Available to rent, the Thermo Scientific In-situ Dilution Probes,EPM 300 Series are designed for wet basis measurement using dilution extractive technology. The critical functions performed by the Series EPM 300 prepare the sample from the stack so that it can be accurately and precisely measured by the analyzer. Using an air-driven aspirator, the system extracts the sample from the stack. The sample then passes consecutively through a coarse filter, a fine particulate filter, and a glass or quartz critical orifice. Lastly, the sample is diluted with air from the aspirator, creating positive pressure in the sample line as it prepares for transport to the analyzer. This dilution process reduces the dew point of the stack gas to below that of the ambient air. The processed sample can then be transported to the analyzer up to 300 feet via an unheated sample line. (Heated sample lines may be required for low temperature applications.) In addition, a sample pump is not required for sample lines less than 300 feet which helps to reduce costs and increase up-time. The critical orifice determines the flow rate with which the sample is extracted from the stack. The EPM 300 Series offers a selection of three different orifice materials, including 7 glass, 5 quartz or 5 Monel orifices, all of which permit easy exchange to accommodate different dilution ratio requirements. The process of sample dilution, as utilized by the EPM 300 Series, promotes the filter longevity and reduces maintenance. In-Situ calibration is easy with the EPM 300 Series Probe. The calibration gas is supplied via the umbilical cord to the stack mounted probe. Then, calibration gas enters the probe and is diluted at the same dilution ratio as the sample from the stack. The calibration line is also used to provide blow back air to the coarse filter for cleaning purposes.
The Environics® Series 6103 Ozone Transfer Standard / Multi-Gas Calibrator is a computer controlled, state-of-the-art instrument for dynamic calibration of ambient air analyzers. Automatically performs zero, precision, span and multi-point calibrations using NO, NO2, SO2, CO, 03, hydrocarbons and other gases of interest. The Series 6103 consists of a single chassis supporting 2 thermal mass flow controllers, an ozone generation module, photometer, glass output manifold, mixing chamber, a reaction chamber for gas phase titration, and control electronics. The mass flow controllers are calibrated to a NIST (National Institute of Standards and Technology) traceable primary standard. The internal ultra-violet (UV) based ozone generator is temperature controlled and includes a precision photo-optical feedback circuit to compensate for lamp aging effects providing stable ozone generation.
PM10/PM2.5 Method applies to the in-stack measurement of particulate matter equal to or less than an aerodynamic diameter of nominally 10 (PM10) and 2.5 (PM2.5 ) microns from stationary sources. The sampling train and operation is identical to Method 201A except that the PM2.5 cyclone is inserted between the PM cyclone and the filter. The PM10 cyclone collects particulate matter greater than PM10 while the PM2.5 collects PM less than PM10 and greater than PM2.5. The in-line filter collects PM less than PM2.5
The Model 701 is an excellent source of clean, dry air for dilution calibrators. It also may be used as a source of purge air for permeation tube ovens or burner air for FID analyzers. The regenerative, heatless dryer removes water and produces gas with a dewpoint of less than -20°C (up to 15 SLPM flow rate) independent of the inlet dewpoint and assists in the removal of other gases, greatly increasing the life of the chemical scrubbers. The basic Model 701 includes an oil and diaphram free pump plus scrubbers to remove SO2, NO, NO2, O3, NH3, and H2S. Optional high performance scrubbers are available to remove CO and Hydrocarbons. Inlet air is pulled into the pump and routed through a pre-cooler and water trap to remove moisture. The air then passes through the regenerative scrubber for final drying and then to the storage tank. Tank pressure is monitored and maintained at a preset level by cycling the pump automatically as needed, thereby extending both the pump and scrubber life. Outlet air then passes through a filter to assure a clean,
dry, analytical zero air supply. A microcontroller cycles the regenerative dryer and water trap valves preventing the pump from starting against full head pressure. The Model 701 is an ideal accessory to the Model T700 Series Dilution Calibrators or as a zero air source for analyzers.
The Thermo Scientific™ Model 146i Multi-Gas Calibrator supplies precise levels of ozone, carbon monoxide, non-methane hydrocarbons, sulfur dioxide, nitric oxide and nitrogen dioxide or other gases that a user may require. The gas levels are used to calibrate instruments that perform zero, precision and level 1 span checks, audits and multipoint measurements. The design of the Thermo Scientific Model 146i calibrator meets or exceeds all published U.S. EPA equirements for multipoint calibration, audit, Level 1 and 2
span and precision checks. Options include Gas Phase Titration, UV Photometer, and Permeation Oven. The mass flow controller, ozone generator, permeation tube oven, power supply, and solenoid valves are integrated into a single microprocessor controlled unit. This permits easy to use, menu driven software and a consistent set of operation screens for all calibration procedures. Additionally, the microprocessor can make many of the necessary calculations, thereby freeing the operator from having to make the calculations in
the fi eld or laboratory. If desired, the Model 146i calibrator can be operated remotely by a data logger to perform multipoint calibrations.