『2.5 Inch Water Flow Meter: Flanged Irrigation and Main Distribution Probes』Related information(flow rotameter|digital flow meter|balo meter|hydraulic flow meter|volumetric meter|positive displacement meter|pitot tube flow meter|displacement meter|cfm meter|variable area flow meter|inline flow meter|differential pressure flow meter|calibrated flow meter|velocity meter|paddle wheel flow meter|oval gear flow meter|anemometer hvac|multiphase flow meter|doppler flow meter|thorpe tube flowmeter|heat flow meter)
2.5 Inch Flanged Water Flow Meter for Irrigation and Main Distribution Probes
Quick Answer: A 2.5 inch flanged water flow meter fits DN65 irrigation and distribution lines. It gives flow rate, total volume, and pulse or 4-20 mA output for pump control or SCADA. Silver Instruments builds this meter with a flanged spool body and optional insertion probes for main pipelines.
What This Meter Does
A 2.5 inch flanged water flow meter measures clean water, raw water, or treated effluent in a DN65 pipe. The flanged connection matches ANSI 150 lb or DIN PN16 hole patterns. Silver Instruments supplies model SIF-2500F as a full bore electromagnetic flow meter. The meter body sits between two flanges. No moving parts sit in the flow stream. This reduces wear from silt, sand, or chemical dosing carryover.
In practice, irrigation laterals and distribution headers often run partially full during startup. The meter still records flow once the pipe is full. Accuracy stays at plus or minus 0.5 percent of reading for the full bore model.
Typical Applications for DN65 Flanged Meters
Irrigation districts in Australia use this size on filtered water lines feeding sprinkler blocks. A vegetable farm in Vietnam installed this DN65 flow meter on a main distribution header after a sand media filter. Municipal water teams in the Middle East use the same DN65 flanged flow meter on district metering zones. Pump stations in Latin America use this same meter on discharge headers to verify pump output.
For larger mains above DN200, Silver Instruments also offers an insertion probe flow meter. The probe mounts through a 2.5 inch flanged ball valve. This design lets maintenance teams remove the probe without shutting down the line. It gives plus or minus 2 percent of reading on main distribution pipes.
Key Specifications
The standard 2.5 inch flanged electromagnetic flow meter from Silver Instruments, model SIF-2500F, includes a 316L stainless steel electrode pair and a hard rubber liner. PTFE and PFA liners are available for higher temperature or aggressive water. Pressure rating covers PN16 and ANSI Class 150. Flow range depends on pipe velocity. For DN65, a typical range is 0.5 to 100 m3/h. The transmitter accepts 24 V DC or 85 to 265 V AC. Outputs include 4-20 mA HART, RS485 Modbus RTU, pulse, and a digital display. Standard fluid temperature range is 0 to 60 °C. PTFE liner extends the range to 120 °C.
Water conductivity must be above 20 µS/cm for the electromagnetic sensor. Most river water, bore water, and treated effluent meet this requirement. Do not use this meter for demineralized water or condensate. Use a Silver Instruments turbine or ultrasonic meter for those fluids.
Installation and Commissioni_600x400.jpg)
A 2.5 inch flanged meter requires a straight run of pipe before and after the sensor. Keep five diameters upstream and three diameters downstream. Install the meter body with the flow arrow matching the pipe direction. Do not install the sensor at the highest point of a pipeline where air collects. For outdoor irrigation sites, use the IP68 sensor rating and a sun shield for the transmitter.
Most engineers skip the grounding ring on metal pipes. But on PVC or HDPE irrigation lines, add grounding rings or a grounding electrode. Otherwise the meter reading can drift. Tighten flange bolts in a cross pattern and check for leaks at low pressure before full line pressure.
Why Silver Instruments
Silver Instruments keeps this DN65 flanged water flow meter in stock for common irrigation and distribution jobs. Lead time is usually 3 to 5 working days for standard configuration. We ship to Australia, Southeast Asia, the Middle East, Latin America, and Africa. Every meter leaves with a calibration report. No third party calibration is required for irrigation or main distribution use.
In one case, a rice irrigation site in the Philippines replaced a mechanical propeller meter with a Silver Instruments DN65 electromagnetic meter. The customer removed four maintenance callouts in one dry season. The meter paid for itself in one crop cycle.
FAQ: 2.5 Inch Flanged Water Flow Meter for Irrigation and Main Distribution
What flow range can a 2.5 inch flanged water flow meter measure?
The full bore DN65 meter typically measures 0.5 to 100 m3/h. High velocity versions extend to 150 m3/h. Send us your minimum and maximum flow rate so we can confirm the right size.
Can this meter handle raw water with sand or silt?
Yes. The full bore electromagnetic design has no moving parts. A hard rubber liner protects the body. Flush sediment after the season to extend liner life.
Does the flanged version work on gravity lines?
Yes, but the pipe must be full at the sensor location. For gravity distribution lines, avoid a free fall downstream of the meter. Install the sensor in a low point where back pressure holds the pipe full.
What signals can I send to my SCADA or PLC?
Standard outputs are 4-20 mA HART, RS485 Modbus RTU, and pulse. The pulse output works for mechanical totalizers. Remote versions can include GSM or LoRa data loggers.
How do I get a price for the 2.5 inch flanged irrigation flow meter?
Send your pipe size, pressure in bar, water quality, flow range in m3/h, and required output signal to Silver Instruments. Tel: +86-135-1213-1526. Whatsapp: 86-135-12131526. WeChat: +86 13512131526. We usually reply within one business day.
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