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
Performance
Accuracy 4 Single Ended
Resolution 20-Bit Resolution
Mechanical/Power
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 housing

Powder painted

Funnel:
Spun aluminum
*Includes screened secondary funnel

Base:
Cast aluminum

Powder painted

Internal:
Anodized aluminum internal parts

Stainless steel screws

Sensor:
Tipping bucket with magnetic reed switch sensor

Mounting:
Three anodized aluminum external mounting feet

Leveling:
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

Current:
Raining: 2.8 mA for 60 seconds
Communicationg: 6 mA

Connection Screw Clamp, for #12-22 AWG wire
Communication
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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