About the Complete Irrigation Scheduling System:

All systems are built upon the ICT International Datalogger, which is optimised for the DB² data handling platform. Providing an all-in-one datalogger, with power management and data handling, the datalogger platform is expandable with optional communication and sensor expansion modules.

The systems contain all parts required for the installation of the system, enabling the deployment of the system from the box.

Data

The Complete Irrigation Scheduling Systems measure the following parameters which can be visualised in the DB² platform:

Tier 1 Sensors (IS-T1):

A low powered solution, these sensors are combined with a standalone data logger/communication system due to the very low power that these sensors consume. This low power consumption, combined with reliable and proven technologies make the ideal solution for widespread data collection networks across a study site.

• SPAC:
  • Tensiometer: Providing measurements of the soil water potential, available in various lengths, the tensiometer measures the __________ that water can move through the soil.
  • Dendrometer: Measuring at a high temporal frequency with a 0.0001 mm increment the contraction and expansion of the plant, the dendrometer provides a long-term indication of the response to available water, driven by the atmospheric demands. Available with either the band dendrometer, with 60mm of measurement range, or the pivot dendrometer for use on small stems and branches, with 40mm of measurement range.
• SPAC and ET:
  • Vaisala HMP60: For the measurement of vapour pressure deficit (VPD), a reliable, robust, and proven sensors is essential. The Vaisala HMP range of temperature and humidity sensors utilise a replaceable calibration chip that ensures high quality data is collected for the calculation of VPD – the atmospheric driver within the soil, plant, atmosphere continuum. The temperature/humidity sensor includes a matt radiation shield to reduce reflection, ensuring that there is minimal measurement interference.
• ET:
  • Wind (Calypso): A compact ultrasonic wind speed and direction sensor, the Calypso wind sensor measures gusts, direction, and speed at a user defined frequency. With no moving parts, the Calypso wind sensor is ideal for installation in long-term measurement and monitoring applications. With a compact profile, the Calypso used as part of an evapotranspiration installation any effects on other sensors are minimised.
  • Rain (PRP-02): A robust tipping bucket rain gauge with 0.2 mm resolution, the PRP-02 is mounted on the crossarm, alongside the other sensors ensuring the station is easy to install and transport.
  • Pyranometer (SP-421): With traceability to ISO9060, the Apogee SP-421 is a proven, reliable, calibrated pyranometer for the measurement of solar radiation. Ideal for shortwave radiation measurement in agricultural, ecological, and hydrological weather networks, the SP-421 is essential in the calculation of FAO Evapotranspiration models.
• Plant Water Use: (SDI-12 Sap Flow Sensor): Using the Heat Ratio Method (HRM), the SDI-12 Sap Flow Sensor is designed for accurate and consistent measurement of sap flow. From this, the water use can be calculated and subsequently applied to irrigation scheduling and water budget calculations. Bringing the proven HRM to an SDI-12 based system allows for fully integrated measurements within the Soil-Plant-Atmosphere Continuum. Available with 3 different length needle sets, the SDI-12 Sap Flow Sensor can be used to measure plant water use in crops, small stems (such as vines), or large established trees. When used within the DB2 platform, installation meta-data can be easily added via the dashboard, simplifying the calculation process.
• Power System: Supplied with the Low Power system containing a 10-watt solar panel and matching mount, and an internal 6,000mAh battery. The power system can be expanded with a supplementary 10-watt solar panel and mount to provide additional charge when used in low light conditions (EP-L).

Tier 2 Sensors (SPACWP-T2):

With external solar power, the Tier 2 sensors are ideal for long-term installation

• SPAC:
  • TM7 Tensiomark: An SDI-12 sensor that measures the soil water potential, the TM7 is a low maintenance sensor that is ideal for installation as part of a SPAC monitoring system.
  • Dendrometer: Measuring at a high temporal frequency with a 0.0001 mm increment the contraction and expansion of the plant, the dendrometer provides a long-term indication of the response to available water, driven by the atmospheric demands. Available with either the band dendrometer, with 60mm of measurement range, or the pivot dendrometer for use on small stems and branches, with 40mm of measurement range.
• SPAC and ET:
  • Vaisala HMP110: The HMP110 builds upon the benefits of the HMP60, but is a higher accuracy for both humidity (±1.5 %RH vs ±3 %RH) and temperature (±0.1 °C vs ±0.5 °C)
• ET:
  • Wind (Windsonic): A high-performance ultrasonic anemometer, for use in measuring up to 60m/s (26km/h) wind speeds. With no moving parts, ultrasonic anemometers are ideal for installation where access may be difficult, providing low ongoing costs and reliable data. The Windsonic is a low power solution that still provides high quality data for decision making and monitoring.
  • Rain (RIM-7499-STD): Stainless steel shell, copper collector, and brass tipping bucket, the RIM-7499 rain gauges are designed for long-term installations that require high quality rainfall data. With the included stand, the RIM-7499 rain gauge can be mounted above the ground to avoid ground-based debris blowing into the collector.
  • Pyranometer (SP-421): With traceability to ISO9060, the Apogee SP-421 is a proven, reliable, calibrated pyranometer for the measurement of solar radiation. Ideal for shortwave radiation measurement in agricultural, ecological, and hydrological weather networks, the SP-421 is essential in the calculation of FAO Evapotranspiration models.
• Plant Water Use: (SDI-12 Sap Flow Sensor): Using the Heat Ratio Method (HRM), the SDI-12 Sap Flow Sensor is designed for accurate and consistent measurement of sap flow. From this, the water use can be calculated and subsequently applied to irrigation scheduling and water budget calculations. Bringing the proven HRM to an SDI-12 based system allows for fully integrated measurements within the Soil-Plant-Atmosphere Continuum. Available with 3 different length needle sets, the SDI-12 Sap Flow Sensor can be used to measure plant water use in crops, small stems (such as vines), or large established trees. When used within the DB2 platform, installation meta-data can be easily added via the dashboard, simplifying the calculation process.
• Power System: Supplied with the Low Power system containing a 10-watt solar panel and matching mount, and an internal 6,000mAh battery. The power system can be expanded with a supplementary 10-watt solar panel and mount to provide additional charge when used in low light conditions (EP-L).

Tier 3 Sensors (SPACWP-T3):

The Tier 3 sensors provide a high-quality research platform for detailed measurement of the soil-plant-atmosphere continuum. Integrating the SDI-12 Psychrometer for continuous non-destructive measurement of plant water potential, along with a highly responsive and accurate temperature humidity sensor, the tier 3 sensor suite provides the benchmark system for researchers to build their experiments around.

• SPAC:
  • TM7 Tensiomark: An SDI-12 sensor that measures the soil water potential, the TM7 is a low maintenance sensor that is ideal for installation as part of a SPAC monitoring system for the absolute measurement of water potential.
  • SDI-12 Psychrometer: Enabling the simultaneous measurement of the plant water potential, the soil water potential, and the atmospheric demand, the SDI-12 Psychrometer revolutionises the study of the soil-plant-atmosphere continuum. Bringing the proven measurement technology from the PSY1 Psychrometer into and SDI-12 unit, the ability to continuously measure plant water potential at the same time every day from exactly the same plant,
• SPAC and ET:
  • Vaisala HMP155: The HMP155 provides a highly accurate, traceable, temperature and humidity probe for leading research applications. Individually adjusted and calibrated using a six-point calibration across humidity ranges from completely dry to near saturated, the HMP155 is the temperature and humidity sensor for high quality measurements.
• ET:
  • Wind (Windsonic 75): Measuring windspeeds up to 75m/s (270 km/h), the Windsonic 75 is a WMO standard (for wind gust measurement) solution for high quality data acquisition. With a higher resolution output for wind direction (0.1°) than the Windsonic, the Windsonic 75 will provide detailed data for analysis and model building.
  • Rain (RIM-7499-BOM): Taking the core structure of the RIM-7499-STD but increasing the accuracy to meet the requirements of national meteorological organisations, the RIM-7499-BOM is a high quality rain gauge that will provide accurate data for detailed decision making.
  • Pyranometer (SP-421): With traceability to ISO9060, the Apogee SP-421 is a proven, reliable, calibrated pyranometer for the measurement of solar radiation. Ideal for shortwave radiation measurement in agricultural, ecological, and hydrological weather networks, the SP-421 is essential in the calculation of FAO Evapotranspiration models.
• Plant Water Use: (SDI-12 Sap Flow Sensor): Using the Heat Ratio Method (HRM), the SDI-12 Sap Flow Sensor is designed for accurate and consistent measurement of sap flow. From this, the water use can be calculated and subsequently applied to irrigation scheduling and water budget calculations. Bringing the proven HRM to an SDI-12 based system allows for fully integrated measurements within the Soil-Plant-Atmosphere Continuum. Available with 3 different length needle sets, the SDI-12 Sap Flow Sensor can be used to measure plant water use in crops, small stems (such as vines), or large established trees. When used within the DB2 platform, installation meta-data can be easily added via the dashboard, simplifying the calculation process.
• Power System: Supplied with the Ultra High-Power system containing a 40-watt solar panel and matching mount, and an internal 26,000mAh battery. The power system can be expanded with a supplementary 40-watt solar panel and mount to provide additional charge when used in low light conditions (EP-U).

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