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