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| Brand | RainWise |
|---|---|
| Origin | USA |
| Model | PG/H |
| Construction | Anodized aluminum housing, stainless steel components, low-surface-tension polymer tipping bucket |
| Heating | Integrated thermostatically controlled heater (activates below 1°C) |
| Switch Type | Reed switch |
| Output | Momentary closure pulse (< 0.1 s duration) |
| Resolution Options | 0.1 mm, 0.2 mm, or 0.25 mm per tip |
| Accuracy | ±0.5% at 12.5 mm/h rainfall rate |
| Dimensions | 21.9 cm diameter × 31.75 mm height |
| Compliance | Designed for continuous outdoor deployment in accordance with WMO Guide to Instruments and Methods of Observation (CIMO Guide), ISO 9060:2018 Class B performance expectations for precipitation measurement |
| Brand | Vaisala |
|---|---|
| Origin | Finland |
| Model | WXT531 |
| Measurement Principle | Ultrasonic Rain Detection (RAINCAP®) |
| Output | Cumulative Rainfall (mm), Rain Duration (s), Rain Intensity (mm/h) |
| Range | 0–200 mm/h |
| Resolution | 0.01 mm |
| Accuracy | ±5% (field-dependent) |
| Rain Duration Resolution | 10 s |
| Rain Intensity Calculation | Sliding 1-minute average, 10-s step |
| Operating Temperature | −52 to +60 °C |
| Storage Temperature | −60 to +70 °C |
| Enclosure Rating | IP65 (without mounting gland), IP66 (with mounting gland) |
| Power Supply | 6–24 VDC |
| Typical Current Consumption | 3 mA @ 12 VDC (default measurement interval) |
| Heating Option | 12–24 VDC / 12–17 VAC, 0.8 A @ 12 VDC |
| Digital Interfaces | SDI-12 v1.3, RS-232, RS-485, RS-422 |
| Communication Protocols | ASCII Polling/Automatic Mode, NMEA 0183 v3.0 |
| Analog Outputs | 4–20 mA (optional, configurable per parameter) |
| Compliance | IEC 60945 (Maritime), EN 61326-1 (EMC), RoHS, CE |
| Brand | RainWise |
|---|---|
| Origin | USA |
| Model | RGA |
| Housing Material | Anodized Aluminum & Stainless Steel |
| Sensor Type | Tipping Bucket |
| Switch Mechanism | Reed Switch |
| Output Signal | Momentary Pulse (< 0.1 s duration) |
| Resolution Options | 0.25 mm, 0.2 mm, or 0.1 mm per tip |
| Accuracy | ±0.5% at 12.5 mm/h rainfall rate |
| Effective Orifice Diameter | 21.9 cm |
| Height | 31.75 mm |
| Integrated Level Indicator | Yes |
| Mounting Compatibility | RainWise Monopod Stand |
| Brand | RainWise |
|---|---|
| Origin | USA |
| Model | RainLog |
| Power Supply | 2×AAA batteries (alkaline) or optional CR2477N lithium |
| Data Logging Interval | 60 s |
| Memory | Non-volatile EEPROM |
| Storage Capacity | ≥1 year at 1-min interval |
| Rain Collector | 8-inch tipping-bucket (polypropylene body, reed switch output) |
| Resolution | 0.25 mm per tip |
| Accuracy | ±1.5% at 12.5 mm/h |
| Pulse Output | <0.1 s duration, min. pulse width 10 ms, max. input frequency 100 Hz |
| Clock Accuracy | ±1 min/month |
| Operating Temperature | −40 to +60 °C (lithium), −18 to +55 °C (alkaline) |
| Operating Humidity | 0–100% RH, non-condensing |
| Communication Interface | USB 2.0 (standard), RS-232 (legacy variant) |
| Compliance | Designed for long-term unattended field deployment in accordance with ASTM D3624 and ISO 9060:2017 Class B rain gauge performance expectations |
| Brand | Gill |
|---|---|
| Origin | United Kingdom |
| Model | GMX100 |
| Measurement Principle | Optical Infrared Beam Attenuation |
| Range | 0–>300 mm/hr |
| Resolution | 0.2 mm |
| Accuracy | ±2% |
| Sampling Frequency | 1 Hz |
| Output Options | RS232, RS422, RS485, SDI-12, NMEA 0183, MODBUS RTU, ASCII |
| Heating | Integrated Resistive Heater |
| Power Supply | 5–30 VDC |
| Current Consumption | 80 mA (continuous, 12 VDC), 0.7 mA (low-power polling mode) |
| IP Rating | IP66 |
| Operating Temperature | −40 °C to +70 °C |
| EMC Compliance | BS EN 61326:2013 |
| CE Marked | Yes |
| RoHS Compliant | Yes |
| Weight | 0.3 kg |
| Brand | Davis |
|---|---|
| Origin | USA |
| Model | 6464 |
| Resolution | 0.2 mm per tip |
| Accuracy | ±4% of total rainfall or ±1 tip (0.2 mm), whichever is greater |
| Sensor Type | Tipping bucket with reed switch |
| Cable | 4-conductor, 26 AWG, modular RJ-11 connector |
| Standard cable length | 12 m |
| Max extended cable length | 270 m |
| Housing material | UV-stabilized ABS plastic |
| Collection area | 214 cm² |
| Dimensions (rain collector) | Ø16.5 cm × H24 cm (excl. bird spike) |
| Weight | 1.0 kg |
| Mounting | Flat-surface installation |
| Compliance | WMO-recommended design principles |
| Compatible systems | Vantage Pro2, Weather Envoy, Vantage Connect, and all Davis ISS-compatible weather stations |
| Brand | RPR |
|---|---|
| Origin | United Kingdom |
| Model | Kalyx-RG |
| Measurement Principle | Aerodynamic tipping bucket |
| Output | Dry contact closure (SPST) |
| Resolution | 0.2 mm per tip |
| Accuracy | ±1% at 120 mm/h rainfall intensity |
| Maximum Rainfall Rate | 0.0–2000 mm/h |
| Operating Temperature | 1–70 °C |
| Funnel Diameter | 12.7 cm |
| Funnel Area | 127 cm² |
| Height | 225 mm (body only) |
| Weight | 700 g (body only) |
| Compliance | Meets UK Met Office 5-inch standard funnel geometry |
| Power Requirement | None (passive mechanical operation) |
| Brand | RainWise |
|---|---|
| Origin | USA |
| Model | Rainew |
| Measurement Resolution | 0.01 in (0.254 mm) per tip |
| Collection Orifice Diameter | 8 in (203.2 mm) |
| Display Range | 0.00–9.99 in |
| Power | Long-life alkaline battery (display unit) |
| Compliance | Meets NOAA/NWS accuracy specifications for standard precipitation measurement |
| Output | Pulse signal (1 pulse = 0.01 in) |
| Cable Options | 60 ft (Rainew 111), wireless up to 300 ft (Rainewireless) |
| Warranty | Lifetime on collector assembly |
| Brand | R.M. Young |
|---|---|
| Origin | USA |
| Model | 50202 |
| Threshold | 1 mm |
| Accuracy | ±1 mm |
| Output Signal | 0–5.00 VDC (linear, 0–50 mm rainfall) |
| Siphon Cycle Time | ~30 s |
| Power Supply | 8–30 VDC (sensor), 48 W @ 28 VAC (heater) |
| Operating Temperature | −20 to +50 °C (with heater enabled) |
| Dimensions (w/o mounting housing) | 14 cm dia × 65 cm H |
| Collection Area | 100 cm² |
| Collector Diameter | 113 mm |
| Weight (instrument) | 2.5 kg |
| Mounting | U-bracket for mast diameter 25–50 mm |
| Features | Capacitive level sensing, thermostatically controlled heater, frost-resistant insulated housing, no moving mechanical parts |
| Brand | Belfort |
|---|---|
| Origin | USA |
| Model | AEPG II |
| Operating Temperature Range | -55 °C to +55 °C |
| Collection Area | 200 cm² (16 cm diameter) or 50.26 in² (8 in diameter) |
| Precipitation Rate Range | 0.25 mm/h to 3040 mm/h |
| Resolution | 0.025 mm (0.001 in) |
| Accuracy | ±0.25 mm (±0.01 in) or ±0.1% FS |
| Repeatability | ±0.25 mm (±0.01 in) |
| Output | RS-232 (configurable units: mm/in, mass, frequency, collector temperature) |
| Power Supply | 8–18 VDC (3 W nominal) |
| Optional Heater | 115 VAC/60 Hz/2 A or 12 VDC @ 30/60/90 W |
| Enclosure Material | UV-stabilized high-strength thermoplastic over aluminum frame |
| Weight | 13 kg (28.5 lb) |
| Compliance | WMO No. 8, NOAA/NWS Technical Memorandum NWS OH-1, ASTM D7297 |
| Brand | Davis |
|---|---|
| Origin | USA |
| Model | 6466 |
| Sensor Type | Tipping Bucket |
| Resolution | 0.2 mm per Tip |
| Accuracy | ±4% of Total Rainfall or ±1 Tip (0.2 mm), whichever is greater |
| Cable Length | 12 m (standard), up to 270 m max |
| Cable Specification | 4-conductor, 26 AWG, modular RJ-11 connector |
| Housing Material | UV-stabilized ABS plastic |
| Collection Area | 214 cm² |
| Dimensions (rain gauge only) | Ø16.5 cm × H24 cm (excl. bird spike) |
| Weight | 1.8 kg |
| Mounting | Pole- or mast-mounted via integrated base |
| Brand | RainWise |
|---|---|
| Origin | USA |
| Model | EVAP |
| Housing Material | Stainless Steel & PVC |
| Measurement Range | 101–254 mm |
| Resolution | 0.25 mm |
| Accuracy | ±0.25 mm |
| Brand | R.M. Young |
|---|---|
| Origin | USA |
| Model | 52203 |
| Collection Area | 200 cm² |
| Resolution | 0.01 mm |
| Accuracy | ±2% (up to 25 mm/hr), ±3% (up to 50 mm/hr) |
| Operating Temperature | −20 °C to +50 °C |
| Output | Reed Switch |
| Mounting | 1″ NPT pipe clamp or 3-bolt flange (160 mm diameter ring) |
| Dimensions | 18 cm diameter × 30 cm height (39 cm with enclosure) |
| Power Consumption | Not applicable (non-heated) |
| Compliance | WMO-recommended design |
| Brand | RainWise |
|---|---|
| Origin | USA |
| Model | RGP |
| Collection Orifice Diameter | 8 in (203.2 mm) |
| Sensor Mechanism | Magnetic Reed Switch |
| Output Signal | Momentary Pulse (< 0.1 s duration) |
| Resolution Options | 0.1 mm, 0.2 mm, or 0.25 mm per tip |
| Accuracy | ±1.5% at 12.5 mm/h rainfall intensity |
| Housing Material | Polypropylene |
| Operating Temperature Range | -40 °C to +65 °C |
| IP Rating | IP65 |
| Calibration Compliance | NWS-Recommended Standard Orifice |
| Brand | Geonica |
|---|---|
| Origin | Spain |
| Model | DataRain-4000 |
| Measurement Principle | Electronic weighing (load cell-based) |
| Rainfall Rate Range | 0.01–500 mm/h |
| Accuracy | ±1% of full scale across entire range |
| Resolution | 0.01 mm/h |
| Sampling Interval | 1 s to 60 min (user-configurable) |
| Operating Temperature | −40 °C to +85 °C |
| Storage Temperature | −40 °C to +85 °C |
| Relative Humidity | 0–100% RH |
| Ingress Protection | IP66 / NEMA 4X |
| Power Supply (sensor) | 10.5–15 VDC, <5 mW |
| Heater Option | 24 VDC, 1.05 A, 25 W |
| Timekeeping Accuracy | ±4 min/year (±7.6 ppm) |
| Output Interfaces | SDI-12 v1.3, RS-232/RS-422/RS-485 (half-duplex), mechanical pulse (reed switch) |
| Collection Area | Standard 200 cm² (optional 400 cm²) |
| Housing Material | Anodized aluminum / stainless steel |
| Funnel Material | Polypropylene |
| Internal Components | Aluminum / ABS |
| Dimensions | 300 mm H × 185 mm Ø |
| Weight | 1.5 kg |
| Compliance | CE, EMC, ESD, Safety, WMO Guide to Instruments and Methods of Observation (CIMO Guide) |
| Brand | R.M. Young |
|---|---|
| Origin | USA |
| Model | 52202 |
| Collection Area | 200 cm² |
| Resolution | 0.01 mm |
| Accuracy | ±2% at ≤25 mm/hr, ±3% at ≤50 mm/hr |
| Operating Temperature | −20 °C to +50 °C (with heater) |
| Power Consumption | 18 W (heated mode) |
| Output | Reed Switch Closure |
| Mounting | 1″ NPT pipe thread or three-bolt flange (160 mm diameter ring) |
| Dimensions | 18 cm dia × 30 cm H (39 cm H with mounting housing) |
| Leveling | Integrated bullseye level and leveling screws |
| Optional Accessories | 52250 Bird Deterrent Kit, 52202H (220 V/50–60 Hz variant) |
| Brand | R.M. Young |
|---|---|
| Origin | USA |
| Model | 50203 |
| Threshold | 1 mm |
| Accuracy | ±1 mm |
| Output Signal | 0–5.00 VDC (linear, 0–50 mm rainfall) |
| Siphon Cycle Time | ~30 s |
| Power Supply (gauge only) | 8–30 VDC |
| Operating Temperature Range | –20 to +50 °C (unheated operation) |
| Dimensions (body) | 14 cm diameter × 65 cm height |
| with mounting housing | 39 cm height |
| Collection Orifice Diameter | 113 mm |
| Effective Collection Area | 100 cm² |
| Mounting | U-bracket for vertical mast (25–50 mm diameter) |
| Weight (instrument) | 2.5 kg |
| Shipping Weight | 4.0 kg |
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