WIKA Resistance thermometer For sanitary applications WIKA TR22-A sensor replaceable
Applications
■■ Sanitary applications
■■ Food and beverage industry
■■ Bio and pharmaceutical industry, production of active ingredients
■■ Paint finishing systems
Special features
■■ Simplified calibration through replaceable measuring inserts
■■ Materials and surface finish quality in accordance with the standards of hygienic designs
■■ Stainless steel connection head in optimised hygienic design
■■ Pt100, 4 … 20 mA or HART® protocol, FOUNDATION™ fieldbus and PROFIBUS® PA output possible
Description
The model TR22-A resistance thermometer is used for temperature measurement in sanitary applications. The process connections meet the stringent requirements, in terms of materials and design, of hygienic measuring points. For increased hygiene requirements in the ambient area of the measuring point, a stainless steel head is available in an optimised hygienic design. It enables easy cleaning of the measuring instrument, particularly for the splash zone in food
production. Due to the rotatable screw connection to the connection head, it is possible to loosen the connection head and to adjust it in the desired position. The connection head can be removed together with the measuring insert. This allows the resistance thermometer to be calibrated along with the whole
measuring chain, i.e. without disconnecting the electrical connections. In addition this avoids having to open the process, and thus the risk of contamination is minimised. The spring-loaded measuring insert guarantees the contact between the sensor tip and the bottom of the thermowell and thus ensures a fast response time and high accuracy. The welded junction between the thermowell and the flange
makes the use of a sealing as additional material in those areas redundant which are in contact with the product.
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