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CST Flow Meter for Irrigation and Landscape Automation Solutions
Quick Answer
Silver Automation Instruments supplies CST flow meters for irrigation and landscape automation solutions. Typical sizes cover DN15 to DN300 and flow ranges from 0.1 m3/h to 800 m3/h. Send your pipe size, pressure, temperature, and flow range for a quote.
Why a CST Flow Meter Matters in Irrigation and Landscape Work
In practice, irrigation water is not free. Pump energy, fertiliser, and labour all cost money. A CST flow meter on a mainline tells the operator how much water moves to each zone. The signal from the meter goes to a controller. The controller opens or closes solenoid valves based on that flow.
Most landscape systems run at 2 bar to 10 bar. Pipe sizes in commercial landscape jobs sit between DN25 and DN200. A meter with 4-20 mA HART output connects to the central controller. Zone control becomes straightforward. Do not use a meter with only pulse output if the controller expects an analog signal.
We have seen this signal mismatch on customer sites many times. A golf course in Australia installed DN80 electromagnetic flow meters on three irrigation mainlines. The controller recorded a flow drop of 15 percent in one zone. The maintenance team found a broken sprinkler head before turf damage spread.
Output Signals for Landscape Irrigation Automation
Landscape irrigation controllers read 4-20 mA signals. Some PLC and SCADA systems prefer Modbus RTU. A CST flow meter from Silver Automation Instruments can be ordered with 4-20 mA HART, RS485 Modbus, or pulse output. Specify the signal when requesting a quote.
If the irrigation site has a dosing system, the meter can also measure fertiliser flow. Fertigation lines are smaller. A nursery in Vietnam asked for a DN15 electromagnetic flow meter for a dosing line at 0 to 50 L/h. We supplied a unit with 4-20 mA output and a PTFE liner.
Power supply is another detail. Most field sites use 24 V DC or 220 V AC. Battery powered meters are available for remote landscape areas. State the power source in your enquiry.
Meter Type and Water Quality
Filtered and potable water suits electromagnetic flow meters. Reclaimed water with high salinity or conductivity may need an ultrasonic clamp-on or insertion meter. For most landscape irrigation lines, Silver Automation Instruments recommends electromagnetic flow meters because they have no moving parts.
If the water contains sand, choose a meter with a hard rubber or PTFE liner. If the pipe is PVC, an ultrasonic clamp-on meter can be installed without cutting the pipe. We have seen PVC lines in Southeast Asia where this method reduces downtime.
Electromagnetic flow meters need a minimum conductivity. Most units work from 5 µS/cm. Clean municipal water is fine. Ultrapure water is not suitable. Use an ultrasonic meter for very low conductivity water.
Key Parameters for a CST Flow Meter Quote
Before you send a request, keep these values ready. Pipe size in DN. Flow range in m3/h. Pressure in bar. Temperature in °C. Water quality class. Output signal type. Power supply. Chemical dosing rate if the meter sits on a fertigation line.
For a DN50 landsc
Installation Notes from Real Sites
Install the meter on a straight run. Ten pipe diameters upstream and five downstream work for most electromagnetic meters. If the straight run is short, use an ultrasonic meter with dual-path or a magnetic meter with reduced straight-run requirements.
Place the meter after the pump check valve. Never install it on the suction side unless the line is always full. Air bubbles cause reading spikes. A customer in the Middle East had an air pocket in a DN150 line. The flow reading jumped from 120 m3/h to 180 m3/h until the air vent was opened.
Here is a detail many engineers skip. Pressure and temperature limits matter. Standard irrigation meters handle 16 bar and 80 °C. For higher pressure, specify the maximum pressure at the pump discharge. For hot water or steam cleaning, use a meter rated for the right temperature.
CST Flow Meter Price and Lead Time
The price depends on pipe size, liner material, output type, and accuracy class. A DN50 electromagnetic flow meter for irrigation costs more than a DN25 unit because of the coil and body size. A DN100 meter costs more than a DN50 unit. Send your flow range and pipe size for a budget quote.
Standard DN15 to DN100 meters often ship in 5 to 10 working days. Larger sizes or special liners may need 3 to 4 weeks. Send your site location to Silver Automation Instruments for an exact schedule.
FAQ
What is the CST flow meter price for irrigation?
Price depends on pipe size, liner, and output. Send pipe size and flow range for a budget quote. A DN50 electromagnetic unit for irrigation may cost less than a DN100 unit with HART output.
Can the meter work with a landscape irrigation controller?
Yes. Order the meter with 4-20 mA or pulse output. Most controllers accept these signals. State the controller brand in your enquiry.
What is the minimum conductivity for an electromagnetic flow meter?
Most electromagnetic meters need at least 5 µS/cm. Clean municipal water is fine. Ultrapure water is not suitable.
Do you supply insertion meters for large landscape mainlines?
Yes. For DN300 and above, insertion electromagnetic or ultrasonic meters reduce cost. The meter body is smaller and fits into a standard ball valve.
How fast can Silver Automation Instruments deliver to Southeast Asia or Australia?
Standard DN15 to DN100 meters often ship in 5 to 10 working days. Larger sizes or special liners may need 3 to 4 weeks. Send your site location for an exact schedule.
Contact Silver Automation Instruments
Send your pressure in bar, temperature in °C, pipe size in DN, and flow range in m3/h. Add water quality details if the line uses reclaimed or fertiliser mixed water.
Tel: +86-25-68650347
WhatsApp: +86-25-52155837
WeChat: +86 15365082610
Website: flow-meter.com.au
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