Float Type Liquid Level Sensor
Fiber-optic liquid level sensor using a float with a built-in magnet, designed for outdoor use such as rivers.
Technical overview
A Faraday-series point level sensor read over the same single-core single-mode fiber network as the other sensors in the series. A magnet inside the float actuates the optical element as the level reaches the set point. Shinkosha states the float structure was examined for outdoor service such as rivers, but publishes no dimensions, level accuracy, pressure rating or materials.
Features
- Sensor uses no electricity and needs no data transmitter
- Scattered sensors are read collectively in near real time, once every 5 seconds
- Usable in adverse environments such as mountains, coasts and sewers
- Already deployed in electricity, harbour and river management applications
- Interrogated with off-the-shelf OTDR units rather than a proprietary detector
- Float with a built-in magnet
- Float structure designed for outdoor use such as rivers
Specifications
| Parameter | Value |
|---|---|
| Fiber type (Faraday sensor series) | Single core, single mode |
| System measurement interval (OTDR system) | Once every 5 seconds |
Applications
- Monitoring warning and dangerous water levels in rivers
- Wide-area flood monitoring in underground malls and subways
- Completion and verification of flood hazard maps
- Road flood detection
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