TAKEX FL7314 FL7326 200°C PFA Liquid Level Sensors

• 200°C heat-resistant sensing: The fiber optic units operate in ambient temperatures up to 200°C for liquid level detection in high-temperature process environments.
• PFA chemical-resistant construction: The PFA fluoropolymer covering provides heat and chemical resistance for use with water, oil, and a wide range of chemical liquids.
• Refractive liquid level sensing: Liquid contact is detected through the optical change caused by the difference in refractive index between air and liquid.
• Two sensing tip sizes: FL7314 uses a φ6.35 cylindrical tip, while FL7326 uses a slimmer φ4 tip for installations with different space requirements.
• 1 mm or less repeatability: Repeatability is 1 mm or less with water, with −0.1 to +0.5 MPa pressure resistance for liquid level applications.

Q1: What are TAKEX FL7314 and FL7326?
A: FL7314 and FL7326 are 200°C PFA-covered heat- and chemical-resistant fiber optic units that use refractive sensing for liquid level detection.

Q2: What is the difference between FL7314 and FL7326?
A: The primary difference is the sensing tip size. FL7314 uses a φ6.35 tip, while FL7326 uses a slimmer φ4 tip. Both use 2.4 m fibers and PFA heat- and chemical-resistant construction.

Q3: What is the maximum operating temperature of FL7314 and FL7326?
A: Both models have an ambient temperature range of −40 to +200°C.

Q4: What liquids can FL7314 and FL7326 detect?
A: They 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.

Q5: How do FL7314 and FL7326 detect liquid level?
A: They use a refractive sensing method that detects the optical change caused by the difference in refractive index between air and liquid.

Q6: What is the repeatability of FL7314 and FL7326?
A: Repeatability is 1 mm or less when detecting water.

Q7: What is the pressure resistance of FL7314 and FL7326?
A: The pressure resistance range is −0.1 to +0.5 MPa.

Q8: What fiber material and length do FL7314 and FL7326 use?
A: Both models use glass fiber with a PFA fluoropolymer covering and a fiber length of 2.4 m. The allowable bending radius is R50 mm.

Q9: Do FL7314 and FL7326 provide NPN or PNP output?
A: No. They are fiber optic sensing units and require a compatible TAKEX fiber amplifier for electrical output.

Q10: What applications are suitable for FL7314 and FL7326?
A: They are suited to liquid level and liquid presence detection in high-temperature process equipment, tanks, and liquid handling systems requiring heat- and chemical-resistant construction.