54 Special Applications Liquid-level Detection • Fiber Units for detecting liquid levels are available in two types: for tube mounting and liquid contact. Tube-mounting Types Detect the liquid level inside transparent tubes. Strap the Fiber Unit to a tube with band. Liquid-contact Type Detect the liquid level by direct contact with the liquid. Reflective= This model has excellent chemical-resistance Light incident Air because the Fiber Unit is covered in fluororesin. Liquid Radiation Specifications Bending Optical axis 55 Page Detection Tube Features Appearance (mm) radius Applicable range diameter Models Dimensions scheme diameter of cable (minimum No.
sensing object) 19.9 3.2, 6.4 • Resistant to bubbles Bend- Applicable tube: Transparent and and droplets 27 resistant, tube with a diameter of 3.2, 6.4, - E32-A01 5M 55-A • Residual quantity or 9.5 dia. and a recommended 9.5 dia. detection R4 wall thickness of 1 mm IP50 18 Applicable tube: Transparent T mu ob ue n- ting 108 dto ia. I md ue la til l efo vr e m lsounting at 10 R10 t du iab .e a w ndith a a r ed cia om me mte er n o df e 8 d t wo a 1 ll0 - E32-L25T 2M 55-B 16 thickness of 1 mm IP50 5 • Usable on large restN rico ti ons • d Ri ea sm ise tt ae nr t t tu ob be us bbles 23.45 R4 A t (u np b op e rl i ec sa tb ril ce t it ou nb se :
o T nr a dn ias mpa er te en r)t - E32-D36T 2M 55-C and droplets 15 IP67 Liquid contact R40 (heat-resistant --- --- 6 dia. R25 Liquid-contact Type *1 - E32-D82F1 4M 55-D up to 200°C) *3 IP68 *1 If you want to change the amount of received light, please Refer to the Instruction Sheet of the Fiber Amplifier used. *2 The applicable range is the same whether an E3X-ZV series or E3NX-FA series is used. This does not include E3NX-FAH@ infrared models varies. When using a Fiber Amplifier Unit in giga-power mode, level detection may not work depending on the tube diameter. Make sure to confirm operation with the actual tube.
*3 The bending radius of the sensing section (except for the unbendable section) is 40 mm, and the bending radius of the fiber is 25 mm. - Reference Information for Model Selection - Determining the Best Model for Tube-mounted Types Mounting and conditions Recommended Unit Features This is a Through-beam Model, so the incident light will differ greatly between with and without of liquid. It also uses an area beam, which is less prone to false detection by bubbles and droplets.
With liquid Without liquid When bubbles and the water E32-A01 droplets are generated Light interrupted Light incident Multilevel installation in limited space E32-L25T This model is suitable for mounting at multilevels because of the thin type (height: 10 mm). This model has no restrictions on the tube diameter, so it can be mounted on many different tube sizes. It also uses an area beam, which is less prone to false detection by bubbles and droplets.
With liquid Without liquid Tube Liquid Mounting on large diameter tubes E32-D36T Air Reflective= Radiation Light incident Fiber Sensor Features Selection Guide Fiber Units Standard Installation Threaded Hex-shaped Cylindrical Saving Space Flat Sleeved Beam Improvements Small Spot High Power Narrow view BGS Objects Retro- reflective Transparent Limited- reflective Retro- reflective Environmental Immunity Chemical- resistant, Oil-resistant Bending Heat- resistant Applications Area Detection Liquid-level Vacuum FPD, Semi, Solar Installation Information Fiber Amplifiers, Communications Unit, and Accessories Technical Guide and Precautions Model Index 54 Detection scheme Tube diameter Features Appearance (mm) Bending radius of cable Applicable range Optical axis diameter (minimum sensing objec Mod t) 55 Page els Dimensions No.
Tube- mounting 3.2, 6.4 and 9.5 dia. • Resistant to bubbles and droplets • Residual quantity detection 19.9 27 IP50 Bend- resistant, R4 Applicable tube: Transparent tube with a diameter of 3.2, 6.4, or 9.5 dia. and a recommended wall thickness of 1 mm - E32-A01 IP50 8 to 10 dia. Ideal for mounting at multilevels 18 10 16 IP50 R10 Applicable tube: Transparent tube with a diameter of 8 to 10 dia. and a recommended wall thickness of 1 mm - E32-L25 IP50 No restrictions • Usable on large diameter tubes • Resistant to bubbles and droplets 5 23.45 15 IP67 R4 Applicable tube: Transparent tube (no restrictions on diameter) - E32-D36 IP67 Liquid contact (heat-resistant up to 200°C) --- --- 6 dia.
IP68 R40 R25 *3 Liquid-contact Type *1 - E32-D82 IP68 Mounting and conditions Recommended Unit Features When bubbles and the water droplets are generated E32-A01 This is a Through-beam Model, so the incident light will differ greatly between with and without of liquid. It also uses an area beam, which is less prone to false detection by bubbles and droplets. With liquid Without liquid Light interrupted Light incident Multilevel installation in limited space E32-L25T This model is suitable for mounting at multilevels because of the thin type (height: 10 mm).
Mounting on large diameter tubes E32-D36T This model has no restrictions on the tube diameter, so it can be mounted on many different tube sizes. It also uses an area beam, which is less prone to false detection by bubbles and droplets. With liquid Without liquid Tube Liquid Air Reflective= Radiation Light incident