High-Power Laser Fiber-Type Cold Metal Detector
| Item | Spec. |
|---|---|
| Product type | High-power laser fiber-type cold metal detector |
| Detection method | Through-beam |
| Transmitter | FTL44A |
| Receivers | FTR44A FTR44AH FTR44AC |
| Light source | 904 nm semiconductor laser |
| Laser output | 90 W max. |
| Laser class | Class 1M |
| Detecting distance | 50 m max. |
| Power supply | 100–220 VAC, rated voltage -20%/+10%, 50/60 Hz |
| Power consumption | Transmitter: 10 W max.; Receiver: 10 W max. |
| Operation | ON-OFF control, Light-ON |
| OHA valid lens diameter | Φ28 mm |
| OH2 / OH2N valid lens diameter | Φ56 mm |
| OHA min. detectable object | Φ30 mm or larger |
| OH2 / OH2N min. detectable object | Φ60 mm or larger |
| Optical head / fiber ambient temperature | −25 to +200°C |
| Amplifier ambient temperature | −25 to +55°C, non-freezing |
| Ambient humidity | 35–85% RH, non-condensing |
| Fiber allowable bending radius | 50 mm |
| Protection rating | IP66 |
| Amplifier weight | Transmitter: approx. 1.5 kg; Receiver: approx. 1.5 kg |
Specification notes
Q1: What is the FT44A Series?
A: The FT44A Series is a high-power laser through-beam cold metal detector with heat-resistant fiber optics for presence and passage detection in steel and heavy-industry equipment.
Q2: Which models are currently available in the FT44A Series?
A: The current FTL44A transmitter can be paired with FTR44A, FTR44AH, or FTR44AC receivers, which mainly differ in control output type and response time.
Q3: What is the maximum detecting distance?
A: The FT44A Series provides a maximum detecting distance of 50 m.
Q4: What light source does the FT44A use?
A: The FTL44A uses a 904 nm semiconductor laser with a maximum output of 90 W and a Class 1M laser classification.
Q5: How much heat can the optical head and fiber withstand?
A: The optical head and fiber are rated for ambient temperatures from -25 to +200°C.
Q6: What are the differences among FTR44A, FTR44AH, and FTR44AC?
A: FTR44A uses a mini power relay with a response time of 25 ms max., FTR44AH uses a signal relay with 12 ms max., and FTR44AC uses a solid-state output with 10 ms max.
Q7: How does the FT44A help with optical alignment?
A: The receiver provides five-level received-light indication, allowing detection margin and optical alignment to be checked directly.
Q8: What do the self-check functions monitor?
A: The transmitter monitors laser emission, while the receiver checks received-light margin and provides a safety alarm if lens contamination or optical misalignment reduces stability.
Q9: Which optical heads can be used with the FT44A Series?
A: OHA standard, OH2 high-power, and OH2N narrow-view optical heads are available for different detection requirements.
Q10: What applications is the FT44A Series suitable for?
A: It is suitable for long-range material presence and passage detection in steel, ceramic, and other heavy-industry equipment, including applications where the sensing head is installed near a high-temperature furnace.