Coating insulates probe rods
A
Victrex product story
Edited by the Engineeringtalk editorial team
Jan 15, 2008
Sontec's Vicote-coated sensor probe rod rotates inside an isolating body made from Victrex Peek and is electrically isolated from the container wall as well as from its own process attachment.
Victrex' Vicote coating has been selected by Sontec Sensorbau to seal and electrically insulate probe rods in measurement sensors.
The sensors are used in the food processing industry to detect the level of liquid media in containers or pipelines.
Vicote Coatings are based on Victrex Peek polymer, a linear, aromatic, semi-crystalline material.
Sontec's Vicote-coated sensor probe rod rotates inside an isolating body made from Victrex Peek.
The rod is electrically isolated from the container wall as well as from its own process attachment.
Electrical conductivity between the rod and the wall of the container or pipeline is used to detect the level of a liquid when the level becomes marginal.
The special geometry of the Victrex Peek isolating body allows for hygienic sealing of the sensor rod without any 'dead space'.
Electrical isolation of the probe rod against the container wall and around the penetration area of the process connection is critical in measurements of this type.
Vicote's set of properties make it the optimum material in this extremely demanding environment.
Its electro-static dissipative (ESD) properties ensure no deposits of a conductive medium can build up around the connection and adversely affect the measurement.
Vicote has excellent temperature resistance capabilities and very low creep.
Its excellent mechanical properties, wear and abrasion resistance lengthen the probe's service life.
Additionally, Vicote protects against mechanical damage when installing the probe.
Vicote Coatings are resistant to chemicals such as salts, water/steam, alkalis, acids and aromatic hydrocarbons.
They are FDA food contact approved.
Teflon coatings such as PFA and PTFE have been traditionally used for food applications, but despite sharing similar mechanical strength and FDA compliance with Vicote these coatings do not perform as well under the demanding conditions often found in the food-processing industry.
Abrasive components in the medium can erode coatings such as PFA, but Vicote is significantly more durable.
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