Industrial Automation

EC60 Compact Terminal Solution for Distributed IoT Retrofit of Small Water Treatment Plants

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

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.

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

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.

Q: Should an electromagnetic flow meter be installed on the pump suction or discharge side? LGF-PA66 siting in pump stations

Install it on the discharge side whenever possible. On the suction side the meter sits under vacuum, where cavitation and degassing cause erratic readings, the flow profile is disturbed by elbows and reducers, and sustained vacuum stresses the flange-to-body seal. The LGF-PA66 has an all-insulated composite body with no liner to debond, but the positive-pressure siting rule still applies. Siting checklist for pump stations: Straight run ≥5D upstream and ≥2D downstream; extend the upstream run if a reducer sits close; Avoid the highest point of the line (air pockets) and the lowest point (sediment); prefer a mid horizontal run or a vertical section with upward flow; Flooded valve pits require the IP68-rated version; the PA66 body weighs about half of a comparable stainless-steel meter, which matters when lowering it into a confined pit; With frequent pump cycling the PA66 body withstands water-hammer shocks well, and an EC32 RTU can alarm on flow transients to watch pump health. If suction-side mounting is unavoidable, confirm the pump runs flooded-suction and keep the meter as close to the pump inlet flange as possible to shorten the vacuum section. Check pipe supports before installation — vibration from the pump outlet travels into the meter body and affects long-term sealing. For more information, please visit our product pages or contact our technical team.

Q: What is the pressure loss of the LGF-PA66 electromagnetic flow meter and does it add pumping energy cost?

The LGF-PA66 has a full-bore straight-through measuring tube with no throttling elements and no moving parts. Pressure loss comes only from minor local resistance: a few kPa up to roughly a dozen kPa at rated flow across DN15–DN1200. Orifice plates typically cost 10–40 kPa and turbine meters are comparable or worse, so the electromagnetic design is the energy-saving choice. Two points for pumping-cost evaluations: The PA66 body is moulded in one piece with low surface roughness; at the same size and flow it loses slightly less head than a stainless-steel body with a separate liner; In pump-station retrofits this pressure-loss level barely shifts the system resistance curve, so the pump operating point and long-term electricity consumption stay effectively unchanged. Where energy KPIs matter, pair the LGF-PA66 with an EC60 RTU: it collects the meter's 4–20 mA or pulse output together with pump power data and computes specific energy (kWh per m³) for the platform, exposing high-consumption periods. On DN300+ lines, every kPa of head saved translates into thousands of kWh per year — the reason many municipal stations replace orifice metering with the LGF-PA66 during upgrades. For more information, please visit our product pages or contact our technical team.

Addressing the pain points of small township water treatment plants - intake, dosing, filtration, clear-water basin and delivery pump house scattered across separate buildings with no on-site staff, lagging manual readings, undetected night-time anomalies and no wired communication infrastructure - this solution is built around the EC60 compact measurement and control terminal: Modbus RS485 acquisition of electromagnetic flow meters, level meters and residual chlorine analyzers, wireless upload over GPRS/GSM SMS to the monitoring platform, compliance with the SZY206-2016 water resources monitoring data transmission protocol, rated power below 1 W with 9-16 VDC wide-range supply, and remote real-time viewing and control from mobile phones and PCs - a low-cost distributed network that upgrades small plants from manual rounds to online IoT monitoring.

Overview

Summary

Key Advantages

Integrated acquisition and wireless communication: multi-channel Modbus RS485 acquisition combined with GPRS/GSM SMS uplink - flow, level, pressure and water quality data are gathered locally and uploaded wirelessly without communication infrastructure

SZY206-2016 protocol compliance: type-tested against the water resources monitoring data transmission protocol, directly compatible with water resources monitoring platforms - no protocol conversion needed for county or city platform integration

Ultra-low power with wide-range supply: rated power below 1 W and 9-16 VDC input connect to plant DC panels, battery banks or solar power systems, suiting remote points without stable mains power

Industrial reliability and explosion protection: -5 to 75 degC operating range, T6 explosion-proof rating and MTBF of at least 50,000 h for years of unattended operation in humid, corrosive plant environments

Dual-end remote management from phone and PC: operators view real-time data, history curves and alarm logs anywhere, query and set terminal parameters remotely, and receive instant SMS alarm pushes

Control output interlocking: relay outputs drive dosing pumps, water pumps and valves; combined with platform threshold strategies this closes the control loop over level, pumping and dosing

Challenges

Scattered unmanned process points: intake well, dosing room, filters, clear-water basin and delivery pump house sit in separate buildings; per-shift manual rounds and hand readings lag by hours and nights and holidays are a total blind spot
Anomalies found only after damage: dosing-pump dry running, basin overflow and delivery-main pressure loss have no real-time alarms, so equipment damage, water loss or supply interruption is discovered after the fact
No wired communication infrastructure: small plants in townships have no fiber laid, and wired SCADA retrofits need trenching and cabling - high cost, long construction cycles and difficult coordination
Mixed instrument brands and protocols: flow meters, level meters and quality analyzers from different vendors use different outputs and protocols, so data cannot be acquired uniformly and forms information silos
Thin O&M staffing and skills: township plants run with one or two operators or none at all, lacking automation specialists, so the retrofit must be maintenance-free, easy to adopt and remotely diagnosable

Results

All five process stages are monitored online around the clock with second-level updates replacing per-shift manual readings; night and holiday blind spots are eliminated and plant status is visible anytime on phone or PC
High/low level, pressure-loss and chlorine/turbidity limit violations trigger instant SMS and app alarms, turning after-the-fact discovery into minute-level response - dosing-pump dry running and basin overflow are essentially eliminated
GPRS/GSM wireless networking requires no trenching or cabling: each point is retrofitted in 1-2 days instead of weeks and the overall cost drops sharply versus wired SCADA, fitting the limited budgets of township plants
Modbus RS485 unifies acquisition across instrument brands and uploads per SZY206-2016, breaking information silos so data feeds county-level and higher water resources monitoring platforms directly
EC60 rated power below 1 W, MTBF of at least 50,000 h and T6 explosion-proof rating deliver maintenance-free long-term operation; remote configuration and diagnostics cut site visits, letting one or two staff run the whole plant monitoring network

Solution Details

EC60 Compact Terminal Solution: Distributed IoT Retrofit for Small Water Treatment Plants

Small township water treatment plants and rural centralized water supply schemes still largely run on manual operation: intake, dosing, filtration, clear-water storage and the delivery pump house are spread across different buildings, and operators walk inspection rounds each shift to hand-record flow, level and water quality data. Readings lag by hours and the night and holiday periods are a complete blind spot. Dosing-pump dry running, clear-water basin overflow and delivery-main pressure loss are only discovered after the fact. Most small plants have no communication fiber laid, and wired SCADA retrofits are expensive and slow to build, so IoT upgrades have long remained on paper.

This solution builds a distributed wireless monitoring network on the EC60 compact measurement and control terminal: one EC60 is installed at each process stage, acquiring data from electromagnetic flow meters, ultrasonic level meters, pressure transmitters and chlorine/turbidity analyzers over Modbus RS485 buses, and uploading wirelessly to the cloud monitoring platform via GPRS or GSM SMS - with no trenching or communication cabling required. The EC60 complies with the SZY206-2016 water resources monitoring data transmission protocol and has passed its type test, so data formats are directly compatible with water resources monitoring platforms at county level and above. Rated power is below 1 W with a 9-16 VDC wide-range supply that connects to the plant DC panel or a solar power system; with T6 explosion-proof rating and MTBF of at least 50,000 hours it runs unattended for years in the humid plant environment. Operators view real-time data and history curves of every process point from a phone or PC; the platform evaluates high/low level, pressure-loss and chlorine-limit alarms and pushes SMS and app notifications instantly, while relay outputs interlock dosing pumps and water pumps directly - upgrading small plants from manual rounds to distributed IoT online monitoring at low cost.

Key Advantages of the EC60 Distributed IoT Monitoring Solution

Integrated acquisition and wireless communication: multi-channel Modbus RS485 acquisition combined with GPRS/GSM SMS uplink - flow, level, pressure and water quality data are gathered locally and uploaded wirelessly without communication infrastructure
SZY206-2016 protocol compliance: type-tested against the water resources monitoring data transmission protocol, directly compatible with water resources monitoring platforms - no protocol conversion needed for county or city platform integration
Ultra-low power with wide-range supply: rated power below 1 W and 9-16 VDC input connect to plant DC panels, battery banks or solar power systems, suiting remote points without stable mains power
Industrial reliability and explosion protection: -5 to 75 degC operating range, T6 explosion-proof rating and MTBF of at least 50,000 h for years of unattended operation in humid, corrosive plant environments
Dual-end remote management from phone and PC: operators view real-time data, history curves and alarm logs anywhere, query and set terminal parameters remotely, and receive instant SMS alarm pushes
Control output interlocking: relay outputs drive dosing pumps, water pumps and valves; combined with platform threshold strategies this closes the control loop over level, pumping and dosing

EC60 Technical Specifications at a Glance

SZY206-2016

Water Resources Protocol Compliant

< 1 W

Rated Power Consumption

9-16 VDC

Wide-Range Power Supply

-5 to 75 °C

Operating Temperature Range

Explosion-Proof Rating

≥ 50,000 h

MTBF (Mean Time Between Failures)

How the EC60 Enables Distributed IoT Retrofit Across Process Stages

The EC60 compact terminal is deployed at each process stage of a small water treatment plant, forming a distributed wireless monitoring network without trenching or communication cabling. Each unit acquires data from electromagnetic flow meters, ultrasonic level meters, pressure transmitters and chlorine/turbidity analyzers over Modbus RS485 buses, then uploads the data wirelessly to the cloud monitoring platform via GPRS or GSM SMS. This architecture allows small plants to upgrade from manual inspection rounds to distributed IoT online monitoring at low cost, with real-time visibility into every process point from intake through delivery.

Application Scenarios for the EC60 Water Treatment IoT Solution

Small township water treatment plants requiring low-cost IoT upgrades without fiber or wired SCADA infrastructure
Rural centralized water supply schemes with remote process points lacking stable mains power, suited to solar or battery-backed operation
Plants needing direct compatibility with county-level and above water resources monitoring platforms via SZY206-2016 protocol
Facilities requiring unattended operation with instant SMS and app alarm notifications for level, pressure-loss and chlorine-limit events
Sites where relay output interlocking of dosing pumps, water pumps and valves closes the control loop over level, pumping and dosing

? 参考来源

Product description and technical specifications provided by the manufacturer
SZY206-2016 water resources monitoring data transmission protocol

Approach

How we implement intelligence into your infrastructure step by step.

Plant process and point survey

Review instrument status at intake, dosing, filtration, clear-water basin and delivery pump house (brands, output types, protocols), power availability and GPRS signal strength; determine EC60 mounting points, acquisition channel allocation and interlock requirements, and produce a retrofit point list.

Instrument access and bus networking

Add Modbus conversion modules to legacy instruments without communication outputs or replace them with smart instruments; connect each process point's instruments to the local EC60 RS485 bus, planning slave addresses and register maps to unify data acquisition.

EC60 installation and communication commissioning

Mount EC60 units in instrument boxes or control cabinets, connect 9-16 VDC power and antennas, configure GPRS APN or SMS channel and platform connection parameters, set reporting intervals and catch-up transmission per SZY206-2016, and verify uploaded data against on-site instrument readings point by point.

Platform configuration and interlock commissioning

Build the plant mimic on the cloud monitoring platform, configure high/low level, pressure-loss and chlorine/turbidity alarm thresholds with SMS/app recipient lists, define dosing-pump and water-pump interlock strategies, and after a two-week trial confirming alarm accuracy and reliable interlocks, formally commission.

O&M management and continuous optimization

Keep logs of terminal online rate and data completeness, use remote diagnostics to resolve communication faults, and inspect power supplies, antennas and terminals quarterly; optimize reporting intervals, alarm thresholds and pump interlock strategies on historical data, and gradually extend to secondary supply pump houses and network-end monitoring points.