Ambient Meteorological · Precipitation
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.
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
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 Diameter | Standard Calibration | Optional Calibration | |
|---|---|---|---|---|
| PRECIPITATION GAUGES | ||||
| 370 | 8 inch (20.3 cm) | 0.01 inch | 0.2 or 0.25 mm | |
| 372 | 8 inch (20.3 cm) | 0.5 mm | N/A | |
| 380 | 12 inch (30.5 cm) | 0.01 inch | 0.2 or 0.25 mm | |
| 382 | 12 inch (30.5 cm) | 0.1 mm | N/A | |
| Model # | Funnel Diameter | Standard Calibration | Optional Calibration | Power Requirement |
| PRECIPITATION & SNOW GAUGES | ||||
| 370 | 8 inch (20.3 cm) | 0.01 inch | 0.2 or 0.25 mm | 115 VAC, 315 watts |
| 372 | 8 inch (20.3 cm) | 0.01 inch | 0.2 or 0.25 mm | 220 VAC, 315 watts |
| 380 | 8 inch (20.3 cm) | 0.5 mm | N/A | 115 VAC, 315 watts |
| 382 | 8 inch (20.3 cm) | 0.5 mm | N/A | 220 VAC, 315 watts |
| 370 | 12 inch (30.5 cm) | 0.01 inch | 0.2 or 0.25 mm | 115 VAC, 315 watts |
| 372 | 12 inch (30.5 cm) | 0.01 inch | 0.2 or 0.25 mm | 220 VAC, 315 watts |
| 380 | 12 inch (30.5 cm) | 0.1 mm | N/A | 115 VAC, 315 watts |
| 382 | 12 inch (30.5 cm) | 0.1 mm | N/A | 220 VAC, 315 watts |
| 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 | |||
| Switch | Reed switch rated at 10 mA, 28 VDC (maximum) | |||
| Finish | White gloss textured powder coat and clear anodized aluminum | |||
| Height | 8 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
Specifications are subject to change. Contact Belfort Instrument to confirm current specifications.
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