Fiber-optic liquid level sensor based on coupling optical path length variation.
The concept for a new and simple fiber-optic liquid level sensor is presented and experimental results are shown to demonstrate the principle. The sensing principle is based on light intensity modulation when rising and falling mode of liquid level causes coupling optical path distance variation between two optical fibers. Near continuous mode of liquid level variation could be monitored with resolution as low as 1 mm can be measured in the length scale of 25 cm.
Department of Physics, Tezpur University Napaam, Dist. Sonitpur 784028, Assam, India. pnath@tezu.ernet.in
Pabitra
P
Nath
Hidam Kumarjit
HK
Singh
Dhananjay
D
Tiwari
Tenisen
T
Basumatry