Electrically conductive polymeric housing for process control equipment
OwnerIan George Watson, Ronald Gregory Hareinventors
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Abstract
An electrically conductive polymeric housing or enclosure for process control equipment. The enclosure comprises a moldable thermoplastic polymer and carbon nanotubes. The carbon nanotubes are generally uniformly dispersed within said moldable thermoplastic polymer, such that the surface resistivity of the housing is less than 109 Ohms for Level 1 compliance.
Claims10
An electrically conductive polymeric housing for process control equipment comprising:
- (a) a moldable thermoplastic polymer, and
- (b) carbon nanotubes dispersed within said moldable thermoplastic polymer, and said electrically conductive polymeric housing having a surface resistivity in the range of 109 Ohms.
The electrically conductive polymeric housing as claimed in claim1, wherein said carbon nanotubes are generally uniformly dispersed and said moldable thermoplastic polymer comprises polypropylene.
The electrically conductive polymeric housing as claimed in claim1, wherein said carbon nanotubes are generally uniformly dispersed and said moldable thermoplastic polymer comprises flouropolymer resin.
A level measurement apparatus for measuring the level of a material contained in a storage container, said level measurement apparatus comprising:
- (a) an electrically conductive polymeric housing comprising a moldable thermoplastic polymer and carbon nanotubes dispersed within said moldable thermoplastic polymer, and said electrically conductive polymeric housing having a surface resistivity less than 109 Ohms;
- (b) a transducer mounted within said housing adapted to emit a signal and receive a reflected signal;
- and
- (c) a communication link coupled to said transducer for receiving and transmitting signals to a transceiver, and said transceiver including an electronic circuit for processing signals received from said transducer for determining the level of the material contained in the storage container.
Dependencies are inferred from the claim text.