Name: ?6.35 PFA chemical-resistant contact liquid level fiber optic unit
Brand: TAKEX Takenaka Engineering Co., Ltd.
SKU: TAKEX_FL-6BC

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TAKEX_FL-6BC

φ6.35 PFA chemical-resistant contact liquid level fiber optic unit

TAKEX FL-6BC is a φ6.35 PFA-covered fiber optic unit for liquid level detection in water, oil, and chemicals.
Its refractive sensing method provides 1 mm or less repeatability with water, −0.1 to +0.5 MPa pressure resistance, and a 2.5 m fiber.

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Features
Specification
FAQ

Features

PFA chemical-resistant construction: The fiber covering uses PFA fluoropolymer for liquid level detection in water, oil, and a wide range of chemical liquids.
Contact liquid level detection: The sensing tip detects liquid contact through the optical change caused by the difference in refractive index between air and liquid.
φ6.35 cylindrical sensing tip: The cylindrical φ6.35 sensing tip can be positioned at the required liquid level in tanks and process equipment.
1 mm or less repeatability: Repeatability is 1 mm or less when detecting water, supporting stable liquid level position detection.
Pressure and temperature capability: The unit supports −0.1 to +0.5 MPa pressure resistance and an ambient temperature range of −40 to +70°C.

Specification

Item	Spec.
Model	FL-6BC
Product type	PFA chemical-resistant liquid level fiber optic unit
Detection method	Refractive
Detecting object	Liquid
Applicable liquids	Water, oil, chemicals, etc.
Liquid detection	Detection upon liquid contact
Tip appearance	Cylindrical
Tip size	Φ6.35
Features	PFA tube, liquid level detection, chemical resistance
Repeatability	1 mm or less with water
Pressure resistance	−0.1 to +0.5 MPa
Ambient temperature	−40 to +70°C, no condensation inside PFA tube
Fiber optic cable length	2.5 m
Allowable bending radius	R40 mm
Non-bending area	First 50 mm from sensing tip
Fiber covering material	PFA fluoropolymer
Fiber material	Plastic
Weight	80 g or less
Applicable amplifiers	F70, F70AR, F80R, F85RN

Specification notes

Liquid conditions: Colored and colorless transparent liquids can be detected. Sample testing is recommended for liquids with high viscosity or turbidity.
Fiber bending limit: The allowable bending radius is R40 mm, while the first 50 mm from the sensing tip must remain straight.
Operating conditions: Condensation inside the PFA fluoropolymer tube must be avoided, and suitability should be confirmed for the actual liquid, pressure, and environment.

FAQ

Q1: What is TAKEX FL-6BC?
A: FL-6BC is a φ6.35 PFA-covered chemical-resistant fiber optic unit that uses refractive sensing for liquid level detection.

Q2: What liquids can FL-6BC detect?
A: It can detect water, oil, and a wide range of chemical liquids, including colored and colorless transparent liquids. Sample testing is recommended for highly viscous or turbid liquids.

Q3: How does FL-6BC detect liquid level?
A: It detects the optical change caused by the difference in refractive index between air and liquid when the sensing tip contacts the liquid.

Q4: What is the sensing tip size of FL-6BC?
A: FL-6BC uses a φ6.35 cylindrical sensing tip.

Q5: What is the repeatability of FL-6BC?
A: Repeatability is 1 mm or less when detecting water.

Q6: What is the pressure resistance of FL-6BC?
A: The pressure resistance range is −0.1 to +0.5 MPa.

Q7: What is the ambient temperature range of FL-6BC?
A: The ambient temperature range is −40 to +70°C, provided condensation does not occur inside the PFA tube.

Q8: What are the fiber length and bending requirements of FL-6BC?
A: The fiber length is 2.5 m, with an allowable bending radius of R40 mm. The first 50 mm from the sensing tip must not be bent.

Q9: Does FL-6BC provide NPN or PNP output?
A: No. FL-6BC is a fiber optic sensing unit and requires a compatible TAKEX fiber amplifier for electrical output.

Q10: What applications are suitable for FL-6BC?
A: It is suited to liquid level and liquid presence detection in tanks, analyzers, liquid supply equipment, and process systems requiring chemical-resistant PFA construction.

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