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Flow sensors are placed over the outside of a non-metallic hose, such as rubber, to detect the density of metal within. If steel shot is flowing within the hose it is detected and a signal is then transmitted to a flow monitor shown above. The 399 sensors produce a frequency shift signal and the 599 series sensors produce a 0-5 Vdc output. These devices provide an output signal proportional to metal in the sensor. Variations of media velocity for a given flow rate will affect the detected signal. If you move the sensor further away from the valve or orifice then the velocity of the shot is greater and the density and thus the signal is reduced. A common application of these devices involves setting the process to the proper operation and then adjusting the "span" to achieve the 5.0 Vdc output. Variations of flow from that level are therefore reported. If more accurate calibration is desired see the series of MagnaValves that can be factory calibrated.
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EI HOME | ABOUT | CONTACT US | DISTRIBUTORS SHOT PEENING & BLAST CLEANING UNIVERSE ©2003 Electronics, Inc. All rights reserved. |
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