Gelatin Used as a Transductor in an Optical Hygrometer Based on a Fabry-Perot Interferometer

Table 1

Characteristics of some hygrometers.

	HC2A-S	MEMS SENSOR	Chipcap2
Operating range	0–100%	50%–90%	0–100%
Accuracy	±0.8%	Sensitivity 0.065 Pf/RH%	±3%
Manufacturer	PST processing sensing technologies [30]	[31]	Amphenol [32]. Based on MEMS technology.