A pressure switch is used for a wide variety of applications. High pressure cutoff for safety purposes, low pressure detection for proper production and others. The pressure switch can be compact, reliable and cost effective. It can operate based on a number of methods.
The vibrating fork type level switch working principle is simple and effective. This makes vibrating fork type level switches (a.k.a. tuning fork type level switches) reliable, cost effective and very popular for use in detecting the presence or absence of liquids and bulk solid materials. The vibrating fork type level switch working principle is based upon detecting the change in harmonic vibration frequency of the sensing element as a result of the presence of the target media.
Radar has its origins in the first half of the 20th century. However, radar level measurement did not come on the scene in use as a continuous level measurement technology until the later part of the 20th century. Radar level measurement is available in both contact and non-contact forms. The contact form of radar level measurement is known as guided wave radar a.k.a. TDR (time domain reflectometry) and the non-contact form of radar level measurement is through-air or open-air radar.
What is RF admittance? Why is it a popular level sensor technology? What are its strengths and weaknesses? Is RF admittance the same thing as RF capacitance. From the popular book titled “Solids Level Measurement and Detection Handbook” published by Momentum Press we quote the following:
“In electrical engineering terms admittance is the inverse of impedance (1/Z = Y, where Z is the impedance measured in ohms and Y is the admittance), which is the resistance to the flow of current within an AC circuit. The term RF is an acronym for radio frequency. As a type of electromagnetic radiation, radio waves are generated by electrical signals which oscillate in a specified range between approximately 9kHz and 300kHz. However, it is possible where a variant of this technology can be implemented where the electromagnetic radiation is at a frequency even lower, below that traditional radio band. Most manufacturers use technology radiating within the radio band, typically around 100kHz.”
An air vibrator is a pneumatically driven industrial vibrator that can help your production process. The air vibrator breaks clogs, promotes material flow, busts up material bridging and can help eliminate ratholing of powder materials in bins and silos. Bulk solid materials often have flow problems due to cohesion and adhesion. Cohesion is the binding and attraction between the material particles, adhesion is the sticking or attraction between the material and the bin walls.
Float type level switches come in many varieties, but have one common element. That is, they are all based on the principle of buoyancy. A float of certain volume and weight will be buoyant in fluids of a certain minimum density. This allows a switch to be incorporated and triggered at certain positions of the float.
There are a myriad of technologies used for process level transmitters. Hydrostatic, magnetostrictive, magnetic float and also RF level transmitters are very popular. So how do they work and why are they great for almost any material? The RF level transmitter simply relates the capacitance measured in a vessel to the height of the level in the vessel making it accurate and reliable
Asphalt is all around us, primarily in roads and parking lots. The production of asphalt is done in facilities that are often referred to as asphalt batch plants or simply asphalt plants. Level switches are key components in a variety of locations within these plants, including the level switch float type used in water totes, which can be used for many purposes.
Level switches come in many varieties. One of the more popular level switches is the Magnetic Float Level Switch. This level switch is used for detecting the presence and absence of liquids in a wide range of applications and industries. How does it work? When is it best used? When should you avoid using it? We briefly explore this.