Wednesday, October 27, 2010
Tuesday, October 19, 2010
Friday, October 8, 2010
I have been in Homestead since early September focusing exclusively on the Snapper Creek Project - learning the different devices and troubleshooting some discrepancies in the systems. The following is a short summary of this project.
Erected this summer, the weather and soil water monitoring site at Snapper Creek (Miami, FL) is collecting data for use by water managers in Miami-Dade County to develop water and energy conservation measures for urban landscape irrigation systems.
Equipment installed at the site:
1. Wind speed sensor that measures accurately wind speeds in the range of 0 to 100 mph.
2. Temperature (-40o to + 60oC) and Relative Humidity (0 to 98% RH, non-condensing) probes.
3. Two Tipping bucket rain gages with 0.01 inches (0.254 mm) per tip.
4. Three Water content reflectometers to measure soil volumetric water content.
5. Two Soil temperature probes (-35o to + 50oC).
6. Precision Infrared radiometer (Field of view, 22o half angle).
7. Two Soil heat flux sensors (±2000 Wm-2).
8. Two Solar radiation sensors to measure incoming and reflected solar radiation.
9. Net radiometer.
Two Campbell Scientific data loggers (CR800 and CR1000) are used to collect the measured data. The PC400 software is used to download data from the data loggers.
Data collection at the Snapper Creek site will continue for several years. Ideally, somewhat better understood thanks to what I was able to accomplish this past month.
Tuesday, October 5, 2010
Friday, October 1, 2010
The first retrofit phase occured in August, when the mechanical timer was replaced with the soil water sensor system and the TDT was buried in a sunny area under turf.
Thanks to the efficiency rebate the WUEP offers large HOA properties, we were able to install water meters on two irrigation zones during the second retrofit phase - upgrading from a six zone mechanical indexing valve to electric valves.
A water meter is installed on each experimental zone to monitor water-use and compare schedule-based to soil water sensor-based irrigation.
Undoubtedly the final research site installation of 2010, this property brings the site total to 15 for this year – this includes 10 complete retrofits and 5 meter installations on pre-existing digital systems.