Yes. They require the typical considerations of a precision environment. In comparison to inductive sensors, which also use electric fields to measure distance, capacitive sensors typically offer more accuracy. However, unlike inductive they are best used in clean environments as the material in the gap between the sensor and the target, such as oil or moisture due to humidity, will change the dielectric and thus the capacitance based measurement. Our capacitive sensor systems are compensated to minimize drift due to temperature and have a standard operating range of +4 to +50oC. In this temperature range, errors are less than 0.5% of full scale. A more troublesome problem is that virtually all materials used in targets and fixtures exhibit a significant expansion and contraction over this temperature range. When this happens, the temperature related changes in the measurement are not sensor errors. They are real changes in the gap between the target and the probe. Careful fixture design goes a long way toward minimizing this error and maximizing accuracy. On request, sensors can be made for operation up to 150oC or at cryogenic temperatures.