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『50 GPM Flow Meter: Specifications for middle-tier volumetric inline liquid sensors.』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)
50 GPM Flow Meter: Specifications for Middle-Tier Volumetric Inline Liquid Sensors
Quick Answer: A 50 GPM flow meter equals about 189 liters per minute or 11.3 cubic meters per hour. For water, wastewater, and light chemicals, Silver Automation Instruments recommends a DN50 inline electromagnetic meter. For diesel, oil, or non-conductive solvents, choose a DN50 oval gear meter with pulse output.
Flow Range and Pipe Sizing for 50 GPM
A 50 GPM volumetric liquid sensor is usually installed on a DN50 or 2 inch line. Flow velocity stays close to 2.2 m/s. If the same flow moves through a DN40 pipe, velocity rises above 6 m/s. That shortens electrode life and increases pressure drop. Use a DN50 electromagnetic flow meter for cooling water, raw water, or effluent. Use a DN50 oval gear meter for diesel, palm oil, or solvents.
Middle-tier inline sensors typically include a local LCD, 4-20 mA output, pulse output, and RS485 Modbus. Housing rating is IP65 or IP67. Wetted parts are 316L, PTFE, or hard rubber for electromagnetic types. Oval gear types use aluminum or 316L bodies with PPS or PEEK gears.
Electromagnetic 50 GPM Inline Meter
For conductive liquids above 20 µS/cm, choose an inline electromagnetic flow meter. Accuracy is 0.5 percent of reading. Power is 24 VDC or 220 VAC. Process connection is flanged or tri-clamp. Liner is PTFE or hard rubber. Electrodes are 316L, Hastelloy, or titanium. Temperature range is -20 to 120 degrees Celsius. Pressure rating is PN16 or ANSI 150 by default. This meter fits water intake, effluent discharge, and chemical dosing lines.
Here is the thing. A 50 GPM electromagnetic meter has no moving parts. Maintenance stays low. But the pipe must stay full. We have seen this on customer sites many times. Install the sensor in a low point or an uphill run. Avoid free discharge above the sensor.
Oval Gear 50 GPM Inline Meter
For non-conductive liquids such as diesel, solvent, or palm oil, an oval gear flow meter is a better match. Middle-tier oval gear sensors deliver 0.5 percent accuracy for clean liquids and 1.0 percent for liquids with higher viscosity. Maximum viscosity is around 1000 cP. Standard flow range covers 10 to 200 L/min. Process connections are NPT, BSP, or flanged. Body material is aluminum or 316L. Gears are PPS or PEEK. Output is pulse or 4-20 mA.
We supplied an oval gear meter last year to a paint manufacturer in Vietnam. They measured solvent at 45 degrees Celsius with a 316L body and PEEK gears. After 8 months, the pulse output still matched the batch controller without drift.
Coriolis 50 GPM Meter for Mass and Volume
If you need mass flow, density, and volume in one device, a Coriolis mass flow meter from Silver Automation Instruments works at 50 GPM. It is not a pure volumetric sensor, but it reports volumetric flow as a derived value. Accuracy reaches 0.1 to 0.2 percent of rate. Pressure drop is higher than an electromagnetic meter. Use it for syrup, molasses, LPG, or chemical feed where density changes. Process connection can be DN40 or DN50. Wetted parts are 316L or alloy C22.
Output and Integration for Middle-Tier Sensors
Most 50 GPM flow meters from our stock support 4-20 mA analog, pulse, and RS485 Modbus RTU. Electronics are isolated. Local display shows flow rate, total flow, and diagnostic
Integration is simple with a PLC or a panel meter. The pulse output can feed a batch controller directly. So you do not need an extra converter for basic batching.
Ask for a calibration certificate if the meter is used in ISO audited processes. We can ship with a certificate traceable to CNAS. The default accuracy statement is valid for water calibration. For oil or chemicals, we can run a separate calibration at our Nanjing workshop.
Material and Pressure Ratings
Do not overspec the wetted material. Most water lines use 316L electrodes and a hard rubber liner. Chemical lines use PTFE liner and Hastelloy electrodes. Food and beverage lines need 316L body or tri-clamp connection with FDA approved materials. For diesel and oil, an oval gear meter with PPS gears and aluminum body is enough. Pressure ratings are PN16 for most flanged meters, PN40 for high pressure Coriolis, and PN10 for large insertion types.
Temperature limits matter. Standard electromagnetic sensors work from -20 to 120 degrees Celsius. Oval gear meters work from -10 to 100 degrees Celsius. Coriolis mass flow meters extend from -50 to 150 degrees Celsius. If your liquid is outside this range, tell us in the inquiry.
Pricing and Delivery
Middle-tier 50 GPM flow meters from Silver Automation Instruments sit between low-cost plastic sensors and high-end custody transfer meters. A typical DN50 electromagnetic meter with 4-20 mA and RS485 starts around USD 480 to 650 depending on liner and electrode grade. An oval gear meter for diesel starts around USD 350 to 520. A Coriolis meter for 50 GPM starts near USD 2800. These are FOB Nanjing prices. Delivery is usually 5 to 12 working days for standard models.
Send us your liquid type, pipe size, pressure in bar, temperature in degrees Celsius, and flow range in GPM or m3/h. Contact Silver Automation Instruments at Tel +86-135-1213-1526, WhatsApp 86-135-12131526, or WeChat +86 13512131526. Visit flow-meter.com.au for the full catalog. We reply within 12 hours with model selection and a formal quotation.
Frequently Asked Questions
What is 50 GPM in m3/h?
50 US GPM equals about 11.3 cubic meters per hour or 189 liters per minute. Use 11.3 m3/h when sizing a DN50 line with a flow velocity near 2.2 meters per second.
Can a 50 GPM flow meter measure diesel?
Yes. An oval gear flow meter works for diesel because diesel has low conductivity and an electromagnetic meter cannot read it. Specify a 316L body and PEEK gears for long service life.
Which sensor has no moving parts?
An electromagnetic flow meter has no moving parts. It works only when the liquid conductivity is above 20 µS/cm. It suits water, wastewater, acids, and slurries.
What output do I need for batching?
Pulse output is enough for a batch controller. If you need remote monitoring, add 4-20 mA and RS485 Modbus. HART is optional for plant asset systems.
How do I get a price for a 50 GPM meter?
Send liquid type, pipe size, pressure, temperature, and flow range to Silver Automation Instruments. Use WhatsApp at 86-135-12131526 or call +86-135-1213-1526. Ask for a middle-tier model and mention your industry.