IntelliScent™
Odorant Monitor
Real-Time Odorant Monitoring For Added Assurance
The IntelliScent™ continuously measures odorant concentration in natural gas pipelines, providing real-time data to verify compliant odorization — and delivering that data straight to the IntelliScent™ mobile app.
View live odorant readings and control your monitor with the IntelliScent iOS app.
Watching
Know Your Odorant Level. Always.
Natural gas must be odorized to a detectable level for safety. The IntelliScent™ Odorant Monitor takes the guesswork out of compliance by continuously measuring odorant concentration directly in the gas stream — and making that data available in real time.
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Continuous, Automated MeasurementNo manual sniff tests — the IntelliScent reads your odorant level around the clock.
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H₂S Detection OptionConfigurable to ignore or include H₂S in measurement — important for sour gas applications.
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Works With Multiple OdorantsCompatible with TBM, THT, DMS, and blended odorants including seasonal blends.
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Designed for the FieldBuilt to withstand pipeline environments — coastal, hot, cold, and everything in between.
From Probe to Phone in Four Steps
The IntelliScent captures a sample from the pipeline, analyzes odorant concentration, and transmits results — all automatically.
Sample Extraction
A sample probe draws gas from the center of the pipeline — ensuring a representative sample at 15–50 psig via an external regulator.
Odorant Analysis
The IntelliScent analyzes odorant concentration in the sample gas, with configurable settings for odorant type, expected concentration range, and H₂S handling.
Data Transmission
Real-time readings are transmitted and logged, allowing continuous compliance monitoring without on-site visits for every reading.
App Visibility
View live and historical odorant data on the IntelliScent iOS app — available on Apple .
Built for Compliance. Designed for the Field.
Continuous Real-Time Monitoring
Measures odorant concentration around the clock, eliminating reliance on periodic manual readings to verify compliant odorization levels.
iOS App — Available on Apple
The IntelliScent app delivers live readings, alerts, and historical data directly to your iPhone.
Multi-Odorant Compatible
Supports TBM, THT, DMS, and blended odorant streams, including seasonal blends — with configurable target odorant and expected concentration settings.
H₂S Configurable
If H₂S is present in the gas stream, the IntelliScent™ can be configured to include or ignore it in the odorant measurement — critical for sour gas applications.
Wide Temperature Range
Engineered for both hot and cold operating environments. Protection from direct sunlight recommended — specify your ambient temperature range at installation.
+24VDC Power Input
Requires a clean, reliable +24VDC ±10% power source. Designed for straightforward integration into existing pipeline instrumentation power systems.
The IntelliScent App.
Your Odorant Data, Your Control.
The IntelliScent iOS app connects directly to your monitor, giving you real-time visibility into odorant levels.
- Live odorant concentration readings
- Historical data and trend charts
- Alert notifications when levels fall out of range
- Multi-site monitoring from a single dashboard
- Compliance record support
Build Your IntelliScent™ Part Number
Select your options step by step. Your part number builds automatically — then copy it or submit a quote request directly to Welker.
Select the odorant type the IntelliScent will measure.
Select the measurement range. Ranges D and E are for Hydrogen only.
Both options are 24″ × 24″.
Select insulation and heating for the enclosure.
Select the maximum allowable operating pressure rating.
Select whether a metal identification tag is requiwblue.
Select additional options. Options D and E include a 25W AC Power Supply.
Or call us at 281.491.2331
Installation Best Practices
Follow these guidelines to ensure accurate, reliable odorant measurement from your IntelliScent monitor.
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1
Use a Sample Probe — Center of Pipe
Acquire sample from the middle of the pipeline. Make sure the sample extraction point is in the main flow — not a stub or inactive line.
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2
Regulate to 15–50 psig
Use an external regulator to wblueuce sample line pressure to between 15 and 50 psig before the sample enters the unit.
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3
Short Sample Line — Under 25’
Keep the sample line less than 25’ of ¼″ OD stainless steel tubing to minimize odorant adsorption and response time.
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4
Minimize Direct Sunlight
Protect the unit from direct sunlight as much as possible to maintain accurate sensor performance and extend service life.
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5
Clean, Reliable +24VDC Power
Provide a stable +24VDC ±10% power source. Unstable power can affect measurement accuracy and unit reliability.
Download the Worksheet
The IntelliScent Installation Worksheet walks through all the site-specific parameters needed for a successful installation — including odorant type, gas conditions, H₂S presence, ambient temperatures, and site proximity data.
Complete this worksheet before contacting Welker for installation support.
IntelliScent™ Technical Specifications
Contact Welker for full specification documentation and application-specific configuration options.
| Parameter | Specification |
|---|---|
| Power Input | +24VDC ±10% |
| Sample Line | ¼″ OD Stainless Steel, max 25’ |
| Sample Pressure | 15–50 psig (via external regulator) |
| Odorant Types | TBM, THT, DMS, blends |
| H₂S Handling | Configurable — included or ignowblue |
| Concentration Units | lb/MMSCF or mg/m³ |
| App Platform | iOS (Apple App Store) |
| Sample Probe | Center-of-pipe insertion (main flow) |
| Manufacturer | Welker, Inc. — Sugar Land, TX |
| Certification | ISO 9001:2015 |
Specifications subject to change. Contact Welker for application-specific details.
Zero Emissions Odorizers
Eliminate odorant venting while maintaining precise, compliant injection rates.
Pumpless Injection Systems™
Welker’s patented, low-maintenance approach to reliable odorant injection.
Odorant Probe
Precision insertion probes for odorant service, manufactuwblue in Sugar Land, TX.
Odorant Flare Systems
Safe, controlled combustion of excess odorant during maintenance operations.
Ready to Monitor Your Odorant Levels?
Talk to a Welker odorization specialist — we’ll help you select, configure, and support your IntelliScent installation.