APM2000 Air Particulate Monitor
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The APM2000 air particulate monitor implements advanced Beta ray attenuation principles to measure and record airborne particulate concentration levels. It can directly measure the mass of particulates in air without the effects of ingredients, density, color, etc. Each hour, a small 14C (carbon-14) element emits a constant source of high-energy electrons (known as beta rays) through a spot of clean filter tape. These beta rays are detected and counted by a detector to determine a zero reading. Using stable 14C source with low density, low activity and long half-life (5700 years), there is no need for special protection. The 14C source is safe and reliable and does not cause any radioactive radiation hazard. This spot of tape is advanced to the sample nozzle, where a vacuum pump then pulls a measured and controlled amount of air through the filter tape, loading it with ambient dust. At the end of the hour this dirty spot, which is already placed between the beta source and the
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detector, causes an attenuation of the beta ray signal. The amount of attenuation is used to determine the mass of the particulate matter on the filter tape and the volumetric concentration of particulate matter in ambient air.
APM2000 Air Particulate Monitor Features:
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Highly accurate, reliable, and mechanically simple flow system
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Bench top or equipment rack mounting in mobile or stationary shelters
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U.S. EPA Federal Equivalent Method for PM10 and PM2.5 monitoring
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Sampling and measurement are done in the same spot
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Simple and reliable mechanical paper drive
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Advanced Smart Heater technology precisely controls sample relative humidity
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Internal memory provides historical data storage
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Data retrieval through RS-232 serial port
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Air Particulate Monitoring Relating Pages:
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The APM2000 air particulate monitor implements advanced Beta ray attenuation principles to measure and record airborne particulate concentration levels. It can directly measure the mass of particulates in air without the effects of ingredients, density, color, etc. Each hour, a small 14C (carbon-14) element emits a constant source of high-energy electrons (known as beta rays) through a spot of clean filter tape.
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The APM200 is a dual technology instrument that combines the unequalled real time measurement of light scatter with the accuracy standard of filter methods. The simple filter loading process testifies to the seamless blending of both technologies. Filters can be extracted and replaced in less than one minute and filter medium can be selected based on laboratory analysis. Particulate loading on the filter does not reduce performance due to the actual flow control protocol. Ambient temperature and pressure are measured and actual flow is calculated and controlled by the APM200 microprocessor independent of filter loading change. |
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The M-APM Air Particulate Monitor is a real time measuring device for the continuous monitoring of the smallest concentration of particles in the ambient air. The unit can accurately measure ambient particles in the atmosphere and is highly demanded in today's monitoring industry. M-APM is easy to operate and is a low cost instrument offering accurate, reliable, and repeatable measurement of ambient fine particulate matter. Since sampling is performed under true ambient conditions, semi-volatile organic compounds and nitrates are easily detected, avoiding errors. Size selective concentration measurements are made using PM10, PM 2.5 or PM 1 sampling inlets. |
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The APM Air Particulate Monitor series are real time measuring devices for the continuous monitoring of the smallest concentration of particles in the ambient air. These units can accurately measure ambient particles in the atmosphere and are highly demanded in today's monitoring industry. APM systems are easy to operate, accurate, reliable, and repeatable measurements of ambient fine particulate matter. Since sampling is performed under true ambient conditions, semi-volatile organic compounds and nitrates are easily detected, avoiding errors. Size selective concentration measurements can be made using PM10, PM2.5 or PM1 sampling inlets. |
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