Irrigation Channel Measurement

Application Background

Printer Friendly Version

Open-channel irrigation water intakes can be monitored for water level / flow and they can be optionally controlled by opening and closing a gate to deliver programmed flow.

Unidata-Irrigation Channel Measurement

This technology can save water and cost of water and can eliminate the hands on requirements of a manual system. Such systems enable irrigators to monitor and control the water they are allowed to take from rivers and streams for irrigation. These range from basic monitoring-only to an automated and telemetered solution, where irrigators can access their system remotely via the Internet using a Smartphone, as if they were at the site.

Application Detail

The simplest option is monitoring-only. However many clients opt for full automation – with automatic gate control – which reduces the need to carry out manual tasks such as adjusting gates an downloading data.

Open-channel irrigation water intakes can be monitored for water level / flow and they can be optionally controlled by opening and closing a gate to deliver programmed flow.

A typical system is comprised of these interlinked parts:
• A flow measurement section, a weir/flume fitted with a water sensing structure
• A Neon Remote Terminal or Module for logging data and optionally, transmitting it.
• An optional inlet gate structure with gate control system
In the basic monitoring system, the abstracted flow is measured and recorded by 6541 Precision Water Level Instrument. This option may be sufficient where there is no gate control or when an irrigator is happy to control the flow with a manually-operated gate and periodically download flow data.
In an automatic monitoring system, a control gate automatically adjusts its position to maintain the flow within a user programmed target range. The gate controller receives flow rate information from the flow measurement instrument and compares it with the target. If the flow is lower than the target the controller increases the gate opening to increase the flow and vice versa. The gate controller adjusts the gate to keep the flow on target. Because the Neon system is Internet-capable it also enables you to monitor the site and allows you make changes to the flow target, without having to visit the site.

Irrigation Channel Measurement-Starflow 6526H Instrument

It allows you to view activity, data and to change flow settings via the Internet, saving time and reducing operational costs. Telemetry of data, between the site and the Neon server, is possible anywhere there’s cellular or satellite coverage at the site.
Neon provides a window on your irrigation monitoring system. You can check it remotely at any time, or change flow targets (for sites with flow control gates), by viewing secure data from your telemetered sites over the internet. And you don’t have to do this from your desktop computer. Your Android Smartphone can provide a mobile view of flow and gate control status, wherever there’s cellular coverage. If your site has a control gate, you can also use your phone to change the flow. If ‘out-of-range’ flows or other malfunctions should occur, with telemetered sites, you can receive programmed alarms via text or email.
Any required flows can be programmed allowing irrigators to set exact flow requirements. The weir is usually hydraulically coupled to the stilling well. The Neon Remote Module converts water level from the sensor to flow rate.
It also provides feedback for the gate controller and can be accessed by a standard web browser.

irrigation monitoring system

Typical Configuration

Options for Application Specific Instruments / InputsUnidata Part NumberDescription
Ultrasonic Doppler Instrument - Velocity and Depth6526H-21Ultrasonic Doppler Instrument 0-2m
Ultrasonic Doppler Instrument - Velocity and Depth6526H-51Ultrasonic Doppler Instrument 0-5m
Water Level Instrument6541C-11WLI with 500mm Pulley and Alkaline Battery Metric Version (Imperial version available)
Float6541F-115WLI Float - Cylinder 115mm Dia. (Other options available)
Float Line6541D-MWLI Beaded Float Line Metric (Imperial version available)
Options for Neon Telemetry - NRT / RTU / Field UnitsUnidata Part NumberDescription
Cellular RTU 3G2013F-AB03Neon Metering Module 3G with Antenna and Li Battery
Cellular RTU 4G2013F-AB04Neon Metering Module 4G with Antenna and Li Battery
Cellular RTU 3G - Industrial2016F-AB03Neon Remote Terminal 3G with Antenna and Li Battery
Cellular RTU 4G - Industrial2016F-AB04Neon Remote Terminal 4G with Antenna and Li Battery
Low Earth Orbit Satellite Globalstar2015E-AB0Neon Remote Terminal - Satellite Globalstar Modem with Antenna and three Li Batteries
Ethernet2017E-0B0-1 or 3NRT Ethernet with single or triple Ethernet Ports
with three Li Batteries
Equatorial Orbit Satellite - Inmarsat2018E-AB0-1 or 3NRT Ethernet with single or triple Ethernet Ports
with three Li Batteries
LCD Display2500ENRT LCD Display
NRT Field Termination Strip2103F2015E,2016F,2017E, and 2018E NRT FTS
NRT Firmware Option2303A-8M8M Extended Memory Option
NRT Firmware Option2303A-8M-CAM8M Extended Memory & Serial Camera Option
NRT Firmware Option2303A-CAMSerial Camera Option
Options for Neon Application Software - Customer ServerUnidata Part NumberDescription
Neon Application Software2302ANeon Server Software Licence Incl 5 NAL
Neon Application Software2302A-10Additional 10 NRT Access Licences
Neon Application Software2302A-20Additional 20 NRT Access Licences
Neon Application Software2302A-50Additional 50 NRT Access Licences
Options for Neon Application Software - Unidata ServerUnidata Part NumberDescription
Neon Application Software2301ANeon Data Initial Subscription Setup Fee
Neon Hosting Service2301A-01Neon Data Service Fee for 1-50 NRTs
Neon Hosting Service2301A-02Neon Data Service Fee for 51-100 NRTs
Neon Hosting Service2301A-10Neon Data Service Fee Metering
Options for Conventional Dataloggers / Field UnitsUnidata Part NumberDescription
Standards Starlogger6004D-11Red Logger 512K with Alkaline Battery
Display Starlogger6004D-21Blue Logger 512K with LCD and Alkaline Battery
Prologger7001D-11Green Logger 1M with LCD and Alkaline Battery
Micrologger8010C-EURMicrologger 512K
Starlogger Field Termination Strip6103E6004D FTS
Prologger Field Termination Strip7100E7001D FTS
Starlog V4 Management Software6308A-AUEStarlog V4 Full Licence Key