Delta-T Devices WET150 Quick Start Manual
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Delta-T Devices WET150 Quick Start Manual

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WET150 sensor
W
EC
T
ater content,
and
emperature sensor for irrigation monitoring
Quick Start Guide
version 1.1

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Summary of Contents for Delta-T Devices WET150

  • Page 1 WET150 sensor ater content, emperature sensor for irrigation monitoring Quick Start Guide version 1.1...

  • Page 2: Installation

    Sensing field Extends ~100mm into the soil, but field is strongest close to the rods - install carefully to avoid air gaps © 2021, Delta-T Devices Ltd Page 2...

  • Page 3: System Parts

    SM-AUG-100 45mm spiral auger Care and maintenance ◼ Do not touch the WET150 rods or expose them to other sources of static damage, particularly when powered up. ◼ Ensure that connectors are clean, undamaged and properly aligned before pushing the parts together.
  • Page 4 ◼ Auger a 45mm diameter hole, ~10° to vertical is recommended. ◼ Fit an extension tube to the WET150 – remember to fit the connector and pass the cable through the extension tube first. ◼ Push the WET150 into the soil, fully inserting the rods to ensure good soil contact.
  • Page 5 White Sensor power Wiring diagram for connecting a WET150 (or SDI-12 network) to the SDI-12 channel in the GP2 using the SMSC/lw-05 cable and the logger’s internal +12V Power channel. Note: the grey and brown wires are not connected and can be trimmed off.
  • Page 6 ◼ Click on Program and select Change. ◼ Right click on Channel 1 and select WET150 from the drop-down menu. ◼ To change the default settings, double click on an Input channel to open Input Channel Properties, where you can change the Units, Soil type and Data storage settings.

  • Page 7: Sdi-12 Commands

    The WET150 supports a full set of SDI-12 commands for configuring the sensor and its outputs and for taking readings. The full set can be found in the online WET150 User Manual (SDI-12 supplement), the following table lists just the 4 basic commands:...

  • Page 8: Specifications

    ± (6% + 10mS.m Accurate range: 0 to 1200mS.m Range Full range: 0 to 2000mS.m Temperature (WET150 must be fully buried to accurately measure soil temperature) Accuracy ± 1°C Accurate range: -20 to +50°C Range Full range: -20 to +60°C...

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