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370-380 Series Precipitation Gauge

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Features

  • Self-emptying, dual chambered tipping bucket
  • Jeweled bearings reduce wear and friction
  • Funnel screen system prevents debris from clogging gauge
  • Stainless steel, Teflon coated bucket
  • Corrosion resistant materials throughout
  • Bubble level & adjustable feet assure proper mounting
  • Optional heating elements for frozen conditions

370-380 Series Precipitation Gauge

The 370-380 Series all-metal precipitation gauges measure rain and/or snow in all environments using a tipping bucket mechanism. The economical tipping bucket design allows accurate, repeatable measurements, requiring no regular maintenance. Each model in the 370-380 Series is optimized to meet particular site and sampling requirements and exceeds EPA specifications.

Operation

When a precise amount of precipitation is collected in one side of the bucket, gravity tips the assembly and activates a reed switch. A momentary electrical contact closure is provided for each increment of rainfall. The sample is discharged through the base of the gauge. The optional heating elements are thermostatically controlled to melt snow and ice and avoid evaporative loss.

Product Specifications

Model #Funnel DiameterStandard CalibrationOptional Calibration
PRECIPITATION GAUGES
3708 inch (20.3 cm)0.01 inch0.2 or 0.25 mm
3728 inch (20.3 cm)0.5 mmN/A
38012 inch (30.5 cm)0.01 inch0.2 or 0.25 mm
38212 inch (30.5 cm)0.1 mm N/A
Model #Funnel DiameterStandard CalibrationOptional CalibrationPower Requirement
PRECIPITATION & SNOW GAUGES
3708 inch (20.3 cm)0.01 inch0.2 or 0.25 mm115 VAC, 315 watts
3728 inch (20.3 cm)0.01 inch0.2 or 0.25 mm220 VAC, 315 watts
3808 inch (20.3 cm)0.5 mm N/A115 VAC, 315 watts
3828 inch (20.3 cm)0.5 mm N/A220 VAC, 315 watts
37012 inch (30.5 cm)0.01 inch0.2 or 0.25 mm115 VAC, 315 watts
37212 inch (30.5 cm)0.01 inch0.2 or 0.25 mm220 VAC, 315 watts
38012 inch (30.5 cm)0.1 mm N/A115 VAC, 315 watts
38212 inch (30.5 cm)0.1 mm N/A220 VAC, 315 watts

SpecDetails
Common Characteristics to all 370-380 Series Gauges
Operating Temp.58°F to 122°F (-50°C to +50°C)
Accuracy±0.5% at 0.5 in/hr, ±1% at 1-3 in/hr
SwitchReed switch rated at 10 mA, 28 VDC (maximum)
FinishWhite gloss textured powder coat and clear anodized aluminum

Height8 inch
10 inch
18 inch (46cm)
20.5 inch (52 cm)
Weight
(not including cabling)
8 inch Precip.
12 inch Precip.
8 inch Precip./Snow
12 inch Precip./Snow
6 lbs (2.7 kg)
7.5 lbs (3.4 kg)
6.5 lbs (3 kg)
11.5 lbs (5.2 kg)

Heaters

  • Funnel: 240 watts, composite with built-in thermostat
  • Base: 75 watts, composite with built-in thermostat
  • Thermostat Set Point: Funnel and base heater 40°F (4.4°C)

Accessories

  • PN 820440 Wind Screen: The improved Alter-design screen is constructed of 32 free-swinging leaves, greatly improving the accuracy of the catchment by reducing local turbulence.

Cable

  • PN 1566: Signal Cable Assembly; specify length in feet or meters
  • PN 2517: Power Cable Assembly; specify length in feet or meters

Ordering Information

  • Specify model number, calibration factor, cable length(s), and accessories