Electrical Low Pressure Impactor ELPI

The Electrical Low Pressure Impactor (ELPI) enables real-time particle size distribution and concentration measurement in the size range 30 nm to 10 ¾m. The range can be extended down to 7 nm with supplementary accessory. ELPI is suitable for any application where a wide size range and fast response times are required, including combustion aerosol studies, filter testing and general aerosol research. With ELPI it is possible to measure transient particle size distributions in a wide size range of particles and concentrations. An interactive user interface allows monitoring of total concentration and particle size distribution in several different modes. These modes even include parallel real-time size distribution and total concentration monitoring from several units at the same time in the same window. Since ELPI is a collecting device, it is possible to carry out subsequent chemical or gravimetric analysis on the collected, size classified samples. Operating Principle The gas sample containing the particles is first sampled through a unipolar corona charger. The charged particles then pass into a low pressure impactor with electrically isolated collection stages. A precisely known charge given to particles in the charger is measured in real time with the highly sensitive multichannel electrometers as the particles impact each impactor stage. The components are housed in a single compact unit. Standard RS-232 port is provided for communication with a laptop or PC. The impactor operating principle is based on particle size classification according to the aerodynamic diameter of the particles. Measured current signals are converted to (aerodynamic) size distribution using particle size dependent relations describing the properties of the charger and the impactor stages Applications ELPI is ideal for the analysis of unstable concentrations and size distributions or the evolution of size distributions because of its rapid response. The low pressure impactor is a very robust and easy to operate detector, which can be applied to rough environ-ments and also used for traditional gravimetric measurements. With ELPI the measured particles can be analysed later for mass or composition. ELPI´s fields of applications include: Combustion aerosol studies including vehicle exhaust measurements (Dilution system may be required) harmaceutical inhaler studies Particle charge measurements Filter grade efficiency measurement ndoor/outdoor air measurements Filter Stage ELPI filter stage (ELA-650) is used to extend the measurement range down to 7 nm. Filter stage is put under stage 1 f the impactor. mpactor stage 12 is removed to enable the use of the existing electrometer and thereby an easy upgrade. ilter stage upgrade is reversible, which means that the instrument can be used either with or without the filter stage. Sintered collection plates (IA-211) are designed to prevent common problems in impactor measurement: Impactor overloading and particle bounce. Instead of collecting the particles on a smooth collection substrate, the collection area is a sintered and porous oiled metal. Due to capillary forces, oil covers the collected particles and the impaction is always a particle to oil collision. Especially when measuring bouncy particles, such as NaCl or diesel particles after removal of volatile hydrocarbons, the sintered collection plate allows 10 to 20 times more collected material on a plate without a fear of bounce or blow-off. External Heating ELPI External Heating Assembly Set (ELA-504) allows the ELPI charger and impactor to be heated up to 200° C. It is designed to be used for measuring from hot and humid environments. The use of the External Heating Assembly Set requires some modifications to the standard ELPI unit, since the impactor and charger have to be removed from the ELPI housing. External Data Logging ELPIVOLT module (ELA-502) is an optically coupled, three channel connection unit for ELPI auxiliary channels. Every single channel can measure voltages, current loop signals o

Gas monitoring in stacks PULSI 200LR

In-stack gas monitoring The PULSI 200LR analyser continuously monitors up to six components directly in flue gas stream. The system consists of the sensor (Optical Head Unit) installed on the stack together with the automatic verification unit (Auto Zero Unit) and of the control unit (Analyzer Control Unit) or a PC with the instrument control software in the control room. Whenever a condensation may occur in the measured gases, the in–situ probe is heated. PULSI 200LR uses non-dispersive absorption of infrared light in the Enveloped Folded Beam. The IR-light is beamed into the measuring chamber filled with the process gas and the concentration of a specific gas is calculated basing on comparison of the signal obtained with different filters. The measuring chamber is placed in the stack and its walls are made of sintered stainless steel panels. This unique designed creates an envelope which is normally filled with measured gases entering through the sinter filter. For the calibration the chamber is filled with calibration gas or zero air without taking the instrument out of the stack which allows to fulfil the standard EN14181 (QAL 3). The instrument is certified according to the European standards (MCERTS) and accepted by the US EPA.

Hand-held 5-gas Detector

GrayWolf empowers mobile computers to Measure, Data-log and Document worker exposure levels and indoor air quality parameters. The DirectSense TOX is a powerful environmental data collection tool; intuitive and Easy-To-Use. Choose from SO2, NO2, NO, CO, H2S, HCN, EtO, Cl2, O2, O3, NH3, HCl, H2, SiH4, AsH3, PH3... and more 2 probes may be connected simultaneously to the mobile PCâ Snap-Shotâ instantaneous data capture and long-term trending Stores measured data along with text notes, graphic notes, audio notes... and more On-board measurement tips, industry guidelines and help files Add your own Word templates, application-related documents, customized instructions.... and more Calibration history and data file statistics auto-organized Up to 5 electrochemical gas sensors (plus ÂşF / ÂşC) per probe

High Level CO Analyzer

Gas filter correlation technology Ethernet connectivity for efficient remote access Enhanced user interface with one button programming and large display screen Flash memory for increased data storage and user downloadable software Enhanced electronics design optimizes Improved layout for easier accessibility to components Using gas filter correlation technology, the Model 48i-HL measures the amount of carbon monoxide in the sample. The Model 48i-HL is based on the principle that carbon monoxide (CO) absorbs infrared radiation at a wavelength of 4.6 microns. Because infrared absorption is a nonlinear measurement technique, it is necessary for the instrument electronics to transform the basic analyzer signal into a linear output. The Model 48i-HL uses an exact calibration curve to accurately linearize the instrument output over any range up to a concentration of 20,000 ppm. This state-of-the-art gas analyzer offers features such as an ethernet port as well as flash memory for increased data storage and field upgradability. Ethernet connectivity provides efficient remote access, allowing the user to download measurement information directly from the instrument without having to be on-site. You can easily program soft-keys to allow you to jump directly to frequently accessed functions, menus or screens. The larger interface screen can display measurement information and status while viewing menu and operational screens.

Indoor Air Quality Monitor

The IAQ Surveyor PRO includes a built-in micro-manometer to measure static pressure and differential pressure. The auto-zeroing pressure sensor allows for pollution pathways, HVAC systems, filter blockages and many other processes to be assessed for optimum performance. A type K thermocouple socket is also included for measurement with a variety of temperature probes: Air, immersion, penetration, surface and other specialized temperature probes. The Surveyor range has been designed with the user in mind. Minimal training is required to use the instruments as the intuitive menu system and display provide step-by-step guides for each operation that are updated when smart probes are plugged in. Both â snapshotâ and âtrendâ datalogging (over set time intervals) are included and WolfSense PC data analysis software allows data to be downloaded for detailed analysis and reporting