Description; General Description & Intended Use - Hanna Instruments Groline HI981412 Instruction Manual

5. DESCRIPTION

5.1. GENERAL DESCRIPTION & INTENDED USE
HI981412 pH Dosing System is part of Hanna Instruments Groline family and features a pH controller
with peristaltic dosing pump and a process sensor.
Maintaining the correct pH of plant soil or hydroponic nutrient solution is an ongoing task. Macro
and micro nutrients as well as calcium and magnesium bloom boosters require the correct pH for
absorption into the plants root system.
The HI981412
for soil and hydroponics. It precisely monitors the pH using the
and simultaneously controls the addition of acid or base (Up and Down reagents) using On/Off or
proportional control to fine tune and maintain the optimum pH. Growers can define the ideal set point
for pH. The HI981412
reservoir or be part of a modular control scheme with the
To obtain a representative sample pH, the probe should be located at a spot that experiences
good circulation. The probe can be used in a "sample pot" or reservoir or installed in a flow cell or
recirculation line; perfect for drain-to waste or recirculating systems.
Main Features
• Easy to read LCD display with intuitive, color-coded backlight
• Automatic Temperature Compensation: all readings are compensated for variations in temperature.
Temperature is displayed in °C or °F along with pH reading. The pH probe contains an integral
temperature sensor to simplify installation.
• High and low alarms: warn the user when the nutrient solution is out of desired range by blinking
the LCD backlight red, disabling the pump, and deactivating the alarm relay
• Built-in peristaltic pump with On/Off or Proportional control
• Manual control for pump priming
• Overfeed protection using the overtime safety timer
• Resumes dosing on restart in case of power failure
• IP65 rated enclosure designed to withstand harsh environments
• Level input to stop control when nutrient levels are low
• Wall-mounted design
• User selectable languages
• Extremely easy to calibrate and use (prepackaged calibration standards)
The HI981412
horticulturist to have real-time monitoring and control of nutrient solutions, to obtain and maintain
the ideal pH for optimum results at all times.
8
Groline pH Dosing System, easily assimilates into a nutrient/fertilizer system
is a small dosing controller and can be easily setup for a stand-alone nutrient
Groline pH Dosing System is engineered to be an inexpensive solution for the
HI10063 pH/temperature probe;
HI981413 Groline Nutrient Dosing controller.