Isco 674 Rain Gauge
Pine Environmental

Isco 674 Rain Gauge

Pine Item #54664

The Isco 674 Rain Gauge is a precision instrument that uses a tipping bucket design for accurate rainfall measurement. It has an 8 inch diameter orifice and is factory-calibrated to tip at either 0.01 inch or 0.1 mm of rainfall. With a 674 Rain Gauge connected, an Isco flow meter or sampler will:

"¢ Plot graphs and print reports of rainfall data on the flow meter's built-in printer
"¢ Store rainfall data in internal memory for retrieval and analysis with Isco Flowlink ® Software
"¢ Activate sampling based on rainfall

Standard Features

  • Three-point leveling and integral bubble level make it easy to align the rain gauge for maximum accuracy.
  • Sapphire jewel bearings on the tipping bucket are spring-loaded to prevent damage to the bearings and ensure consistent operation over a wide temperature range.
  • Screens cover all openings to prevent leaves, insects, and other debris from clogging the gauge.
  • Included 50-foot cable connects directly to compatible Isco flow meters and samplers.


  • Stormwater runoff monitoring
  • Inflow and infiltration studies
  • Combined sewer overflow monitoring
  • cMOM and CSO/SSO programs (Sewer overflow monitoring and prevention)
  • General rainfall measurement

Options and Accessories

  • English units - tips every 0.01 in. of rainfall
  • Metric units - tips every 0.1 mm of rainfall


Type: Tipping bucket
Compatible equipment: Isco 6700, 6712, and Avalanche Samplers, 4200 Series Flow Meters, 4100 Series Flow Loggers
Connect cable: 50 ft. (15.2 m), 2 conductor with 4-pin plug
Bearings: Spring-loaded sapphire jewel
Orifice Diameter: 8 in. (20 cm)
Sensitivity: English - 0.01 inch; Metric 0.1 mm
Accuracy: English -  ±1% at 2 in/hour; +3%/-4% up to 5 in/hour. Metric -  ±1.5% at 5 cm/hour; +3.5%/-9% up to 13 cm/hour
Capacity: English - 22 inches/hour; Metric - 38 cm/hour
Output Signal: Contact closure of at least 50 millisecond duration
Switch Type: Normally open, encapsulated reed; 10 watts, 200V DC, 0.5 A maximum
Height: 13 in. (33 cm)
Diameter: 9.5 in. (24 cm) (at mounting base)
Weight: 10 lbs. (4.5 kg)
Operating Temperature: 32 ° to 140 °F (0 ° to 60 °C)
Storage Temperature: -40 ° to 140 °F (-40 ° to 60 °C)
Quantity must be 1 or more
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