What is NAMUR proximity switch?
What is NAMUR proximity switch?
A NAMUR proximity sensor has a switching circuit similar to a typical proximity sensor, but instead of making and breaking an external circuit, the switching circuit is used to change the output current flow by altering an internal resistor network.
How does a Namur sensor work?
Answer: A NAMUR sensor is a 2-wire proximity sensor that is usually powered by 8 VDC. When the sensor detects the target, the current flow through the sensor drops to less than 1.2 mA. When the target moves away from the sensor and is not detected, the current flow increases to above 2.1 mA.
What is a NAMUR?
NAMUR is a type of sensor output that gives an on or off indication. NAMUR is a German acronym for (normenarbeitsgemeinschaft für Mess- und Regeltechnik in der Chemischen Industrie). This translates to: Standardization Association for Measurement and Control in Chemical Industries.
How does an inductive proximity switch work?
Inductive Proximity Sensors detect magnetic loss due to eddy currents that are generated on a conductive surface by an external magnetic field. An AC magnetic field is generated on the detection coil, and changes in the impedance due to eddy currents generated on a metallic object are detected.
What is NAMUR NE43 standard?
NAMUR NE43 is a standard used to define the operating AO-LL and AO-UL values. Similar to the Standard Analog Output Signal, NAMUR NE43 compliant transmitters are designed to output signals greater than the 4 to 20 mA “Base” signal, allowing for a small amount of Signal Saturation.
What is NAMUR instrumentation?
What is NAMUR setting?
NAMUR NE43 is a standard used to define the operating AO-LL and AO-UL values. To be compliant to NAMUR NE43, the transmitters are set in the factory to have a AO-LL and AO-UL of 3.8 mA and 20.5 mA respectively. These values are set and can not be changed.
What is NAMUR full form?
User Association of Automation Technology in Process Industries (NAMUR) (German: Interessengemeinschaft Automatisierungstechnik der Prozessindustrie), established in 1949, is an international association for users of automation technology and digitalization in the process industries with its headquarters in Leverkusen.
How do you wire a 2 proximity sensor?
Connecting the 2-wire sensor can be done by merely connecting the blue wire to the input and the brown wire to the 24V source. The process is the same for replacing a NPN 3-wire sensor. In this case you would just connect the brown wire to the input and the blue wire to the ground of your power supply.
What is NAMUR recommendation?
NAMUR Recommendations (NE) provide an explanation of the state of the art and regulations for member companies as well as for manufacturers, scientists and authorities. NAMUR worksheets (NA) are an aid in the form of checklists and instructions for practical work in companies.
Is the Namur proximity sensor open or closed?
The NAMUR proximity sensor operates much like a typical proximity sensor but does not have an open or closed output condition. Instead, a NAMUR proximity sensor will produce two different and distinct current output levels corresponding to the target position.
Why do I need a Namur output sensor?
NAMUR is a type of sensor output that gives an on or off indication. There are different reasons why you may need a NAMUR sensor. I will go through some of them here. First, some information about NAMUR.
How are inductive proximity sensors used in a signal amplifier?
NAMUR Inductive Proximity Sensors WORKING PRINCIPLE These sensors act as a variable resistor. With the active surface free, they have a low output resistance. In the presence of a metal target the output resistance is high. The resulting variation in the current is used to control a signal amplifier. TECHNICAL CHARACTERISTICS
Where is the blue connector for the Namur sensor?
The normally-closed NAMUR sensor and blue connector can be placed directly in the hazardous area, while the current-limiting intrinsic safety barrier and power supply are located in the safe area. Why Would I Use a NAMUR Output Sensor?
