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Thermo Fisher Scientific
Chapter 1
Introduction
The Model 5030 Synchronized Hybrid Ambient Real-time Particulate
(SHARP) Monitor is a hybrid nephelometric/radiometric particulate mass
monitor capable of providing precise, one-minute, real-time measurements
with a superior detection limit. The SHARP Monitor measures the mass
concentration of ambient PM
SHARP monitor incorporates a high sensitivity light scattering photometer
whose output signal is continuously referenced to the time-averaged
measurements of an integral beta attenuation mass sensor. This system
achieves heretofore-unattained short-term precision and accuracy. The
SHARP monitor incorporates advanced firmware to optimize the
continuous mass calibration of the nephelometric signal, ensuring that the
measured mass concentration remains independent of changes in the
particle population being sampled.
The SHARP monitor incorporates a dynamic heating system (DHS)
designed to maintain the relative humidity of the air passing through the
filter tape of the radiometric stage well below the point at which the
collected particles accrete and retain liquid water. This DHS system
minimizes the internal temperature rise ensuring negligible loss of semi-
volatiles from the collected sample when the ambient relative humidity is
below the threshold to which the heater is controlling. As the ambient RH
increases above the threshold, the applied heating is optimized to maintain
the RH threshold above the beta attenuation filter tape. The purpose of
this heating system is specifically designed to force the continuous mass
monitor to agree with the gravimetric reference method and the relative
humidity conditions to which the reference filter samples are conditioned.
Furthermore, sufficient flexibility is provided within the firmware to
configure the heating conditions to satisfy global monitoring protocols.
The Model 5030 has the following features:
Multi-line alphanumeric display
●
Menu-driven firmware
●
Field programmable logging averages
●
Analog output
●
High sensitivity
●
, PM
, and PM
aerosol in real-time. The
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2.5
1.0
Model 5030 SHARP Monitor Instruction Manual
1-1
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