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The sensor must be positioned as “close to the action” as possible, and this can only be achieved with the right process connection. The electrical outputs of the interfaces for the operator in the field and to higher-level systems must be flexible, and operation must be kept as simple as possible.
Pressures and temperatures are essential parameters for the operation of a large number machines and plants. Whilst the measured values in process automation are normally transferred to the controller as analog signals, in machine building, it is often required for overshoot values to be indicated as well. For example, the clamping pressure on machine tools must be monitored in order to ensure that the workpiece is seated correctly. Temperature sensors are frequently used for monitoring cooling and hydraulic fluid circuits.
Requirements of fluid sensors
The wide range of possible installation options in different applications requires the process connections of these devices to be highly flexible. Installation has to be simple, fast and if possible without the need for any additional mounting adapters. In this case, variable devices are ideal since they can be read from the front and from above according to the installation position in the machine.
When visibility is often difficult, it is important to have a display that enables measured values and displayed information to be read, even from several metres. State-of-the-art sensors come with a number of additional functions for optimum adaption to the application at hand.
These requirements call for the development of simple and intuitive operation, if possible without tools, so that there is no possibility of operating errors occurring despite the large number of parameters involved. All these requirements are met by Turck's new PS400/PS500 pressure sensors and TS400/TS500 temperature sensors...
The author
Klaus Ebinger
product manager for process sensors
Hans Turck GmbH & Co. KG, Mülheim/Ruhr
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