Typical Diagnostic Uses of the PGA3500

The PGA3500 Analyzer measures CO, CO₂, and CH₄. Carbon potential can be calculated using furnace temperature and the relationship of these 3-gases.  Oxygen probe real-time measurement of the furnace atmosphere can be verified by 3-Gas analysis.  In addition to being an excellent diagnostic device, the PGA3500 will provide the necessary data to fine-tune your atmosphere control.

 

Endothermic Generator Diagnostics

 

The effectiveness of the catalyst is measured by the CH₄ content. Less than 0.5% is an indication of properly functioning catalyst. Higher concentrations indicate the necessity for either conditioning or replacement.

Measuring the level of CO in the carrier gas allows correction of the % carbon reading at the furnace.

 

Heat Treat Furnaces – Conventional Endo Gas

 

Furnace atmosphere carbon potential (% C) can be verified with the PGA3500.

Measuring carbon monoxide (CO) and carbon dioxide (CO₂) can show possible problems (i.e. water leaks, air leaks, and radiant tube leaks).

The PGA3500 measures the free methane (CH₄) in the furnace atmosphere.

 

Heat Treat Furnaces – Nitrogen/Methanol Endo Gas

 

The carbon monoxide (CO) level in the furnace atmosphere indicates the effectiveness of the cracking of the methanol. Equilibrium of the methanol cracking reaction (CH₃OH à CO + 2H₂) is temperature dependent.

 

Heat Treat – Oxygen Sensor Control

 

Periodic verification of the performance of oxygen probes.

COF and PFC adjustments can be made (based on the calculations of the 3 gases) to provide more precise control of the carbon in the furnace atmosphere.

 

Combustion – Burner Balancing

 

Measures excess O₂ in the flue gas to allow burner adjustments.