Namur signal

One could be easily fooled by assuming that a NAMUR sensor namur signal a typical proximity sensor because they look very much alike. But physical shape and appearance are the only characteristics they have in common.

Get prepared for the challenges of Industry 4. NAMUR sensors with this output characteristic are marked with "N0" normally-closed characteristics or "N1" normally-open characteristics in the type designation. Note: In explosion-protection applications, the operating location of the intrinsically safe NAMUR sensor is located in the explosion-hazardous area. The isolated switch amplifier must be installed outside the explosion-hazardous area. NAMUR sensors are usually connected to external switch amplifiers that convert the current variation into a binary output signal. Subscribe to our newsletter and receive regular news and interesting information around the world of automation.

Namur signal

As can be seen, the connection has two wires only since these sensors have current and not voltage outputs. The power supply necessary for the functioning of the electronics inside the sensor is also conveyed through these two wires. In this case, as the distance S between the sensor and the object to be detected increases, there is an increase in the current in the sensor itself. Such a low output impedance is intended and aimed at avoiding, in the event of a fault, the creation of possible ignition sources in the event of a fault. Of course, for the correct use of devices with NAMUR output, it is necessary to use appropriately designed hardware. The normative reference regarding the electrical output parameters of a NAMUR sensor is the EN Low-voltage switchgear and controlgear — part control circuit devices and switching elements — DC interface for proximity sensors and switching amplifiers NAMUR. NAMUR sensors are typically used in potentially explosive environments, as intrinsically safe devices: the energy that passes through them does not constitute an ignition hazard. If it is also necessary to have a certain degree of functional safety, if the sensor provides protection in this sense, safety hardware with NAMUR inputs is also available. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment.

Our devices, including switch amplifiers like the BABnamur signal, and frequency converters such as, Anamur signal, BA andare designed for namur signal integration with NAMUR sensors. So instead of a switching manner as in normal PNP or NPN proximity which can be very dangerous in hazardous areas, you now have a 1 mA or a 3 mA to indicate the presence or not of an object. Discover the underlying technology behind NAMUR sensors and their importance in different industries.

NAMUR sensor is a proximity sensor developed to be used in industrial hazardous areas, where the risk of explosive gases or combustible dust is present or formed in the facility. A proximity sensor is a non-contact type sensor that detects the presence of an object. Proximity sensors can be implemented using various techniques such as optical, ultrasonic, and Hall effects. The two most commonly used proximity sensors are the inductive proximity sensor and the capacitive proximity sensor. A proximity sensor will either give or prevent a volt signal to an input module like a PLC. Standard three-wire proximity sensors use two wires for power and the third for the output, they have either a PNP or an NPN transistor output that switches the sensor if it detects a target. The transistor output works as a mechanical switch powered by a 24 VDC power supply using two wires, the third wire carries the signal status of the sensor and is usually connected to a DI card of a PLC.

One could be easily fooled by assuming that a NAMUR sensor is a typical proximity sensor because they look very much alike. But physical shape and appearance are the only characteristics they have in common. As illustrated in our animation, the proximity sensor acts just like a simple switch. When the target is away from the sensor, the switch is open. When the target is close to the sensor, the switch is closed. In most industrial applications today, a proximity sensor is not connected to an actual load resistance but is connected to an input of a PLC or DCS Digital Input Module. If you are interested in the exact description and its English translation, you can find it easily on the internet. The NAMUR proximity sensor has been in use for many years but like any electronic device, there are many different symbols in use. NAMUR proximity sensors are used in classified hazardous location areas that have explosive gas, dust, or fibers present.

Namur signal

The mA analog signal is a widely spread standard in the industry for several good reasons. This type of signal is used by the majority of transmitters, PLCs, and distributed control systems. A variation of their output current between 4 and 20mA means that the transmitter is working perfectly fine and the process value to be measured is within the measurement range. But how should the output signal behave if the process value falls outside the measuring range or if the transmitter fails?

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We will get back to you by phone or email within 24 hours. Discover the underlying technology behind NAMUR sensors and their importance in different industries. Maintenance Automation. The power supply necessary for the functioning of the electronics inside the sensor is also conveyed through these two wires. We take a closer look at NAMUR sensors, providing insights into their functionality and highlighting their significant roles across various industrial sectors. Depending on the application, you could need any one of these products to detect your target, but if they meet the NAMUR standards, the output would be the same. This voltage is kept constant by using two different current levels to indicate if the sensor is detecting a target or not. NAMUR is a type of sensor output that gives an on or off indication. Get prepared for the challenges of Industry 4. Machine Monitoring System in Nutshell The online machine monitoring system is used for rotating equipment to monitor and protect the motors from critical vibration and temperatures. Post comment. This amplifier could be dual rated for personal safety and classified hazardous locations for gas, dust, or fibers. January 11, A NAMUR sensor is a non-amplified sensor that supplies two different signal levels depending upon switch state.

We take a closer look at NAMUR sensors, providing insights into their functionality and highlighting their significant roles across various industrial sectors. Discover the underlying technology behind NAMUR sensors and their importance in different industries. Their initial focus was on setting standards for how different devices connect and work together, such as the mA technology and proximity switches.

Knowledge Base for Capacitive Sensors. A NAMUR output sensor is required in installations where special safety measures are necessary locations with explosion hazard, or personal safety. Their initial focus was on setting standards for how different devices connect and work together, such as the mA technology and proximity switches. Start your learning journey today! Functioning as 2-wire devices, they differentiate between the presence and absence of an object by switching between two distinct current levels, in accordance with the EN standard. About Us Careers What's New? These values are very small to be able to ignite an explosion or a fire in a hazardous area. Register here to receive our newsletter. A NAMUR sensor is a non-amplified sensor that supplies two different signal levels depending upon switch state. Post comment. The standard symbol of NAMUR sensors is shown in the picture below: As can be seen, the connection has two wires only since these sensors have current and not voltage outputs. For Individuals. The isolated switch amplifier must be installed outside the explosion-hazardous area. NAMUR sensors do not switch a transistor output, they modify their impedance when they detect a target. Imagine it as a kind of electrical dance!