Item No. LEW286
Photo 1 of 1
Float and siphon rain gauge that draws a continuous daily or weekly chart of rainfall, showing when it rained and how hard.
Overview
The self recording rain gauge keeps a continuous record of rainfall on a chart, so you see not only the total but when the rain fell and how intense it was. It is used at meteorological and hydrological stations, for flood studies and wherever rainfall intensity matters.
Rain from the funnel-shaped collector at the top flows into a float chamber. As the chamber fills, the float rises and its pen traces the rainfall on a chart turned by a clock. When the chamber is full, a siphon empties it at once and the pen returns to zero, so recording carries on through any amount of rain.
The gauge is housed in fibreglass and is simple to run, with low operating and maintenance costs. Daily and weekly chart models are available.
Key features
How it works
The funnel leads rain into the float chamber.
As the chamber fills, the float rises and its pen draws the rainfall on the chart turned by the clock.
When the chamber is full, the siphon empties it and the pen drops back to zero, ready for more rain.
Key specifications
| Parameter | Value |
|---|---|
| Record | Continuous chart, daily or weekly |
| Mechanism | Float and siphon |
| Housing | Fibreglass |
| Shows | Rainfall total, timing and intensity |
| Collector | Funnel at the top of the gauge |
| Power | None; clock-driven chart |
★ also shown at the top of the page.
FAQ
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