Gas dilatation thermometers are spherical thermometers that measure temperature through dilatation of internal gas depending on temperature. This expansion is transmitted to a rotating needle in a graduated sphere.
The thermometers are constructed with a graduated sphere where one can see the position of the needle showing the temperature, a bulb in which inside a gas is moving and a final bottle where the dilatation of the most important part of the gas content is performed.
Between the case and the end of the bulb may be a rigid immersor or a flexible capilar. This allows the remote transmission even over long distances and also the location of the thermometer in panel.
The gas dilatation thermometers also accept various accessories and options:
The accuracy of the system goes between a 1 and a 2%. The constrictive characteristics offered by SENSOTEC instruments in the range of thermometers is the following:
-Sphere diameter. We offer diameters between the 63 mm and 250 m.
-Bulb diameter and length. Diameter from 4 mm to 9,5 mm and length up to 1000 mm.
-Capilar flexible. We have different types of capilares (naked, with inox. Protection, with PVC protection) and length up to 20 m.
-Connection. Thread connection between 1/4” and 1” GAS NPT or metric thread.
-Thermometer shape. We have different types of inmersor output. Vertical output, for the lower part of the bulb, rear output centred, salida posterior acodada or rear articulated output where the angle can vary. For devices with capilar is possible further support for fixing on wall or a front mount bracket panel.
-Measurement temperature. The bimetallic system enables measurement between -260 and 800ºC.
-Options. Among the most interesting options we highlight the electrical contacts, relleno de liquid amortiguador