Designed for farmers who want to push their irrigation capabilities, plant quality and yields to the next level.
Each precision irrigation controller (the grey box) can connect up to 4 x 24v solenoid valves (Flora Flex Nylon Valve is compatible) and 4 x TDR sensors. The unit will beam wirelessly to your phone and provide you with a push and on-demand notification on the WC, EC and PH of your growing medium. If you have more than one sensor it'll give you an average. You can also set automation rules to turn on your solenoids if WC = X%
Other Growlink Options
- Unit + 1 TDR Sensor
- Unit + 2 TDR Sensor
- Unit + 3 TDR Sensor
- Unit + 4 TDR Sensor
- TDR Sensor Only
- Irrigation Controller Unit Only
- Teros 12 Adapter
Way more data and rule automation setting and detail graphing is available on the web portal. Some functionality will require a subscription, at the time of writing (27JAN23)it's about 5USD per sensor per month.. which equates to a very affordable cost of 14p a day?
What is a TDR Sensor?
TDR stands for “Time-Domain Reflectometry” and is a far superior technology for measuring water content.
The TDR sensor works by creating a high-resolution image by sending a waveform into the substrate and
measuring the returning reflections of the waveform.
The image is then analyzed to determine the round-trip propagation time between the incident wave and the first reflected wave. The substrate permittivity can then be calculated, along with the water content, at a much higher resolution and accuracy over a capacitance-based sensor.
One of the most significant benefits of the TDR sensor is that propagation time is independent of the electrical conductivity of the substrate. Meaning, TDR sensors report the actual volumetric water content
independent of soil electrical conductivity, compaction, and settling. TDR sensors don’t require multiple
equations for differing substrate types.
Compared to a capacitance-based sensor (such as the Teros 12), the TDR sensor is more complex and costs more to manufacture, but it is superior when measuring water content. Capacitance-based sensors have been tested - dependent on the water content - to be as much as 2 to 15 EC (yes fifteen, it's not a typo!) off the actual EC value depending on the current water content of the medium. Don't just take our word for it - TDR versus Capacitance based sensor!
However, for those who already have the Teros12 sensor, you can actually hook it up to the GrowLink with this adapter...so no more single-spot readings via bluetooth!!
Breakthrough true time-domain reflectometer (TDR) soil moisture sensors. Measures VWC, EC and temperature of the substrate. In partnership with Acclima, Growlink now offers this superior technology at an affordable price.
Use the Growlink App to visualize data, evaluate rules performance and test new optimizations. Deliver
real-time data wherever and whenever you need it. Set the amount, frequency, and timing of irrigation
events to steer growth. Our learning software enables you to save hours each day by combing through data
and adjusting irrigation timers while ensuring the right decisions are made at the right time.
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