SOx NOx Gas Analyzer

A SOx & NOx Gas Analyzer is a precision instrument designed to measure the concentration of Sulfur Oxides (SO, SO) and Nitrogen Oxides (NO, NO, NOx) in flue gases emitted from industrial processes. These analyzers play a crucial role in continuous emission monitoring systems (CEMS) and help industries comply with pollution control regulations like CPCB, EPA, or local government norms.

These gases are key contributors to acid rain, smog, and respiratory problems, making their monitoring essential for environmental protection and workplace safety.

SO: Measured using Non-Dispersive Ultraviolet (NDUV) or NDIR

NOx: Measured using Chemiluminescence, Electrochemical, or NDIR

NO & NO: Sometimes measured separately or calculated as total NOx

Real-time, continuous monitoring
Dual or multi-gas configuration
High accuracy and low detection limits
Inbuilt sample conditioning system (probe, filter, cooler)
Analog & Digital outputs (4-20 mA, RS-485, Modbus)
Touchscreen display with alarm settings
Compliance with international emission norms (CPCB, EPA, ISO)

Typical Applications:

Power Plants (coal, gas, diesel)
Cement & Steel Industries
Petrochemical & Refineries
Waste Incinerators
Boilers & Furnaces
Stack Emission Monitoring Systems

SO is sulfur dioxide (mainly formed during fuel combustion), while SO is sulfur trioxide, usually found in smaller amounts and more reactive. Most analyzers focus on SO due to its higher concentration.

NOx refers to nitrogen oxides mainly NO (Nitric Oxide) and NO (Nitrogen Dioxide). They are harmful pollutants formed during high-temperature combustion.

NOx is typically measured by chemiluminescence (for high accuracy) or NDIR (for cost-effectiveness). Some systems use electrochemical sensors for portable setups.