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
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
Isco 6700, 6712, and Avalanche Samplers, 4200 Series Flow Meters, 4100 Series Flow Loggers
50 ft. (15.2 m), 2 conductor with 4-pin plug
Spring-loaded sapphire jewel
8 in. (20 cm)
English - 0.01 inch; Metric 0.1 mm
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
English – 22 inches/hour; Metric – 38 cm/hour
Contact closure of at least 50 millisecond duration
Normally open, encapsulated reed; 10 watts, 200V DC, 0.5 A maximum