PIP

Precipitation Imaging Probe

The PIP is an optical spectrometer that measures the size and shape of particles from 100 µm to 6200 µm.

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Get specific measurements with range that is optimized for rain, snow, graupel, and hail particles.

Easily identify particle types by generating high-quality images via 64 photodetectors.

Reduce particle artifacts with open path format and anti-shatter tips.

Particle imaging

  • Shadow images of particles passing through a collimated laser beam are projected onto a linear array of 64 photodetectors to determine presence of particles.
  • Particle images are reconstructed from individual “slices,” where a slice is the state of the 64-element linear array at a given moment in time.
Parameter Specification
Technique

Optical Array Probe with 64 elements: 62 sizing elements, end diode rejection

Measured Particle Size Range

100 µm – 6.2 mm

Sample Area

260 mm x 6.2 mm for standard configuration (no Korolev tips)

Upper Concentration Range

100 particles/cm3

Air Speed Range

10 – 200 m/sec

Number of Size Bins

62

Sampling Frequency

Asynchronous, 0.1 – 10 Hz. 1-second sampling is typical

Laser

660 nm

Data System Interface:

Two channels: RS-422: 56,000 Baud Rate; High-Speed Serial: 4 x 106 Baud Rate (RS-422 only)

Weight

21 lbs./9.5 kg in DMT canister
10.5 lbs./4.8 kg outside of canister
25 lbs/11.4 kg with generic canister

Power Requirements

28VDC 3A for System Power
28VDC and 9A for Anti-ice Power
Optional AC voltages for system power and anti-ice heaters

Environmental Operating Conditions

Temperature: -40 °C to +40°C
RH: 0 – 100%, non-condensing
Altitude: 0 – 50,000 ft / 0 – 15 km

PADS software and laptop
Data Acquisition System

Droplet offers a three-year service plan to ensure that your PIP continues to deliver high-quality data. This plan locks costs upfront at the time of funding application and covers annual calibration, alignment, cleaning, wear-item replacement, calibration documentation, and shipping. Specific services provided for the PIP include:

  • Shipping to and from Droplet facility for service
  • Incoming instrument evaluation and health check
  • Optics cleaning and alignment
  • Temperature sensor calibration
  • O-ring replacement
  • Hardware replacement
  • Baseline voltages set and verified
  • Heater testing
  • Laser alignment
  • Calibration of instrument using spinning disk calibrator
  • Pitot calibration
  • Software, firmware, and antivirus update
  • Canister test
  • 100% unit functionality test
  • Calibration data, Calibration Report, Pitot Calibration, Certificate of Calibration provided

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Speak with one of our scientists or experts at Droplet Measurement Technologies today to discover solutions that can power your research.

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