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Home » Products » Monitoring Systems » Fibre-optic pipeline monitoring – DAS, DTS and DSS

INTERLAB × LUNA · cooperation since 2010

Turn the application into a measurable specification

Use the relevant guide to qualify the sensing principle and its limits. INTERLAB can then shortlist the interrogator, sensing cable or sensors and channel configuration for the stated measurement requirement.

DFOSChoose the measurement principle before the interrogatorCompare DAS, DTS, DTSS, OFDR and point FBG by measured quantity, route length, spatial granularity and update rate.Open the buying guide →DASQualify vibration and acoustic-event detectionSee what DAS actually measures, which installation inputs govern performance and when a site trial is needed before hardware selection.Open the buying guide →DTSSSelect long-range distributed strain sensingUnderstand strain–temperature cross-sensitivity, sensing-cable coupling and the range-versus-resolution trade-off.Open the buying guide →DTSSpecify a distributed temperature systemTurn the required route, alarm logic, response time and temperature uncertainty into a defensible DTS configuration.Open the buying guide →

For equipment selection, send the measured quantity, route or test length, required spatial granularity, update rate, channel count, available fiber and target data interface.

Discuss the hardware configuration

* Manufacturer maxima refer to specific products, operating modes and channel counts; they are not necessarily available simultaneously. Final coverage, spatial granularity, rate and uncertainty are confirmed for the selected configuration and application conditions.

Pipelines · DAS · DTS · DSS/DTSS

One pipeline route, different threat mechanisms — match the measurement to the phenomenon

Third-party interference, leakage and slow ground deformation leave different signatures. INTERLAB brings together current DAS, DTS and DSS/DTSS equipment in a hardware architecture selected for the pipeline application.

third-party interference and excavationleakage and temperaturesettlement and landslidesevent location

An optical fibre can provide a distributed measurement profile along a pipeline, but no single mode identifies every hazard with the same confidence. DAS records vibration and dynamic events, DTS measures temperature, and DSS/DTSS tracks slowly changing strain.

System performance also depends on the sensing-cable construction, mechanical coupling to the ground or pipe, fibre quality, a baseline and acceptance criteria. Comparing interrogators only by their maximum range is therefore insufficient.

Which threats leave a measurable signature?

Define the failure mechanism and physical quantity first; select the interrogator afterwards.

Excavation and interference

Ground vibration, tool operation or vehicle movement can be recorded by DAS and located along the route.

Leakage

DTS looks for a thermal anomaly, while DAS records acoustic events. The result depends on the medium, pressure, temperature and cable installation.

Settlement and landslides

DSS/DTSS creates a static-strain profile that can be compared with the baseline and subsequent measurements.

Pig passage and valve operation

Dynamic events may produce characteristic DAS signatures that must be validated on the target route.

Problem → physical quantity → technology

Measurement layers can be combined, but each answers a different question.

Phenomenon / objective	Technology	What it provides	INTERLAB portfolio
excavation, vehicle, interference	DAS	time, location and vibration signature	OptaSense ATLAS, QuantX, Silixa iDAS-MG
thermal anomaly associated with a leak	DTS	temperature versus distance and time	LIOS PRE.VENT, Silixa ULTIMA, XT-DTS
settlement, creep, deformation	DSS / DTSS	static-strain profile and trend	Silixa iDSS, fibrisTerre
short critical section	OFDR / FBG	dense distributed profile or point measurement	ODiSI 7100, HYPERION and FBG sensors

Important: DTS does not detect every leak, and DAS is not a substitute for static-strain measurement. Classification and thresholds must be validated under representative conditions.

Current equipment in the INTERLAB portfolio

Selection starts with the required physical quantity, route length and cable-installation method.

DAS

OptaSense ATLAS

A multi-channel DAS platform for extensive linear assets and alarm integration.

View equipment →

DAS

OptaSense QuantX

Quantitative DAS for demanding applications and analysis over long distances.

View equipment →

DSS

Silixa iDSS

Distributed static-strain measurement for settlement, slopes and infrastructure.

View equipment →

Brillouin

fibrisTerre

Long-range distributed strain and temperature measurement for geotechnical applications.

View equipment →

DTS

LIOS PRE.VENT

Industrial distributed temperature and process monitoring along infrastructure.

View equipment →

DTS

Silixa XT-DTS

A DTS platform for temperature profiling in demanding field applications.

View equipment →

From event to actionable information

The complete measurement chain includes more than the interrogator.

Define the failure mode

Leakage, interference, deformation and temperature require different criteria.

Design the sensing cable

Cable construction and coupling determine whether the fibre receives strain, temperature or vibration.

Establish a baseline

A reference state and route-distance mapping support trending and event location.

Validate acceptance

Representative event tests verify thresholds, alarms and integration.

What must be defined before selecting the equipment?

For initial equipment selection, prepare:

process medium, pressure and temperature
route length and geometry
available fibres and their attenuation
highest-priority failure mechanisms
cable installation and mechanical coupling
required event-location performance
interface to SCADA or the alarm system
acceptance-test scenario and metrics

Frequently asked questions

Can an existing dark fibre be used?

Often yes, especially for DAS, but the route, fibre type, attenuation, splices, end access and mechanical coupling to the monitored asset must be qualified.

Can one system detect leakage, excavation and settlement?

This should not be assumed. Dynamic events, temperature and static strain are different physical quantities. The most suitable architecture may combine DAS, DTS and DSS.

Does DTS detect every leak?

No. A leak must create a thermal anomaly that can be distinguished from environmental variation. The medium, pressure, temperature and cable installation all matter.

Why is sensing-cable installation so important?

The interrogator analyses the signal in the fibre, but the cable transfers the phenomenon to that fibre. Poor coupling can prevent the system from measuring the intended quantity.

How are alarm thresholds defined?

They are based on the failure mechanism, baseline data, site conditions and testing. They are not a universal value taken from an interrogator data sheet.

Select DAS, DTS or DSS for the specific threat mechanism

Send us the route diagram, medium details, available fibres and the events the system should detect.

Turn the application into a measurable specification

One pipeline route, different threat mechanisms — match the measurement to the phenomenon