Namur signal

NAMUR is a type of sensor output that gives an on or off indication, namur signal. I will go through some of them here. A NAMUR sensor is a non-amplified sensor that supplies two namur signal 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. They did this by forming working groups in four different areas to come up with recommendations and guidelines to improve technology development and integration. These recommendations, identified by the 'NE' designation, aim to define equipment requirements, ensuring they are specifically tailored for applications and purposes.

Namur signal

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. 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. NAMUR proximity sensors limit current so that the current is not capable of causing ignition in hazardous atmospheres. Typical proximity sensors that continually make and break an output circuit could create sparks that could cause an explosion. Using this technology, there are 2 output current values depending upon the position of the target. If you have any questions about using NAMUR sensors, add them in the comments below and we will get back to you in less than 24 hours.

But physical shape and appearance are the only characteristics they have in common. Once all relevant products are included, namur signal, send the list to us and you will get a quotation within 24 hours.

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.

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.

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? The Namur NE43 is a recommendation that gives a guideline on how a sensor fault can be indicated to a control system by means of the mA signal. When an instrument is calibrated and working properly, its output signal should stay between 4mA and 20mA for as long as process conditions are normal. But sometimes it happens that the process conditions deviate from the normal operation, such as the overfilling of a tank. Its output signal is then out-of-range and located in the saturation region. Another reason why an output signal may be in the saturation area is that analog signals drift over time. The low range value of the process normally corresponds to 4 mA after calibration, but within a few years, the output signal may drift, leaving the transmitter to send only 3.

Turk lirasi

If you have any questions about using NAMUR sensors, add them in the comments below and we will get back to you in less than 24 hours. Read More Related Posts. Got a friend, client, or colleague who could use some of this information? Prevention is the protection principle for intrinsic safety. These examples showcase the versatility and importance of NAMUR sensors in different industrial applications. NAMUR sensors with this output characteristic are marked with "N0" normally-closed characteristics or "N1" normally-open characteristics in the type designation. Industrial Safety. The isolated switch amplifier must be installed outside the explosion-hazardous area. Industrial Networking. The typical output characteristic of a NAMUR can be represented as follows: 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. But physical shape and appearance are the only characteristics they have in common. Be the first to get exclusive content straight to your email.

We take a closer look at NAMUR sensors, providing insights into their functionality and highlighting their significant roles across various industrial sectors.

Motion Control. If you are interested in the exact description and its English translation, you can find it easily on the internet. All courses. Control Valve Problem Causes Repeated Plant Trips In this article, you will learn the control valve problem that causes repeated plant trips and its root cause analysis. As can be seen, the connection has two wires only since these sensors have current and not voltage outputs. These examples showcase the versatility and importance of NAMUR sensors in different industrial applications. Maintenance Automation. Mahmoud Salama. If you have any questions about using NAMUR sensors, add them in the comments below and we will get back to you in less than 24 hours. NAMUR sensors with this output characteristic are marked with "N0" normally-closed characteristics or "N1" normally-open characteristics in the type designation. 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. Learn from industry experts. The power supply necessary for the functioning of the electronics inside the sensor is also conveyed through these two wires.