SDI-12 Rain Gauge (H-3401)

Whether you're new at rain measurement technology or know the systems like the back of your hand, you'll love the features of the SDI-12 Tipping Bucket Rain Gauge (H-3401)—such as the built-in microprocessor that automatically corrects errors. It also has a magnetic reed bucket tip sensor and an internal leveling mechanism with a 'bulls-eye' level to ensure high accuracy data. The Rain Gauge 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 ±3%,  0-635 mm/hr (0-25 in per hr)
Resolution 0.01 in, 0.1 mm and 0.2 mm
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.

Options & Accessories

H-3401-C

Funnel and barrel

H-3401-FScreen

Inner funnel fine screen

H-3401-Screen

Debris screen

Spotlight

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