Product Description
Hanna GroLine HI981413-00 Nutrient Dosing System - Automated EC/TDS Control for Hydroponics
The Hanna GroLine HI981413-00 Nutrient Dosing System is engineered for maintaining precise fertilizer concentration in hydroponic nutrient solutions and irrigation water. This automated controller continuously monitors EC/TDS levels and doses nutrients automatically to maintain optimal growing conditions. Simply insert the probe and injection valve in-line with your recirculation pump, provide the chemical to be dosed, and let the system maintain perfect nutrient levels 24/7.
Complete Automated Dosing Solution
The HI981413-00 arrives as a complete system with built-in peristaltic pump, HI30033 EC/TDS/temperature probe, calibration solutions, and everything needed for immediate installation. Perfect for small to medium hydroponics systems, greenhouses, and irrigation applications where consistent nutrient concentration is critical for successful plant propagation and growth.
Key Benefits
Automated Nutrient Control: Maintains precise EC/TDS levels without manual intervention
Built-In Peristaltic Pump: Powerful stepper motor design with no gears or brushes for long life
Proportional Control: Advanced dosing algorithm prevents overshooting set points
Adjustable Flow Rate: 0.5 to 3.5 L/h (0.13 to 0.92 gal/h) for precise dosing control
Multicolored LCD Display: Green for normal operation, red for alarm states
IP65 Rated Enclosure: Wall-mounted design withstands humid grow environments
Multiple Configurations: Easy integration into existing setups
Advanced Dosing Pump Features
Peristaltic Dosing Pump
The powerful built-in peristaltic pump uses a stepper motor which does not have any gears or brushes, providing long operational life with minimal maintenance. The pump is integrated directly into the IP65-rated wall-mounted enclosure for a compact, all-in-one solution.
Automatic Proportional Pump Control
The peristaltic dosing pump can be controlled by simple on/off or more advanced proportional control which helps prevent overshooting of the set point. This intelligent dosing algorithm ensures smooth, gradual adjustments to nutrient concentration without sudden spikes.
Adjustable Flow Rate
The dosing pump flow rate is adjustable from 0.5 to 3.5 L/h (0.13 to 0.92 gal/h), allowing for better control in maintaining a desired set point. Manual control mode enables pump priming for initial setup and maintenance.
Tank Level/Flow Switch Input
A connection to an optional level controller or flow switch provides safety interlocks. This galvanically isolated input can be used to disable the dosing pump when there is no chemical left in the reservoir tank or there is no flow due to the recirculation pump being turned off.
Intelligent Monitoring & Alarms
Multicolored LCD Display
The multi-colored LCD provides instant visual status feedback. The display shows green when operating normally and red while in an alarm state, allowing you to assess system status from across the room.
Programmable Alarm System
High/Low Alarms: Triggered after 5 seconds of consecutive readings over/under threshold values
Level Alarm: Alerts when chemical reservoir is empty (with optional level controller)
Overtime Protection: Adjustable from 1 to 180 minutes or off to prevent excessive dosing
Alarm Relay Output: SPDT 2.5A / 230 VAC for external alarm devices
Color-Coded Backlight: Intuitive red, light green, and green color system
HI30033 EC/Temperature Probe
The included HI30033 amplified probe incorporates both EC (TDS) and temperature sensors in a single waterproof Quick Connect DIN connector. The probe features:
PVDF Body: Durable polyvinylidene fluoride construction resistant to chemicals
1/2" Threaded Fitting: For insertion into in-line "T" fitting or flow cell
Quick Connect DIN: Waterproof seal reduces electrical noise in humid environments
Galvanically Isolated: Prevents ground loop interference
Amplified Design: Reduces signal degradation over cable length
Technical Specifications
EC/TDS Measurement
Parameter
Specification
EC Range
0.00 to 10.00 mS/cm
EC Resolution
0.01 mS/cm
EC Accuracy (@25°C)
±2% F.S.
TDS Range
0-4500 ppm (0.45 CF) / 0-9900 ppm (0.99 CF)
TDS Resolution
1 ppm
TDS Accuracy (@25°C)
±2% F.S.
TDS Conversion Factor
Selectable from 0.45 to 0.99
Temperature Measurement
Parameter
Specification
Range
-5.0 to 105.0°C / 23.0 to 221.0°F
Resolution
0.1°C / 0.1°F
Accuracy (@25°C)
±0.5°C / ±0.9°F
Compensation
Automatic
Temperature Coefficient
β adjustable 0-2.4%/°C (default 1.9%/°C)
Calibration Options
EC User Calibration: Automatic one-point with standard solution (1.413 or 5.000 mS/cm)
Process Calibration: Single point, adjustable (±0.50 mS/cm around measured value)
TDS Calibration: Through EC calibration
System Specifications
Specification
Detail
Model
HI981413-00
Pump Flow Rate
0.5 to 3.5 L/h (0.13 to 0.92 gal/h), adjustable
Pump Control
On/off or proportional with manual priming mode
External Event Input
Level controller or flow switch (galvanically isolated)
Alarm Relay Output
SPDT 2.5A / 230 VAC
Power Supply
100-240 VAC, 50/60 Hz
Power Consumption
15 VA
Enclosure Rating
IP65 (wall-mounted with built-in pump)
Operating Environment
0-50°C (32-122°F); RH max 95% non-condensing
Dimensions
90 x 142 x 80 mm (3.5 x 5.6 x 1.8")
Weight
910 g (32 oz)
What's Included
HI981413-00 nutrient dosing controller with built-in peristaltic pump
HI30033 EC/TDS/temperature probe with Quick Connect DIN connector
Conductivity calibration solution sachets (3 x 20 mL)
Power connection cable (100-240 VAC)
Instruction manual
Quality certificates for instrument and probe
Applications
Small to medium hydroponic systems
Greenhouse nutrient management
Aquaponic systems
Irrigation water fertilization
Nursery and propagation facilities
Research and educational applications
Commercial grow operations
Why Choose the GroLine HI981413-00?
Engineered by Hanna Instruments specifically for automated nutrient management, the HI981413-00 delivers professional-grade dosing control in a compact, wall-mounted package. The combination of proportional pump control, programmable alarms, and robust construction makes it ideal for growers who demand precision and reliability. The built-in peristaltic pump eliminates the need for external dosing equipment, while the IP65-rated enclosure ensures long-term durability in humid grow environments.
Manufacturer: Hanna Instruments (GroLine Series)
Country of Origin: Romania
SKU: HI981413-00
