Applications of Rain Gauge
Knowing how much rainfall is getting in their backyard is very useful to many homeowners. Maybe you’re a gardener and need to measure rainfall so your plants get enough water for optimal growth. Maybe there’s a creek running through your property, and knowing the amount of rainfall needed to trigger a flash flood might help you protect your property before flooding begins. Whatever the reason, this article explains what a rain gauge is, where and how to place it, and the types of rain gauges available. Let’s take a look next
what is a rain gauge
A rain gauge is a meteorological instrument used to measure precipitation. While its sole function, as the name suggests, is to measure rainfall, some gauges also allow you to measure frozen precipitation, such as snow and sleet.
As we mentioned before, rain gauges are great for outdoor enthusiasts, but any weather enthusiast should have one in their tool kit. They also play an important role for meteorologists, and during severe weather events, rain gauge measurements can be sent to the National Weather Service, where they use the data to issue more accurate reports.
How to Read a Rain Gauge
If you have a digital rain gauge, it’s as simple as reading the measurement from the display, but with an analog rain gauge, it’s a bit different. On the side of the gauge, you’ll see markings indicating the amount of rain inside. When it rains, it fills up the tubes. You’ll notice that the surface of the rainwater has a curved shape called a meniscus, which is caused by the liquid coming into contact with the side of the tube. Take the measurement closest to the lowest point on the bottom of that surface and you’ll have the measurement. For analog rain gauges that allow the measurement of moisture content in snow, typically, you need to remove the inner barrel and allow the snow to accumulate in the larger container. Then you need to melt the snow to get an accurate reading.
Proper placement of the rain gauge
If you don’t have the rain gauge in the correct position, your measurements will be worthless. In the simplest terms, it is to put it in the open air and on the ground. However, there are some more specific considerations to keep in mind:
1.A general rule of thumb is to keep the rain gauge twice the height of the nearest obstacle (for example, place the rain gauge 20 feet from a 10 foot tall tree).
2.Position the meter at least 2-5 feet from the ground on one side of the pole with the top of the cylinder a few inches above the top of the pole to prevent splashback.
3.Make sure the top of the rain gauge is level.
4.Keep the meter away from artificial precipitation sources, such as sprinklers, that may affect the reading.
Rain Gauge-Rainfull collection
The rain sensor is used to monitor the rain. It supports RS485, Lora, 4G, pulse output and other output modes. It has accurate measurement, high density shell, sealed waterproof strip, small calibration probe error and strong anti-interference ability.The rain gauge sensor can be used in weather stations, hydrological stations, agriculture and forestry, reservoirs, field stations and other scenes.
Rainfall Monitoring System
The rainfall monitoring station is composed of seven main parts: a monitoring platform, a collection system, a communication system, a sensor system, a power supply system, a real scene monitoring system, and a mechanical installation system. The rainfall monitoring station can combine the actual landscape measurement and LED display, and simultaneously measure air temperature and humidity, wind direction, wind speed, rainfall, soil temperature, soil moisture, light intensity, atmospheric pressure and other meteorological environmental elements.
The user adopts an open and friendly design concept, and the user can change the collaboration between element components and modules by himself, so as to quickly realize the change and expansion of data collection, processing methods, and observation elements. The difference between the design of the rainfall monitoring station and the weather station is that the rainfall monitoring station has an extra rain barrel.