The use of an M12 coupler connector at the bond head of a thermometer, rather than standard cable outlet, enables quick and safe connection. In the hygienic, food and pharmaceutical industries such a design can be being demanded a lot more frequently.
In practice, plant manufacturers prefer to depend on pre-assembled cables with fitted connectors, since this completely eliminates having to fix the single strands into the thermometer head. The time necessary for assembly and for disassembly during calibration or when replacing the instrument can thus be reduced considerably. Another advantage is that, in case of changing out any instrument, incorrect re-wiring could be avoided.
In general, it is also worth noting that, to guarantee the operational safety of plants and because of their maintenance and servicing, it is imperative that equipment is simple to clean and that moisture protection is at a maximum. These requirements apply for all process components, also beyond your process (in the ?splash zone?).
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Satisfied has adapted the full-metal M12 coupler connector, familiar from the TR21 (TR21-A, TR21-B, TR21-C) product line, to the cable outlet for thermometers with connection head and therefore enabled a straightforward and reliable reference to a 4-pin M12 connection cable. The high-quality sealing concept 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, that have been designed for the high IP requirements of sanitary applications, WIKA now also offers thermometer products with connection heads ? models TR20, TR22 (TR22-A, TR22-B), TR25 ? with a hygienic M12 coupler connector for the hygienic, food and pharmaceutical industries.g