Models SA-107LN, SA-207LN, and SA-307LN servo accelerometers from Columbia Research Laboratories, field tested in hundreds of buildings in Europe, are ideal for structural health monitoring in a variety of situations. These high sensitivity, ultra low noise sensors are designed for use in seismic, and low level, low frequency motion studies. The SA-107LN is a single axis unit and the SA-207LN and SA-307LN are two and three axis units. On all units, low noise electronics used in conjunction with the force balance principle make possible measurements in the low frequency micro-G range. Aside from the traditional DSC-coupled zero output, these accelerometers provide AC-coupled zero output which eliminates tilt induced or offset errors facilitating high amplification of the basic output. The accelerometers are self contained and provide high level, low impedance output. No signal conditioning is required in most applications. These units are powered by + 12 to + 15 VDC and are available in a choice of package styles. SA-107LN, SA-207LN, and SA-307LN accelerometers perform extremely well in applications such as floor vibration, building motion, seismic detection, antenna stabilization, and earthquake monitoring.
Columbia Research Laboratories