Do this then you will know exactly what your gauge is actually doing, and then one can alter the sketch arithmetic.
Correct way to calibrate and check Rain Gauge:
http://www.meteocercal.info/forum/Thread...in-Sensors
post 7, 14 22 and 23. All other ways; trying to work out bucket volumes etc. will lead to errors. Once you have done this you will then know for sure what each tip actually represents.
If you do the process laid out you will know it is working and that 0.2 or 0.3mm or the number you have calculated of rain has fallen after one tip. To check the rain gauge you need to feed a volume of water equivalent to at least 10 mm of rain through your gauge. If the collector area is (as in FO gauges) 55 sq cm then you need to feed exactly 55ml of water into your gauge in the manner prescribed. This is the 10mm of rain falling on your collector. Please see above link for a step by step guide. Start with post 7 in link above.
If 1mm of rain has fallen then this is 1 mm deep over any area. As correctly pointed out that is equivalent to a litre over a square metre or 10 000 litres over 1 hectare or 10 tonnes of water over the hectare.
As noted before we are measuring tiny proportions of huge things and small errors multiply up which results in useless data very quickly.
Correct way to calibrate and check Rain Gauge:
http://www.meteocercal.info/forum/Thread...in-Sensors
post 7, 14 22 and 23. All other ways; trying to work out bucket volumes etc. will lead to errors. Once you have done this you will then know for sure what each tip actually represents.
If you do the process laid out you will know it is working and that 0.2 or 0.3mm or the number you have calculated of rain has fallen after one tip. To check the rain gauge you need to feed a volume of water equivalent to at least 10 mm of rain through your gauge. If the collector area is (as in FO gauges) 55 sq cm then you need to feed exactly 55ml of water into your gauge in the manner prescribed. This is the 10mm of rain falling on your collector. Please see above link for a step by step guide. Start with post 7 in link above.
If 1mm of rain has fallen then this is 1 mm deep over any area. As correctly pointed out that is equivalent to a litre over a square metre or 10 000 litres over 1 hectare or 10 tonnes of water over the hectare.
As noted before we are measuring tiny proportions of huge things and small errors multiply up which results in useless data very quickly.