The Hall effect current sensor has a core, Hall effect device, and signal conditioning circuit. The current conductor passes through the magnetic core, concentrating the magnetic field of the conductor. Hall effect devices are installed in magnetic cores at right angles to the concentrated magnetic field. Constant current excitation Hall devices in an aircraft. When an energized Hall device is exposed to the magnetic field of the iron core, a potential difference (voltage) is generated, which can be measured and amplified into a process level signal, such as 4-20mA or contact closure. Inductive sensors have wire wound cores and signal conditioners. The current conductor passes through the iron core, which amplifies the magnetic field of the conductor. The alternating current continuously changes the potential from positive to negative, and then changes at a rate of 50 or 60 Hz. The expanding and contracting magnetic fields induce current in the winding. The secondary current is converted into voltage and regulated to output process level signals, such as 4-20mA or contact closure.

Current sensors are an economical and reliable tool that is essential for monitoring equipment status, detecting process changes, and ensuring personnel safety.

Accurate real-time status feedback is required for controlling pumps, compressors, heaters, conveyors, and other electric loads.The conventional method to solve this monitoring problem is to use pressure switches, optical sensors, and zero speed switches.However, in the past decade, an increasing number of design and process engineers have discovered that current sensing is a more reliable and cost-effective method for monitoring and controlling electric loads.Solid state current sensors are easier to install and more reliable than electromechanical devices - and they can provide more information.

In short, measuring the current input of a device can give you a better understanding of its actual performance.Checking load changes immediately can help you improve throughput, reduce waste, and prevent catastrophic device failures.Continuous real-time monitoring of current consumption can also be used for trend analysis or status alarms.