Miscellaneous
This is the final tab in the Options dialog but it is very important.
The Limits section is used to set bounds on timing parameters. These bounds can help prevent a nasty situation should a pump decide to run too long. Reasonable times can be established once the system is up and running.
- Res pump timeout - maximum time the reservoir pump can run if the mixing tank float fails to trigger.
- Blending time - time for mixing tank blending after all nutrients have been added. Blending is usually accomplished by inserting an air stone in the mixing tank.
- Solenoid open time - maximum time allowed for the mixing tank to empty into channel containers. This is specified in seconds per liter.
- Minimum nute pumping - least amount of time allowed for a nutrient pump to run.
- Solenoid flush time - time nutrient pump will run to flush pure water through lines to mixing tank.
Program startup section
- Auto start on program load - selecting this option will enable the program to start without clicking the start button
- Start when Windows starts - selecting this option will cause the program to start automatically when Windows starts
- Run in taskbar - selecting this option will cause the program to insert an icon in the task bar and start up minimized
Sensors and Other sections
- Sensor debounce - elapsed time before a sensor state change is accepted. Helps prevent momentary float sensor activity from triggering a spurious nutrient mixing event.
- Analog smoothing constant - sensor values are constantly changing regardless of a trend that may be present. This can cause difficulties for pH and TDS monitoring. A larger value for this constant places more emphasis on the current reading and less on historical readings. This process is often referred to as exponential smoothing.
Nutrient conductivity
- Select the units preferred for nutrient concentration. If TDS is selected, HHS will convert all displayed values using the selected TDS to EC conversion factor.
