	SG-400	SG-410	SG-420	SG-430
Precipitation Type	Liquid, solid, mixed	Liquid, solid, mixed	Liquid, solid, mixed	Liquid, solid, mixed
Inlet Diameter/Area	8-inch inlet diameter/324 cm² inlet area (National Weather Service)	8-inch inlet diameter/324 cm² inlet area (National Weather Service)	6.3-inch inlet diameter/200 cm² inlet area (World Meteorological Organization)	6.3-inch inlet diameter/200 cm² inlet area (World Meteorological Organization)
Precipitation Capacity	900 mm / 35 in (NWS inlet)	900 mm / 35 in (NWS inlet)	1500 mm / 59 in (WMO inlet)	1500 mm / 59 in (WMO inlet)
Heater	No Heater	Heater	No Heater	Heater
Bucket Capacity	30 L / 8 gal	30 L / 8 gal	30 L / 8 gal	30 L / 8 gal
Rate (Intensity) Range	0 to 3000 mm hour^-1 (0 to 50 mm min^-1)	0 to 3000 mm hour^-1 (0 to 50 mm min^-1)	0 to 3000 mm hour^-1 (0 to 50 mm min^-1)	0 to 3000 mm hour^-1 (0 to 50 mm min^-1)
Rate (Intensity) Threshold (1 min data)	6 mm hour^-1 (0.1 mm min^-1)	6 mm hour^-1 (0.1 mm min^-1)	6 mm hour^-1 (0.1 mm min^-1)	6 mm hour^-1 (0.1 mm min^-1)
Calibration Accuracy (for Cumulative Amount)	0.1 mm < 5 mm, 1 % for > 5 mm	0.1 mm < 5 mm, 1 % for > 5 mm	0.1 mm < 5 mm, 1 % for > 5 mm	0.1 mm < 5 mm, 1 % for > 5 mm
Calibration Accuracy (for Rate/Intensity)	5 % for > 2 mm hr^-1	5 % for > 2 mm hr^-1	5 % for > 2 mm hr^-1	5 % for > 2 mm hr^-1
Measurement Resolution	0.01 mm	0.01 mm	0.01 mm	0.01 mm
Output Interval	1 min (unfiltered data); 1 to 30 min (filtered data)	1 min (unfiltered data); 1 to 30 min (filtered data)	1 min (unfiltered data); 1 to 30 min (filtered data)	1 min (unfiltered data); 1 to 30 min (filtered data)
Communication Interface	SDI-12 v 1.4	SDI-12 v 1.4	SDI-12 v 1.4	SDI-12 v 1.4
Temperature Sensitivity	± 0.01 mm C^-1	± 0.01 mm C^-1	± 0.01 mm C^-1	± 0.01 mm C^-1
Long-term Drift (non-stability)	Less than 0.5 % yr^-1	Less than 0.5 % yr^-1	Less than 0.5 % yr^-1	Less than 0.5 % yr^-1
Non-linearity	Less than 0.1 mm	Less than 0.2 mm	Less than 0.1 mm	Less than 0.2 mm
Transducer	Stainless steel strain-gauge bridge load cell	Stainless steel strain-gauge bridge load cell	Stainless steel strain-gauge bridge load cell	Stainless steel strain-gauge bridge load cell
Voltage Input	5.5 to 26 V DC	5.5 to 26 V DC	5.5 to 26 V DC	5.5 to 26 V DC
Current Draw	20 mA	20 mA	20 mA	20 mA
Power Requirement	240 mW at 12 V DC	240 mW at 12 V DC	240 mW at 12 V DC	240 mW at 12 V DC
Operating Environment	-20 to 60 C; 0 to 100 % relative humidity	-20 to 60 C; 0 to 100 % relative humidity	-20 to 60 C; 0 to 100 % relative humidity	-20 to 60 C; 0 to 100 % relative humidity
IP Rating	IP67 (load cell and circuitry)	IP67 (load cell and circuitry)	IP67 (load cell and circuitry)	IP67 (load cell and circuitry)
Dimensions	38 cm diameter, 80 cm height	38 cm diameter, 80 cm height	38 cm diameter, 80 cm height	38 cm diameter, 80 cm height
Mass	12 kg (empty bucket)	12 kg (empty bucket)	12 kg (empty bucket)	12 kg (empty bucket)
Cable	5 m of three conductor wire, M8 connector (IP67)	5 m of three conductor wire, M8 connector (IP67)	5 m of three conductor wire, M8 connector (IP67)	5 m of three conductor wire, M8 connector (IP67)
Mounting	Holes for 15.24 cm wood post; Adapter for 10.16 cm pipe	Holes for 15.24 cm wood post; Adapter for 10.16 cm pipe	Holes for 15.24 cm wood post; Adapter for 10.16 cm pipe	Holes for 15.24 cm wood post; Adapter for 10.16 cm pipe
Inlet Heater Voltage Requirement	-	24 V DC	-	24 V DC
Inlet Heater Current Draw	-	2.1 A	-	2.1 A
Inlet Heater Power Requirement	-	50 W (maximum)	-	50 W (maximum)
Warranty	4 years against defects in materials and workmanship	4 years against defects in materials and workmanship	4 years against defects in materials and workmanship	4 years against defects in materials and workmanship

Precipitation Type

Liquid, solid, mixed

Inlet Diameter/Area

8-inch inlet diameter/324 cm² inlet area (National Weather Service)

6.3-inch inlet diameter/200 cm² inlet area (World Meteorological Organization)

Precipitation Capacity

900 mm / 35 in (NWS inlet)

1500 mm / 59 in (WMO inlet)

Heater

No Heater

Heater

No Heater