A pressure gauge should be able to indicate the pressure that allows people to identify potential safety threats such as highly dangerous pressures, along with

system failures due to low pressure, among other applications or uses.

There are processes who requires a high temperature which can damage the instruments that are directly assembled to the process, which are generating maintenance costs, spare parts, services, among others.

How does it transfer heat?

  • Conduction
  • Convection
  • Radiation

How impacts heat transfer?


Heat transfer occurs at its high level in metals which become thermal conductors. The stainless-steel pressure gauge housing is better heat conducter than a thermostable (phenolic) or thermoplastic housing. In addition, gases and liquids are also heat-driven, for example: fluid filled systems in pressure gauges with diaphragm seal.

Surface area

Heat dissipates more in long areas than small ones, for example: 700 diaphragm model seal dissipates more heat than the 310 mini seal model.


There is better heat dissipation when the heat has to travel a greater distance, for example: a “pig” siphon mounted between the gauge and the process pipe will dissipate more heat than a pressure gauge mounted directly to the process pipe.

Pressure gauges accessories for high temperatures process

  • Capillaries
  • Diaphragm seals (threaded, insulation, flanged, low pressure, in-line, welded or sanitary)
  • Siphons (pigtail or cooling tower)


To avoid any failure to your pressure gauge, please review the technical data sheet prior to installation. When your pressure gauge is working in high temperatures and you know that they exceed the allowed limit, do not wait to take

immediate action, contact us!