AUTOMATIC RAIN GAUGE

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The precision tipping bucket rain gauge used in hydro-meteorological applications. Each gauge is calibrated at a rate of 10 millimeters (4 inches) per hour. Maintain accuracy at increased rates of rainfall ranging from 635 millimeters (0-25 inches) per hour, has two removable stainless steel funnel screens and a rust-proof enclosure.The Rain gauge is available in 0.01 in, 0.1 mm and 0.2 mm resolution ranges.

  • Two removable stainless steel funnel screens
  • Rust-proof, powder painted aluminum enclosure and cast base
  • Anodized aluminum or stainless steel internal parts
  • Magnetic reed bucket tip sensor
  • Internal leveling mechanism with ‘bulls-eye’ level
  • SDI-12 output
  • Built-in microprocessor automatically corrects errors

Specifications:

Performance Accuracy: ± 2%, 100 mm / hr (4 in per hr)

Resolution: 0.01 in, 0.1 mm and 0.2 mm

Size Funnel Aperture: 200 mm W (8 in)

Housing: 200 mm W x 300 mm L (8 in W x 12 in L)

Weight: 3.7 kg (8 lbs)

Screens:

  • Top: 20cm W 1/8 mesh (8 in)
  • Bottom: 3.81 cm T (1 1/2 in) tower 1/16 mesh
Material Housing: Extruded aluminum housingFunnel: Spun aluminum (Includes screened secondary funnel)

Base: Cast aluminum

Internal:

  • Anodized aluminum internal parts
  • Stainless steel screws

Sensor: Tipping bucket with magnetic reed switch sensor

Mounting: Three anodized aluminum external mounting feet

Exit Ports: Two screened drain tube fittings on bottom of casting

Power Requirements Voltage Input: 10.0 to 16.0 volts DC

Current:

  • Standby: 180μA typical
  • Raining: 2.8 mA for 60 seconds
  • Communicating: 6 mA
Connection Screw clamp, for #12-22 AWG wire
SDI-Output Baud Rate: 1200

Protocol: SDI-12, version 1.3

Output Voltage Levels:

  • Minimum high level: 3.5 volts
  • Maximum low level: 0.8 volts
  • Maximum cable length: 76 m (250 ft)

Response Time: 0.1-second measurement

SDI-12 Output Data Parameters 1 – Accumulated rainfall since last measurement
2 – Raw bucket count since last measurement
3 – Total accumulation
4 – Total daily accumulation (today)
5 – Total daily accumulation (yesterday)
Electronic Operating Temperature -40° to +60° C
Storage Temperature -50° to +70° C
Mechanical Operating Temperature 0° to +50° C