A tensiometer is used to continuously measure soil moisture based on the suction tension. The size of the suction tension serves as a direct measure of the water availability in soils and is therefore an important parameter in agriculture.
When the soil becomes drier, water is sucked out of the capillaries into the soil and the water column in the chamber is reduced, creating a negative pressure.
The TNS03 tensiometer has a measuring system that measures this reduction and then sends this value to a server via the integrated LoRa module. Compared to capacitive measuring devices, a tensiometer has the advantage that it does not need to be calibrated. The measurement is independent of the composition in the soil.
The TNS03 digital tensiometer can be connected to up to two flow sensors to accurately determine the flow rate of irrigation systems.
Overall, the TNS03 digital tensiometer is a precise measuring instrument for monitoring soil moisture and optimizing irrigation. The use of advanced sensors and control units helps to optimize water consumption, increase irrigation efficiency and promote healthy growth.
The communication of the tensiometer is done over radio (LoRaWAN). A LoRaWan Gateway bridges the data between the cloud on the internet and the sensor. The range can be several kilometer depending on the landscape and obstacles - even 20km can be achieved.
All measurements are sent periodically to the Elmed-Cloud. The Data can be accessed over our webapplication and smartphone app (Available on Android and iOs) with graphical plots.
The Tensiometer TNS-03 consists of a cylindrical shaft with a porous ceramic cell and an attached upper part.
Die head contains the whole electronics with battery, solarpanel, LoRa-antenna and sensors.
Thanks to its low energy consumption and integrated solar panel, the TNS-03 tensiometer is particularly low-maintenance.
The LoRaWan Gateway serves the LoRaWAN soil moisture sensor as a gateway to the Internet - via a SIM card, but also, for example, at home via a network cable, the LoRaWan Gateway forwards the soil moisture data. The Lo(ng) Ra(nge) radio link can connect several devices over several kilometers (depending on the condition).
Art.-Nr.: 36-36-378
Connectors:
Art.-Nr.: 46-46-273
The measurements of the Tensiometer TNS-03 can be viewed comfortably on the Smartphone or Tablet (App available in Apple AppStore and Google PlayStore) or with the browser on PC/TV. As fast overview the most actual values are shown. With a push on a sensor a daily graphic is shown. In Landscape mode the date-range can be customized.
The data can be accessed with a browser visually and as Download.
For third Party products an API is available to provide the data in multiple different formats like json, csv, and xml.
You can set an upper and lower limit so that you are automatically
notified via the app and/or email if the suction pressure exceeds/falls below the limits.
Art.-Nr.: 36-36-429
ELMED Ltd.
Mitterweg 25
I-39100 Bozen - Italy
Soc. Cap. Euro 10.000,00
VAT Nr. 02725930214
Phone: +39 - 0471 - 97 72 36 / 97 32 76
Telefax: +39 - 0471 - 97 65 25
E-mail: info@elmed.it
