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Inside the transducer's housing, a stainless steel cable is wound on a precisely machined constant diameter cylindrical spool that turns as the measuring cable reels and unreels. To maintain cable tension, a torsion spring is coupled to the spool. The spool is coupled to the shaft of a rotational sensor (a potentiometer or rotary encoder). As ...
SPX Corporation is an American manufacturing company, headquartered in Charlotte, North Carolina. [2] [3] [4] The company operates within four markets: heating, ventilation, and air conditioning (), detection and measurement, power transmission and generation, and engineered solutions.
A cable reel is a round, drum-shaped object such as a spool used to carry various types of electrical wires. [1] Cable reels, which can also be termed as drums, have been used for many years to transport electric cables, fiber optic cables [ 2 ] and wire products.
A Rogowski coil is a toroid of wire used to measure an alternating current I(t) through a cable encircled by the toroid. The picture shows a Rogowski coil encircling a current-carrying cable. The output of the coil, v(t), is connected to a lossy integrator circuit to obtain a voltage V out (t) that is proportional to I(t).
Alternatively, a sheave can be integrated and installed within the housing frame. In this case, the system can be set up anywhere around the drum. Oceanographic installations that spool rope up to 46 layers have demonstrated that level winders give synchronized and controlled spooling in the harshest, most testing conditions.
An optical sensor is placed above or under the web to be controlled. Standard sensors are not affected by dirt, steam or temperatures up to 160 degrees Celsius. Optical sensors work by sending a beam of light at the web, and seeing if the light is reflected or not.