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2 Inch Digital Flow Meter: Two-Inch LCD Smart Electronic Pipe Monitors
Product Overview and Quick Answer
Quick Answer: A 2 inch digital flow meter with an LCD smart electronic pipe monitor gives local flow rate, total volume, and alarm status directly on DN50 pipe. It is a practical choice for water, fuel, chemical, and food lines where operators need a direct reading without opening a control panel. Silver Automation Instruments supplies these meters with 4-20 mA, pulse, RS485 Modbus, and optional HART outputs for customers in Southeast Asia, Oceania, Latin America, Africa, and the Middle East.
Most engineers choose this meter when a DN50 line needs a local display and a standard output. The LCD monitor shows the current flow rate and the accumulated total. The display can also show battery voltage or a low flow alarm. Because the display is built into the meter, the operator does not need a separate panel or a laptop to check the process.
Applications Where a 2 Inch Digital Flow Meter Fits
We see this size on cooling water loops, reverse osmosis skids, diesel transfer lines, chemical dosing systems, and compressed air branches. A water treatment contractor in the Philippines ordered 12 units for a desalination plant with DN50 stainless steel pipe. They needed local LCD displays because operators walk the skid and record totals every shift.
Food and beverage plants use the same meter for wash water and CIP return lines. Marine operators install it on fuel oil transfer lines. Paint and coating manufacturers use it for solvent batching. In practice, the 2 inch size is common because many skid pumps and transfer lines already use DN50 or 2 inch connections.
Technical Details Buyers Should Confirm
We ask for five details before quoting. Pipe size comes first. A 2 inch digital flow meter must match DN50 flanges, threads, or tri-clamp connections. Flow range matters next. For water, a 2 inch line often runs from 2 m3/h to 40 m3/h depending on pump capacity. For diesel, the typical range may be 1 m3/h to 20 m3/h. Pressure and temperature affect seal and liner selection. Standard EPDM suits water to 80 °C. PTFE or FKM suits solvents and many chemicals.
Output type is next. Many customers specify one of three signals. A pulse output works for batching and totalizer systems. A 4-20 mA signal works for PLC and panel meter input. RS485 Modbus works when you want digital data on a SCADA screen. Some models include two outputs in one compact monitor. The LCD display can show rate, total, and a low battery warning on battery powered units.
Wetted material is last. 304 stainless steel bodies cover many water and oil jobs. 316L stainless steel is common for seawater and chemical lines. Food grade models use tri-clamp connections and FDA approved materials. A customer in Indonesia asked for a 2 inch food grade electromagnetic flow meter with a backlit LCD and 4-20 mA plus pulse. The syrup viscosity was around 200 cP and the process temperature was 40 °C. We supplied a meter with 316L electrodes and a PTFE liner.
Installation Notes for DN50 Lines
Most 2 inch digital flow meters install in a straight run. A common rule is 10 pipe diameters before the meter and 5 pipe diameters after the meter. For a DN50 line, that means 500 mm of straight pipe upstream and 250 mm downstream. In practice, many compact installations use a straight run of 300 mm and still get stable readings because the line runs full and the velocity is steady.
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Choosing the Right Flow Technology
Electromagnetic flow meters work well for water, wastewater, slurry, and any conductive liquid. The liquid must have a minimum conductivity, often 5 µS/cm. A 2 inch electromagnetic meter has no moving parts and handles dirty water with less maintenance than a turbine meter. Do not use a turbine meter on dirty water with sand. The bearing wears quickly. Spend a small amount more on an electromagnetic flow meter for that service. For clean water and lower budgets, a turbine or paddle wheel digital flow meter with an LCD display works. For diesel and fuel oil, an oval gear flow meter with LCD totalizer is common because it measures small volumes accurately. For steam and compressed air, a vortex flow meter with integrated LCD and temperature pressure compensation may be more suitable.
Silver Automation Instruments supplies all these technologies with 2 inch connections. But the final choice depends on the fluid. Send us your pressure in bar, temperature in °C, pipe size DN, flow range in m3/h or L/min, and signal type. For steam and gas, include flow in kg/h. We will recommend one model and send a quotation within 24 hours on business days. Contact us at flow-meter.com.au, Tel +86-25-68650347, or WhatsApp +86-25-52155837. WeChat is +86 15365082610.
FAQ: 2 Inch Digital Flow Meter and LCD Pipe Monitor
What is the accuracy of a 2 inch digital flow meter? It depends on technology. Electromagnetic meters typically offer 0.5 percent of reading from 0.3 m/s to 10 m/s. Turbine meters often offer 1 percent of reading. Oval gear meters can offer 0.5 percent of reading for oil. The LCD display is an indicator and does not add accuracy limits.
Can I install this meter in a horizontal pipe only? Electromagnetic and oval gear meters can work in horizontal or vertical pipes. The main requirement is a full pipe. For gravity flow and partially filled pipes, use an electromagnetic flow meter with an empty pipe detection option.
Does the 2 inch digital flow meter include a battery powered version? Yes. Battery powered electromagnetic meters and turbine meters with an LCD totalizer are available. Battery life often lasts 3 to 6 years depending on measurement interval and display refresh rate. ATEX Zone 1 and Zone 2 models are also available on request for hazardous areas.
What is the difference between a flow meter and an electronic pipe monitor? A flow meter includes the sensor and transmitter. An electronic pipe monitor may only display the signal from an external flow sensor. In many 2 inch models, the sensor and LCD monitor are built into one compact unit.
What information should I send for a fast quote? Send the fluid name, pipe size, pressure, temperature, flow range, connection type, output signal, and wetted material. You can contact Silver Automation Instruments by Tel +86-25-68650347 or WhatsApp +86-25-52155837. WeChat is +86 15365082610.