Connection design mini thermocouple

No connector is supplied for terminals with mini-TC connection. The conventional plugs can be used:

Connection design mini thermocouple 1:
Figure: mini thermocouple plug (dimensions only as guide values)

Mini-TC connectors are available from Beckhoff as accessories ZS3000-010x.

The color of the plug/socket indicates the type of material used. Ideally, plugs and sockets are of the same type and therefore made of the same material. The unavoidable TC cold junction then shifts into the measuring device and can be measured there optimally.

Alternatively, a certain plug can be inserted into a white universal socket made of copper, which is the second-best solution. The appropriate cold junction option must be selected in the device settings.

Note on strain relief: internal (integrated in the connector) and external (designed as an additional plate) strain reliefs are available on the market. Since the sockets in the ELM334x are close together, connectors with internal, height-neutral strain relief must be used, otherwise mechanical stresses will occur due to the additional mounting height. The connector height of 8 mm must not be exceeded.

Connection design mini thermocouple 2:
Left: recommended strain reliefs/sealing ring/kink protection, without mounting height; right: non-permissible strain reliefs, with mounting height