Accelerometers

The new Modular Shear family of accelerometers for industrial applications uses a common generic sensing element, or module, which can be packaged in a variety of housings to suit different applications and environments. The sensing element is a balanced shear design, assembled to very close tolerances, permitting repeatable manufacturing in large quantities. Shear mode transducers have a large immunity from spurious outputs caused by cross-axis vibration, temperature transients and acoustic interference.

To help ensure great signal quality in the electrically noisy environments of factories, power plants and process industries, the range employs special techniques of signal transmission. For medium-temperature use, where integral electronics can be used, current transmission is employed. The integral electronics inside the accelerometer convert charge to a differential current signal, which can be transmitted over very long distances up to a km or more without degradation. For high and low temperature applications, where integral electronics is not an option, the accelerometers have a differential charge output, which minimizes noise pick-up. The charge signal is then converted by a local conditioner module into a differential current signal.

Vibro-Meter, A Meggitt Company, Rte. De Moncor 4, PO Box 10741 CH-1701 Fribourg, Switzerland. Tel: +41 26 407 15 21; Fax: +41 26 407 13 01