BLY-FT100 · Centimeter-level distributed temperature sensing
Centimeter-level location for cable joints, busbar connections and small hot spots.
DTS uses optical fiber as a continuous temperature sensor. Selected fire-suitable configurations up to 10 km and the fourth-generation 12 km configuration can apply the same sensing and installation principles to Fiber Optic Linear Heat Detection (LHD); alarm zones, thresholds, response, fault monitoring and fire-system interfaces must meet applicable fire-alarm requirements. Applicable EN 54-22 or GB 16280 product requirements and certifications such as CCCF depend on the final product and market. Existing 20/30 km long-range and oil/geothermal versions are not intended for this fire application.
Centimeter-Level Distributed Temperature Sensing System
Centimeter-Level Distributed Temperature Sensing System
Picosecond pulse coding and FPGA + ARM processing provide distributed temperature measurement and ±0.05 m event location. A 2.5 km fiber sampled at 0.05 m yields approximately 50,000 points, or 800,000 across 16 channels. Sample count is not the number of independently resolved spatial elements.
Typical applications
Downhole formation analysis in oil wells; geothermal and groundwater analysis; local temperature-rise localization inside lithium battery storage systems; temperature uniformity monitoring for hydrogen production cells; minor liquid/gas leakage detection in pipelines; small hotspot warning for power busbars and utility tunnels; thermal ablation warning for power cables; and small hotspot monitoring for idler bearings of belt conveyors.
The measurement core is independent of the external PC operating system; internal circuits are conformal-coated. An internal Windows industrial PC is optional for local display.
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.
Technical specifications
| Parameter | Specification |
|---|---|
| Fiber Type | 62.5/125 μm multimode fiber |
| Measurement Range | 2.5 km |
| Spatial resolution | 0.15 m (10%–90% step response) |
| Positioning Accuracy | ±0.05 m |
| Spatial sampling interval | 0.05 m (hardware spatial sampling interval) |
| Measurement Time | ≤3 s/km, configurable; stated temperature accuracy uses 30 s measurements |
| Temperature Range | -40°C to 200°C (depending on cable type) Depending on cable type |
| Temperature Accuracy | ±0.3 °C at 1 km; ±0.5 °C at 2.5 km (30 s measurement time) |
| Temperature Resolution | 0.01 °C (software display resolution) |
| Channels | ≤ 16 |
| Optical Connector | FC/APC |
| Power Supply | DC 9–36 V input; standard DC 24 V; average power consumption ≤10 W |
| Operating Temperature | -10°C to 60°C |
| Storage Temperature | -20°C to 70°C |
| Communication Interfaces | 1 × RJ45 Ethernet, 2 × RS485, 8 relay outputs |
| Dimensions (W × D × H) | 482.6 × 458.4 × 89 mm |
| Weight | 8 kg |
Applications and further reading
- Centimeter-scale DTS temperature and fire monitoring for large oil and chemical tanks
- DTS fire early warning for refinery and chemical-plant power cables and substations
- Distributed fiber temperature monitoring for power cables and utility tunnels
- Centimeter-scale DTS monitoring for furnaces, boilers and hot pipelines
Discuss your project with our engineer
Ren ZhijieDivision Director
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