Pipeline insulated-joint monitoring environment
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BELOW GROUND JOINT INSULATION TESTING

BGJIT Insulation
Testing & Monitoring

Remotely assess insulated-joint condition on buried pipeline assets using controlled diagnostic sequences, repeatable electrical measurements, deeper isolation analysis and integrated satellite result reporting.

Remote TestingControlled tests from remote workflowsDiagnostic AnalysisVjoint, load, isolation and leakageSatellite ConnectedIntegrated UltraLite telemetry pathwayCondition RecordsCompact snapshots for trending and review
Request a Demo Run Remote Test
BGJIT SENSOR INTERFACE
POWERSATELLITETESTINGALARM
RUGGED · LOW POWER · SECURE
TEST STATUS
Asset
IJC-A-00001
Vjoint
842 mV
Riso est.
12.4 MΩ
Leakage
68 nA
Result
PASS

Why BGJIT Monitoring Matters

Detect Insulation Failures Early

Identify changing joint isolation before deterioration becomes a larger integrity issue.

Protect Pipeline Integrity

Support cathodic-protection isolation assessment and abnormal leakage detection.

Reduce Field Visits

Run controlled tests and retrieve results without routine attendance at remote sites.

Compliance & Reporting

Retain repeatable test snapshots, trends and status flags for maintenance records.

Lower Operating Costs

Reduce inspection travel, downtime and unnecessary reactive maintenance.

Remote & Reliable

Designed for remote assets beyond dependable terrestrial communications.

How BGJIT Works

1. Connect

Connect approved test leads to the insulated joint or CP test points.

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2. Initiate Test

Start the controlled BGJIT diagnostic sequence from the remote workflow.

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3. Apply Test Load

Capture the open-circuit baseline, apply a known high-impedance branch, then remove it.

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4. Measure Condition

Estimate effective isolation resistance, leakage behaviour and test status.

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5. Transmit Results

Package the result snapshot for the integrated UltraLite satellite pathway.

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6. View & Analyse

Trend results, review alarms and integrate BGJIT data into customer systems.

Remote insulated joint continuity test

Press once to run an insulated joint continuity test.

The sequence below shows an operator initiating a remote insulated joint continuity test. The field unit measures Pipe A to Pipe B voltage, applies controlled diagnostic loading, estimates isolation resistance and leakage behaviour, then sends the result snapshot through the Myriota satellite network.

Office Test ConsoleOperator starts a controlled insulated joint continuity test from the remote dashboard.
Myriota Satellite RelayCommand packet is uplinked, relayed and delivered to the remote IJ monitor.
Insulated Joint MonitorThe unit samples the buried pipe leads, switches a known resistor branch and then removes the branch after measurement.
IJC Measurement Module
Vjoint842 mV
Load10 MΩ
InterfaceI²C
Test branchOpen circuit10 MΩ applied
Result SnapshotResistance estimate, leakage estimate, selected branch and status flags are prepared for telemetry.
Riso EstimatePending12.4 MΩ
LeakagePending68 nA
Branch UsedPending10 MΩ
FlagsReadyOK
1. OfficeWaiting for test command.IJ continuity test command transmitted.
2. SatelliteCommand path idle.Myriota relay active.
3. BGJITPassive input state.Diagnostic load applied, sampled, then removed.
4. ResultNo snapshot transmitted.Isolation snapshot calculated and returned.
REMOTE INSULATED-JOINT ENGINEERING

One BGJIT page from product overview through to the diagnostic method.

The same field unit that presents the operator-facing BGJIT workflow also supports the deeper electrical assessment needed for insulated-joint condition monitoring.

Measure Vjoint

Measure open-circuit pipe-to-pipe voltage between Pipe A and Pipe B to establish the electrical baseline under normal CP operating conditions.

Apply known loads

Apply controlled diagnostic loading one branch at a time and compare unloaded and loaded voltage without permanently bonding the joint.

Estimate isolation

Estimate effective isolation resistance and leakage behaviour from the measured voltage change under known loading conditions.

Report remotely

Package voltage, isolation estimate, leakage, selected test state and status flags for integrated UltraLite satellite telemetry.

HOW THE MONITOR OPERATES

Field-ready insulated-joint architecture.

The monitor connects across both sides of the insulated joint and measures the natural pipe-to-pipe potential difference under normal cathodic-protection conditions. This open-circuit measurement becomes the baseline for subsequent analysis.

Controlled diagnostic loading is applied for short intervals. Comparing loaded and unloaded voltage conditions enables estimation of effective isolation resistance and leakage behaviour without creating a permanent conductive bond.

The platform evaluates voltage stability, leakage trends and abnormal transfer behaviour that may indicate contamination, moisture ingress, conductive bypass paths, grounding faults or deteriorating joint performance.

  • Measures pipe-to-pipe insulated-joint voltage using precision differential acquisition.
  • Applies controlled high-impedance diagnostic loading to estimate effective isolation resistance and leakage behaviour.
  • Monitors changing electrical characteristics that may indicate contamination, moisture ingress or insulation degradation.
  • Supports RF isolation transfer analysis for identifying abnormal coupling behaviour across insulated joints.
  • Packages processed integrity measurements into telemetry-ready payloads for remote satellite reporting.
  • Designed for long-term monitoring where manual inspection is limited or infrequent.
ISOLATION CALCULATION

Voltage-based isolation estimate

Measure open-circuit voltage, then measure again with a known diagnostic load. The voltage change is used to estimate effective isolation resistance.

Riso_est = Rtest × (Vopen / Vload − 1)
LEAKAGE BEHAVIOUR

Estimated leakage current

The estimated isolation resistance can be used to calculate an approximate leakage current at the measured joint voltage.

Ileak_est = Vopen / Riso_est
OPTIONAL DIAGNOSTIC MODE

RF isolation transfer analysis.

In addition to conventional DC isolation testing, the platform can support RF Isolation Transfer analysis to identify abnormal conductive or capacitive coupling across insulated joints.

A controlled low-energy signal is introduced through the protected measurement network while the system measures the transferred signal on the opposite side. The received level is compared with the transmitted reference to calculate transfer behaviour.

Changes in RF characteristics may indicate conductive contamination, moisture bridging, degraded insulation, unintended bonding or early-stage joint deterioration that is not yet visible in conventional DC resistance measurements.

KEY MEASUREMENTS

Condition data that matters.

  • Pipe A to Pipe B voltage (Vjoint)
  • Known diagnostic load state
  • Isolation resistance estimate (Riso)
  • Derived leakage-current estimate
  • Test branch and sequence status
  • Measurement validity and alarm flags
  • Asset identity and timestamp
Isolation ResistancePASS
RUGGED FIELD-READY DESIGN

Built for unattended pipeline assets.

  • Rugged field enclosure architecture
  • Low-power unattended operation
  • Protected measurement inputs
  • Controlled diagnostic switching
  • Integrated UltraLite satellite communications
  • Designed for harsh remote environments
BGJIT SENSOR
POWERSATELLITETESTINGALARM
Typical insulated-joint test setup
TYPICAL TEST SETUP

Pipe A ↔ Pipe B

Connect across approved CP test points or insulated-joint leads. BGJIT samples the baseline condition, applies the known diagnostic branch, then returns to the passive state.

TEST LEAD ATEST LEAD B
TELEMETRY PAYLOAD

Compact result snapshots for remote trending and alarms.

Vjoint

Pipe A to Pipe B voltage measured before diagnostic loading.

Riso estimate

Estimated effective isolation resistance calculated from controlled loaded measurements.

Leakage estimate

Derived leakage-current estimate based on measured voltage and isolation estimate.

Status flags

Measurement validity, low signal, overrange, selected state, RF status and alarm indicators.

FIELD PROCEDURE

Repeatable test sequence.

1

Pre-connection checks

Confirm joint ID, site condition, work authority and expected CP operating state before connecting the monitor.

2

Connect across the joint

Connect monitor leads to the two sides of the insulated joint using approved CP test leads or test posts.

3

Measure open-circuit voltage

Record the natural pipe-to-pipe voltage with no diagnostic load applied. This is the baseline Vopen reading.

4

Run diagnostic loading

Apply one known test state at a time, measure loaded voltage, then remove the load.

5

Run RF transfer analysis

Use low-energy RF transfer analysis, where enabled, to evaluate abnormal conductive or capacitive coupling across the joint.

6

Transmit result

Queue processed values and status flags for integrated UltraLite satellite telemetry or local retrieval.

MEASUREMENT INTERPRETATION

Designed for condition assessment and trending.

The monitoring system supports insulated-joint assessment alongside operator cathodic-protection procedures and integrity-management programmes.

Measured values should be interpreted with standard field measurements such as pipe-to-soil potentials, ON/OFF surveys, interference testing and inspection records.

Isolation estimates, leakage calculations and RF transfer behaviour are diagnostic indicators for trending and condition assessment rather than standalone certification measurements.

Site / Joint IDOperator-assigned asset reference
VjointPipe A to Pipe B voltage
Riso_estEstimated isolation resistance
Ileak_estEstimated leakage current
RF isolationRF transfer result, where enabled
FlagsMeasurement status and alarms

Applications

Oil & Gas Pipelines

Remote insulation assessment across long-distance protected pipeline networks.

Refined Products

Isolation monitoring around refineries, terminals and process infrastructure.

Water Pipelines

Condition testing for buried metallic water pipelines and isolated structures.

Gas Distribution

Trend insulated-joint behaviour across distributed protected gas assets.

Mining Operations

Monitor remote buried assets and electrical isolation in demanding mine environments.

Remote Infrastructure

Satellite-connected diagnostics where field access is costly or infrequent.

Integrates With Your Systems

REST API
MQTT
HTTPS
Modbus TCP
OPC UA
SQL
CSV / Excel
Grafana
Node-RED
SCADA
Custom Systems
Need a BGJIT solution for your pipeline network?Talk to Sat Sensor Tech about your insulated-joint and remote CP monitoring requirements.
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