Screw fittings and plug connections

There are numerous connection options for the perfect connection: Depending on your needs, we can supply your thermocouple with a suitable screw connection or plug-in connection - for use in the temperature range up to 200°C or even in the high temperature range up to 650°C.

The miniature connectors have flat contacts and connect sheathed thermocouples or resistance thermometers to thermoelectric cables or mineral insulated sheathed cables. They are particularly suitable for thermocouples with small outer diameters of 0.2-2.0 mm.

The standard connectors have round contacts and, with their solid pins, are suitable for secure connection of thermocouples with medium to large outside diameters of 3.0 -8 mm - even under demanding conditions.

The contacts of the connectors are each made of the same material as those of the thermocouple (type K connector = type K thermocouple), but have a different width to prevent polarity reversal during connection. They are coded according to DIN IEC color coding. Other international color codes e.g. ANSI are available on request.

For the temperature range up to 200°C, we offer a choice of non-metallic miniature connectors or standard plastic thermocouple connectors with strain relief - multi-pin connectors as well as panel-mounting sockets and panels are also available. They are available for thermocouple types K, J, E, T and N, and for high temperature thermocouples types S, R, B, C and A. Design: in color-coded housing of the respective type according to DIN EN 60584.
 
Type of connector Designation Plug (M) Designation Socket (F) Example
Miniature connector (flat) FM.+type FF.+type FM.K for type K, FF.N for type N plug2
Standard connector (round) RM. +type RF. +type RM.K for type K, RF.N for type N plug1
For the high temperature range, the miniature connectors or standard thermocouple connectors are made of ceramic - multi-pole connectors as well as panel-mounting sockets and panels are also available. They are available for thermocouple types K, J, E, T and N, and for high temperature thermocouples types S, R, B, C and A. Design: in white housing with color dot of the respective type according to DIN EN 60584. On request, e.g. for vacuum applications, they are also available without color dot.
 
Type of connector Designation Plug (M) Designation Socket (F) Example
Miniature connector (flat) FM. +type -KER FF. +type -KER FM.K-KER for type K, FF.N-KER for type N ceramic plug
Standard connector (round) RM. +type -KER RF. +type -KER RM.K-KER for type K, RF.N-KER for type N ceramic plug

LEMO® precision connectors for sheathed thermocouples
High-quality push-pull connector for all types of sheathed thermocouples. Can be used in a wide range of different requirements and applications.

 

 
Type of connectorDesignation Plug (M)Designation Socket (F)Execution

 
Metal plug connectionLM.0LF.0LEMO size 0lemo1
Metal plug connectionLM.1LF.1LEMO size 1lemo2
Metal plug connectionLM.0-IP68LF.0-IP68LEMO size 0 Protection class IP68lemo3
Metal plug connectionLM.1-IP68LF.1-IP68LEMO size 1 Protection class IP68lemo4

A compression fitting is used to securely and tightly connect mineral insulated thermocouple or RTD temperature probe to the temperature sensor. It allows a variable installation depth so that the thermocouple or resistance thermometer can be positioned individually and is ideally suited for transitions in special and closed measuring environments such as vacuum, steam, temperature as well as for a production process with specific active substances.

Compression fittings are made of stainless steel and screwed or welded into the appropriate threaded holes.

Version with stainless steel cutting ring: By tightening the union nut, the cutting ring is pressed into the sheath of the thermocouple and establishes a tight and almost non-detachable connection with the screw-in body and the union nut.

Version with PTFE clamping ring: By tightening the union nut, the clamping ring is pressed against the sheath of the thermocouple and makes a tight connection with the screw-in body and the union nut. The connection is detachable and allows both the thermocouple and the compression fitting to be reused. However, the PTFE clamping ring should be replaced for this purpose.

 
        
Screw connectionfor D in mmNPTF threadNPTF cutting ring (NPTF) Core hole mmmetric threadMetric cutting ring (M) Core hole mmMaterial 
TE-V10- ...1,01/166,20M8x17,001.4571compression fitting
TE-V15- ...1,51/166,20M8x17,001.4571
TE-V20- ...2,01/166,20M8x17,001.4571
TE-V30- ...3,01/1611,10M12x110,801.4571
        

Also available with PTFE clamping ring on request.

Note: The permissible operating pressure changes with increasing temperature. Depending on the material and the design of the customer's component, the permissible operating pressure may be at 200°C.   

For metal cutting rings:
Maximum permissible operating temperature = 650°C
Maximum permissible operating pressure at 20°C = 500 bar

For PTFE clamping rings:
Maximum permissible operating temperature = 200°C
Maximum permissible operating pressure at 20°C = 200 bar