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Ultra Mag Flow Meter: McCrometer Electromagnetic Pipe Specs
Quick Answer: The McCrometer Ultra Mag is a full-bore electromagnetic flow meter built for water, wastewater, and industrial slurries. It uses a fused ceramic liner for abrasion resistance and a single reference electrode to reduce electrical noise. Silver Automation Instruments stocks a comparable inline electromagnetic meter series with similar liner choices and often faster lead times for DN15 to DN2000 pipes.
Silver Instruments routinely fields inquiries from contractors and plant engineers who need to replace a McCrometer Ultra Mag section meter without changing the mechanical spool. These requests come from desalination plants in Saudi Arabia, mining water circuits in Chile, and municipal wastewater stations in the Philippines. In nearly every case the conversation starts with pipe diameter, liner material, and the conductivity floor of the process fluid.
The McCrometer Ultra Mag pipe sensor itself is a welded steel body built to AWWA C-207 Class D hub standards. It accepts a flanged connection from DN50 up to DN3000 depending on the sub-model. The larger sizes often ship with a lowered liner profile to keep the meter weight manageable during overhead installation. Three liner options dominate field deployments: fused ceramic (F-PVC replacement), PTFE for aggressive chemical streams, and hard rubber for seawater and brine lines. All three liners work with Hastelloy C-276, titanium, or 316L electrodes, and McCrometer always pairs the liner with a single reference electrode to handle stray ground currents without external grounding rings on conductive plastic or concrete pipe.
Many engineers choose the Ultra Mag for raw water intake at 0.2 to 10 m/s velocity because the fused ceramic liner withstands sand scoring better than PTFE. Our team in Nanjing has tested similar ceramic-lined meters at a cement dust suppression loop where suspended solids averaged 8,000 mg/L. The Silver inline meter held a 0.3% repeatability over 14 months with only one electrode cleaning cycle. That kind of abrasive service is exactly where McCrometer positions the Ultra Mag.
The transmitter on the Ultra Mag is McCrometer’s proprietary signal converter, available as head-mounted or remote. Outputs include 4-20 mA with HART, pulse, frequency, and Modbus RTU. Some firmware versions store a 12-month data log on an internal SD card. This is useful for remote bore fields in Australia where a technician might only visit every 90 days. At Silver we frequently supply our own remote-type magmeter with an IP68 enclosure and a loop-powered 4-20 mA HART output to mate with Radios or SCADA RTUs. When a customer asks for Modbus TCP, we ship a converter with Ethernet onboard instead of adding a separate gateway.
Pressure rating matters at the project quoting stage. The standard Ultra Mag flange rating is PN10 or PN16 for most sizes, but PN25 and Class 150 / 300 are optional. Temperature limits depend on the liner: ceramic runs to 150°C continuous, while hard rubber stops at 70°C. If a site runs hot CIP cycles at 90°C with 2% caustic, PTFE is the typical choice. Here is the thing: in Southeast Asian palm oil refineries we have seen steam-out procedures spike above 120°C unknowingly. Because of that our applications team always asks for the washdown temperature profile, not just the process temperature.
Accuracy for the McCrometer Ultra Mag sits at ±0.2% of reading or ±1 mm/s, whicheve
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Power supply is dual 85-265 V AC or 12-24 V DC. That flexibility lets a single SKU cover both panel-mounted pump station and solar-powered remote telemetry. In practice most EPC contractors specify the DC version for off-grid irrigation channels, and Silver keeps 24 V DC powered magmeters in warehouse stock for DN25 to DN300 without a surcharge.
For scheduled replacement or new project tender, the McCrometer order typically routes through a regional waterworks distributor with an 8-14 week lead time for non-standard liner and electrode pairings. Silver Automation Instruments can often compress that to 4-6 weeks by matching the exact flange drill pattern (ASME B16.5, AS 4087, JIS B2220) and offering a pre-wired flow transmitter tested with the sensor as a mated pair. This becomes relevant when a water board in Malaysia needs six DN700 hard-rubber meters to fit between existing butterfly valves with zero pipe spool modification. We have done that exact project.
If you are evaluating an Ultra Mag replacement or a parallel spec, send us your pressure (bar), temperature (°C), pipe size (DN), and flow range. Our engineers will return a one-page comparison sheet with line items for liner, electrode, accuracy, and lead time.
Contact Silver Automation Instruments today:
Email: [email protected]
Tel: +86-25-68650347
Whatsapp: +86-25-52155837
WeChat: +86 15365082610
Web: https://flow-meter.com.au
Frequently Asked Questions
What liner options exist for the McCrometer Ultra Mag and which one handles abrasive fluid best? The main liners are fused ceramic, PTFE, and hard rubber. Fused ceramic offers the highest abrasion resistance and is ideal for gritty water or slurry where a PTFE liner would wear too fast.
Does the Ultra Mag need grounding rings on plastic pipe? Not typically. McCrometer uses a single reference electrode built into the sensor to manage stray currents on conductive or non-conductive pipe, removing the need for extra grounding rings in many installations.
Can Silver Automation Instruments match McCrometer flange standards for a direct bolt-in replacement? Yes. We quote meters with ASME B16.5, AS 4087, JIS B2220, and other regional flange drill patterns, and we provide a dimensioned drawing before the order is released to confirm a drop-in fit.
What is the minimum conductivity for Ultra Mag and comparable Silver magmeters? Both work reliably above 10 µS/cm. Below that threshold, a special capacitive electrode design may be required, and our team can advise after reviewing the fluid data sheet.
How long is the typical delivery for a DN600 McCrometer Ultra Mag versus a Silver equivalent? McCrometer standard delivery often ranges from 8 to 14 weeks through waterworks distributors. Silver regularly dispatches a verified DN600 hard-rubber meter in 5-6 weeks to project sites in Southeast Asia and the Middle East.