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OdorEyes by Welker Accu/Line Lo Odorization System

Accu/Line™ Lo

Smart low-flow odorant injection for dependable natural gas odorization

The Welker Accu/Line™ Lo is a turnkey natural gas injection odorization system designed for low-flow transmission pipelines, distribution pipelines, compressor stations, power plants, peaking facilities, municipalities, and renewable natural gas applications. Built for flow rates from 1 Mscfh up to 720 Mscfh and maximum operating pressure up to 1800 psig, the Accu/Line™ Lo automatically adjusts odorant injection rate to changing flow conditions for continuous proportional-to-flow odorization. With an intuitive touch screen controller, Modbus or Ethernet communication, audit trail and alarm logging, redundant pumps with automatic failover, and self-priming pumps, the Accu/Line™ Lo supports accurate odorant delivery in low-flow and variable-flow natural gas systems.

Where to Use

Low-Flow Natural Gas Odorization

Turnkey odorant injection for low-flow transmission pipelines, distribution pipelines, compressor stations, and utility systems.

Municipal and Distribution Applications

Proportional-to-flow odorization for municipalities, gas distribution systems, power plants, and peaking facilities.

Renewable Natural Gas Odorization

Odorant injection for low-flow RNG, biogas, and biomethane applications.


Touch Screen Controller

Automatically adjusts the injection rate to changing flow conditions for continuous proportional-to-flow odorization.

Remote Monitoring Using Modbus or Ethernet

Supports off-site system monitoring and troubleshooting without frequent site visits.

Audit Trail and Alarm Log on microSD Card

Stores historical records for reporting, maintenance planning, and alarm review.

Redundant Pumps With Automatic Failover

Helps limit interruptions to operation and maintain odorant delivery.

Self-Priming Pumps

Helps eliminate vapor lock for dependable low-flow odorization.

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