Compact radar level transmitter from Siemens

SIEMENS Automation and Drives have launched the new Sitrans LR250 radar level transmitter, designed for the continuous monitoring of liquids and slurries in storage and process vessels.

The high-frequency Sitrans LR250 features a small horn antenna and a threaded connection allowing installation directly into an existing opening within a tank. One of the key benefits is that there is no longer a need to remove the lid for programming, as the transmitter can be configured using a non-intrusive infrared handheld programmer.

The two-wire, 25GHz pulse radar transmitter is designed for the continuous monitoring of liquids and slurries within storage and process vessels, including those of high temperature and pressure, up to a range of 20m (66ft).

Another key benefit of the product is that it is easy to install, featuring a narrow horn and beam, allowing its installation anywhere on a tank. The transmitter is also quick and easy to configure and can be operational within minutes after installation, while remaining highly reliable and accurate.

Derek Moore of Siemens Automation and Drives commented: ‘The Sitrans LR250 is not the first 24–26GHz radar on the market, but it does feature a number of performance advantages through its process intelligence echo processing. The transmitter is the closest the industry has come to the concept of a plug-and-play transmitter, as the two-wire device is the easiest to install and quickest to configure within the market place.’

Programming of the transmitter is simply achieved through the use of the multi-lingual quick-start wizard, which shows users how to programme the transmitter using minimal parameters. Programming is possible via a small hand-held programmer or remotely using the Simatic PDM, both of which can be performed without lifting the lid of the device, thereby reducing the risk of exposing the electronics to an aggressive atmosphere.

Process intelligence signal processing is also incorporated in the device to evaluate dynamic echo signals, and applies algorithms to raw echoes to produce accurate and reliable level measurement readings.

For any further product information or literature requests, contact Siemens Automation and Drives in tel: (0845) 7705070.