NOx Gateway Plus
WHAT IS NOx Gateway Plus?
NOx Gateway PLUS for Remote NOx Monitoring and More
A protocol converter that allows customers to integrate aftermarket NOx sensors with their SCADA or control system via many different protocols. Features include real-time data logging, Mail Server, Sync Server, Time Manager, and Virtual HMI Web Server.
The NOx Gateway PLUS™ adds the capabilities of real-time data logging, email alerts, virtual HMI capabilities and a custom HTML server to the benefits of the basic version.
As with the basic version, this gateway is designed to integrate an aftermarket NOx sensor into any SCADA or control system via a variety of protocols to make the integration of NOx emission monitoring into your overall monitoring system an easy step.
The Gateway is fully preconfigured to do away with time intensive field configuration, and set up can be done by most qualified technicians with basic computer skills. 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™.
NOx Emissions Monitoring
A virtual color touch screen HMI for viewing live data and trends over Google Chrome and a custom HTML web server let you take the data collected through this gateway anywhere and access it from any location with internet access. As the landscape and requirements of emissions monitoring and reporting changes, this Gateway offers great flexibility for adaptation while helping get emissions data to your corporate system. It can also collect data locally for later reporting or analysis.
Some of the features that allow these capabilities are real-time data logging on 2GB Compact Flash memory, email alerts upon alarm with IP connection, a sync server to sync log files with a remote server, an FTP server to allow a remote FTP Client to manage log files, a USB Interface for programming, troubleshooting and live viewing, 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. All units are C-UL approved for Class I Div II Groups A-D locations and adaptable with our CDL Gateways for monitoring the Caterpillar® NOx sensor.
Benefits & Features
- Pre-configured solution that provides basic HMI screens over the internet •C-UL approved for Class I Div II groups A-D locations
- SMTP Server and SMS Server for email notification of alarms and shutdowns
- Up to 2GB Compact Flash card that will store up to 200 days work of data
- Sync Server to copy data log files with an external server located on the network
- FTP Server to upload data log files from any location on the network
- Time Manager to automatically sync the real-time clock to a server or external source
- Full diagnostic and fault code support with text descriptions
- LED indication lights for communication and power confirmation
Parameters Monitored:
- NOx Concentration in ppm
- O2 Percentage
- Various troubleshooting and status parameters
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
Remote Emissions Monitoring
Nitrogen oxide gasses are considered dangerous by the EPA because of their contribution to a ground-level ozone layer and effects on the respiratory system. It began regulations surrounding NOx emissions in 1971, and now encourages continuous emissions monitoring to prevent the gasses produced from harming the environment. In 2013, the EPA issued a series of requirements for state and local agencies requiring NOx monitoring and is working to enact more regulations to reduce the amount of nitrogen oxide gasses in the air through the Clean Air Act and Acid Rain Program.
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Future-proof your monitoring system
Looking for the Next Generation of Industrial Monitoring?
Monico’s mCore® SDR is the powerful evolution of our trusted gateway technology — combining protocol conversion, edge processing, and remote connectivity in one intelligent device. With onboard analytics, flexible I/O, and seamless integration to the cloud or MonicoLive™, mCore® SDR gives you more visibility, control, and scalability than ever before.
Why Monico
Key advantages that set us apart
Your Data is Yours
Your data is securely collected and stored, always remaining under your control, so you can make informed decisions without concerns about data accessibility or third-party restrictions. We’re here to empower you with the insights you need, not limit how you use your data.
Preconfigured, No Coding Required
Our solutions come preconfigured and ready to deploy without the need for complex coding or development. This plug-and-play approach gets you up and running faster, no coding or data analysis required.
Modern Intuitive Platform
Our platform is designed with you in mind, combining modern functionality with an intuitive interface that simplifies data monitoring and visualization. With Monico, you’ll experience an easy-to-navigate system that makes it simple to access, interpret, and act on your data.
OEM-Agnostic, Multi-Protocol Support
Our gateways are preconfigured for your specific equipment and work seamlessly with most major industrial OEMs. With broad protocol support, they easily integrate into mixed fleets—no custom coding or complex setup required.
EASY AS 1,2,3
The Shortest Path to Real-Time
Actionable Intelligence™
1
Schedule a Demo
We’ll walk you through the process and share examples grounded in real data. No big sales pitch. We’ll discuss the problems you’re trying to solve, identify your needs and address your questions about ROI, security, the implementation process, and more.
2
Let Us Configure Your Solution
We won’t just sell you a gateway and wish you luck. Our powerful solutions are simplified for each customer by being pre-configured, down to the serial number of each asset. You’ll easily access data and gain insights from day one, without struggling with siloed data or differing protocols.
3
Count On Us for Support
Our job isn’t done until implementation is successful and you’re getting data exactly the way you want it, where you want it. We’ll provide installation, training and support. In addition, our online resource library is available 24/7.
FAQs
Frequently Asked Questions
What is the NOx Gateway™ used for?
The NOx Gateway™ is a protocol converter that integrates aftermarket NOx sensors — like those used with Caterpillar® engines — into control systems or SCADA environments. It simplifies continuous emissions monitoring (CEM) by translating sensor data into standard industrial protocols.
What does it monitor exactly?
The Gateway collects and outputs key emissions data, including NOx concentrations (in ppm) and O₂ percentage, along with diagnostic parameters and sensor status. This data supports regulatory reporting, compliance, and environmental optimization.
Which applications is this designed for?
It’s commonly used in natural gas compressor stations, bi-fuel systems, and prime power operations like drilling rigs or large generators. It’s also suited for backup power systems where emissions monitoring is becoming more common under expanding EPA regulations.
What communication protocols are supported?
The NOx Gateway™ supports a wide range of output protocols, including:
- SNMP (for data center management)
- Modbus RTU/TCP
- Allen Bradley DF1 / Ethernet IP
- Siemens S5/S7
- GE Fanuc and Omron PLCs
- BACnet (for building management systems)
Is it pre-configured or does it require programming?
It is fully pre-configured, making it easy to install. The only required setup is entering network-specific parameters like IP addresses or node numbers. Any adjustments can be made via Monico’s free MonicoView II™ software.
What types of sensors is it compatible with?
It’s designed to work with aftermarket NOx sensors, including those commonly used in Caterpillar® and other industrial engines. Compatibility includes sensors capable of providing analog or digital NOx and O₂ readings.
Can it integrate with existing control systems?
Yes. The Gateway can connect directly to most SCADA systems, PLCs, or building automation systems via standard serial or Ethernet-based protocols. It bridges the gap between emissions hardware and industrial automation platforms.
What kind of I/O does it support?
In addition to NOx sensor inputs, the Gateway can be expanded with optional digital and analog I/O modules, allowing integration of ancillary signals such as catalyst bed temperature, pressure sensors, or system alarms.
Is this suitable for hazardous or industrial environments?
Yes. The NOx Gateway™ is C-UL approved for Class I, Div II Groups A-D, making it a rugged solution for use in harsh or regulated field environments.
What makes this different from generic protocol converters?
Most protocol converters are not designed for emissions data or bi-fuel monitoring. The NOx Gateway™ is built with pre-mapped emissions parameters, tailored sensor support, and industry-specific features that simplify integration in emissions-sensitive systems.
