DTS-BLY-5S(LDV-20km)
Long-Range 20 km Distributed Temperature Sensing (DTS) System
DTS-BLY-5S(LDV-20km)
Long-Range 20 km Distributed Temperature Sensing (DTS) System
Measures continuous temperature profiles and abnormal-temperature locations along the fiber. Select range, fiber type, channels and sensing cable for the specified model.
Typical applications
Long-distance power tunnels and utility cable galleries; district heating pipelines laid in shared corridors; submarine cables
Spatial resolution, sampling interval and location accuracy are distinct quantities. Temperature accuracy depends on fiber length, acquisition time, temperature range and cable configuration; optimum values are not necessarily simultaneous.
Spatial resolution uses the 10%–90% step-response criterion and the ± spatial-extent notation used in this datasheet. Location accuracy is specified separately. Compare specifications using the same definitions and test conditions.
Technical specifications
| Parameter | Specification |
| Fiber Type | Multimode Fiber |
| Center Wavelength | 1550 nm |
| Measurement Range | 20 km |
| Spatial resolution | ±1 m |
| Location Accuracy | ±1 m |
| Measurement Time | ≤10 s/km(software-adjustable) / software-adjustable |
| Temperature Measurement Range | -40°C to 450°C (depending on cable type) Depending on cable type |
| Temperature Accuracy | ±0.5°C @ 10 km; ±1°C @ 20 km |
| Temperature Resolution | 0.01°C |
| Measurement Channels | Up to 16 channels |
| Optical Connector | FC/APC |
| Power Supply | DC 24 V; average power consumption ≤8 W |
| Operating Temperature | -10°C to 60°C |
| Storage Temperature | -20°C to 70°C |
| Communication Interfaces | 1 × RS-232, 1 × RJ45 Ethernet, 2 × RS-485, 8 relay outputs |
| Dimensions (W × D × H) | 482.6 × 442.7 × 88.8 mm (2U rack-mount) |
| Weight | 8 kg |
For advice on multimode fiber DTS system, share your monitoring distance, installation environment and integration requirements with our engineering team. We can help assess sensor placement, commissioning and acceptance criteria for your project.