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CONFIGURATION MENU
11.7 Dosing Configuration
• EC Control: Define whether EC control should be operative.
• pH Control: Define whether pH control should be operative.
• EC Alarms: Define whether EC related alarms are operative. When EC control is set to 'Yes', EC Alarms are
automatically set to 'Yes' and cannot be changed.
• pH Alarms: Define whether pH related alarms are operative. When pH control is set to 'Yes' pH Alarms are
automatically set to 'Yes' and cannot be changed.
• Minimum On Time (sec): Define the minimum time the dosing regulator may be opened for. This feature is
used to protect the regulator from being excessively turned on and off. The minimum allowed on time is 0.4
seconds.
• Minimum Off Time: Define the minimum time the dosing regulator may be turned off. This feature is used to
protect the regulator from being excessively turned on and off. The minimum On time allowed is 0.4 seconds.
• EC Coarse Tuning (0-10): EC Coarse Tuning is used to adjust the speed and strength of the EC control. A
higher value will result in faster correction but might lead to over shooting (see Appendix 1 – General > EC/pH
correction adjustment for further information).
• EC Fine Tuning (0-10): EC Fine Tuning is used to fine tune the EC control shooting (see NMC-Pro Irrigation
> Part 2 > General > EC/pH correction adjustment for further information).
• pH Coarse Tuning (0-10): pH Coarse Tuning is used to adjust the speed and strength of pH control. A higher
value will result in faster correction but might lead to over shooting (see NMC-Pro Irrigation > Part 2 > General
> EC/pH correction adjustment for further information).
• pH Fine Tuning (0-10): pH Fine Tuning is used to fine tune pH control shooting (see NMC-Pro Irrigation >
Part 2 > General > EC/pH correction adjustment for further information).
• EC Control Cycle (sec): Define the control cycle for EC control. This should be the time it takes the system
since it injected fertilizer/acid until the change in recognized by the system.
• pH Control Cycle (sec): Define the control cycle for pH control. This should be the time it takes the system
since it injected fertilizer/acid until the change in recognized by the system.
• EC/pH Averaging (0-Low, 20-High): Averaging factor for EC/pH measurement. EC/pH averaging should be
used to enable correction when injection is not homogenous.
• Dosing Booster Off Delay (mm:ss): Define the time that the dosing booster should be left on after dosing
has ended. This time is usually used to circulate the acid and nutrients in order to prevent high concentrations
in the area of the venturies and dosing booster when the system is idle.
• Dosing by QTY. Method:
Bulk: All channels set to QTY (quantity) dosing method will inject the set quantity in one bulk, starting
after water before quantity/time has elapsed.
Spread Out: The set dosing quantity of all channels set to QTY (quantity) dosing method will be spread
throughout the irrigation.
NMC-PRO Installation Manual
Page
119
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