Product Introduction
Our liquid level fiber optic sensor FD FT series includes FD-F41, FD-F4, FD-FA93, FT-F93, FD-F71 and FD-F88 models, categorized into contact liquid detection, pipeline mounting and leakage detection types. These fiber sensors support liquid upper limit and lower limit monitoring, compatible with transparent tubes and various chemical liquid working conditions, matched with FX-500 and FX-101/102 fiber amplifiers.
Key Benefits
▶Dual detection logic: Upper liquid level detection triggers light input without liquid; lower liquid level detection triggers light input with liquid.
▶Multiple structural options: Standard type, PFA thick-wall tube type, transmissive type, bend-resistant wet-proof structure.
▶Wide temperature resistance: Partial models withstand 105℃ high temperature with alumina coating protection.
Technical Specifications
liquid level fiber optic sensor FD FT series
FD-F8Y
Front end shape: Φ6
Heat resistance: 125℃, fluoride resin coating
Protective tube: Fluoride resin, 1000mm, non-cuttable
Minimum bending radius: R40mm (tip section)
Detection logic: Light ON without liquid; Light OFF with liquid
Standard sensing distance: 120mm
Compatible amplifier: FX-500, FX-101, FX-102
Application: Tank liquid level monitoring
FD-HF40Y
Front end shape: Φ4 straight probe
Heat resistance: 105℃, fluoride resin coating
Protective tube: Fluoride resin, 500mm cuttable
Minimum bending radius: R30mm
Detection logic: Light ON without liquid; Light OFF with liquid
Standard sensing distance: 90mm
Accessories: Anti-liquid & extension mounting adapters
Application: Chemical liquid level detection
FD-F41Y
Front end shape: Φ4 straight probe
Heat resistance: 70℃, tip-only fluoride coating
Protective tube: Fluoride resin, 500mm cuttable
Minimum bending radius: R25mm
Detection logic: Light ON without liquid; Light OFF with liquid
Standard sensing distance: 80mm
Accessories: Dedicated fiber mounting connectors
Application: Low-temperature liquid detection
FD-F71
Overall dimension: W20 × H30 × D10mm
Feature: High flexibility, bending resistant, SEMI S2 compliant
Heat resistance: 80℃
Installation method: Snap-on pipeline mount
Detection logic: Light ON no leakage; Light OFF with leakage
Standard sensing distance: 100mm
Compatible amplifier: FX-500 series
Application: Semiconductor pipeline leak detection
Applications & Components
Semiconductor equipment liquid leakage detection
Monitoring chemical liquid leakage at wet process stations.
Tank and water tank liquid level management
Real-time monitoring of liquid height inside storage containers.
Complete real-time liquid monitoring functions
Overflow alarm, liquid shortage alarm and fiber breakage fault alarm for chemical pipelines.
Full set of supporting matching parts
Special binding straps, liquid-proof penetration connectors and extended fiber cables.
Why Choose This Machine
The liquid level fiber optic sensor FD FT series provides differentiated detection schemes for different liquid monitoring demands. It is not easily affected by air bubbles, supports cutting of fiber protective sleeves, and can be installed externally on transparent pipelines without direct contact with corrosive liquid to extend service life. Multiple bend-resistant and wet-proof structures adapt to harsh chemical and semiconductor workshop environments.
Part of Your Smart Factory
Integrate liquid level fiber optic sensor FD FT series with fiber amplifiers to build automatic liquid status monitoring system for smart factories. It feeds liquid shortage, overflow and leakage signals to PLC control system, realizing unattended automatic alarm for chemical liquid pipelines, storage tanks and semiconductor production equipment.
FAQ
Q: Can the sensor work with corrosive chemical liquid?
A: Yes, the external pipeline mounting design avoids direct liquid contact, PFA coating supports various chemical fluids.
Q: What is the difference between FD and FT models?
A: FD series detects liquid presence when light is blocked; FT-F93 transmissive type receives light when liquid exists for lower limit detection.
Q: Is the fiber cable customizable in length?
A: FD-HF40Y and FD-F41Y sleeves can be cut on-site to adjust fiber length.
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