Resistance thermometers TW85 are aplied as intrinsically safe equipment to measure temerature in fluids and gases as well as dusts. These thermometers consist of a protective sleeve with varios process connections, a terminal head and - depending on the model - an exchancheable gauge slide. All components in touch with process media are leake tested. Pt 100 temperature sensors acc. to DIN EN 60 751 in tolerance classes gA or B in 2, 3 or 4-wire circuit are used inside the protective sleeve. Models with

2 measuring circuits are possible. To transfer measurement as standard signal (e.g. 4...20mA) a transmitter can be integrated into the terminal head.