- NATURAL GAS GENERATOR EMISSIONS CONTROL | POWER GENERATION
BlueMAX™ 500 & 520-Series
Selective Catalytic Reduction (SCR) System for Natural Gas Generators
Reduce NOₓ, CO, and HC emissions from stationary lean-burn natural gas engines with an integrated Oxidation Catalyst (OC) and Selective Catalytic Reduction (SCR) system engineered for continuous power generation.
99%
NOₓ REDUCTION
98%
CO REDUCTION
97%
HC REDUCTION
BUILT FOR
POWER GENERATION
Reliable emissions control for every critical power application.
DATA CENTERS
Mission-critical backup power you can depend on. Zero tolerance for permit risk or downtime.
HOSPITALS
Emergency standby systems where uninterrupted operation is a regulatory and patient safety requirement.
UTILITIES
Peak shaving and grid support where strict emissions permit requirements apply at every site.
MANUFACTURING
Continuous-duty prime power for non-stop industrial operations that can’t tolerate permit disruptions.
SYSTEM ARCHITECTURE
How the BLUEMAX™ 500 & 520 System Works
The Oxidation Catalyst (OC) first reduces Carbon Monoxide (CO) and Hydrocarbons (HC). The SCR catalyst then uses precisely controlled DEF injection to convert Nitrogen Oxides (NOₓ) into nitrogen and water, delivering reliable emissions control for lean-burn natural gas generators.
High NOₓ Reduction
Advanced SCR technology significantly reduces Nitrogen Oxides (NOₓ)
Smart DEF Control
Closed-loop DEF dosing continuously optimizes emissions performance
Low Exhaust Restriction
Maintains engine efficiency with optimized exhaust flow
OEM & Retrofit Ready
Suitable for new generator packages and existing installations
CHOOSING YOUR CONFIGURATION
500-Series vs 520-Series
Same proven OC + SCR system. Two housing profiles. The right choice comes down to how much vertical space your installation has.
Identical performance, identical technology. Both series use the same integrated Oxidation Catalyst and Selective Reduction system, the same automated DEF dosing and controls, and deliver the same emissions reduction. They differ in two ways: housing profile and service access.
BlueMAX™
500-Series
Standard-Profile Configuration
Housing profile
Standard-profile
Service Access
Hinged access door
Technology
OC + SCR
DEF dosing
Automated, closed-loop
Silencing
Integrated or standalone
Installation
OEM & retrofit
Best for
Standard overhead clearance, and sites where fast, in-place service matters. The hinged access door opens for straightforward inspection and catalyst element replacement without pulling the unit from the exhaust line
BlueMAX™
520-Series
Low-Profile Configuration
Housing profile
Low-profile
Service Access
Removable panel
Technology
OC + SCR
DEF dosing
Automated, closed-loop
Silencing
Integrated or standalone
Installation
OEM & retrofit
Best for
Height-restricted installations, enclosures, containerized gensets, and retrofits where vertical clearance is limited. A removeable service panel keeps the low profile while still allowing catalyst access.
SILENCING OPTIONS
Silencer Grade Designations
BlueMAX™ 500 and 520-Series systems are available with a range of integrated silencer grades, from industrial to hospital-grade attenuation. Each grade carries a two-letter designation code.
Select a shape above
CONTROLS AND MONITORING
Visibility & Control
Real-time Data. Smarter Decisions. Maximum uptime.
HMI Display
Real-time NOₓ, DEF level, exhaust pressure, and system status. Active error codes included.
Data Logging
Onboard logging of NOₓ reduction, DEF consumption, and operating hours for compliance reporting.
Alarms & Alerts
3 configurable alarm outputs. BMS dry-contact compatible.
Remote Monitoring
System status and alarm visibility without requiring on-site access.
- MODBUS RTU/TCP
- BMS Integration
PTLOG™ 270SCR Controller
Intuitive onboard controller with real-time system visibility
FREQUENTLY ASKED QUESTIONS
BLUEMAX™ 500 & 520-Series Common Questions
Find quick answers about the integrated OC and SCR systems for stationary lean-burn natural gas generators.
What is the BlueMAX™ 500 & 520-Series?
BlueMAX™ 500 & 520-Series is an integrated Oxidation Catalyst (OC) and Selective Catalytic Reduction (SCR) system designed to reduce NOₓ, Carbon Monoxide (CO), and Hydrocarbons (HC) from stationary lean-burn natural gas generators.
How does the BlueMAX™ 500 & 520-Series work?
The Oxidation Catalyst reduces CO and HC emissions before the exhaust enters the SCR catalyst, where DEF is precisely injected to convert NOₓ into nitrogen and water vapor.
Which engines are compatible with the system?
BlueMAX™ 500 & 520-Series is designed specifically for stationary lean-burn natural gas engines operating in standby, prime power, and continuous-duty applications.
What emissions does the system reduce
The integrated system reduces Nitrogen Oxides (NOₓ), Carbon Monoxide (CO), and Hydrocarbons (HC), helping facilities comply with stringent emissions regulations.
What is the difference between the BlueMAX™ 500 and 520?
The BlueMAX™ 500 features a standard-profile housing, while the BlueMAX™ 520 offers a low-profile design for installations with limited available space.
Can the system be installed on existing generators?
Yes. BlueMAX™ 500 & 520-Series is available for both OEM generator packages and retrofit installations, providing flexible integration across a wide range of stationary natural gas engines.
Why choose BlueMAX™ 500 & 520?
BlueMAX™ 500 & 520-Series combines integrated OC and SCR technology, intelligent DEF dosing, low exhaust restriction, and flexible installation options to deliver reliable emissions control for stationary lean-burn natural gas power generation.
Still have questions?
Our emissions control experts are here to help.
GET STARTED
Ready to Meet Your Emissions Requirements?
Work with NETT Technologies to select the right BlueMAX™ 500 or 520 emissions control solution for your stationary natural gas generator.
- Free application review with an emissions solutions expert
- Customized installation & maintenance manuals
- Standalone or integrated configurations available
- OEM and retrofit ready
READY TO SPEC YOUR SYSTEM?
Custom Installation? Not a Problem!
Tell us your engine, site, and compliance requirements. Our engineers will scope the right natural gas generator emission control device for your application.
DOWNLOADABLE DOCUMENTS
