Overview
AKUSENSE PD/PT Series Fiber Optic Sensor Cables are the sensing heads that connect to a fiber amplifier (PE1/PE2). Light travels from the amplifier through the fiber core to the sensing head, and the reflected or interrupted light returns to the amplifier for evaluation. Two sensing methods are offered: diffuse (PD) for reflective detection from a single head, and through-beam (PT) where emitter and receiver heads face each other. Mounting options include M3/M4/M6 threaded bodies and Ø1.5/Ø2/Ø3mm round tubes, in standard or coaxial fiber arrangement, with straight or right-angle heads. Most models are field-cuttable for custom length. SUS+PE jacket covers the fiber, with mounting nuts and washers included on threaded versions. Sample test and bulk procurement are supported.
Key Features
- Diffuse & Through-Beam — PD series (diffuse) for reflective sensing; PT series (through-beam) for emitter-receiver across a gap
- Multiple Mounting Sizes — M3 / M4 / M6 thread bodies and Ø1.5 / Ø2 / Ø3mm round tube heads
- Standard or Coaxial — standard arrangement (emitter + receiver side by side) or coaxial arrangement (single emitter, ring receiver) for narrow targets
- Straight & Right-Angle Heads — straight and 90° right-angle (TZ) versions for tight mounting spaces
- Long Convex Tube Options — 10 / 20 / 40 / 90mm extended nose for reaching deep into machines
- Field-Cuttable — most models can be cut to the required length on site
- SUS+PE Jacket — stainless steel head with PE cable jacket, flexible bending radius from 2mm to 25mm
- Amplifier Compatible — plugs directly into AKUSENSE PE1/PE2 series fiber amplifiers
Technical Specifications
| Parameter | Specification |
|---|---|
| Working Principle | Optical fiber (passive cable, requires fiber amplifier) |
| Sensing Method | Diffuse (PD series) / Through-beam (PT series) |
| Mounting Sizes | M3 / M4 / M6 thread; Ø1.5 / Ø2 / Ø3mm round tube; bare wire type |
| Fiber Core Diameter | Ø0.125 / Ø0.25 / Ø0.265 / Ø0.5 / Ø0.6 / Ø1.0 mm (by model) |
| Fiber Arrangement | Standard (1E+1R typical) / Coaxial (1E + multi-R ring) |
| Cable Length | 1000mm / 2000mm (by model) |
| Bending Radius | 2 ~ 25 mm (by model) |
| Field-Cuttable | Yes (most models) |
| Housing Material | Stainless steel (SUS) head + PE cable jacket |
| Head Styles | Bare wire / short convex / long convex (10/20/40/90mm) / right-angle (TZ) |
| Min. Detectable Object | Ø0.2mm ~ Ø0.5mm (through-beam models; diffuse depends on amplifier) |
| Accessories | Mounting nuts and washers (threaded models) |
Diffuse Fiber Optic Cables (PD Series) — Representative Models
| Group | Mounting | Core / Arrangement | Typical Models |
|---|---|---|---|
| Bare wire | Ø1.5mm tube, no metal head | Ø0.125~0.25mm, standard | PD-R49Y, PD-R46 |
| Ø2mm convex | Ø2.0mm tube, long convex 10/20/40/90mm | Ø0.25mm, standard | PD-E22-Q-I/S/M/L |
| Ø3mm convex | Ø3.0mm tube | Ø0.265 / 0.5mm, standard | PD-S32-Q, PD-G45Y |
| M3 standard | M3 thread, convex 1~90mm | Ø0.5mm / Ø0.25mm, standard | PD-32, PD-E32 and I/S/M/L variants |
| M4 standard | M4 thread, convex 1~90mm | Ø0.5mm, standard | PD-42 and I/S/M/L variants |
| M6 standard | M6 thread, convex 3~90mm | Ø1.0mm, standard | PD-62 and I/S/M/L variants |
| M3 coaxial | M3 thread, convex 0~90mm | Ø0.25/0.5mm, coaxial | PD-L35GA, PD-C310-35FA series |
| M4/M6 coaxial | M4 / M6 thread, convex 0~90mm | Ø0.25~1.0mm, coaxial | PD-C42 series, PD-C62 series |
| Right-angle coaxial | M3 / M4, 90° head | Ø0.25mm, coaxial | PD-C32TZ, PD-C42TZ |
Through-Beam Fiber Optic Cables (PT Series) — Representative Models
| Group | Mounting | Core / Arrangement | Typical Models |
|---|---|---|---|
| Bare wire / tube | Ø1.0~Ø3.0mm, no metal head | Ø0.2~0.6mm, standard | PT-R58V, PT-R59, PT-S1520-Q, PT-G32, PT-S31-Q series |
| M3 | M3 thread, convex 1~90mm | Ø1.0mm, standard | PT-32 and I/S/M/L variants |
| M4 | M4 thread, convex 3~90mm | Ø1.0mm, standard | PT-42 and I/S/M/L variants |
| M6 | M6 thread, convex 3~90mm | Ø1.0mm, standard | PT-62 and I/S/M/L variants |
| Right-angle coaxial | M3 / M4, 90° head | Ø0.25mm, coaxial | PT-C32TZ, PT-C42TZ |
Note: The tables list typical representative models; complete SKU combinations (convex length, cable length, head style) are available upon request. Fiber optic cables require a compatible fiber amplifier (PE1/PE2 series), sold separately.
Applications
- Detection in narrow spaces where standard photoelectric sensors cannot fit
- Small part presence, counting and positioning
- High-speed mark and label detection on packaging lines
- Heat, vibration or chemically harsh environments (fiber head only, amplifier remote)
- Through-beam detection of opaque webs, wires and small parts
- Coaxial sensing for small targets and tight alignment
How to Select
- Choose sensing method
Diffuse (PD) when only one side can be mounted; through-beam (PT) when both sides are accessible and higher reliability is needed. - Select mounting size
Match the thread (M3/M4/M6) or tube diameter (Ø1.5/Ø2/Ø3) to your mounting hole; choose a long convex tube if the target is recessed. - Select fiber arrangement
Standard for general use; coaxial for small targets or where only one-sided, center-aligned mounting is possible. - Choose head style and length
Straight or right-angle (TZ) for limited space; convex length 10/20/40/90mm for reach. - Pair with a fiber amplifier
Use AKUSENSE PE1 (standard) or PE2 (high-speed, IO-Link) series fiber amplifier; confirm the connector type on the amplifier end.
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