Brüel & Kjær Vibro releases loop-powered transmitter

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The DT-12x series are fully integrated transmitters, which means the driver (oscillator) and signal conditioning electronics (vibration monitor) are built directly into the sensor. (Courtesy: Brüel & Kjær Vibro)
The DT-12x series are fully integrated transmitters, which means the driver (oscillator) and signal conditioning electronics (vibration monitor) are built directly into the sensor. (Courtesy: Brüel & Kjær Vibro)

In order to fulfill the need for economical displacement transmitters with simplified installation, Brüel & Kjær Vibro (B&K Vibro) recently announced its DT-12x series of transmitters. These fully integrated, loop-powered displacement transmitters offer a unique streamlined solution for shaft displacement and vibration monitoring capability for a wide range of industrial machines.

The DT-12x series are fully integrated transmitters, which means the driver (oscillator) and signal conditioning electronics (vibration monitor) are built directly into the sensor. This greatly simplifies installation by eliminating the need and space requirements for a driver, vibration monitor, and, eventually, a protective housing. Due to this innovative design, the transmitter can be connected directly to a DCS or PLC using its standardized 4-20 mA output. The transmitter is loop-powered, so its 4-20 mA signal is not affected by long wiring distances, voltage drops, or noise. This greatly simplifies installation even more when connecting to a DCS or PLC, since only two wires have to be connected in the current loop.

The DT-12x series displacement transmitters are also versatile from a monitoring perspective. In addition to the 4-20 mA outputs, there are also buffered output wires for transferring voltage signals to portable monitoring instruments for analysis and data storage. The transmitters are also built for harsh industrial environments.

“We made a strategic decision to reduce the number of components in the displacement transmitter measurement chain and reduce the overall installation and operational costs, but still maintain a high level of precision and quality,” said Florian Endres, sensor product manager at B&K Vibro. “DT-12x was the answer. I believe it was actually the world’s first such development, but it wasn’t such a technological hurdle. We have already gained considerable experience over the years with integrated sensor technology in our IN-08x series of displacement sensors.” .

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