RPG Radiometer Physics GmbH

- Model HATPRO - Humidity and Temperature Profiler

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The HATPRO instrument is a stand-alone system for automated weather-station use under nearly all environmental conditions. Full atmospheric profiles are derived, retrieved data as well as raw data are stored. A variety of retrieval algorithms (custom designed or global standard algorithms) can be selected.

Frequencies:
Two bands, 22-31 GHz (7 channel filter bank humidity profiler and LWP radiometer) and 51-58 GHz (7 channel filter bank temperature profiler)
Retrieved data types:
  • Vertical profiles of atmospheric temperature
  • vertical profile of atmospheric humidty (relative and absolute humidity)
  • Liquid Water path (LWP)
  • Integrated Water Vapor (IWV)
  • wet delay
  • dry delay
  • stability indices

  • Optical resolution: 3.5° (2.5° HPBW at 22 (51) GHz
  • Radiometric resolution: 0.3 – 0.4 K RMS at 1.0 s integration time
  • High repetition rate: filter bank receiver produces one atmospheric profile per second
  • Absolut system stability: 1.0 K
  • Receiver and antenna thermal stabilization: < 0.02 K
  • Environmental temperature range for operation: –60 °C to +45 °C
  • Automatic rain-mitigation system: hydrophobic coating and strong blower for rain, heater module with 1.8 kW preventing formation of dew and fog condensation on radome
  • Integrated PC on-board
  • Full internal retrieval algorithm, retrieval data and raw data output
  • GPS clock
  • Additional external meteorological sensors: barometric pressure, humidity, temperature
  • Connection of optional IR-radiometer possible, software already designed for IR-data input (IR-radiometer is highly recommended for cloud base detection
  • Azimuth positioner option for full sky scanning (350 samples in less than 6 minutes)A
  • Fiber-optics data cable up to 1600 meters to controlling host PC
  • Customized retrieval software available
  • Frequency extension possible by tandem operation (adding a second radiometer unit, plug and play)
  • Stand alone operation
  • Data storage and backup on-board, power-failure safe-guard
  • Low maintenance (6 months intervall for absolute calibration using LN)
  • Power supply: 100 – 240 V AC (at 47 – 63 Hz)
  • Power consumption: 350 W turn-on power, 150 W under stabilized conditions
  • Weight: 60 kg
  • Dimensions: 63 × 40 × 105 cm (H × W × L without stand)
  • Low cost!

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