YSI WaterLOG H-340SDI Rain Gauge

The model H-3401 is a 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. The H-3401 series is available in .01 in, 0.1 mm and 0.2 mm resolution ranges.

  • Features
  • Specifications

The SDI-12 Tipping Bucket Rain Gauge (H-3401) maintains accuracy at increased rates of rainfall ranging from 635 millimeter (0-25 inches) per hour, has two removable stainless steel funnel screens and a rust-proof enclosure.

  • 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
Accuracy 4 Single Ended
Resolution 20-Bit Resolution
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)

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 housing

Powder painted

Spun aluminum
*Includes screened secondary funnel

Cast aluminum

Powder painted

Anodized aluminum internal parts

Stainless steel screws

Tipping bucket with magnetic reed switch sensor

Three anodized aluminum external mounting feet

Three stainless steel leveling screws and bulls eye level, internal

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

Power Requirements Voltage Input:
10.0 to 16.0 volts DC
Standby: 180 μA typical

Raining: 2.8 mA for 60 seconds
Communicationg: 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)
General Specifications
Electronic Operating Temperature -40 ° to +60 ° C
Storage Temperature -50 ° to +70 ° C
Mechanical Operating Temperature 0 ° to +50 ° C
Warranty The WaterLOG® H-3401 is warranted against defects in materials and workmanship for twenty-four months from date of shipment.

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