HI GroLine pH Dosing System
HI GroLine pH Dosing System
HI-981412-00 GroLine pH dosing system with HI-10063 pH probe
Maintaining the correct pH of plant soil or hydroponic nutrient solution is an ongoing task. Macro and micronutrients, as well as calcium and magnesium bloom boosters, require the correct pH for absorption into the plants' root system.
The HI-981412 Groline pH Dosing System easily assimilates into a nutrient/fertilizer system for soil and hydroponics.
It precisely monitors the pH using the HI-10063 pH/temperature probe 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 HI-981412 is a small dosing controller and can be easily set up for a stand-alone nutrient reservoir or be part of a modular control scheme with the HI-981413 Groline Nutrient Dosing controller.
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 re-circulation line. Perfect for drain-to-waste or recirculating systems.
Each instrument is delivered in a cardboard box and supplied with:
- HI-981412-00 without mounting kit
- HI-10063 pH/temperature probe
- 4.01 pH Buffer solution, 20 mL (3)
- 7.01 pH Buffer solution, 20 mL (3)
- Power connection cable
- Instrument & electrode quality certificates
- Instruction manual
- Reduced installation time and costs
- Accessible and easy to maintain pH in a nutrient-feeding system
- The HI-981412 Groline pH Dosing System is engineered to be an inexpensive solution for the horticulturist to have real-time monitoring and control of nutrient solutions to obtain and maintain the ideal pH for optimum results at all times.
- Built-in peristaltic pump with On/Off or Proportional control
- Manual control for pump priming
- Overfeed protection using an overtime safety timer
- Resumes dosing on restart in case of power failure
- Easy-to-read LCD display with intuitive, color-coded backlight
- Level input to stop control without reagents
- Probe detection and recognition
- Easy to navigate the menu to program and adjust settings
- Wall-mounted design
- IP65-rated casing
About the HI-10063 Amplified pH/Temperature Probe
The HI-981412 uses the HI-10063 amplified probe that incorporates both pH and temperature sensors and connects to the controller with a single waterproof Quick Connect DIN connector.
The built-in amplifier helps to reduce electrical noise from re-circulation pumps to provide for stable, reliable measurement. The pH glass used is ideal for low conductivity water and provides for fast response.
The PVDF body of the probe has a 1/2” threaded fitting for insertion to an in-line “T” fitting or the flow cell. The back end part of the probe has 3/4” NPT threads for submersion/ tank mounting. The probe body has a hex fitting for tightening snuggly with a wrench.
|Range||0.00 to 14.00 pH*, -5.0 to 105.0 °C (23.0 to 221.0 °F). * The range may be limited by the probe’s limits.|
|Resolution||0.01 pH; 0.1 °C (0.1 ºF)|
|Accuracy @ 25 °C / 77 °F||±0.10 pH; ±0.5 ºC (±0.9 ºF)|
|Calibration||User calibration: automatic, one or two-point with buffer solution (4.01, 7.01, 10.01 pH). Process calibration: single point, adjustable (±0.50 pH around measured pH)|
|Temperature Compensation||Automatic - On/Off control using adjustable set point (4.00 - 10.00 pH) with adjustable hysteresis (0.10 to 1.00 pH). - Proportional control using an adjustable set point (4.00 - 10.00 pH) with an adjustable proportional band (0.10 to 2.00 pH)|
|High or Low Mode Operation Pump Control||Startup delay timer at power-on (0 to 600 sec.) - Pump flow control 0.5 to 3.5 Litre/hour (0.13 to 0.92 Gallon/hour) and maximum output pressure 1 atm (14 psi) - Manual control for pump priming (defined in setup). - High & Low with enabling or disable option - Triggered after 5 sec. if the controller records a set of consecutive readings over or under threshold values|
|pH Alarms||Level with enabling or disable option - Overtime protection (1 to 180 min. or Off). -Intuitive alarm system, using red, yellow, and green color-coded backlight|
|Controller Alarm System||User-selectable, alarm setup options - SPDT 2.5A / 230 Vac|
|Alarm Relay Output||Activated by pH-selectable alarm conditions. - Quick connect DIN connector|
|Probe Input||Galvanic isolation - External switches can be attached to hold the control due to external events (low reagent level, recirculation pump doesn’t work)|
|Digital Input||Galvanic isolation|
|Power Supply||100 - 240 Vac, 50/60 Hz|
|Power Consumption||15 VA|
|Environment||0-50 ºC (32-122 ºF), max. 95% RH non-condensing|
|Dimensions||90 x 142 x 80 mm (3.5 x 5.6 x 1.8”)|
|Weight||908 g (36 oz)|
|Casing||Wall mounted, built-in pump, IP65 rated|
|HI-10063 pH & temperature probe|
|Range||0 to 12 pH|
|Temperature range||-5 to 70˚C (23 to 158 °F)|
|Top thread||3/4” NPT|
|In-line mounting thread||1/2” NPT|
|Cable length||2 m|
|Connector||Quick connect DIN connector|
|Maximum pressure @25 °C||3 bar (43.5 psi)|
|Input voltage range||85-264V|
|Maximum output power||1150W|
|Power factor||> 0.98|
|Open circuit voltage||250Vrms|
|Ignition interval||1-2-5-5-5 Min|
|Input current protection||15A|
|Bulb failure detection||yes|
|Flickering of the lamp / acoustic resonance||no|
|Max temperature of the box||(Tc) 80 ° C|
|Ambient temperature||-25 to 40 ° C|
|IP environment required||IP23|