User Manual

ManualsBrandsHanna Instruments ManualsSensorsHI 8050

EC CONTROL – S38

ECRef=07.3mS Prog 07

ECBnd: D=00.5 P=01.0

TimeOut:03min

EC CONTROL S38

The EC settings are programmed using this panel. EC control determines the

overall amount of fertilizer added to the irrigation water to maintain the de-

sired conductivity value. The Fertigation Controller controls up to 4 fertilizer

tanks relative to the EC settings established using this panel. The program

number indexes this panel. This panel displays and allows the setting of the

following parameters:

−

EC Ref - EC Ref -

EC Ref - The selectable EC set point programmed for fertilizer dosing.

−

rogram Numberrogram Number

rogram Number - Panel index (used to view settings for all programs).

−

Dead bandDead band

Dead band - The selectable dead band around the EC reference. The

desired (target) EC range.

−

roportional bandroportional band

roportional band -The selectable area around the setpoint where the

proportional control is active.

−

TimeOutTimeOut

TimeOut - Selectable EC control alarm time-out (represents the time inter-

val considered from the moment when the alarm condition actually ap-

pears and the moment when the alarm will be triggered). This parameter

allows the EC control to drive the motorized valves. It sould be greater

than the time needed for the motorised valves to close/open completely.

SET FERTILIZERS – S39

Prog 07

Fer1=020% Fer2=055%

Fer3=060% Fer4=040%

SET FERTILIZERS S39

This panel sets a dosing prescription for fertilizers when fertilizer dosing is

controlled by conductivity. The Fertigation Controller can control 4 fertilizer

tanks. A percentage of each fertilizer dosed can be set using this panel. Each

tank can be set to dose from 0% to 100%. Setting each tank to dose 100%

would represent maximum dosing of all fertilizers relative to the conductivity

set point and control settings. The program number indexes this panel. This

panel displays and allows the setting of the following parameters:

−

rogram Numberrogram Number

rogram Number - Panel index (used to view settings for all programs).

−

Fert settingsFert settings

Fert settings - Selectable fertilizer settings (percent) for tanks 1 through 4.