HIAPER Aerosol Spectrometer Probe, Optical Particle Counter

Short Name or Variable Name:

HASP, OPC

HAIS Instrument:

Manufacturer or Builder:

TABS

Description

Measurements Provided:

Size distribution and concentration of aerosol particles ~0.1 to 5 micrometer diameter in 30 size bins, 10 sps

General Description:

****** The OPC is not currently requestable ******

The OPC has optics from a PCASP (original probe by PMS), electronics and data interface from DMT, and a flow system designed by RAF. Instrument is similar to DMT's PCASP-X2. It is a rack-mount instrument with internal air pump, and for sampling requires an inlet and tubing. Particle detection and sizing are based on laser light scattering, with pulse amplitude determined with two gain stages to cover the large dynamic range.

Measurement Characteristics:

Overall estimate of uncertainty:
Response time: Measures 10 size distributions per second.
Precision: 0.05 µm typical in smallest size channels
Other measurement characteristics (comments on signal/noise, bias limits, etc):
- Time delay and particle loss can occur between inlet and instrument due to sample tubing.

Calibration Methods:

Size calibration uses monodisperse particles such as PSL spheres or aerosols from DMA. Flow calibration uses Gilibrator.

Contacts

Lead Contact:

Mike Reeves

Alternate Contact:

Mike Reeves

Status/Plans

Current Location:

RAF

Operational Status:

Decommissioned ( no longer requestable )

Data

EOL Deployments:

PREDICT

Serial Numbers

Property Tag and/or Serial Number:

PPE18206

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Manufacturer or Builder:

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