Key Highlights of the EW6800 Electromagetic Water Meter
01. Material
02. Battery
03. Multiple Output Options Available
04. Pipe Size
05. Turndown ratio
06. Protection Class
1.EW6800 Series Electromagnetic Water Meter — Product Portfolio Summary
The EW6800 Series is a battery‑powered inline electromagnetic water meter engineered by Lanry Instruments for water supply networks, DMA zone monitoring, commercial billing and industrial water metering. With full‑bore sensor design, IP68 protection grade, multi‑communication options and custody‑transfer‑grade accuracy, it delivers stable volume measurement for conductive water. Below is detailed introduction of this series.
2. What is the working principle of the Electromagnetic Water Meter?
Faraday’s Law of Electromagnetic Induction
When conductive water flows through the magnetic field inside the measuring tube, it cuts magnetic‑force lines and generates induced electromotive force.
The induced voltage is proportional to water flow velocity. The transmitter processes this signal, combines with pipe diameter parameters, and calculates instantaneous flow and total accumulated volume.
Measurement result is independent of water pressure, temperature or viscosity changes.
3. What Are the Key Features of the Electromagnetic Water Meter?
| High-performance | Full‑bore unobstructed flow channel, negligible pressure loss, saving pump system energy consumption. |
|---|---|
| Well structured | No moving mechanical parts inside, avoiding wear, blockage or jam‑down failure. |
| Protection Class | IP68 full waterproof rating, suitable for underground meter wells and long‑term submerged installation. |
| Output options | RS485 Modbus, NB-loT, LoRaWAN, GPRS outputs for your optional. |
| Pipe Size | DN40-200mm. |
| High Accuracy | High measuring accuracy up to ±0.5% reading; wide turndown ratio, capable of capturing tiny leakage flow at low velocity. |
| Bidrectional flow | Bidirectional flow measurement, supports forward‑reverse flow statistics for pipe‑network water‑hammer scenarios. |
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Protection Class
|
IP68 design, longtime under water working. |
| Low-power | Low‑power design, powered by internal industrial lithium battery, no external AC power required. |
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Medium
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Flow measurement for conductive water.
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4. Installation & Operation
- Pipe condition: Ensure the pipeline is completely full of water, avoid air bubbles inside the measuring tube.
- Straight pipe requirement: Keep ≥5D straight pipe upstream and ≥3D straight pipe downstream of the meter; stay away from pumps, elbows and valves which will disturb flow field.
- Mounting position: Can be installed horizontally or vertically (vertical installation requires water flowing upward). Match flow arrow mark on sensor with actual water direction.
- Pre‑installation: Clean pipelines to remove welding slag, sand and debris before mounting.
- Wiring & communication: If wireless transmission is enabled, place antenna away from metal shielding and high‑power electromagnetic equipment.
- Commissioning: After flange connection and pressure‑leakage test, power on the unit, set pipe parameters and communication address, verify real‑time flow reading before formal operation.
5. Maintenance & Battery Service Life
- Battery life: Under default data‑upload frequency, the built‑in lithium battery supports 5‑8 years of continuous operation. Service life will be shortened if setting frequent data transmission or working under extreme low temperature. Low‑battery alarm will be sent via remote platform in advance.
- Battery replacement: Replace with matched special lithium‑thionyl chloride battery; do NOT use ordinary alkaline battery. Keep battery compartment well‑sealed after replacement to maintain IP68 waterproof performance.
- Routine inspection: Check flange sealing for leakage periodically.
- Electrode cleaning: Sediment or scale on electrodes will cause signal drift. Clean electrodes gently with soft brush; never use steel brush or strong corrosive solvent. Recommended cleaning cycle: every 1‑2 years for poor‑quality water conditions.
- Avoid on‑site electric welding near installed meter, welding current may damage internal electronic modules.
- Calibrate according to local metering regulation requirements.
6.The differences of EW6800 Electromagnetic Water Meter& Ultrasonic Water Meter
7. The Application of Electromagnetic Flowmeter.
- Municipal water‑supply DMA partition metering & leakage management
- Commercial & industrial user trade billing measurement
- Residential district main total water meter
- Well water, reclaimed water, conductive wastewater monitoring
- Agricultural irrigation conductive water consumption statistics
- Remote water‑resource monitoring project with battery‑power requirement
FAQ About the Electromagnetic Water Meter
Q1. Can EW6800 work for non‑conductive purified water?
No. It relies on electromagnetic‑induction principle, minimum liquid conductivity is required.
Q2. Can EW6800 be used for sub‑merged underground meter well?
Yes, IP68 waterproof grade supports long‑term submersion, yet keep meter‑well drainage to avoid heavy silt accumulation.
Q3. What happens if air bubbles enter measuring tube?
Air bubbles will cause unstable reading. Ensure pipeline stays full‑of‑water during installation and operation.
Q4. Does EW6800 need external 24V DC power supply?
Standard version uses internal lithium battery. External power supply version is available upon special request.
Q5. How to handle scaling on electrodes?
Gently clean electrodes with soft brush and clean water; do not scratch electrode surface.
Graduating with a Bachelor’s in Business English, as a sales engineer of Lanry Instruments more than 5 years.
Having participated in multiple overseas exhibitions,possess in-depth product knowledge of our complete instrument lineup
and strong capabilities for international client engagement.Should you have any project demands for instruments, pls feel free to contact me.
Post time: Sep-15-2026