ABB’s Measurement & Analytics business has announced the LST300 ultrasonic level transmitter, an intelligent, compact level instrument with application in a wide range of industries and applications. LST300 represents a breakthrough in level measurement. Today’s plants demand low power, easy to use instruments that deliver great performance even in difficult conditions. Intelligent compact transmitters have always been attractive, but certain limitations previously prevented their use in many applications.
A powerful low power device
The LST300 removes the need for compromise on accuracy, power consumption, ingress protection, chemical resistance, HMI capabilities or measurement range. It offers all of the benefits of remote devices in a compact instrument. Whether used in municipal water applications or industrial processes, the instrument delivers enhanced reliability and performance, reducing the cost of ownership and delivering operational benefits.
It is a powerful low power device and the advanced electronic technology allows users to perform measurements and add features that required 4-wire power in the past. The new LST300 measures up to 10 m range, and while powering a graphic HMI it still manages to function using only loop power without any special requirements.
Automatically adapts to process conditions with full diagnostics
The LST300 builds on the already powerful GAP technology of the LST400. It constantly monitors measurement data, optimising the system for the best signal to noise ratio at any tank size. This function ensures the instrument always runs at its highest accuracy.
The LST300 is easy to install in both small areas like stilling wells, and large tanks in difficult conditions. It is the first to have full graphic capability and allows users to visualise the process on the instrument, while other compact instruments have simple character display systems only.
Survives harsh chemical environments and flooding
Metal at the top and PVDF at the bottom, LST300 can be installed in the rough, corrosive conditions where remote sensor instruments are typically used. Many other compact ultrasonic instruments provide corrosion resistance only on the sensor, which requires the user to separate the transmitter from the corrosive environment. The IP66/67 rated LST300 has no problem surviving tough outdoor conditions and can be fully submerged during flood conditions. Many other devices only provide high IP ratings on the sensor (wetted parts), while their main electronics have only IP65 protection. However, LST300 is an integrated, yet fully protected device and its IP rating applies to the whole of the instrument.
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