NJEX 6300/7300/8300 with Sentry 4 Software

The NJEX series odorization systems represent the leading technology in placing Ethyl Mercaptan, a.k.a. odorant, into natural gas flow streams. NJEX Odorization Systems These systems are engineered to measure and inject precise amounts of liquid odorant into each cubic foot, or meter, of gas that flows down the pipeline.

Our systems are, and always have been, the leading edge in technology. The new NJEX 300 series systems offer technology that allows remote communications, system analysis and reconfiguration in real time via a direct or SCADA comm link. Their odorant measurement resolution is unsurpassed in accuracy to allow you to know exactly how much odorant is placed into the flow stream, not guessing at what's absorbed.

NJEX systems offer a variety of features and options to inject into a range of flow rates from low volume distribution systems to main-line transmission systems. Some of these features and options include:

  • Single, double, or multiple injection systems top provide redundancy or high flow capability
  • An odorization pump, measurement device, electronic controller and other components specifically designed and built for odorization use.
  • Skid mounted tanks and secondary containment skids
  • Insulated cabinets with optional heaters
  • Remote communications, system analysis, and alarm indication for reliable operation


Our NJEX systems have a brain and they know how to talk. Our WindowsTM based Sentry4 software is specifically written for odorization system management and Sentry 4 Software employs communication, alarm management, remote diagnostic and reporting functions to allow remote management of the NJEX systems in real-time.

Each NJEX system is ready to communicate through the use of ModbusTM protocol, which supports both RTU and ASCII formats. As a standard feature, the NJEX units have two RS-485 commlinks, which are configurable for either redundant SCADA communication or one SCADA and one direct Sentry4 commlink.

The Sentry4 software can utilize one of those commlinks to allow you to remotely monitor system operation from your laptop or PC. This can be especially helpful if Gas Control receives an operation alarm in the middle of night, during the dead of winter. Imagine for a moment a 2:00am alarm call comes in from your odorization system to Gas Control. Instead of suiting up in the middle of the night and driving 50, 100 or more miles you can now walk over to your computer in your robe and slippers, and dial up the NJEX to see what's happening. Once on-line you can analyze the situation, reset parameters if appropriate, start-up a redundant system, and determine if a crew needs to work that overtime for the night. With other systems, you're on the road, with NJEX, you're working smart.




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For pricing information or to speak with a sales representative, please call us at 205-699-7282 or 800-370-1882. Please allow us to serve you!