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Promag Flow Meter: Endress+Hauser Proline Electromagnetic Instrument Specs
Quick Answer: Endress+Hauser Promag electromagnetic flow meters cover DN15 to DN2000 with accuracy up to 0.2 percent, 4-20 mA HART output, and liners such as PTFE, PFA, or hard rubber. Silver Automation Instruments supplies a compatible SIL-EMAG electromagnetic flow meter series with similar body, liner, electrode, and output specs for water, wastewater, chemical, food, and marine projects. Send us your fluid, pipe size, pressure, temperature, and flow range for a direct price comparison.
Promag is a family of Proline electromagnetic instruments from Endress+Hauser. Engineers often specify Promag W for water and wastewater, Promag P for chemical and hygienic processes, and Promag H for food and beverage lines. The main selection points are liner material, electrode material, process connection, and output protocol.
Common Promag Flow Meter Specifications
The Promag W covers DN25 to DN2000 for water, wastewater, and utility applications. Pressure ratings run from PN10 to PN40 depending on the body size. The standard liner is PTFE or polyurethane. Electrodes are 316L, Hastelloy C, tantalum, or platinum. Accuracy is 0.5 percent of rate for most sizes. The Promag P covers DN15 to DN600 with PFA liner and Hastelloy C electrodes. It handles acids, caustic, and chemical dosing lines. Promag H is a sanitary version from DN15 to DN150 with FDA approved liner materials.
Outputs on Promag instruments include 4-20 mA HART, Profibus PA, Modbus RS485, and pulse or frequency. Some models have local display and diagnostics. Approvals include ATEX Zone 1, IECEx, and IP67 or IP68 remote sensors. Power supply is 85 to 260 V AC or 20 to 30 V DC depending on the transmitter version.
Where a Promag Replacement Makes Sense
Many water and chemical projects specify Promag because it is a known brand. But brand loyalty adds cost and lead time. Here is the thing. An electromagnetic flow meter with the same liner, electrode, accuracy class, and output can work in the same pipeline. Silver Instruments keeps DN15 to DN300 SIL-EMAG meters in stock for standard water and wastewater duties.
Last year a customer in Vietnam asked us about a Promag W DN100 replacement for a seawater intake line at a desalination plant. The original quote was over budget and had a 7 week lead time. Our SIL-EMAG DN100 with PTFE liner and 316L electrodes shipped in 5 days. The customer used the existing signal cable and HART input on their PLC.
Because seawater and brine applications need reliable grounding, we supply grounding rings or a third electrode option. The same rule applies to chemical dosing lines. You need the right wetted material. We have seen this on customer sites many times. A site saves money on liner material and then replaces the meter after six months.
Key Sizing Questions
What is your minimum and maximum flow rate. What is the
What pressure and temperature. Standard Promag sensors handle fluid temperatures from -10 to 80 °C with PTFE liner. High temperature versions can go to 180 °C. Pressure ratings drop at higher temperatures. Send us your pressure in bar and temperature in degrees Celsius.
Frequently Asked Questions
Can Silver Instruments replace a Promag W in a wastewater line?
Yes. For wastewater lines from DN25 to DN2000, we supply SIL-EMAG meters with PTFE or polyurethane liner, 316L or Hastelloy electrodes, and 4-20 mA HART output. The face to face length follows common ISO 13359 dimensions for DN15 to DN600. For larger sizes, confirm the installation length before ordering.
What is the accuracy of a Promag electromagnetic flow meter?
Promag 10 and Promag 50 series are often 0.5 percent of rate. Promag 400 and Promag 800 can reach 0.2 percent of rate under reference conditions. Our SIL-EMAG standard accuracy is 0.5 percent of rate. For batch dosing or custody transfer, we can supply 0.2 percent versions.
What liner and electrode materials should I choose for chemical dosing?
For acids and caustic, PFA liner with Hastelloy C electrodes is a safe starting point. For sodium hypochlorite, use PTFE or PFA liner with titanium electrodes. For food and beverage, use PFA liner with 316L electrodes and tri clamp connections. Tell us your chemical name and concentration.
What is the minimum straight pipe run?
Most engineers skip this part until the meter reads unstable. Most Promag electromagnetic meters need 5D upstream and 3D downstream straight pipe from a valve or elbow. If you have a pump upstream, allow 10D upstream. Some SIL-EMAG models can work with 3D upstream and 2D downstream in congested pump skids. Give us your pipe layout and we will check it.
How do I get a price for a Promag replacement?
Send us your fluid type, pipe size DN, pressure in bar, temperature in degrees Celsius, flow range in cubic metres per hour, and required output signal. We will reply with a Silver Instruments SIL-EMAG quote, lead time, and freight options.
Contact Silver Instruments for a Promag Specification Review
If you are checking Promag flow meter specs for a project in Southeast Asia, Oceania, Latin America, Africa, or the Middle East, send us the datasheet or tag number. We will match the process connection, liner, electrode, and output. You can reach us at Tel: +86-135-1213-1526, Whatsapp: 86-135-12131526, or WeChat: +86 13512131526. Our team handles technical selection for water, wastewater, chemical, food, and marine applications.
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