NOx Monitoring

Monico NOx Gateway

NOx Gateway

A protocol converter that allows customers to integrate aftermarket NOx sensors with their SCADA or control system via many different protocols.

Continuous Emissions Monitoring

The NOx Gateway™ allows for the integration of aftermarket NOx sensors, such as the Caterpillar® NOx sensor, into a SCADA system or control system using many different protocols for simple NOx emissions monitoring. With the ever changing landscape of emissions monitoring and reporting, this Gateway can help get continuous emissions monitoring data to your corporate system, or it can collect data locally for later reporting and analysis.

Basic Features Benefits 2 

The NOx Gateway is totally preconfigured to eliminate time intensive field configuration. The only field setup required is for network specific items such as IP address or drop number. The Gateway has convenient, removable terminal blocks for 24 VDC power input and NOx sensor input. A link light will confirm proper installation wiring and network traffic. Any minor field configuration modifications are done via our free software MonicoView II™.

Features of this Gateway include USB Interface for programming, troubleshooting, and live viewing, preconfigured mapping and setup, (2) RS-232 ports, (1) RS-485 Port, and (1) Ethernet port and seven similar protocols, four additional input/output ports for gathering data from other devices and Optional digital and analog I/O module for ancillary temperature and pressure signals such as catalyst bed monitoring.

Available Pre-Configured Versions

  • Modbus over RS-232, RS-485, or Ethernet
  • Allen Bradley SLC and MicroLogix over DF1
  • Allen Bradley Ethernet IP for ControlLogix and CompactLogix
  • Siemens S5/S7 PLC
  • GE Fanuc PLC
  • Omron PLC
  • BACnet over serial and IP for Building Management System
  • SNMP for Data Center Management

NOx Monitoring

Common applications for the NOx Gateway™ are Natural Gas Compressors and Bi-fuel systems where gas is injected into diesel engines to substitute for diesel fuel, thus reducing harmful emissions. When you introduce Natural Gas into the air stream at about fifty percent substitution rate, the NOx is reduced by between thirty and fifty percent, the SOx is almost eliminated, and the formaldehyde is drastically reduced. These are all gases that are currently regulated by the EPA, and are known to be harmful to the environment. The most popular bi-fuel applications are in Prime Power applications such as drilling rigs, there are many other applications that are becoming more popular. Many emergency backup generators would be well suited for bi-fuel.

Read our Bi-Fuel Systems Whitepaper

NOx Monitoring – Nitrogen Oxides

Nitrogen Oxide gas is created and emitted into the environment when burning natural gas in an internal combustion engine, and the EPA requires NOx emissions monitoring under the Acid Rain Program.

Parameters monitored by the NOx Gateway:

  • NOx Concentration in ppm
  • O2 Percentage
  • Various troubleshooting and status parameters

Continuous Emissions Monitoring

Continuous emissions monitoring is a way to ensure that your company is in compliance with the EPA’s Acid Rain Program, which mandates that NOx and SO2 emissions are reduced. Continuous emissions monitoring, as the name implies, is the continual monitoring of the amount of NOx and SO2 released into the environment through combustion or industrial processes. Also included under the Acid Rain Program are regulations for the maintenance of equipment, recordkeeping and reporting- all of which the NOx Gateway can assist with.