Why should a thermocouple be in counterflow contact with the fluid during installation?
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As the title suggests, why is counter-current contact necessary?
For better temperature measurement, it’s usually fine to install it vertically
Yes, the documentation states vertical or counterflow direction, but it’s not clear why this approach yields better temperature measurement – what is the principle behind it?
More thorough counter-current contact with the fluid...
When you stand in the breeze to cool off, are you facing the wind or with your back to it?
It sounds like it makes quite some sense
Flowing with the current will carry away some heat, resulting in lower measurements; this problem does not occur when flowing against the current
To achieve better temperature measurement, they are generally installed vertically in practice, with the aim of having the actual temperature-sensing point of the thermocouple in direct contact with the material.
Counterflow installation can take advantage of the flushing effect of fluids to prevent fouling or sedimentation at sensitive areas.