A precision instrument for the measurement of black carbon in the atmosphere

The Model 5012 MAAP measures the aerosol-related absorption of light and the corresponding atmospheric black carbon mass concentration. Continuous data is provided by a multiple detector setup to simultaneously measure the transmitted and the scattered light from a particle-loaded filter. Typical applications include determining ambient elemental carbon for health-related effects and aerosol light absorption for visibility monitoring (regional haze) and climate reasearch.

Product Details

This black carbon monitoring instrument has been especially designed to carry out continuous emission measurements of black carbon. The portion of elemental carbon to be found in ambient air is determined by applying a method which is based on a combination of the reflectometer method at certain scattering angles and the transmission. The Model 5012 serves to continuously measure and monitor the particulate pollutant species black carbon expressed as mass concentration (ng/m³) in a continuous operating environment.

Key Features

Measuring principle used for continuous measurements:

• Multi-angle photometer, combination of the reflectometer method a certain scattering angles and the transmission
• Functionality check possible via serial interface
• Status messages
• Permanent, automatic error monitoring, the detailed error status is entered into a log-book
• Storage of half-hourly mean values over an entire year (optional)
• Reference made to operating flow rate at the sampling head or to standard flow rate
• Two serial interfaces ensuring a measuring network and printer or maintenance PC to be simultaneously connected to the monitor on site
• Compact, rugged mechanical components; 19”-rack


Specifications

Method	Multi angle photometer. Compensation of multi scattering effects. Automatic Continuous Operation
Limit of Detection	2 min base: <100 ng/m³ ; 10 min base: <50 ng/m³ ; 30 min base: <20 ng/m³
Filter Change	at 20 % transmission (ca. 30µg)
Active Measurement Time	>98%
Air Flow Regulation	deviation < 1% (PID type)
Filter Tape	Glass fiber type GF 10. Manufacturer: Schleicher & Schüll. Length: ca 40m; width: 40mm; effectivity: 99.98%
Data Output	Serial interface RS232; analog output: 0/4 mA or 0V .. 10V
Data Memory	18560 concentration values; log book with 1632 entries; 385 daily averages
Operating Temperature	-10°C .. 40°C
Power Connection	110V / 220V; central unit ca. 30 W; pump ca. 100 W
Pump Type	RPM regulated rotary vane pump with carbon dry rotor
Size	Width: 483mm; depth: 320 to 400mm; height: 7 HE (315mm)
Weight	ca.25 kg