S. No. | Sensor | Moisture Measurement in Toxic Environment | Approx. Cost | Technology Used | Reference |
1. | Shaw | NM* | ~3000$ | Aluminium Oxide Capacitive sensor | 25 |
2. | GE | NM* | ~1000$ | Thin film Aluminium Oxide | 26 |
3. | Vaisala | Insensitive to dust & most chemical | ~861$ | Thin film polymer sensor | 27 |
4 | Tiger Optics | Measure moisture in toxic gases | ~60,000$ | Cavity Ring Down Spectroscopy | 28 |