Gas pressure thermometers

The main features of gas thermometers are the wide range of measurement possible (-260°C to 800°C), their extreme resistance to vibration and the possibility of taking measurements from a distance (remote reading).

These thermometers work on the principle that pressure varies as a function of temperature, according to the gas law. The measuring system of gas thermometers consists of a capillary tube and a tubular coil. A temperature variation acting on the sensor proportionately alters the pressure of the gas contained within it. The expansion of the gas unwinds the coil. The angle of displacement of the coil is transmitted by means of an amplifying movement to a pointer, so enabling the temperature to be read.

Thanks to our long experience, we can offer a huge range of gas thermometers to meet the highest demands of different industrial applications.