Hanna Industrial Grade Fertigation Controller for Process Control Requirements, 230V - HI9914-2

Item #:

HI9914-2

Brand:

Hanna Instruments

Hanna Industrial Grade Fertigation Controller for Process Control Requirements, 230V - HI9914-2

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Description

HI9914-2 Industrial Grade Fertigation Controller for Process Control Requirements, 230V by Hanna Instruments

HI 9914 is a wall mounted fertigation controller, designed to meet specific process control requirements in agricultural, horticultural and hydroponics applications. The controller is provided with two measuring channels, one for pH and one for conductivity. The readings are displayed simultaneously on two backlit, independent LCDs.

The conductivity probe is designed with a built-in temperature sensor which allows the controller to automatically compensate for the temperature effect. The differential input and the use of a matching pin prevent grounding problems and thus ensure longer life to the pH electrode.

The controller includes two regulators for pH and conductivity, that can be adjusted from the front panel by setting two independent thresholds. The conductivity and pH controls are time separated and have a timed operation mode to avoid overdosing of fertilizer or acid. The controller status is indicated by LEDs on the front panel. Moreover, the equipment is provided with a three-level sensor, to control the water level in mixing tanks, the alarm condition and irrigation sequences.

The instrument also features an alarm system, which is activated when an unusual working condition occurs. A humidity detector can be used to stop the controller if any leakage is detected. Water nozzle, circulation pump, feeding pump and alarm are equipped with relays.

Order Information:

HI 9914 is supplied complete with instructions.

Specifications

EC Range	0.00 to 10.00 mS/cm
pH Range	0.00 to 14.00 pH
EC Resolution	0.01 mS/cm
pH Resolution	0.01 pH
EC Accuracy @ 20°C	±5% f.s.
pH Accuracy @ 20°C	±0.02 pH
EC Calibration	manual, 1 point with slope trimmer (80 to 120%) on the front panel
pH Calibration	manual, 2 point, with offset (±2 pH) and slope (80 to 120%) trimmers
EC Setpoint	adjustable, from 0.50 to 10.00 mS/cm
pH Setpoint	adjustable, from 0.5 to 14.0 pH
Temperature Compensation (EC)	automatic from 0 to 50°C
Analog Output	0-5V±5% (0.5V/mS); 0-7 V±5%?(0.5 V/pH)
EC Controller Output	2A, 220V relay
pH Controller Output	2A, 220V relay
Timer	adjustable, from 1 to 10 minutes within a 15-minutes-time frame
Feed OK Output	12V, 15 mA current source
Humidity Sensor	activated if resistivity is below 220Ω
Water Nozzle Output	2A, 220V relay
Circulation Pump Output	2A, 220V relay
Feeding Pump Output	2A, 220V relay
Alarm Output	2A, 220V relay
Water Level Inputs	contact type water level sensors
User Input	contact type switch
External FILL Button	contact type push-button
Power Supply	±10% 115 VAC or 230 VAC; 50/60 Hz
Environment	-10 to 50°C (14 to 122°F); RH max 95% non-condensing
Case Material	fiber-reinforced, self-extinguishing ABS
Dimensions	221 x 181 x 90 mm (8.7 x 7.1 x 3.5’’)
Weight	1.75 kg (3.9 lb.)