Tuesday, August 31, 2010
Also - as a reminder - Isaya and Tanh will be in Homestead this weekend. They will be installing tensiometers and collecting soil samples for the C111 project... weather permitting!! Tanh is the newest PhD student to our group.
Monday, August 30, 2010
Installation day began with a two irrigation-zone city water property requiring a complete retrofit.
With the D.I.Y.-oriented homeowner at our side the entire time, we installed an anti-siphon valve to protect the potable lines, two electric valves, a water meter on each zone and the soil water sensor system.
The day’s second property also featured a mechanical city water irrigation system. Fueled by the homeowner’s offer of all the ice water we could drink, we again installed the anti-siphon valve, electric valves, a water meter on each of the two zones, and the soil water sensor system.
The addition of these properties to the WUEP pair-wise study brings the research site total to 16. Organized by geographical region, I visit these properties weekly to collect water-use data – specifically, comparing a zone programmed to irrigate on schedule against a zone that is prevented from irrigating should the soil water sensor detect adequate moisture. This data helps demonstrate the effectiveness of irrigation control technology in urban landscape irrigation.
Wednesday, August 25, 2010
Part I: installing access tubes
Tuesday, August 24, 2010
Thursday, August 19, 2010
The configuration process
Configuring the soil water content probes consists of establishing, for each indiviual sensor:
-high and low points
-depth in the ground
-poistion on the probe
The final step is naming the specific probe based on study necessity.
Below are pictured all the tools for successful configuration of these particular probes (Solo).
For configuration to begin, the probe is connected to the head unit (for power) and the USB cable (to communicate with the laptop).
Once communication is achieved, the probe is then inserted into the access tube. The tube is then held in the air and each sensor is read individually to establish the high point reading.
Monday, August 16, 2010
The final step in the process involved the programming and deploying of Solinst leveloggers. The leveloggers were installed at an elevation of -2 meters below sea level (NGVD 29) and were programmed to log water table levels every 15 minutes. A barologger was installed in one of the wells in order to provide for atmospheric corrections. The leveloggers are currently in a testing period.
Soil Water Monitoring
In the coming weeks, we will install EnviroScan probes near the well locations to monitor soil water in the different soil types (i.e., Krome, Chekika and Marl) of the agricultural areas along the C-111 canal. Stay tuned!
* Isaya Kisekka contributed to this blog post.