Measuring rainfall (or precipitation if we consider hail, sleet, and snow as well) accurately is surprisingly difficult, especially under high rainfall intensity conditions. Because of the nature of precipitation, the only way to measure it accurately on a continuous basis is to intercept a portion of the precipitation across a known area, while at the same time letting it pass through or over the gauge so the accumulated precipitation that is being measured does not obstruct the gauge and alter the measurement. The other difficulty arises from the wide range of rainfall intensity.

Choosing the right water quality sensor can be challenging. Most water quality sensors come in multi-parameter instruments, with a substantial price tag. To select the one that is right for your application you need to research and understand the available options, features, and specifications of each instrument before you can make your decision. This article was written to help you do that. We’re going to focus on sensor-and application-specific issues you should consider, not on what water quality is or why you would want to measure it.

 
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