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    Home / Bluetooth Low Energy sensors / Wireless soil moisture logger

    Wireless soil moisture logger

    €117.86 – €164.08

    Wireless soil moisture loggers are used to measure the amount of water in the soil. The loggers work with the Efento Logger application and allow, among others registering moisture levels, visualising the moisture levels on charts, and generating reports with data. The devices are powered by a battery that ensures their maintenance-free operation for a period of at least two years. Loggers communicate with smartphones using Bluetooth Low Energy technology. The maximum range of the logger is approx. 100 m in an open space. The loggers record 60,000 measurements in their memory. The logger is equipped with an Irrometer external probe 1.5 m lenght. The probe is resistant to weather conditions, including negative temperatures.

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    SKU: N/A Category: Bluetooth Low Energy sensors
    • Description
    • Additional information

    Product Description

    Wireless soil moisture logger

    • HIGH MEASUREMENT PRECISION

      Measurement accuracy: 0 – 200 Centibar (kPa)

    • WORKS WITH EFENTO LOGGER

      Data can be read over Bluetooth with a free mobile app

    • WATERPROOF PROBE

      The sensor is equipped with a waterproof probe with a length of 1.5m

    • LONG RANGE

      Up to 100 m in open space

    • LOW POWER CONSUMPTION

      Battery operation time: min. 2 years

    • LARGE BUILT-IN MEMORY

      Sensor saves 60 000 measurements in it’s memory

    Efento wireless soil moisture loggers are used to monitor the tension of water stored in the soil, which acts as a reservoir retaining water available to plants. The use of the sensor is designed to monitor the rate of water consumption, so you can accurately plan irrigation and assess the effectiveness of actions taken.

    The soil moisture logger consists of 2 components: a wireless logger and an  Irrometer external probe

    The probe placed in the soil is durable, made of stainless steel and plastic, does not react with the soil, is resistant to negative temperatures and easy to install.

    The logger is powered by a battery that ensures its maintenance-free operation for a period of at least two years. The loggers communicate with smartphones using Bluetooth Low Energy technology using the Efento Logger application. The maximum range of the sensor is approx. 100 m in an open space.

    How does the logger with an external probe work?

    The external probe that is placed in the soil is a resistive device that reacts to changes in soil moisture. Inside the probe there is an electrode placed in the granulate, which swells when water is taken from the soil. The granulate is enclosed in a hydrophilic material that provides good conductivity. As the soil dries, the water is removed from the sensor and the resistance measurement increases, and vice versa when the soil moisture increases, the resistance decreases. By using a coherent granulate filling the probe, the sensor has a high accuracy of the measurement.

    The correct reading of measurements allows accurate knowledge of soil moisture in the area of ​​the plant root system during irrigation periods and between them. The logger has the ability to configure the measurement in the range of 1 minute to 10 days. With a free mobile application, at any time, the user can check the measurements and display them on the chart that create soil moisture curves, showing how the moisture level changes. Slow growth means a gradual drying of the soil, which makes it possible to maintain the desired degree of hydration and the ability to plan the frequency of irrigation. Too rapid increase of 10-15 centibars in a few days means that the soil dries very quickly and additional measures should be taken.

    The data obtained from the measurements are recorded in the form of a graph and contain 5 intervals informing about the degree of soil hydration:

    Probe installation

    Before placing the probe in the soil for the first time, soak it in the water used for irrigation. The probe should always be installed moist.

    Action order:

    • put the probe in water for 30 minutes in the morning and let it dry until evening
    • put the probe in water for 30 minutes and let it dry overnight
    • once again place the probe in water for 30 minutes in the morning and let it dry until evening
    • place the probe in water and leave it there until the next day
    • the next morning, install a moist probe in the soil

    To place the probe in the soil, make a hole to the desired depth. Make a thick slurry from soil and water and place at the bottom of the hole, into the resulting “mud” push the probe. Surrounding the probe with a layer of moist soil allows maximum contact of the soil with the sensor and obtaining an accurate measurement.

    Working modes

    The Efento soil moisture logger works with:

    Efento Logger – is a report mode of operation, it is used for long-term observation of humidity measurements. The Efento sensor located in the measurement location saves in its memory climatic conditions, which the user can read at any time using a smartphone with the free Efento Logger application. Data can be downloaded using a smartphone, and then generate a report and share it using any application (e.g. send by email or send to disk “in the cloud”).

    Sensor's passport

    Sensor’s passport documents the entire “live” of a device. By accessing the sensor.efento.io website, the user can check all information about it: date of sale, warranty status, date of calibration, information on all service activities. In addition, the user can download all documents regarding his device – a duplicate of calibration certificate or service protocols. The service is available for free.

    Data security

    Data transmitted wirelessly between the sensor and smartphone/ Efento Gateway can be encoded. Thanks to that unauthorized persons cannot read measuring data, but only devices having the right key can decode measuring data transmitted by the sensor.

    Sensors are equipped with the wireless update of the software, what into the simplest manner you will bring them up to date to the latest version.

    Integration

    We believe that the Internet of the Thing consists of the integration of many data, their analysis and learning a lesson from their base. If you want to integrate Efento sensors with your software, with a platform in the cloud or with a mobile application we will make available to you essential documentation, libraries, SDK and willingly we will help with it.

    Additional Information

    MOISTURE SENSOR

    Measurement range: 0 – 200 cb (kPa)

    Measurement period: configurable from 1 minute to 10 days

    RADIO MODULE

    Communication: Bluetooth Low Energy (BLE)

    Radio frequency: 2,4 GHz

    Power: 2,5 mW (4 dBm)

    Range: up to 100 m (LOS)

    Communication standard: Bluetooth Smart (Bluetooth Low Energy, Bluetooth 4.0)

    Transmission frequency: 1 s

    BATTERY

    Battery: 3,6 V, size AA, capacity 2 700 mAh (replacable)

    Battery operating time: at least 2 years (measurement interval: 15 min)

    SIZE

    Dimensions: 27 x 71 x 71 mm

    Weight: 80 g

    Probe dimensions: 22 x 83 mm

    Probe weight: 67 g

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