Thursday, January 21, 2010

Accelerometers Offer Resolution Down To 0.05mg

Sherborne Sensors has launched the A200 Series of high-precision, gravity-referenced linear servo accelerometers, offering measurement resolution down to 0.05mg. The accelerometers are available in ranges from +/-1 to +/-20g and are designed to reliably operate over a temperature range of -55 to 95C (-67 to 203F).

The design of the A200 series incorporates a closed-loop balance-torque mechanism, allowing sensors to reliably measure vector acceleration and operating as a complete servo-measurement system. By adjusting servo-amplifier parameters and related electronic networks, operating characteristics of the A200 series can be optimised to suit particular application requirements. A200 series units are available with connector or solder-pins versions as standard, with the option for custom units that may be manufactured and tested to meet specific military-conformance standards.

Flight-qualified versions are also available. Incorporating the same torque mechanism and servo electronics, certain models within the A200 series (A260) also feature a switching regulator to enable direct operation from a single-ended DC power supply. Galvanic isolation between primary and secondary circuits provides total electrical isolation between input supply and signal output.

To meet certain measurement requirements, such as those found in aerospace applications, specific units feature an optional low-pass filter and 1g bias circuitry for vertical mounting the A200 series may be used in applications including flight-test monitoring, accident-data collection, structural health monitoring, flight simulators, mass-transit system braking control, road-bed analysis, data-acquisition systems and low-frequency analysis. Recommended accessories for the A200 series include power supplies, mating connectors and panel indicators, all available from Sherborne Sensors.

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