Simplicity 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 this type of design is also being demanded ever more frequently.
Used, plant manufacturers like to depend on pre-assembled cables with fitted connectors, since this completely eliminates needing to fix the single strands into the thermometer head. Waste required for assembly and for disassembly during calibration or when replacing the instrument can thus be reduced considerably. Another advantage is that, in the event of changing out any instrument, incorrect re-wiring could be avoided.
In general, additionally it is worth noting that, to guarantee the operational safety of plants and for their maintenance and servicing, it really is imperative that equipment is easy to clean and that moisture protection reaches a maximum. These requirements make an application for all process components, also beyond your process (in the ?splash zone?).
Note
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 therefore enabled a straightforward and reliable connection with a 4-pin M12 connection cable. The high-quality sealing concept of this connector has also 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 offers thermometer products with connection heads ? models TR20, TR22 (TR22-A, TR22-B), TR25 ? with Foul for the hygienic, food and pharmaceutical industries.