SENSorS & iNStrumENtatioN 2018 SupplEmENt uExhibitor preview revolutionising the way you measure highly dynamiC pressure Curves


Recording high-frequency pressure curves previously meant a choice between a very expensive high-end laboratory instrument or an expensive but drift- prone special transmitter. The new Trafag NAH 8254 20kHz pressure transmitter takes a new path: based on the proven, extremely robust mobile hydraulic transmitter, the innovative combination of thin-film-on-steel sensor and self-developed ASIC formed the perfect transmitter for highly dynamic pressure measurements. In many applications, particularly the test environment, highly dynamic pressure profiles are measured to optimise systems and machines. For example, unfavourable closing behaviour of valves can produce short but very high-pressure peaks in pipes, causing considerable damage. There is also a need to analyse explosive events. For most transmitters such high-frequency signals are usually undetectable. Trafag has developed their high-speed pressure transmitter by smartly combining its own thin-film-on-steel sensor element with the proprietary Trafag ASIC TX. Highly dynamic pressure profiles are


often measured with piezoelectric or piezoresistive sensors. Piezoelectric sensors are very expensive and difficult to manufacture, while the piezoresistive sensors are susceptible to drift at elevated temperatures. The thin-film-on- steel sensor technology used by Trafag is significantly more resistant to signal drift, even under the harshest conditions. Trafag combines this sensor technology with the dedicated, proprietary ASIC TX (Application Specific Integrated Circuit), enabling thin-film on steel sensors, with their robustness and long- term stability benefits, to be used where


competitive solutions reach their limits. Based on the proven


miniature industrial transmitter NAH 8254 with wrench size 19, Trafag offers versions with a cut- off frequency up to 20 kHz. The thin-film sensor element and the basic structure of the transmitter have proven themselves under extreme conditions in harsh environments, such as mobile hydraulics applications, and guarantee a reliability that is second to none. The key to using thin-film-on-steel sensors for highly dynamic measurements lies in the special design concept of the Trafag ASIC TX, which combines several hundred thousand transistors on a surface area of only 2mm x 2mm and consists of a powerful analogue amplifier and a matching digital part.


Trafag Stand E3 www.trafag.co.uk T: 0203 968 0020


CompaCt data aCquisition


The new DEWESoft R4 Data Acquisition System provides a compact measurement solution for high channel count data recording requirements where space is limited. Built around DEWESoft’s SIRIUS DAQ technology, the R4 DAQ


system combines high performance ADC Technology and world leading signal conditioning in a compact and rugged chassis, with an integrated high performance CPU and solid state storage. The R4 DAQ chassis accommodates up to four SIRIUS DAQ slices


featuring DualCoreADC analogue inputs with up to 160dB dynamic range and acquisition speeds of up to 200kHz per channel or optional high-speed amplifiers with speeds up to 1MHz per channel. Supporting up to 64 analogue inputs with signal conditioning options for any type of sensor or signal input as well as inputs for digital signals or counter/encoder inputs and up to four CAN Bus inputs. The R4 DAQ system can also be equipped with a 10Hz or 100Hz GPS receiver with Real-Time Kinematic (RTK) support for precise (down to 1cm) position based test and measurement applications. The R4 DAQ


system includes an EtherCAT master port enabling expansion of the system with distributable SIRIUS and/or KRYPTON EtherCAT modules via a single cable carrying power,


synchronisation and data between


the EtherCAT modules and the R4 DAQ system. R4 DAQ systems


can also be expanded by combining multiple R4 DAQ systems or other DEWESoft DAQ instruments for synchronised high channel count measurement applications, even when systems are located remotely with wireless communication between systems and synchronisation via GPS timing. In addition to analogue and digital inputs, the R4 DAQ system


can also incorporate up to 32 analogue outputs for Signal generation or replay of analogue data for control or simulation applications. For added Real-Time Control capability, the R4 system can be equipped


with an additional real-time EtherCAT bus to feed data to any third party EtherCAT master controller simultaneously with data recording. All DEWESoft Data Acqusition Systems are bundled with DEWESoft


X Professional, the world’s most advanced and easy-to-use data acquisition and analysis software to elevate your measurement and analysis skills to a whole new level.


DEWESoft UK Stand B2 dewesoft.com T: 01234 381 261


S20


September 2018 Instrumentation Monthly


The NAH 8254 combines the robust


design of a mobile hydraulic transmitter with refined,


extraordinarily fast electronics


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