Hanna Instruments GroLine pH/EC/TDS/temperature meter HI9814
The versatile combination of pH, conductivity, TDS and temperature measurement makes this device an efficient and precise companion in hydroponics, the agricultural sector and research laboratories. Thanks to its robust design and automatic calibration options, the compact handheld meter provides reliable measurement results even under difficult environmental conditions. The [HI9813-6N] offers similarly sophisticated multi-parameter functions in terms of conductivity and temperature measurement - however, the model presented here offers more extensive configuration options and a faster calibration option. Those who attach great importance to precise TDS determination will benefit from the two conversion factors (0.5 or 0.7), which makes it much easier to use in different areas.
Universal functionality in the agricultural and hydroponics sector
This handheld meter has been specifically designed to provide reliable data in agricultural and hydroponic processes. Instead of several separate devices for pH, conductivity and TDS, a single multi-parameter probe is used, which records all key measured variables simultaneously. This not only reduces space requirements, but also increases efficiency during routine analyses and spot checks on site.
The device is particularly advantageous when used in nutrient solutions for hydroponic systems and irrigation water analyses. This allows farmers and gardeners to quickly detect changes in pH value or conductivity and make the necessary adjustments to fertilizer solutions in a targeted manner. Thanks to the waterproof IP67 design, the meter is protected from damage even during intensive field work or in damp environments.
Important performance features
- pH measuring range: 0.00 to 14.00 for flexible use in a wide variety of solutions
- Conductivity and TDS ranges: 0.00 to 6.00 mS/cm or up to 3999 ppm, depending on the conversion factor
- Automatic temperature compensation: Minimizes measurement errors with changing temperatures
- Quick calibration function (Quick Cal): For pH and EC calibrations with just one touch
- Pre-amplified multi-parameter probe: Reduced interference and better signal quality
- TDS conversion factor: Choice of 0.5 or 0.7 for application-specific adjustments
- Waterproof housing: Complies with IP67 standard for safe outdoor use
All measurement, calibration and setting processes can be controlled intuitively using the two buttons on the device. Those working in the laboratory also benefit from one- or two-point calibration using classic standard buffers. Alternatively, the Quick Cal solution supplied enables single-point calibration in a fast procedure. The internal temperature sensor eliminates the need for manual calculations for compensation: pH, EC and TDS values are automatically adjusted to the actual temperature.
Similar to the [HI993301], a robust housing design is used that can also cope with more aggressive environments. In addition to the HI1285-7 multi-parameter probe, the scope of delivery also includes several cleaning solutions, batteries and operating instructions. For additional protection, a rubber protective cover is recommended to withstand impacts or splashing water even better.
Application examples
- Control of nutrient solutions in hydroponic systems: Rapid measurement of pH and TDS for optimal adjustment of fertilizer concentrations
- Monitoring irrigation water in vegetable and fruit cultivation to ensure consistent conductivity of the nutrient solution
- Use in research laboratories and test stations to immediately detect changes in pH, conductivity and temperature with small sample volumes
- Testing fertilizer mixtures in agriculture to keep salt concentrations (e.g. sodium or potassium salts) within permissible limits
FAQ
How often do I need to calibrate the device?
For daily use, a weekly quick calibration is recommended, especially for pH and EC. For more intensive measurements, more frequent calibration may be useful to avoid incorrect measurements.
Can I use the device in very humid environments?
Yes, the housing is waterproof to IP67. Nevertheless, thorough cleaning and drying is recommended after each use to increase its service life.
Which batteries are required and how long do they last?
The measuring device runs on three AAA batteries and therefore lasts around 500 hours in continuous operation before needing to be replaced.
Is temperature compensation for pH and EC included?
Yes, the instrument automatically compensates based on the measured temperature, ensuring stable measurement results in different environments.
Conclusion
This practical combination of pH, conductivity, TDS and temperature measurement impresses with its quick, uncomplicated calibration, compact design and robust construction. Farmers, laboratory operators and hydroponics enthusiasts benefit from precise measured values that open up prospects for more efficient use of resources and better harvest results. With its sophisticated features, this device is a reliable companion for professional applications in agriculture and hydroponics.
