HACP · Product brochure
HACP brochure
Measurement principles, applications, setup and technical specifications.
IN SITU CLOUD MONITORING
HACP
Hyper-Angular Cloud Polarimeter
Cloud water and droplet size—in real time, without sampling.
HACP introduces a new optical approach to measuring liquid water content (LWC) and droplet effective radius (reff). By observing clouds directly, without extracting a sample, it is designed to bring a new level of precision to these key cloud parameters.
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- Angular resolution
- Better than 0.1°
- Angular range
- 101.5°–168.5°
- Cloud parameters
- LWC & effective radius
MEASUREMENT & APPLICATIONS
Built for your research.
Applications
- Cloud liquid water content (LWC)
- Droplet effective radius (reff)
- In situ cloud observations
- Cloud-phase information and optical model validation
How it works
The sending unit directs a laser beam with a defined polarization state through ambient cloud particles. The receiving unit records the scattered light across a range of angles. Changes in polarization provide additional information about the particle ensemble.
Fine angular detail
Resolve scattering features with an angular resolution better than 0.1°.
Polarization information
Measure the six independent elements of the scattering phase matrix.
Non-contact operation
Observe cloud particle ensembles along an open optical measurement path.
INSTRUMENT DETAILS
Technical specifications.
Optical measurement
| Measurement | Angular scattering and polarization |
|---|---|
| Angular resolution | Better than 0.1° |
| Angular range | 101.5°–168.5° |
| Phase matrix | Six independent elements |
| Laser wavelength | 515 nm |
Deployment
| Installation | Indoor or outdoor |
|---|---|
| Operating temperature | −40 to +40 °C, with heating in operation |
| Operating humidity | 20–100% relative humidity |
| Enclosure protection | IP66 |
| Installation footprint | Approximately 5 m² |
| Installation altitude | Below 3000 m above sea level |
| Storage temperature | −25 to +55 °C |
| Storage humidity | Below 80%, non-condensing |
Light, brief precipitation is permitted. For heavy or prolonged precipitation and extreme weather, switch off and protect the instrument. Discuss siting and environmental requirements with us.
READ FURTHER
Downloads & references.
Download PDFPDF · 17.7 MB
LET’S TALK SCIENCE
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Tell us about your application, platform or configuration requirements.