E2-V31, and how is it used?
4. Can you use an incremental rotary encoder with a higher PPR to replace one with a lower PPR?
5. What is the life expectancy of an inductive sensor in an outdoor, humid environment?

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Topics: Rotary Encoders, Inductive Sensors, Capacitive Sensors, Ultrasonic Sensors, Photoelectric Sensors, Ask an Expert

Ask an Expert Industrial Sensors: Episode 16

Posted by John Appleson on Fri, Mar 18, 2016

This episode of Ask an Expert for industrial sensors examines and provides answers to interesting sensing questions we've received from customers just like you. We explore and answer these questions:

1. Replacing a diffuse mode photoelectric sensor that is tied to an AS-Interface module.
2. Do you have MTTF data for the NMB1.5-8GM35-E0-FE inductive sensor?
3. Can diffuse mode sensors be used to detect metal drums in a hazardous area?
4. How to choose the correct power supply for RFID control interface unit IC-KP-B17-AIDA1?
5. Where on your website can I download AS-Interface system wiring guidelines and connection diagrams?

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Topics: Inductive Sensors, Cables/ Cordsets, AS-Interface, Photoelectric Sensors, Ask an Expert, RFID

Ask an Expert Industrial Sensors: Episode 15

Posted by John Appleson on Thu, Jan 28, 2016

This episode of Ask an Expert for industrial sensors examines and provides answers to interesting sensing questions we've received from customers just like you. We explore and answer these questions:

1. What does the LED message 'bad' mean on my WCS-IP 111 interface module?
2. Does the 973EX4WI-A10T inductive sensor require an intrinsic safety barrier or circuit?
3. How can you test the SJ10-N inductive slot sensor?
4. The RC10-14-NO inductive ring sensor is used in a rivet gun, but can give a false count at times. How to correct this?

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Topics: Inductive Sensors, Ask an Expert, Positioning Systems

Ask an Expert Industrial Sensors: Episode 14

Posted by John Appleson on Thu, Dec 17, 2015

This episode of Ask an Expert for industrial sensors examines and provides answers to interesting sensing questions we've received from customers just like you. We explore and answer these questions:

1. Inductive ring sensor RJ21-E2 - is there a reduction factor for aluminum targets, or is it for ferrous targets only?
2. Is there a minimum mounting distance between WCS positioning system read heads?
3. Do you have a photoelectric sensor that can be installed outdoors in temperatures down to -40 °C?
4. Is there a proximity sensor that will detect steel, but not aluminum?

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Topics: Inductive Sensors, Photoelectric Sensors, Ask an Expert, Positioning Systems

The 6 Key Attributes for Selecting Inductive Sensors

Posted by Eric Miller on Fri, Nov 13, 2015

Detecting the presence or absence of a metal may seem like a fairly simple concept, but narrowing your selection to a specific sensor can sometimes be a difficult project. These 6 key attributes can help get you moving in the right direction when it comes to selecting an inductive sensor.

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Topics: Inductive Sensors

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