Hello
Could you tell me what we call the attached thermocouple
It is already used to measure temperature of journal bearing in gas compressor

Is there name to this type

 

simply, the bearing sensor

 

Sorry i mean this type of thermocouple which is likea wire connected inside

 

The description at the top right of the drawing, 2nd arrow down, "Type E Terminal head" is a fairly good indication that the element is a Type E.

 

If you're not sure which wire is + or - you can check with a multimeter in mV range and holding a lighter under the tip. When you connect + and - correct the mV reading should go op.

If you're not sure which specific thermocouple type you have (type E is a type, but for example J and K are also used a lot) you can always check with a proper thermocouple calibrator.
Also the color of the connected wires can give you can indication.

For more information on this, see our website: https://cascade.net/en/thermocouple/

 

Hello
Could you tell me what we call the attached thermocouple
It is already used to measure temperature of journal bearing in gas compressor

Is there name to this type

To me it looks like a skin type thermocouple.