Don´t use a thermocouple the mechanical stress and the conductivity of the point where you locate it will make the lectures change withtout accuracy, is better if you have a infrared lecture, there are plenty thermometers like that(gun thermomethers).

K-Type thermocouple is quite good for such application but also I agree with Mr. Luis Magana you can use Infrared Radiation (Pyrometer Technique). Regards

A agree that a k-type thermo couple would work fine for this job, you could potentially also use an "NTC". You will need to enssure good thermal contact to the sensor however. I think you will have great difficulty using an infrared thermometer as you need an object that radiates heat well i.e. has a high emissivity. Typically metal surface are very bad for this, and have to be painted mat black. The coolant will also mask what you are trying to measure with the infrared technique.

Respected Sir,

We are using Thermoelectric machining process. As the dielectric fluid will flow continuously near to the machining region at approx. 4 Bar pressure.

Will the thermocouples able to provide accurate measurement without any effect?

Thanks and regards.

Hi Sandeep, so long as the resistance of the fluid is not significant (if in contact with the bare thermocouple wires) I cannot foresee any problems.

Respected Sir,

Thanks for the valuable suggestions. Sir if you have any specific material related to K-type thermocouple and NTC, kindly forward me.

Thanks and best regards.