Question 1

How should I select the LGF-PA66 for booster pumping stations and high-rise building zone metering?

Accepted Answer

Secondary (booster) supply systems have two metering positions with different requirements: the station master meter and the per-building zone meter.

Station master meter: downstream of VFD-driven booster pumps, flow swings hard with speed changes and pump starts produce water hammer. The LGF-PA66 has no moving parts (hammer-tolerant), an unobstructed tube and near-zero pressure loss, so it does not erode pumping efficiency. Order ±0.5% or ±0.2% depending on billing duty, and size it at 1.0–1.5× rated pump flow — an oversized meter spends its life below the accurate velocity window.

Building zone meter: day/night flow ratios of 10:1 are normal and the night minimum is the leakage indicator, so turndown rules. The LGF-PA66 (±0.5% version) reaches 100:1 turndown and holds accuracy at 0.3 m/s; logging at 5-minute intervals through an EC32 RTU feeds night-flow analysis on the secondary-supply supervision platform.

Environment: stations are humid and zone meters usually sit in underground valve pits — order IP68, integral or split depending on pit depth. The lightweight PA66 body lets one technician install and service the meter in a tight pit without lifting gear.
Power: off-grid points run on the low-consumption battery variant or solar.
Comms: EC32 with 4G/NB-IoT and Modbus RTU/TCP connects directly to municipal supervision platforms or utility DMA systems.

For more details, please visit our product page or contact our technical team.

Question 2

Which flow meter suits reclaimed water pipelines? Is the LGF-PA66 right for recycled-water duty?

Accepted Answer

Reclaimed water is aggressive: residual chlorine, suspended solids, algae, elevated conductivity and often flocculant carry-over. Metering it demands corrosion resistance, fouling tolerance and stable accuracy at the same time.

Why the LGF-PA66 fits:

Corrosion: the aviation-grade PA66 composite body is chemically stable in weak acids, alkalis and chlorinated water — it suffers none of the chloride pitting that kills 304/316L stainless bodies, the dominant failure mode in reclaimed-water service.
Fouling: no moving parts, no cavities where sludge collects; light electrode coatings are compensated by the excitation scheme, which keeps the zero stable. Specify a PTFE liner with 316L or Hastelloy electrodes matched to the water chemistry.
Accuracy: ±0.5% covers internal reclaimed-water accounting; use the ±0.2% version at custody-transfer points with reuse customers, verified periodically under JJG 1033.

Typical deployment: LGF-PA66 (DN50–DN300) at the reclamation plant outlet and at each industrial offtake for billing; at park branch points the meter feeds an EC32 RTU that uploads instantaneous and totalized flow plus pressure to the reuse-management platform for quota control and leakage screening. In valve pits, order the IP68 submerged configuration with the split converter and RTU in a pit-side cabinet.

For more details, please visit our product page or contact our technical team.

Question 3

Can the LGF-PA66 be installed on rural PE plastic pipelines? How is grounding handled?

Accepted Answer

Yes — PE pipelines are exactly where the LGF-PA66 shows its structural advantage. An electromagnetic meter needs a return path for its measuring signal; a conventional stainless-body meter relies on the conductive pipe wall, so on insulating PE pipe it requires external grounding rings or electrodes. Skip them and the zero drifts — the most common failure in rural water retrofit projects.

The LGF-PA66 body is itself made of insulating PA66 composite and integrates a grounding-electrode arrangement, so the signal loop closes inside the meter. No external grounding ring is needed on plastic pipe: two fewer installation steps and two fewer potential leak points.

Mechanical connection: electrofusion flange adapters or mating flanges per GB/T 9119, ANSI or DIN. Give us the PE pipe OD (dn110, dn160…) when ordering.
Support: PE pipe is flexible — add rigid supports on both sides of the meter and never mount a valve directly behind it; closing a valve can create suction that lifts the liner.
Full-pipe operation: pick a flooded location (low point or rising leg). The IP68-rated LGF-PA66 can sit in a meter pit with the split converter in a box above ground.
Off-grid sites: pair the meter with a solar panel and an EC32 RTU (4G/NB-IoT) for a low-power telemetry package feeding rural water supervision platforms.

For more details, please visit our product page or contact our technical team.

Question 4

LGF-PA66 electromagnetic flow meter vs turbine flow meter: which one should I use for clean water?

Accepted Answer

Both meters handle clean conductive water, but their construction leads to very different field behavior.

Turbine meters use an impeller in the flow path to generate pulses. They are accurate (±0.5%–±1.0%), but the rotor is a wearing part: particles, scale and rust can jam it, low flow may never overcome bearing friction (a dead start-up band), and the constriction creates permanent pressure loss. On raw water carrying algae or floc, turbine bearings typically last only 1–2 years.

The LGF-PA66 electromagnetic flow meter has an unobstructed measurement tube with no moving parts — only the liner and electrodes touch the medium. It is immune to particles and fibers, pressure loss is near zero, turndown reaches 100:1, and accuracy holds at velocities down to 0.3 m/s, which matches the strong day/night flow swings of supply networks. The aviation-grade PA66 composite body is roughly 60% lighter than a stainless body of the same size, cannot corrode, and the IP68 design allows submerged pit installation.

Turbine meter: small-bore (DN4–DN40) batching of oil products or ultra-pure water.
LGF-PA66: DN15 and above for potable water, reclaimed water and industrial water — especially custody-transfer points and DMA district meters.

For more details, please visit our product page or contact our technical team.

Question 5

How should I choose between the 0.2% and 0.5% accuracy versions of the LGF-PA66 electromagnetic flow meter?

Accepted Answer

The LGF-PA66 is produced in both ±0.2% and ±0.5% accuracy versions. The choice depends on what the flow data is used for — not on picking the highest number.

±0.5% version: for process monitoring, internal water balance in wastewater plants, industrial cooling-water assessment and most DMA district meters, where readings guide operations rather than invoices. Paired with an EC32 RTU uploading instantaneous flow and pressure for night-flow leakage analysis, it is fully sufficient — and saves a price tier.
±0.2% version: for custody transfer and billing (water sales between companies, heat-supply metering), quota-based assessment, and any point verified under JJG 1033, the Chinese verification regulation for electromagnetic flow meters. On large lines a 0.3% error translates into a substantial annual billing difference.

Two engineering details matter in practice. Rated accuracy holds within the 0.3–5 m/s velocity window — if the line runs persistently below 0.5 m/s, downsize the meter to raise velocity, otherwise neither version performs. The ±0.2% version is also less tolerant of installation disturbances: keep at least 10D straight pipe upstream and 5D downstream, away from pump-outlet turbulence. The integral PA66 body with built-in grounding electrode closes the signal loop inside the meter, which is what keeps the zero stable at high turndown.

Specify the accuracy grade at order time — the two versions differ in converter calibration and are not interchangeable in the field. For more details, please visit our product page or contact our technical team.

Service & Support

Download Center

Frequently Asked Questions

How should I select the LGF-PA66 for booster pumping stations and high-rise building zone metering?

Which flow meter suits reclaimed water pipelines? Is the LGF-PA66 right for recycled-water duty?

Can the LGF-PA66 be installed on rural PE plastic pipelines? How is grounding handled?

LGF-PA66 electromagnetic flow meter vs turbine flow meter: which one should I use for clean water?

How should I choose between the 0.2% and 0.5% accuracy versions of the LGF-PA66 electromagnetic flow meter?

Need more help?

Service & Support

Download Center

Frequently Asked Questions

How should I select the LGF-PA66 for booster pumping stations and high-rise building zone metering?

Which flow meter suits reclaimed water pipelines? Is the LGF-PA66 right for recycled-water duty?

Can the LGF-PA66 be installed on rural PE plastic pipelines? How is grounding handled?

LGF-PA66 electromagnetic flow meter vs turbine flow meter: which one should I use for clean water?

How should I choose between the 0.2% and 0.5% accuracy versions of the LGF-PA66 electromagnetic flow meter?

Need more help?

获取下载链接

微信扫码关注

获取下载链接

验证成功