Gas expansion thermometer GU 250

dial

The measuring principle is based on the volumetric temperature expansion of the gas filling in the measuring element. The measuring element is firmly connected by a capillary tube with a measuring spring. The spring transfers the expansion of the gas filling by a movement on a dial. Application purposes Gas-filled dial thermometers are used for temperatures from -80°C up to +800°C. Accuracy is ± 1% of full scale deflection. Gas-filled dial thermometers can be supplied with a capillary line between measuring element and spring of up to 100m length.