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Endress+Hauser Flow Meter: Proline Electromagnetic Instrument Specs
Quick Answer
Endress+Hauser Proline electromagnetic flow meters cover a wide DN range from 2 to 3000 mm. They measure conductive liquids from 0.5 µS/cm up to paste, with accuracy down to 0.1% o.r. and 0.01% o.r. repeatability. Standard process temperatures reach 180 °C, pressure up to 40 bar, and ATEX Zone 1 versions are available for hazardous areas. These specs match many Silver Automation Instruments magmeter models that serve the same oil & gas, water, food, and chemical sites across Australia, Southeast Asia, and South America.
What the Proline Electromagnetic Line Brings to an Engineer’s Desk
Endress+Hauser built the Proline series around sensor interchangeability. A Promag W sensor can mate with a Promag 10 transmitter or a Promag 400 remote display without changing the factory wiring. In practice, many plant managers in Indonesia and Vietnam keep one spare transmitter for three pipe sizes. That saves inventory cost. Silver Instruments clients often ask us for the same concept. Our AMF series electromagnetic meters also let you pair one converter head with DN15 to DN2000 sensors, using the same 4-20 mA HART output and pulse signal.
Key Specification Ranges You Will See in a Proline Data Sheet
Nominal diameter: DN 2 to 3000 for the Promag W lineage. For hygienic lines, Promag H goes from DN 2 to 150. Most water and wastewater orders fall in the DN 50 to DN 600 band. A desalination plant in Oman specified DN 400 Promag W with PTFE liner and Hastelloy C22 electrodes for seawater at 35 °C and 16 bar.
Liner and electrode materials: PTFE, PFA, hard rubber, and soft rubber liners. Electrodes in 1.4404 (316L), Hastelloy C276, tantalum, and platinum are standard. For abrasive mining slurries in Chile, engineers pick polyurethane liner and tungsten carbide electrodes. Silver Instruments supplies the same material combos, and we often recommend PFA plus Hastelloy C for diluted acids in chemical dosing skids.
Conductivity requirement: 0.5 µS/cm minimum for standard Proline. Demineralised water often needs more care. At 0.5 µS/cm, you get stable readings. But below 0.3 µS/cm, even a Promag can drift. We saw this on a boiler feedwater job in Malaysia. Silver Instruments magmeters also work from 0.5 µS/cm, and we always ask for actual µS/cm numbers before quoting.
Accuracy and repeatability: Proline meters claim 0.1% of reading (o.r.) for flow velocity above 0.5 m/s. Repeatability is 0.01% o.r. With a matched pair of caliper rings and a DAkkS calibration certificate, you push uncertainty even lower. Most engineering firms accept 0.2% o.r. for billing measurement in oil terminal pipelines. Silver Instruments magmeters hold 0.2% o.r. in the standard version and 0.1% o.r. as an option, tested on a NIST-traceable rig.
Process temperature and pressure: Standard Promag W works up to 180 °C and 40 bar. High-temperature designs reach 200 °C. Promag P for chemical applications handles 100 bar with a compact wafer body. For a polymer melt application at 190 °C and 25 bar in Brazil, a customer once asked us to match the Proline P300 spec. We supplied our AMF-HT with PFA liner and a remote transmitter mounted 3 meters away.
Outputs and communication: 4-20 mA HART, Profibus PA/DP, Modbus RS485, and Ethernet/IP. Profinet is available on the Promag 400 index. Most small-to-medium plants in Saudi Arabia still run HART to their PLCs. Silver Instruments meters ship with 4-20 mA HART plus pulse and RS485 Modbus as standard. We also stock USB to HART modems for field setup.
Where Proline Meters Fit in Real Plants
Water treatment: municipal raw water, flocculant dosing, and sludge lines. Promag L is the entry-level with an economic hard rubber liner. We see it in Vietnamese water utilities for DN 200 raw water intake. Wastewater: Promag W with EPDM liner and stainless electrodes handles 3% solids in aeration basin return sludge. Food and beverage: Promag H with polished stainless body and PFA liner meets CIP temperatures to 150 °C. A dairy in Kenya runs CIP at 85 °C and 2 bar with Promag H; Silver Instrum
Chemical: Promag P with PTFE or PFA liner and tantalum electrodes for acids. Promag 100 with an ultra-compact transmitter fits skids where space is tight. Oil and gas: Promag W with ATEX Zone 1 approval for produced water reinjection. A drilling fluids service company in Egypt ordered Silver Instruments magmeters for a mud return line at 10 bar, 60 °C, with abrasive-resistant polyurethane liner. We had the same Ex db IIC T4 certification.
How to Compare Silver Instruments Magmeters with Proline Specs
The Proline catalogue is deep. But here is the thing. When an EPC contractor or a system integrator in Peru sends us a specification sheet that calls out a Promag W DN 100, PN 16, PTFE, Hastelloy, 4-20 mA HART, IP68 remote, we can often propose our AMF310-AX100PTHC1 with identical face-to-face length. Dimensional interchangeability matters. We keep the same ISO 13359 short lay length so a field retrofit does not need pipe cutting.
Most engineers skip this part: check the liner vacuum resistance. Proline PTFE liners handle partial vacuum but need a protective flange in DN 300 and above. Silver Instruments standard PTFE liner holds full vacuum up to DN 250 without a protective ring. We talk about this detail on many customer calls.
Another comparison point is turndown ratio. Proline offers up to 1000:1 with the ultra-high precision version. Practically, 100:1 is enough for dosing pumps that turn down to 1% of full scale. Silver Instruments meters run a stable 100:1 turndown, and we verify it at our Nanjing flow rig before shipment.
Certificates and Approvals That Get an E+H Meter on Site
ATEX, IECEx, CSA, FM, NEPSI for hazardous areas. Marine certifications like DNV, ABS, and BV for shipboard use. Drinking water approvals including WRAS, ACS, and NSF 61. When a Middle Eastern water authority demands WRAS-approved liners, they often refer to the same materials E+H uses. Silver Instruments provides WRAS-approved EPDM and NSF 61 PFA liners, and we share the certificate without you asking.
Calibration certificates: E+H offers factory calibration accredited to ISO/IEC 17025 via DAkkS. Silver Instruments provides a NIST-traceable calibration report with every meter, and we can upgrade to an ISO 17025 CNAS certificate for an extra charge. A food factory in Thailand recently required CNAS for their export audit. We shipped the meters with the certificate in two weeks.
FAQ
What is the minimum conductivity for Proline electromagnetic flow meters?
0.5 µS/cm for most models. Some sensors need 5 µS/cm with certain electrode designs. Always give your actual fluid and temperature when requesting a quote.
Can Silver Instruments provide a direct drop-in replacement for a Promag W?
Yes, often for DN 15 to DN 600. We match face-to-face length, liner, electrode, and process connection. Send us the Endress+Hauser model code or the old tag plate photo to [email protected].
Do Silver Instruments magmeters support Profibus DP?
We offer Profibus DP as an optional output. Standard is 4-20 mA HART plus Modbus RS485. Tell us your communication protocol when you request pricing.
What is the typical lead time for a DN 150 electromagnetic meter with PTFE liner and Hastelloy electrodes?
Silver Instruments keeps bare sensors in stock and assembles to order. Typical lead time is 3 to 5 working days for standard models. Large diameters above DN 600 take 10 to 14 days. Air freight to Australia and Southeast Asia adds 3 to 5 days.
How do I get a price for a seawater flow meter with ATEX Zone 1?
Send your pipe size (DN), pressure (bar), temperature (°C), and electrode material preference to [email protected] or WhatsApp +86-25-52155837. We usually reply with a formal quote within 4 hours during Asia business time.
Silver Automation Instruments caters to water, chemical, food, and oil field teams who need reliable meters without long factory lead times. Call +86-25-68650347 or WeChat +86 15365082610 with your specs. We read real data sheets, not just brochures.