Tipping Bucket Rain Gauge Extended, 0.5mm w/Siphon

The Model 3515 Bucket Rain gauge w/Siphon is the recognized standard for measuring rainfall & precipitation in remote, unattended locations. Its primary feature is a 5 inch (127 mm), high-extended funnel catch to eliminate out splash loss that occurs with machined-rim gauges during heavy rainfall. The extended catch also decreases splash loss due to moderate or high cross winds.
This new design closely resembles NOAA’s T-200B all-weather precipitation gauge’s catchment & data acquisition features.

The unit consists of a collector funnel, a stainless steel filter screen and a tipping bucket mechanism. The bucket tips when precipitation of 0.1 mm, 0.2 mm, 0.5mm, 1.0 mm or 0.01 inch has been collected. Each tip, marked by a reed switch closure, can be recorded by a datalogger/DCP & transmitted by satellite, cellular or radio.

The Tipping Bucket performs a wide range of rainfall measurements. The receiver (orifice) is 8.00” (200 mm) in diameter. The Tipping Bucket measures each 0.1 mm, 0.2 mm, 0.5mm, 1.0 mm or 0.01 inch of precipitation. It includes a siphon that allows rain to flow at a steady rate to the tipping bucket mechanism regardless of rainfall intensity. Due to its siphon design, typical heavy rainfall bucket errors become constant thus allowing the calibration process to minimize them. This built-in compensation process results in more accurate measurements for a range of 0 -27” (700 mm) per hour enabling the Tipping Bucket to record high accuracies over a broad range of rainfall intensities. The siphon can be dismantled for routine servicing.

Supplied complete with a reed switch assembly, anodized and powder coated aluminum funnel, powder coated aluminum cover and base with mounting holes, Jewel Sapphire Bearings with stainless steel shafts, injection molded ABS chrome bucket, stainless steel fasteners and leaf sieve, with 10 meters of 2 conductor connecting cable.

Product Features 

• World Standard 200 mm, 8.0 inch catch
• Bucket Sizes 0.2 mm, 0.5 mm, 1.0 mm, 0.01 inch or 0.1 mm
• Extended catch for high intensity accuracy
• Integrated siphon mechanism
• Bubble Level in base
• Single reed switch output signal

SPECIFICATIONS 

• Receiver:
• 200 mm ±0.3 diameter with machined aluminum 8 inch rim, Powder Coated  
• Sensitivity:
• One tip at 0.1, 0.2, 0.5, 1.0 mm or 0.01 inch
• Measuring Range:
• 0-700 mm/hr, 0-27 inches/hr
• Measuring Intensity Accuracy:
• ±2% @ 0 -250 mm/hr - 0 to 10 inch/hr
• ±3% @ 250 - 500 mm/hr - 10 to 20 inch/hr
• ±5% @ 500 - 700 mm/hr - 20 to 27 inch/hr
• Sensor:
• Tipping bucket with siphon
• Siphon:
• 0.4 mm (12ml) capacity brass & non-hydroscopic polymer with leaf/insect screen filter
• Bucket:
• Injection molded non-hydroscopic ABS, UV stabilized, chrome plated & balanced
• Bearings:
• Sapphire jeweled bearings with hard stainless steel shaft (pivots)
• Bulls Eye Bubble Level:
• Plus threaded drain holes
• Contact System:
• Reed switch, potted in material
• Contact Capacity:
• 24 V (0.5 amp max) - 12VDC Standard Operating
• Contact Time:
• 0.1 second
• Temperature:
• -20 to + 70 Degrees C
• Humidity:
• 0 to 100%
• Height:
• 18 inches (457 mm)
• Weight:
• 8.0 lb. (3.6 kg)

ORDERING INFORMATION

• 1001-205 Tip Bucket, Std, Ext, 0.1mm,wSiphon
• 1001-201 Tip Bucket, Std, Ext, 0.2mm,wSiphon
• 1001-202 Tip Bucket, Std, Ext, 0.5mm,wSiphon
• 1001-203 Tip Bucket, Std, Ext, 1.0mm,wSiphon
• 1001-204 Tip Bucket, Std, Ext, 0.01in,wSiphon