特點
• Real time measurement mode
• Uses low-cost telecom fiber
• ior spatial resolution and range
• Excellent temperature precision and resolution
• Multiple channel monitoring available
• Alarm monitoring capability
• 100km sensing range
性能
• 10 cm spatial resolution
• &plun; 0.1ºC accuracy (2σ)
• 100 km maximum sensing range
• 5 kHz frequency uncertainty
• -270ºC minimum temperature sensing
• 1 second measurement (catastrophic mode)
• Fire detection mode
• +30 dB dynamic range
應用范圍
1、Fire Detection:
Specialized software provides the needed speed of measurement to detect the build-up of heat or the outbreak of fire. The Foresight™ B-DTS offers greater range for sensing without reduction in spatial resolution1. A length of fiber can be laid out in a large grid to pinpoint a
fire within a couple of meters. With 2.5 meters resolution for 20 km sensing range, the temperature can be measured with an uncertainty of
only &plun;1.5 °C within a range of 0 °C to 100 °C, in less than 24 seconds.
2、Oil & Gas Pipeline Monitoring:
ess the integrity of pipelines with the use of the Foresight™ B-DTS. By measuring the localized changes in temperature ociated with the venting or decompression from the pipeline, the B-DTS provides alarms and notification of events along the entire monitored area automatically via its software. Such leaks result in cooling
or heating, depending on the pipeline, that is detectable using the B-DTS. Its enhanced range of performance andbetter immunity to hydrogen attenuation makes the B-DTS a logical choice in pipeline monitoring.
3、Oil and Gas Reservoir Monitoring:
DTS provides for real time and continuous monitoring as required for Oil & Gas reservoir management. Additionally, the Brillouin DTS
offers key benefits over the widely deployed Raman DTS method. The B-DTS is a frequency based measurement; not intensity like Raman. This provides for greater dynamic range to overcome attenuation in the fiber. By using pure core single mode fibers, the lifespan
is greatly enhanced against hydrogen darkening: this is in addition to the greater dynamic range of the Foresight™. Since single mode
fibers are utilized, 5 cm sampling and 10 cm spatial resolution of temperature events is easily obtained. Stable frequency measurements,
greater dynamic range, longer fiber life, and better spatial resolution are key benefits that set theForesight™ B-DTS.
4、Power Cable Monitoring:
Optical sensing provides for the direct measurement of heat ociated with corrosion in power cables. Additionally, existing infrastructure
can be operated more efficiently and carry more load safely by the direct measurement of temperature. The Foresight™ B-DTS provides excellent range for temperature measurement: up to 100 km sensing range. By using a built-in optical switch, 200 km can easily be monitored via by the same B-DTS. Furthermore, built-in software controls allow the easy use of external optical switches from the B-DTS as well, greatly enhancing and expanding the number of cables being monitored by a single B-DTS.
5、Macro Temperature Monitoring:
DTS is an excellent choice for researchers and climatologists who need to measure large areas and long lengths for subtle temperature
variances. The ior range of spatial resolution and low cost of single mode fiber for sensing makes the B-DTS an ideal choice for macro measurements.
6、Cryostat Temperature Measurement:
The B-DTS has successfully measured temperatures below 25° Kelvin. One such application was the monitoring of heat build-up in a conductor. With rapid, continuous measurements, the B-DTS is more than just a temperature probe. It can act as an early warning and alarm system to prevent thermal runaway of the
conductor. With its excellent 10cm spatial resolution and 2 km sensing range, users can manage the fiber deployment to easily
obtain a very short simulated spatial resolution2 of 1 cm or less.
