Informe Uv

ESTUDIO DE FACTIBILIDAD PARA LA INSTALACIÓN
DE FILTRO FDMS


Product Specifications

True mass measurement,
conditioning system for theThermo
Scientific TEOM® series monitors

Thermo Scientific
8500 FDMS Filter Dynamics
Measurement System

Key Features
•

Accounts for nonvolatile and volatile
PM components with innovative selfreferencing methodology

•

Hourly massconcentration average
updated every six minutes

•

Scientifically validated – total mass
of aerosol chemical species

•

California Approved Sampler (CAS),
PM-2.5 and PM-10 regulations

The Thermo Scientific 8500 FDMS Filter
Dynamics Measurement System
accomplishes the challenging task of
accounting for both the volatile and
non-volatile components of particulate
matter (PM), andreporting the combination
as a mass concentration result. This is
done by measuring the volatile portion of
the sample independently from the total
incoming sample, and using this fraction in
calculating the PM mass concentration.
The sampling and measurement system of
the 8500 FDMS® is based upon a number
of successful technologies applied by
Thermo Scientific, including the true-massfilter-based TEOM® microbalance, a
diffusion drying system, and a selfreferencing technique to assess the volatile
component of ambient PM.

The FDMS 8500 system provides a new PM
measurement approach that offers the
ability to quantify the PM mass
concentration as it exists in ambient air.
The FDMS 8500 system takes into account
the dynamics of PM that have been
deposited on a samplecollection filter, and
how that material behaves over time. The
device is designed to provide high-quality,
representative PM mass concentration
readings for both short-term averages (one
hour) as well as 24-hour averages. The
system’s basic output consists of running
1-hour average mass concentration (in μg/
m³) of PM-10, PM-2.5 or PM-1 updated
every six minutes. The unit also computes
the basemass concentration and reference
mass concentration over the same
averaging times.

Product Specifications
To maintain optimal product performance, you need immediate access to experts worldwide, as well as priority status when your air quality
equipment needs repair or replacement. We offer comprehensive, flexible support solutions for all phases of the product life cycle. Throughpredictable, fixed-cost pricing, our services help protect the return on investment and total cost of ownership of your Thermo Scientific air quality
products.

Thermo Scientific FDMS 8500 Filter Dynamics Measurement System
Instrument Performance

Flow Control

Sample Conditioning System

Data Averaging and Output

Operating Range

Data Storage
Filter Media

Software and Documentation
DataOutput and Input
Dimensions & Power

Measurement Range: 0 to 5,000,000 μg/m³ (5 g/m³). (3 l/min, 1s, stable conditions)
Resolution: 0.1 μg/m³.
Precision: ±2.5 μg/m³ (1-hour avg), ±0.8 μg/m³ (24-hour avg).
Minimum Detectable Limit for Mass Measurement: 10 nanograms, 0.06 μg/m³ (1-hour ave).
Accuracy for Mass Measurement: ±0.75%.
Two mass flow controllers (0-5 and 0-20 l/min) with 1% offull-scale accuracy.
Active volumetric flow control of sample stream using ambient temperature and pressure sensors.
Mass concentration expressed either in standard or actual terms (user selectable).
FDMS dryer contains specially-designed Nafion® tubing inlet on the main flow to minimize potential for
particle loss. The dryer lowers the main flow relative humidity, and allows for mass transduceroperation at
5° C above the peak air monitoring station temperature. Purge Filter Conditioner contains a heat exchanger
that maintains the temperature of the main air flow and particle filter at 4° C. An integrated humidity
sensor that follows the SES dryer measures the main flow line humidity to determine the drying efficiency.
The system computes mass concentration information as mass...