Irrigation Programming - Vapor Pressure Deficit (VPD) Accumulation Irrigation
Another advanced on-demand irrigation equipment type for the Pearl is the Vapor Pressure Deficit (VPD) accumulation mode.
VPD is the difference (referred to as deficit) between the amount of moisture in the air and how much moisture the air can hold when it is saturated. Therefore,
This measures the amount of stress that the plants are experiencing and helps to determine when to effectively water. The Pearl calculates the VPD based on the temperature and humidity sensors in the greenhouse, and accumulates it over time. This is similar to the accumulated light mode, except the Pearl accumulates the VPD level instead of light
To program VPD Irrigation from Pearl Cloud Platform you would do the following:
To program VPD Irrigation from Pearl Controller you would do the following:
Related Articles
HydroRoot 16 Installation Guide
The HydroRoot Irrigation Controller is designed for simple setup and reliable operation in greenhouses, indoor farms, and research facilities. To make installation easier, we've provided the HydroRoot 16 Installation User Guide in this article. It ...Irrigation Programming - Accumulated Light Irrigation
In this mode the irrigation cycle is triggered when the accumulated light or “light sum” reaches a threshold or when the maximum off time limit is reached. This mode gives the system the ability to water on a demand based usage to match the plants ...iGrow1400 - Irrigation Accumulated Light Programming
The iGrow 1400 Controller allows you to Irrigate in accordance of accumulated Light. In order for you to use Accumulated Light you must first have a Light sensor Installed on the controller iGrow1400 Irrigation Accumulated Light Programming To ...Irrigation Programming - Scheduled Irrigation
Scheduled Irrigation mode is like a time clock where you set the start time, run time and days of the week. Scheduled mode allows the Pearl™ to turn the Irrigation channel on for a duration equal to OnTime at up to six start times per day. Use N:A to ...iPonic Irrigation Programming Video!
THIS PRODUCT HAS BEEN DISCONTINUED AND REPLACED BY THE PEARL CONTROL SYSTEM. https://link4controls.com/link4_controllers/ Click the link below for additional information on irrigation programming for the iPonic 600 Series controllers.