Thermo Model 797 In-Stack Dilution Probe & Panel

The in-stack EPM Model 797 dilution probe and Cherokee Dilution Panel are ideal for conducting gaseous pollutant sampling from sources where moisture content or pollutant concentrations are too high for accurate measurement. Also, dilution should be used whenever highly water soluble pollutants are measured on a dry, extractive basis (ie HCl via gas filter correlation). The system effectively reduces water vapor to low enough levels that a heated sample line is unnecessary.

The arrangement includes:
- Dilution Probe Assembly
- 100-ft Dilution Umbilical, 4-tube Bundle
- Cherokee Dilution Panel
- (2) Glass Dilution Orifice and Graphite Ferrules

The Thermo Model 797 Dilution System performs four critical functions to prepare the sample from the stack, so that it can be measured accurately and precisely by the analyzer.  The system uses an air driven aspirator which extracts the sample from the stack.  it is then passed conseculatively through a coarse and fine particulate filter, a preselected glass or quartz critical orifice and diluted with the air from the aspirator.  This process has now reduced the dew point of the stack sample to below that of the ambient air.

Gas Connections	All Connections 1/4-inch (7 total)
Dilution Ratios	12:1 to 350:1 Using Various Orifice
Air or N2 Requirement	Clean and dry; 30 to 90 psi Delivery Pressure; 8-12 lpm

For availability and recommendations, please call us at 800.399.4236 or email a Sales Engineer.
Or click on the RFQ link to submit project details.