In-Situ Dilution Probe - DP-049 Series
Overview
The ASI Model DP-049 Series In-Situ Dilution Probe is designed to function as a sample conditioning and transport system, the Dilution Probe performs four critical functions to prepare the sample from the stack (duct or process) so that it can be measured accurately and precisely by the analyzer (typically an "ambient level" analyzer). The system uses an air driven aspirator which extracts a continuous and precise low-flow sample from the source gas stream. It is then passed consecutively through coarse and fine particulate filters, a preselected glass or metal orifice, and diluted with the motive air within the probe aspirator. This process has now reduced the dew point of the source gas sample to below that of the ambient air. It prepared the often warm, wet, sticky and particulate laden sample, so that it can be transported (at a positive pressure) via an unheated umbilical line to the analyzer, up to 300FT (100M) away.
Key Features
- Direct Replacement for the older EPM Environmental Dilution Probe 797 Series
- Reach a minimum vacuum of .47 bar (13.87"Hg) at a low 2.5 bar (36.25psi) dilution air pressure
- Maintain vacuum levels above the .47 bar through dilution air pressures to 6 bar
- Diluted sample flow rates in range of 4.5 to 12 l/min (dependent on dilution air pressure setting).
- Operating temperatures to 750°F (400°C), or High Temp versions to 1000°F (540°C)
- Filters particulate using both coarse and fine filtering methods
- Reduces moisture content to levels below the dew point
- Dilutes sample to more accurately measured concentrations (dilution ratios from 12:1 to 350:1)
- Precise low-flow sample flow rates (standard orifice sizes from 20ml/min to 500ml/min)
- Wetted parts from corrosion resistant Inconel-600®
- Many critical orifice types available (Standard Glass, Quartz, Monel-400, or Stainless-316)
