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McCrometer DURA MAG Electromagnetic Flow Meter: Specs & Review
Quick Answer
The McCrometer DURA MAG is a battery‑powered electromagnetic flow meter built for remote water and wastewater applications. It delivers ±0.5% of rate accuracy and works in full pipes down to 5 µS/cm conductivity. If you need a price for a DN50 to DN600 DURA MAG with GSM or Modbus output, email us your pipe size, pressure, temperature, and flow range.
What the DURA MAG Actually Does on Site
We talk to engineers in Southeast Asia and the Middle East every day. They often mention the same problem: their old mechanical meters jam in dirty water, and AC magmeters need mains power that simply is not there. The DURA MAG solves both. It takes a 3.6 V lithium battery, lasts up to 10 years at a 15‑second sampling rate, and has no moving parts. Think of it as a fit‑and‑forget meter for irrigation, well water abstraction, and distribution network monitoring.
Key Specifications That Matter
The DURA MAG line covers sizes from DN50 to DN600. The liner is hard rubber (EPDM), and electrodes are Hastelloy C‑276. This combination handles raw water, treated wastewater, and even brackish flows without flaking. Minimum conductivity is 5 µS/cm. We have seen it run on groundwater with 30 µS/cm without drift. Accuracy is ±0.5% of reading from 0.5 to 10 m/s, with a bi‑directional measurement option. The transmitter is IP68 rated. It survives submersion in a metering pit for weeks. A customer in Northern Vietnam uses six DURA MAG units inside flooded chambers during monsoon season—no failures so far.
Outputs and Connectivity
The integral converter gives you a choice: 4‑20 mA, pulse, Modbus RTU over RS485, or a GSM/GPRS module. We find that irrigation boards in Latin America often pick the GSM version. It pushes hourly totals straight to a SCADA or a cloud dashboard, and no one has to drive out to read a register. The display rotates in 90‑degree steps, so you can read it even when the meter is mounted vertically. Most engineers skip the local display after commissioning; they just rely on the remote data.
Power and Installation Realities
The standard battery is a 3.6 V, 19 Ah lithium pack. At a 1‑second update rate, life drops to about 2 years. At 15 seconds, you get close to 10 years. Because there is no wiring, the meter installs in about an hour—one flange to flange, one spool piece, done. We recommend at least 5 x DN straight pipe upstream and 2 x DN downstream. For DN300 and above, a lifting eye and support saddles are not optional; they protect the liner during installation.
What We See as Limitations
The liner is EPDM only. If you have hydrocarbons, ketones, or strong acids in your line, you need PTFE liner, which DURA MAG does not offer. The minimum line size is DN50, so a 4
How It Compares
Against an AC‑powered electromagnetic flow meter from Silver Instruments, the DURA MAG trades some accuracy for battery life. Our SI‑2000 series does ±0.2% and bi‑directional, but it needs 24 V DC. The DURA MAG is better for remote sites where no power exists. For effluent discharge metering under NPDES or similar permits, check your local regulation. Some auditors still want a mains‑powered meter with a local display verification. We have helped customers in Saudi Arabia get acceptance by adding a wireless pulse logger to the DURA MAG, which satisfied the audit trail requirement.
Real Price and Delivery
List prices for a DN100 DURA MAG with pulse output start around USD 1,850, but volume discounts exist. Lead times in Q4 2024 were 6–8 weeks from US stock. Silver Automation Instruments can supply McCrometer meters to our markets in Australia, the Philippines, Peru, and Oman with full documentation and calibration certificates. Send us an email at [email protected] with your pipe size, flow range, and preferred output. We will return a quotation within 24 hours.
FAQ
Can the DURA MAG measure seawater? Yes, if conductivity is above 5 µS/cm. Seawater typically has 53,000 µS/cm. The Hastelloy electrodes and EPDM liner work well in live seawater, but we recommend a short straight run and PTFE ground rings for high salinity to prevent galvanic corrosion.
What is the lowest flow velocity it can detect? 0.2 m/s with a 0–0.2 m/s cut‑off programmable in the menu. Below that, the transmitter outputs zero. This avoids false totals during no‑flow periods.
Can I use it for chilled water with glycol? Glycol mixtures reduce conductivity. At 20% glycol, conductivity can be 30–60 µS/cm, which is above the 5 µS/cm minimum. It works, but you must set the excitation mode to “Low Conductivity” in the advanced menu.
Does it handle reverse flow? Yes, the bi‑directional option displays negative flow and can totalize in both directions. You specify this when ordering. It costs about 12% more than the uni‑directional version.
Can I get a version with a remote mount display? No. The DURA MAG is compact only. If you need a remote display, the McCrometer Ultra Mag offers that. But most users want the DURA MAG exactly because it is a single piece with no cables.
For a fixed price or a technical cross‑check, reach us by WhatsApp at 86-135-12131526 or call +86-135-1213-1526. We keep stock of common sizes in our Nanjing warehouse and ship via DDP terms to many countries.
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