New accelerometers rumble low frequency vibrations

21st February 2011

Aptifirst

ES Admin

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The CTA306 series of rugged triaxial accelerometers, available from Aptifirst, are especially designed to mechanically filter out vibrations at frequencies over 20Hz, so that low frequency vibrations may be measured accurately in vibrationally noisy environments. Ranges available are ±2g to ±30g, the different axes can be fitted with different ranges if required, and they have an amazing over-range capacity of 20,000g. They allow true inertial measurements on vehicles, and have many other applications in sports dynamics, aerospace, defence, civil engineering, theme parks, marine, offshore, rail and road transport, as well as R&D, materials processing and other manufacturing industries.

The CTA306 is housed in a robust IP65 aluminium housing measuring 35 x 35 x 16mm, and is based around MEMS precision micro-machined silicon capacitative devices. They have an integral amplifier with a choice of 5V or 8 - 16V DC supply voltages, and provides an output of 0.5 to 4.5V, with a 2.5V offset (ie ±2V with the 2.5V point representing zero). The operating temperature range is -20 to +100°C, with the compensated range being +20 to +100°C. Linearity is ±1% of full scale output. As standard, the CTA306 is supplied with a 1 metre screened flying lead, although other lengths or a subminiature mil-spec chassis plug connector are available to order.

Said Aptifirst's Roy Carter, The CTA306 series of low bandwidth accelerometers provides an easy way to detect low frequency vibrations in many applications. We are always happy to consider making modified versions for special applications. They are a welcome addition to our successful range of accelerometers.