Level Measurement
Kenco
Kenco Engineering

Sight Glass – A sight glass is a level indicator that utilizes some kind of see through material such as glass or clear thermoplastic to actually see the product being measured. Typically sight glasses are used when direct visual observation of process fluid is required.

Magnetic Level Gauge – A magnetic level gauge is often used in applications where, in the past, a sight glass may have been used. It utilizes a chamber, a magnetic float and a magnetic flag assembly. The chamber mounts where a sight glass would have, typically a top and bottom process connection, the float  rises and falls inside the chamber with the liquid level and magnetically communicates it’s position in the chamber to the flags on the outside of the chamber for the operator to see. There are also switches and transmitters that can be attached to these devices without making process connections.

Magnetostrictive – A magnetostrictive transmitter is a level transmitter that can be used as a stand alone insertion device or as an accessory to a Magnetic level gauge. The heart of the transmitter is the Waveguide which then has a magnetic float in close proximity to it. A pulse is induced in the waveguide by the momentary interaction of two magnetic fields, one from an electric current pulse launched along the waveguide and the other magnet inside the float. This interaction produces a strain pulse that travels along the wave guide. The location of the magnetic float is determined by measuring the elapsed time between the launching of the electronic pulse and the detection of the strain pulse by the sensor head. The time period measurement is used to produce a 4-20mA output.

Acoustic Wave or Ultrasonic – The transducer emits acoustic (sound) waves. These acoustic waves are directed through the air toward the process media surface. They are then reflected off of this surface and returned to the transducer. Then the received waves are converted into an electric signal.
The time difference between the transmitted wave and the received wave is proportional to the distance from the face of the transducer to the process surface.

UWT
UWT

Rotary Paddle – Level limit switch that is insensitive to dust, electrostatic charging, caking and temperature. Paddle switches are reliable and simple principle of function, a robust design with a large terminal space. These switches are certified for hazardous locations gas and dust, FM, CSA, ATEX. There are different designs available with various extensions and can be used as full, demand and empty detector.

Vibrating Fork – Level switch that is suitable for a wide range of level monitoring applications in granulated and powdered bulk goods starting from as light as 0.3 lbs. per cubic foot. These forks are offered in a modular design, maintenance free, various extensions, Hazardous area approvals and can be used as full, demand and empty detector.

Plumb Bob – Continuous contact level measuring system suitable for bulk goods and interface detection. The electromechanical system is very accurate measurement of level heights or level volumes over large measuring distances (up to 98 feet). Tape and rope versions are available with different sensing weights for all kinds of applications.

Acoustic Wave – Continuous, non-contact level measurement for solids and liquids for measuring ranges up to 197 feet. Acoustic wave offers precise measurement even in aggressive media and at process temperatures up to 300F. The sensors are highly accurate, have superior performance, map false echoes, intelligent echo evaluation, temperature compensation plus easy mounting and commissioning.

 


Control Plus Inc.

257 N. West Avenue • Suite 100 • Elmhurst, IL 60126 Tel: 630-279-9025 • Fax: 630-279-9026
Copyright Control Plus Inc. © 2008, All Rights Reserved