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1.0 GENERAL DESCRIPTION <br /> The MIE personalDataRAMTM (for Personal Data-logging Real-time Aerosol <br /> Monitor) is a technologically advanced instrument designed to measure the <br /> concentration of airborne particulate matter (liquid or solid), providing direct and <br /> continuous readout as well as electronic recording of the information. <br /> The personalDataRAM is available in two versions: model pDR-1000AN and model <br /> pDR-1200. The model pDR-1000AN operates as a passive air sampler whereas the <br /> model pDR-1200 uses active air sampling.The user can convert from one to the <br /> other of these two versions by means of optional conversion kits offered by MIE, <br /> Inc. (see Sections 4.2 and 15.0 of this manual). <br /> The model pDR-1000AN samples passively (i.e.,without a pump) the air <br /> surrounding the monitor;air accesses freely the sensing chamber of the instrument <br /> by means of convection, diffusion,and adventitious air motion. The model pDR- <br /> 1200,on the other hand,requires a separate air driver (not included) such as a <br /> personal-type pump for its operation. <br /> In addition, the model pDR-1200 includes a particle size-selective inlet cyclone <br /> which permits size segregated measurements (i.e.,PM1o,PM2.5,respirable, etc.) as <br /> well as enables the user to perform aerodynamic particle sizing by varying the <br /> sampling flow rate. The model pDR-1200 incorporates, downstream of its <br /> photometric sensing stage, a standard 37-mm filter holder on which all sampled <br /> particles are collected for subsequent analysis or gravimetric referencing/calibration, <br /> if so desired. <br /> The personalDataRAM is the result of many years of field experience acquired with <br /> thousands of units of its well known predecessor,the MIE MINIRAM, and <br /> embodies many technological advances made possible by the latest electronic <br /> hardware and software. The personalDataRAM is also a worthy miniaturized <br /> companion to the MIE DataRAM, a recognized paragon of portable aerosol <br /> monitors. <br /> The personalDataRAM is a high sensitivity nephelometric (i.e. photometric) monitor <br /> whose light scattering sensing configuration has been optimized for the <br /> measurement of the respirable fraction of airborne dust,smoke, fumes and mists in <br /> industrial and other indoor environments. <br /> The personalDataRAM is an ultra-compact,rugged and totally self-contained <br /> instrument designed for hand-held, belt-worn,as well as unattended operation. It <br /> is powered either by its internal replaceable battery, or by an optional attachable <br /> rechargeable battery pack, or by an AC supply (included as standard accessory). <br /> For the model pDR-1200,power to an adjunct pump must be provided separately. <br /> 1 <br />