Progres SDI-12 Manual
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Progres SDI-12 Manual

Progres SDI-12 Manual

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Manual
SDI-12 transmitter
Transmitter for reading a tri-sensor for soil's volumetric water content (VWC)
or soil water potential, temperature, and EC (electrical conductivity)
It offers the following benefits:
• Reading such a sensor:
‒ TEROS - 12 Meter Group: VWC, EC, and temperature
‒ Aquacheck: 3 levels of VWC depth
‒ TEROS - 21 Meter Group: Soil water potential and temperature
• The transmitter adapts the signals coming from the sensor and generates an output in
standard 4-20mA current values.
• You can use a Module Reader to configure, from the transmitter itself, the soil variety and
the format of values that the sensor must deliver.
SDI-12
transmitter
Multilevel
sensor
through an SDI-12 communication bus.
SDI-12 transmitter
VWC + temperature + EC Sensors
CODE 06750004

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Summary of Contents for Progres SDI-12

  • Page 1 CODE 06750004 Transmitter for reading a tri-sensor for soil’s volumetric water content (VWC) or soil water potential, temperature, and EC (electrical conductivity) through an SDI-12 communication bus. It offers the following benefits: • Reading such a sensor: ‒ TEROS - 12 Meter Group: VWC, EC, and temperature ‒...

  • Page 2: Technical Characteristics

    This symbol indicates that electronic devices should not be disposed of along with household waste at the end of its useful life. The product must be taken to the corresponding collection point for recycling and properly treating electronic equipment in accordance with the national legislation. · User manual | SDI-12 transmitter...

  • Page 3: Installation

    • Do not place the transmitter cables next to power lines. Surface fastening hole Surface fastening hole Connecting The transmitter is provided with two 1.5m cable hoses that allow you to make different connec- tions more easily without the need to access the interior. User manual | SDI-12 transmitter ·...
  • Page 4 “Enable external 2” in low consumption mode* *Because the SDI-12 transmitter requires a long power supply time due to the SDI bus operating protocol, you can operate it with external modules by configuring the “low power mode.” This mode makes the transmitter reduce its consumption and only generates the 4-20 mA current when it receives an external enable signal (12V for at least 400ms, coming from the external module).
  • Page 5 Cellpack resin connection and derivation kits (www.cellpackiberica.com) can be used as connection elements. It is recommended that loose cables also be connected with an excess 3M NOTE connector to avoid possible short circuits or from them getting wet. User manual | SDI-12 transmitter ·...

  • Page 6: Consultation Menu

    • Soil type • Reading format • Low Power Mode Settings The “internal address” of the SDI-12 sensor itself is not relevant, since the NOTE transmitter only takes a reading from a single sensor. · User manual | SDI-12 transmitter...
  • Page 7 = 0 a = +6.771E-10 a = +1.03E-10 b = 0 b = -5.105E-6 b = -1.01E-6 c = +3.879E-4 c = +1.302E-2 c = +3.58E-3 d = -0.6956 d = -10.848 d = -3.7108 User manual | SDI-12 transmitter ·...
  • Page 8 This sensor gives a value between 0 and 100, which represents the soil’s volumetric water content index (VWC). To obtain the desired VWC value, the relevant equation must be applied according to the type of soil, which the SDI-12 transmitter already does internally: i.Mineral: iv.Mud-Loam:...
  • Page 9 True value 800 mV Logical value 000,0 % Calibration Point 2 True value 4000 mV Logical value 100,0 % Soil table in the Aquacheck sensor Soil Sensor Mineral Sand Clay Mud/Loam Loam Clay/Loam AquaCheck-4/-8 User manual | SDI-12 transmitter ·...
  • Page 10 N. of integers N. of decimals Sign Units Calibration Point 1 True value 800 mV 800 mV Logical value -9.0 -40,0 Calibration Point 2 True value 4000 mV 4000 mV Logical value -2000,0 +50,0 · User manual | SDI-12 transmitter...
  • Page 11 User manual | SDI-12 transmitter ·...
  • Page 12 Sistemes Electrònics Progrés, S.A. Polígon Industrial, C/ de la Coma, 2 | 25243 El Palau d’Anglesola | Lleida | España Tel. +34 973 32 04 29 | info@progres.es | www.progres.es R-2252-1...

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06750004

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