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Irrigation Programs
Two programs can be set for each irrigation valve.
Through these programs it is possible to determine:
- Quantity or duration of irrigation cycle
- Quantity or concentration of fertilizer for each
fertilization pump
- EC requested
- pH requested
- Expected flow rate
- High or low flow for alarm and/or stop
- Optional addition of up to five co-valves to the leading
valve
- Attachment of the valve to an irrigation head and/or
water meter
- Definition of “Virtual” water meters ( a mathematical
sum of the number of meters located on the same line).
Manual Overriding
Any program can be manually and immediately activated or stopped through the controller, without changing the ongoing operation program.
Irrigation Sequences
Up to fifteen irrigation valves can be integrated in a single irrigation sequential group, in which they are opened successively one after the other. Fifty sequences are optional. In each sequence it is possible to determine:
- Starting and ending dates
- Daily or weekly operation of irrigation cycles
- Number of cycles per day
- Cycle intervals
- Start time of irrigation cycle
- End time, latest hour allowed for irrigation operation
- Order of valves in the sequential groups
- Definition of priorities among the sequences
- Operation according to external conditions - Yes/No
Filter Backflush
Up to ten groups are available for automatic flushing of filters according to time intervals, water quantities,
pressure differential or by an external signal.
Alarms
Up to ten alarm outputs to determine failure factors, as well as, the hours allowed for alarm’s activation. Each output can activate an external alarm system, such as a siren, a beacon, a beeper, telephone dialer, etc.
Additional Outputs
Control of a number of water pumps in order to regulate their flow rate and for failure control.
Note: All program versions may be periodically updated.
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Cable (CRTU)
In a conventional method, an electric wire is extended from each output or input to every unit in the field. The CRTUs are installed along a single, 3-wired cable (maximum 128 outputs per cable) drastically reducing the total cable investment in large fields. There are two basic models of CRTUs:
- A large unit that includes: 4 digital outputs for solenoid operation or a relay of the latch type, 12VDC; 4 digital inputs (dry contact); 2 analog inputs for alternate current 4-20mA or alternate voltage 0-10V.
- A small unit that includes: 2 digital outputs, 12VDC; 2 digital inputs.
A 24VDC voltage is supplied by the controller through the cable, so no batteries are needed. Each unit has a lightning protection device for the entire cable. Each unit is assigned a “private” code number using a Dipswitch. A single cable can be extended to a distance of at least four miles from the controller.
Radio (RRTU)
These units are suitable when there is a long distance between the valves or pumps and the controller or when the extension of cables is not feasible due to different obstacles. The RRTU receives a radio signal from the controller and performs opening or closing operations accordingly. Each unit consists of the following components:
- A radio receiver that can be adapted to frequencies approved for use in most countries.
- An interface card that includes two outputs for the operation of 12VDC latching solenoids or latching relays.
- A lithium battery, 3.6VDC, which lasts under normal field conditions two to three years.
- Each unit is loaded with its own “private” code number using a portable terminal.
Optional: A card with 4 outputs that can be extended with 1 - 2 more cards, all activated by a single receiver.
Wireless Transmission Unit for RRTU
Used to transmit data from the controller to the RRTUs. The transmission and reception range, under regular conditions, is up to two miles. Included are the following elements:
- A radio transceiver.
- An Encoder card between the controller and the transmitter.
- A 12V, 2.8A/H rechargeable battery.
- Multi-directional or uni-directional antenna unit
- Antenna lightning protection
- Hermetically closed plastic casing.
Optional: A card with 4 outputs that can be extended with 1-2 more cards, all activated by a single receiver.
Radio Transceiver Unit for Communications
to a PC
Used to transfer data from the controller to a central computer and vice-versa. Its main components are:
- A radio transceiver.
- A radio modem.
- A 12VDC power source.
- An antenna unit.
- Antenna lightning protection.
- Hermetically closed box.
The effective transmission range, under regular conditions, is approximately four miles. For information on increasing this range, call Netafim Customer Service. |
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Galileo™ Open Field System
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Galileo Open Field system can be remote controlled by central computer, which can communicate with a network of controllers up to 256 units by different methods. Operates on any standard PC with Windows 98 or any later version. The computer can perform other tasks when it is not used for control purposes. Datalogging and data transfer between controllers continues in the background while the computer is busy with other tasks. The Windows 98 based software presents graphically on-line activities and allows easy and simple setting of parameters. The software also includes storage and analysis of historical data.
No preliminary know-how in computers is needed for this user-friendly system.
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Direct connection by cable.
By a telephone modem through a telephone line.
By a cellular telephone modem (it must be verified that the cellular system is suited for data transmission).
Wireless communication using a radio link system as described above.
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Dimensions:
- Width: 9.8"
- Length: 3.3"
- Depth: 9.8"
- Controller Weight: 16 lbs.
- Power Supply: 110VAC
- Output Voltage: 24VAC
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About Netafim USA 
