HANNA-instruments-HI 9914-Industrial-Grade-pH-and-Conductivity-Fertigation-Controller-

HANNA instruments HI 9914 Industrial Grade pH and Conductivity Fertigation Controller

HANNA-instruments-HI 9914-Industrial-Grade-pH-and-Conductivity-Fertigation-Controller-User-Ma

Wall Mounted
Two measuring channels, one for pH and one for conductivity

Two Measuring Channels

The controller is provided with two measuring channels, one for pH and one for conductivity. The actual values of pH and conductivity are displayed separately on two large LCDs with backlight features for the best easy reading.

Three Level Inputs
Three-level inputs are used to offer the best control of water level, alarm conditions, and irrigation sequences. At the beginning of the irrigation can be triggered through an external signal, while an additional input allows restarting the cycle at any time. The good water composition is signaled on the front panel and with an external signal for remote operating purposes. (Note: Sensors are not included and must be purchased separately).

Matching Pin
Avoid typical problems caused by grounding loop currents, such as progressive damage of the electrode, fluctuating measurements, and poor process regulation. The matching pin prevents potential grOunding problems and thus ensures a longer life for the pH electrode,.

Alarm System
The controller is equipped with an alarm system activated when an unusual working condition occurs. When an alarm condition is reached, the LED turns ON, and the alarm
the relay contact is closed.

Two Regulators
The controller includes two regulators for pH and conductivity, each of them can be adjusted from the front panel and the setpoint values will be displayed. The conductivity regulator adds fertilizer in orden to increase the conductivity of the irrigation water, while the pH regulator can be set for high or low pH correction. For a better result, the conductivity and pH controls are time separated and a timed operation mode avoids Overdosing of fertilizer or acid.

Specifications HI9914HANNA-instruments-HI 991

www.hannainst.com

Documents / Resources

HANNA instruments HI 9914 Industrial Grade pH and Conductivity Fertigation Controller [pdf] User Manual
HI 9914 Industrial Grade pH and Conductivity Fertigation Controller, HI 9914, Industrial Grade pH and Conductivity Fertigation Controller

References

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