Sampling Description
Rain level recorders are connected to ISCO autosamplers.The accuracy of the rain level recorders are 0.01 in. The autosampler queries the rain level recorder at least every 30 minutes for rain data. The rain level data is downloaded from the ISCO autosampler using a Dell 3800 laptop. The software used to download the information is ISCO Flowlink 3.23. To get one rain level reading per day, all the rain data is downloaded into Micosoft Excel, and the readings for a day are summed. Rain data is then transformed from inches to centimeters by multiplying the numbers by 2.54.
Method Step
Description
Rain level recorders are connected to ISCO autosamplers.The accuracy of the rain level recorders are 0.01 in. The autosampler queries the rain level recorder at least every 30 minutes for rain data. The rain level data is downloaded from the ISCO autosampler using a Dell 3800 laptop. The software used to download the information is ISCO Flowlink 3.23. To get one rain level reading per day, all the rain data is downloaded into Micosoft Excel, and the readings for a day are summed. Rain data is then transformed from inches to centimeters by multiplying the numbers by 2.54.
Instrumentation
ISCO autosamplers Hydrological Services Tipping Bucket Raingauge (TB5) AMJ Tipping Bucket Rain Gauge (RG-2000) Dell 3800 notebook
Quality Control
Data that is downloaded from ISCO is checked for errors (Code from "Flowlink" is 255) and for proper data intervals (every 30 minutes) using Microsoft Excel. Formula used to sum daily rain is as follows: [=IF({hour column}=0,SUM({48 rows of rain values}),"")]