RainGaugeCalP

Description

J E Patterson - jepspectro.com - 20231119

Introduction to The Tipping Bucket Rain Gauge

Tipping Bucket Rain Gauge calibration given volume of water in ml, number of tips and diameter of funnel in mm.

To calibrate fill a container with water.
Weigh it in grams.
Add water very slowly to the raingauge funnel.
Count the number of tips.
Weigh the container again.
Subtract the weights = water volume used in ml.
The reference above has more detailed information.

Water volume used in ml ENTER
Number of tips ENTER
Diameter of funnel in mm GSB A

mm rain per tip is displayed.

Example:
Water volume used 98 ml
Number of tips 25
Diameter of funnel 100 mm
mm rain per tip = 0.50 mm

9 8 ENTER
2 5 ENTER
1 0 0 GSB A
mm rain per tip = 0.50 mm

Program Resources

Labels

Name	Description
A	Run Rain Gauge calibration

Storage Registers

Name	Description
1	Area of funnel in mm²
2	Number of tips
3	Total volume of water used - ml
4	Volume divided by tips - ml
5	mm per tip

Program

Line	Display	Key Sequence
000
001	42,21,11	f LBL A
002	2	2
003	10	÷
004	43 11	g x²
005	43 26	g π
006	20	×
007	44 1	STO 1
008	33	R⬇
009	44 2	STO 2
010	33	R⬇
011	44 3	STO 3
012	45 2	RCL 2
013	10	÷
014	44 4	STO 4
015	45 1	RCL 1
016	10	÷
017	26	EEX
018	3	3
019	20	×
020	44 5	STO 5