In this experimental work we have created a soil moisture temperature correction algorithm within a DeltaLINK 3 Script. The GP2 Data Logger collects soil moisture data and applies a correction for the temperature dependence of the relative permittivity of water enabling the relationship between changes in substrate moisture and environmental…
This tutorial shows you how to implement and test Dew-Point and Wind chill algorithms with the DeltaLINK 3 Script Editor. It has been designed to illustrate a step-by-step approach to implementing, testing (via simulation) and to show the potential of deploying custom functionality to a GP2 Logger via DeltaLINK 3…
Working at Delta-T Devices Delta-T Devices is a high-tech co-operative that manufactures scientific instruments which are used globally in leading climate change, food security and environmental research. Considered a blue-chip brand in our market segments and trusted for our quality and innovation for over 50 years, we are respected for…
This tutorial contains a step-by-step guide to using the GP2 to control and record a simple irrigation system. Part one of the tutorial shows how DeltaLINK 3 can simulate the logger, the irrigation system, the weather and the movement of the moisture through the soil while a crop grows. Part…
In this application we have created control algorithms that enable a GP2 Logger and Controller to simultaneously deliver precise irrigation control for a flood tray and control the soil temperatures for two propagators. The GP2 controlled flood tray irrigation events use feedback from an SM300 Soil Moisture Sensor to activate…
With reference to information and materials below, please note that, as of Sept 2018, the GP2 now also calculates the full FAO 56 / ASCE Penman-Monteith equation – see GP2 overview page for more details. In this Application, the GP2's Script Editor & Simulator features were used for a comparison of…
In this application we have used soil moisture and tension sensors data to estimate slope or bank stability safety factor (FS) in response to rainfall events. Both the DeltaLINK 3.0 Script Editor and Simulator features were used for this evaluation of the Safety Factor model. Back to GP2 Software Resources…
In this application we have created a very simple irrigation controller within the DeltaLINK 3.0 Script using soil moisture and water flow sensors. The GP2 collects data from these sensors and a PR2 Profile Probe enabling the relationship between irrigation water volume and changes in soil moisture to be investigated…
This application demonstrates a precision soil moisture sensor controlled irrigation system that maintains plant water status, so that either: a) plant water status is consistent throughout the experiment or b) the system can be used to investigate the effects of varying soil water deficit irrigation on plant growth. Back to…