RIM-7499-STD Rain Gauge
The RIMCO RIM-7499 range of siphon controlled tipping bucket rain gauges are professional instruments designed and constructed for long-term operation with minimal maintenance under all climatic conditions. All materials are corrosion resistant. These proven instruments are accurate to within 3% up to rainfall rates of 190mm/hr.
The RIM-7499-STD (standard) comes with a lower specification funnel and calibration than the RIM-7499-BOM (Bureau Of Meteorology) version. The STD version is ultimately the ideal low-cost alternative to the BOM version. The lower cost RIM-7499-STD can however, be ordered with the higher specification 1% BOM calibration.
Rain falling on the 203mm collecting funnel is directed through a siphon control unit and discharges as a steady stream into a two-compartment bucket mounted in an unstable equilibrium. As each compartment fills, the bucket tilts alternately about its axis. Each tip forces a contact closure by magnetic means corresponding to 0.2, 0.25 or 0.5mm of rainfall according to bucket capacity. A calibration certificate is supplied with every RIM-7499 rain gauge.
Mounting Accessory – RIM-7499-Stand
| Collector Diameter | 203mm (8’’) ± 0.2mm |
| Resolutions | 0.2mm (RIM-7499-020-STD); 0.25mm; (RIM-7499-025-STD); 0.5mm (RIM-7499-050-STD); |
| Accuracy | ±3% to 380mm/hr.; Can measure up to 347mm/hr (4%);
RIM-7499-BOM version is available for more accurate funnel collector specification. Non-siphon and imperial resolution versions are also available with differing accuracy specification. |
| Contacts | Two normally open magnetically actuated reed switches. Individual protection built-in. |
| Resolution | 1.24 μm |
| Reed Switch Rating | 50V AC/DC @0.5A non-inductive |
| Closure Timing | 50ms min.; 150ms max.; Max bounce time 0.75ms; up to 500mm/Hr |
| Termination | Screw termination (2.5mm²) |
| Heating Option | 12 or 24V AC/DC (48W max) operation with electronic thermostatic control (P/N 7499-TCH); Please specify operating voltage when ordering. |
| Data Logger Option | Several models available depending on application requirements. Some data loggers may be installed within the body of the rain gauge. |
| Dimensions | Height: 300mm; Body Diameter: 230mm; Base Diameter 280mm; Net Weight: 5.5kg; Shipping Weight: 7kg. |
| Material | Collector: Copper; Jacket: Stainless Steel; Base: Cast Marine Grade Aluminum; Bucket: Gold Plated Brass; Bridge: Anodized Marine Grade Aluminum; Switch Holder: Delrin; Fasteners: Stainless Steel. |
| Mounting Accessory | A rugged mounting pedestal that elevates the collection RIM 1m above ground level (P/N RIM-7499-Stand) |