In order to fulfill the need for economical displacement transmitters with simplified installation, Brüel & Kjær Vibro (B&K Vibro) announces the release of the 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 directly be connected to a DCS or PLC using it’s 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 displacements transmitters are also very 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.” says 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.

The DT-12x series of displacement transmitters are available in three different mounting configurations, as described on the B&K Vibro website (

About Brüel & Kjær Vibro
Brüel & Kjær Vibro is the leading worldwide independent supplier of condition monitoring solutions for rotating machinery. The comprehensive product range comprises vibration sensors (acceleration, velocity and displacement), vibration monitors, handhelds and rack-based plant-wide integrated monitoring solutions. These products plus a suite of comprehensive services fulfil the most demanding applications for safety, condition and performance monitoring of rotating machinery.

Based on 60 years of experience and a world-wide sales and support network, Brüel & Kjær Vibro’s monitoring solutions have successfully reduced downtime and maintenance costs and increased machine reliability for our customers world-wide. 

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About Spectris
Brüel & Kjær Vibro is part of Spectris plc, a leading supplier of productivity-enhancing instrumentation and controls. Headquartered in Egham, Surrey, United Kingdom, Spectris is listed on the London Stock Exchange (LSE: SXS) and had sales of £1,604 million in 2018. The company employs around 10,000 people located in more than 30 countries.

The company’s products, technologies and services help customers to improve product quality and performance, improve core manufacturing processes, reduce downtime and wastage and reduce time to market. Its global customer base spans a diverse range of end-user markets.

Spectris operates across four business segments which reflect the applications and industries it serves: Materials Analysis, Test and Measurement, In-line Instrumentation and Industrial Controls.  

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