HTabsOverviewThe BCPD measures cloud droplet size distributions, which are then used to derive the total number concentrations, liquid water content (LWC), median volume diameter (MVD), and effective diameter (ED). The BCPD’s non-intrusive optical housing allows use in a range of ground-based or airborne applications with no contamination from ice crystal shattering and no airflow distortion. Key Features Polarization feature Discriminate between ice and water particles with the BCPD’s polarization feature. For example, use the BCPD to detect when an aircraft encounters abnormally high concentrations of ice crystals. Aerodynamic design Minimize airflow disturbance and enable undisturbed particle measurement with the BCPD’s aerodynamic design. Mount the BCPD easily on aircraft, even when space is at a premium. Comprehensive, customizable output data Monitor multiple output variables like total particles, average transit time, over-range particles, and various probe health indicators. Get particle classification by size in histogram form. Dynamic thresholding feature Depend on automatic correction for drifts in polarization signals through the dynamic thresholding feature. Advanced user control Program the instrument's sample rate and size bin thresholds. Plus, get size distributions accumulated in the probe, with serial transmission to a computer via any standard RS-422 communications port. BCPD Brochure.pdf SpecificationSpecification: Parameter Specification Measured Parameters Single-particle light scattering: S polarized back-scattered light P polarized back-scattered light Auxiliary Parameters Temperature Pressure Derived Parameters Particle diameter Particle number concentration Liquid water content (LWC) Effective Diameter (ED) Median volume diameter (MVD) Particle Size Range 2 - 50 µm Number of Size Bins 10, 20, 30, or 40 (configured at time of purchase) User-selected boundaries Number of Concentration Range 0 - 1,000 particles/cm3 Air Speed Range 10 - 250 m/sec Sampling Frequency Selectable, .04 sec to 20 sec Light Collection Angles Center-line: 155°, +/- 18.5° Laser 658 nm Laser Power 85 mW or less Data System Interface RS-422 serial interface Environmental Operating Conditions Temperature: -40° to 40°C Relative Humidity: 0 - 100%, non-condensing Altitude: 0 - 50,000 feet (0 - 15,000 meters) Weight 1.4 kg for head and window interface 0.9 kg for electronics box Probe Dimensions Probe alone: 14.7 cm L x 13.3 cm W x 6.4 cm H With window interface: 16.7 cm L x 13.3 W x 8.3 cm H Electronic Box Dimensions 21.6 L cm x 12 cm W x 8.2 cm H Power Requirements 28 VDC, 5 A for system and heaters Further InfoDocuments: BCPD Brochure.pdf
