Variohm Eurosensor - PRODUCT NEWS





Specialist ring terminal temperature probes: BONN Elektronik choose Variohm EuroSensor for high-power RF amplifier temperature monitoring

To maintain the optimal performance and reliability required for its high power amplifier stages, BONN Elektronik choose Variohm EuroSensor for the supply of custom modified temperature sensors that are an integral part of the amplifier´s performance monitoring.

Figure: Variohms´ ETP-RT ring terminal temperature sensor mounted on BONN Elektronik´s BLWA series high power amplifier module

BONN Elektronik GmbH, based in the southern German town of Holzkirchen, is a designer and manufacturer of RF power and microwave systems with a reputation for exceptional quality and reliability. The company produces standard and customised power amplifiers using solid state, TWT and pulsed amplifier technologies for communications applications that span low frequency subsea to broadband, GPS and satellite - with frequency ranges from the low kHz up to 50 GHz, and power ratings from a few Watts to over 30 kW.

Especially at very high power levels, maintaining amplifier temperature and heating levels is a critical part of the amplifier´s monitoring system - ensuring reliability and preventatively maintaining the long service life required for BONN Elektronik´s customer-oriented specifications. Convenient mounting for the probe is an important consideration and the Variohm ETP-RT ring terminal mounted temperature probe perfectly suits the open chassis design of these power stages. In addition the ring terminal design lends itself to straightforward adaptation for EMC shielding in the very direct vicinity of the potentially high levels of electromagnetic radiation from the power amplifier module.

Variohm adds EMC shielding to the temperature sensor and wiring by adding a coaxial screened cable which is extended circumferentially over and around the encapsulated sensor element and soldered to the actual ring terminal which is then bolted to the chassis´ earth, The complete assembly is then insulated and protected with heat-shrink sleeving.

The Variohm ETP series probes are part of a range available as ring terminal, hexagonal bolt, and PTFE, stainless steel or brass tube designs. They are all available as PTC and NTC versions with a wide selection of standard options for general industrial or scientific precision temperature measurement applications. They are designed for convenient mounting and precision temperature measurement performance in applications from HVAC to industrial or scientific processes. All the various ETP designs include IP67 sealed thermistors with improved encapsulation techniques for best thermal conductivity to ensure fast response times. Typical temperature range is -40 to +125 °C for the 10K3A1B version and -40 to +250 °C for the PT version. As illustrated by this application, they are also available as custom modified temperature probes with higher temperature ranges, modified mounting, connection options and electrical characteristics.


About Variohm EuroSensor
Variohm EuroSensor is a manufacturer, distributor and supply chain partner providing complete sales and application support across a comprehensive range of position, force, pressure, load, and temperature sensor technologies - for demanding measurement applications across industry, construction, agriculture, motorsports, research and more.


About Ixthus
Ixthus works closely with leading global suppliers of non-contact sensing technologies as well as force, torque and vibration sensor and transducer manufacturers, providing a complete service with its knowledgeable technical staff available to solve customers' measurement problems - from the first enquiry to complete after-sales support.
About Variohm Holdings
Comprising four closely linked operating divisions, staffed by highly experienced motion and sensor application specialists with extensive knowledge of international standards; Variohm Holdings combines its considerable design and manufacturing capability with best of brand products and components from leading global partners to provide engineered solutions that are seamlessly and cost effectively integrated for your application.

For more information, please contact:-

Variohm-Eurosensor Ltd.
Tel: +44(0) 1327 351004
Fax: +44(0) 1327 353564
Email:
graham@variohm.com
Web:
www.variohm.com

August 2017

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