Screw connections and plug connections

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

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

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

The contacts of the plug connectors are made of the same material as the thermocouple (type K plug = 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 either plastic miniature connectors or standard thermocouple connectors made of plastic with strain relief - multi-pole plugs as well as panel jacks and panels are also available. They are available for thermocouple types K, J, E, T and N, as well as for high-temperature thermocouples of types S, R, B, C and A. Version: in color-coded housing of the respective type according to DIN EN 60584.
 
Type of plug connection Designation Plug (M) Designation Socket (F) Example
Miniature plug connection (flat) FM.+type FF.+Type FM.K for type K, FF.N for type N plug2
Standard plug connection (round) RM. +type RF. +type RM.K for type K, RF.N for type N plug1
The miniature connectors or standard thermocouple connectors are made of ceramic for the high-temperature range - multi-pin plugs as well as panel jacks and panels are also available. They are available for thermocouple types K, J, E, T and N, as well as for high-temperature thermocouples of 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 plug connection Designation Plug (M) Designation Socket (F) Example
Miniature plug connection (flat) FM. +type -KER FF. +type -KER FM.K-KER for type K, FF.N-KER for type N ceramic plug
Standard plug connection (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 for a wide range of different requirements and applications.

 

 
Type of plug connectionDesignation Plug (M)Designation Socket (F)Execution

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

A compression fitting is used to securely and tightly connect a mineral-insulated thermocouple or resistance thermometer to the temperature sensor. It enables 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 and for a production process with specific active substances.

Pressure 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 creates a tight and virtually 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 creates 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 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