The difference between an LSOC and an LSI servo inclinometer is only the housing in which the measurement elements are contained. The LSI is lightweight housing while the LSOC is based on a solid metal enclosure.
Force-balanced (servo) precision inclinometers/accelerometers are extremely sensitive, rugged transducers with virtual infinite resolution. The sensor output is a Voltage or Current signal which is not requesting any further conditioning.
The output of a force-balanced (servo) sensor is a sine-based voltage signal. Depending on the connected device (digital display, data acquisition system, control loop) the voltage signal is scaled to the calibrated range.
A force-balanced (servo) sensor is not ageing and the calibration is usually not changing over time. Sherborne, like most sensor manufacturers, is not suggesting re-calibration periods in their product performance specifications. Higher-accuracy measurements require more frequent calibration, ranging from once every six months to once every year. The best way to determine the optimum time between calibrations is from the calibration history of the initial period of life of the sensor in its application. As a guide, where average industrial accuracy is required, no sensor should be used for more than a year without a calibration check. The absolute limit is three years.