Teledyne Welding Consumables 7600 ユーザーズマニュアル

 

30 

In general, purging the analyzer is not required unless one of the 

following cases apply: 

•  A combustible gas component is contained in sample gas. 
•  Corrosive gas is contained in the atmospheric air at the 

installation site. 

•  The same gas as the sample gas component is contained in 

the atmospheric air at the installation site. 

In the above situations, the inside of analyzer should be purged 

with instrument air or N

2

. Use a purge flow rate of about 1 L/min. 

Use a filter to remove dust or mist from the purge gas. 

The sample gas pressure at the outlet should be atmospheric 

pressure.  

A typical system configuration with five component gas analysis 

for monito

ri

ng combustion exhaust gas 

fr

om boiler, refuse incinerator, 

etc. is shown in Figure 2-8. Contact Teledyne for specific application 
system configuration or further information. 

The system shown is comprised of: 

•  Model 7600—with dual measuring unit option and external 

zirconia oxygen sensor. 

•  Gas Extractor—with stainless steel filter of standard mesh 40 

μm equipped with integral heater. 

•  Mist Filter—to remove condensate, mist and dust from the 

sample before it enters the analyzer. 

•  Safety Drain Trap—with two compartments for positive and 

negative pressure. It monitors and adjusts the sample gas 
pressure. 

•  Gas Aspirator—to aspirate the sample gas. 
•  Electronic Gas Cooler—used to dry the sample gas to a dew 

point of approximately 2°C (35.6°F).