The use of an M12 coupler connector at the connection head of a thermometer, rather than a standard cable outlet, enables quick and safe connection. In the hygienic, food and pharmaceutical industries such a design is also being demanded ever more frequently.
In practice, plant manufacturers prefer to depend on pre-assembled cables with fitted connectors, since this completely eliminates needing to fix the single strands into the thermometer head. The time required for assembly and for disassembly during calibration or when replacing the instrument can thus be reduced considerably. Today is that, in the event of changing out any instrument, incorrect re-wiring can be avoided.
In general, it is also worth noting that, to ensure the operational safety of plants and for his or her maintenance and servicing, it really is imperative that equipment is simple to clean and that moisture protection is at a maximum. These requirements apply for all process components, also outside the process (in the ?splash zone?).
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WIKA has adapted the full-metal M12 coupler connector, familiar from the TR21 (TR21-A, TR21-B, TR21-C) products, to the cable outlet for thermometers with connection head and thus enabled a simple and reliable reference to a 4-pin M12 connection cable. The high-quality sealing idea of this connector in addition has been proven in the extreme requirements of autoclavable sensors. In addition to the already established TR21 miniature resistance thermometers, which were created for the high IP requirements of sanitary applications, WIKA now also offers thermometer products with connection heads ? Crushing , TR22 (TR22-A, TR22-B), TR25 ? with a hygienic M12 coupler connector for the hygienic, food and pharmaceutical industries.