Sensor Linearity
Linear capacitance control allows a transducer to maintain a constant output ratio across a full range of physical displacement. The lcc-20 maintains this precision by regulating the charge injection at the bridge completion stage of the circuit. This mechanism compensates for the inherent non-linear response of parallel plate capacitors when the gap width exceeds a set tolerance.
Calibration occurs against a laser interferometer to establish the zero offset point and the span slope. Environmental temperature shifts induce an expansion of the electrode material that shifts the effective gap, and the circuit adjusts the excitation frequency to maintain the specified output stability.
Bridge Compensation
The electronic circuit employs a ratiometric feedback loop to isolate the measurement from fluctuations in the supply voltage. By comparing the lcc-20 reference capacitor against the variable sensing element, the system generates a signal proportional to the physical separation. Any impedance mismatch between the two capacitors introduces a drift that exceeds the defined performance envelope.
Thermal coefficients of the internal oscillators define the secondary limit of the measurement accuracy, as the oscillation period serves as the baseline for the conversion timing.
Installation Constraint
Mounting requires a rigid alignment to ensure the parallel surfaces stay within the plane of the reference frame throughout the entire movement stroke. A tilt error exceeding the mechanical clearance of the lcc-20 creates a fringe field effect that degrades the signal resolution. Mounting surfaces must meet a flatness grade that prevents structural deformation under thermal stress or vibration.
Proximity to high frequency electromagnetic fields induces parasitic capacitance that manifests as noise within the signal processing chain.
Signal Precision
Output integrity relies on the signal-to-noise ratio maintained during the high-speed conversion process. The lcc-20 produces a raw voltage output that remains stable under rapid sampling rates. Electronic noise floor limitations determine the minimum resolvable increment of the system.
Signal output depends on the stability of the input excitation current. The system operates with a linearity error lower than the manufacturing tolerance of the sensing element.
