Looking for Smart Water Measurement? Meet Lanry WM9100 Ultrasonic Water Meter
No mechanical moving‑parts, wide measuring range, IP68 protection, flexible communication for residential & bulk water‑metering projects.
Traditional mechanical water meters suffer from impeller wear, poor low‑flow capture and limited remote‑reading capability. The WM9100 series ultrasonic water meter uses transit‑time ultrasonic technology without any moving components. It delivers stable custody‑transfer accuracy, long battery life, IP68 submersible rating and multiple wired / wireless interfaces, covering residential, commercial and bulk district metering applications.
1. What Is the DOF6000 Open Channel Flow Meter?
Accurate water measurement is essential for residential water supply, commercial buildings, industrial facilities, and municipal water distribution systems. As water management becomes increasingly digital, traditional mechanical water meters are being complemented by ultrasonic water meters that offer stable measurement performance, low-flow detection, and smart communication capabilities.
The Lanry WM9100 Series Ultrasonic Water Meter is designed to measure water consumption using ultrasonic transit-time technology. With no moving parts in the measurement mechanism, the WM9100 series provides reliable metering performance while supporting modern water management and remote meter reading requirements.
Depending on the model and configuration, the WM9100 series can support wired or wireless communication, bidirectional flow measurement, data storage, and intelligent alarm functions.
The series is suitable for residential buildings, commercial properties, water supply networks, and other applications where accurate water consumption measurement and efficient management are required.
2. How Does the WM9100 Ultrasonic Water Meter Work?
The WM9100 series operates based on the ultrasonic transit-time difference principle.
Ultrasonic signals travel through water in both the upstream and downstream directions. When water is flowing, the transit time of the ultrasonic signal differs depending on whether it travels with or against the direction of flow.
By measuring this time difference, the meter calculates the water velocity and determines the corresponding flow rate. The flow rate is then integrated over time to calculate the cumulative water consumption.
The basic measurement process includes three steps:
① Ultrasonic signal transmission
The transducers transmit and receive ultrasonic signals through the water.
② Flow velocity calculation
The meter analyzes the transit-time difference between upstream and downstream signals.
③ Water consumption calculation
The measured flow rate is accumulated and displayed as total water consumption.
Because the measurement mechanism has no moving parts, the WM9100 avoids mechanical wear associated with conventional moving-element meters. This helps maintain measurement stability over long-term operation.
3. Key Advantages of the WM9100 Series
Non‑invasive flow measurement without pipe cutting.
Portable design for field testing and maintenance.
Bidirectional flow measurement.
Rechargeable battery (14 hours) for on‑site operation.
Data logging options for recording measurement results.
Applications in water supply, cooling water, wastewater, and industrial liquid systems.
4. WM9100 Series: Which Model Is Suitable for Your Application?
The WM9100 family covers several nominal diameter ranges and application requirements. The following is a general selection guide; exact features should be verified against the relevant datasheet.
| Model / series | Nominal diameter | Typical application |
|---|---|---|
| WM9100-ED Residential Ultrasonic Water Meter | DN15–DN25 | Household water metering and residential buildings |
| WM9100-EV Prepaid Ultrasonic Water Meter | DN15–DN25 | Residential or commercial prepaid water management |
| WM9100 Series | DN32–DN40 | Small commercial and building water supply |
| WM9100 Bulk Water Meter | DN50–DN300 | Commercial facilities, larger water pipelines and distribution networks |
| WM9100 Bulk Water Meter | DN350–DN600 | Large-diameter water supply and bulk flow measurement |
Note: The listed diameters indicate available series ranges, not that every communication interface, valve option, or specification is available across all models.
WM9100-ED: Digital Residential Ultrasonic Water Meter
The WM9100-ED is designed for residential water measurement. Depending on the selected configuration, it can support remote reading and integration with smart water management systems.
WM9100-EV: Prepaid Ultrasonic Water Meter
The WM9100-EV is designed for applications requiring prepaid water management. An integrated valve option enables water supply control in compatible systems, helping property managers or utilities implement prepaid consumption management.
WM9100 Bulk Water Meter
For larger pipelines, the WM9100 series includes bulk water meter options covering larger nominal diameters. These meters can be used in commercial, municipal, and water distribution applications where larger flow capacity and consumption monitoring are required.
For model details, contact us for further information.
5. Typical Applications of the WM9100 Series
Residential Water Metering
Suitable for household water consumption measurement, apartment buildings, residential communities, and smart residential water management projects.
Commercial Buildings and Property Management
Offices, hotels, shopping centers, and commercial properties can use water meters to monitor consumption by building, tenant, or designated water supply line.
Municipal Water Supply Networks
Support water consumption measurement in distribution systems, helping utilities collect data and improve water resource management.
Industrial and Facility Water Monitoring
Selected models can be used for process water, cooling water, and facility water consumption monitoring, subject to the meter's rated operating conditions.
FAQ
Q1: What is the main difference between an ultrasonic water meter and a mechanical water meter?
An ultrasonic water meter calculates flow using ultrasonic signals, while a conventional mechanical water meter uses moving measuring elements. The WM9100's non-moving measurement mechanism reduces mechanical wear and supports long-term measurement stability.
Q2: Can the WM9100 measure very low water flow rates?
The WM9100 is designed to measure low flows within its specified metrological range. The minimum measurable flow depends on the nominal diameter and selected metrological parameters, so the datasheet should be checked for the intended application.
Q3: Does the WM9100 support remote meter reading?
Yes, selected models support wired or wireless communication for remote meter reading. Available options depend on the specific model and configuration.
Q4: Can the WM9100 measure reverse flow?
The WM9100 series supports bidirectional flow measurement in applicable configurations. Check the relevant product documentation for the measurement and display behavior of the selected version.
Q5: Is the WM9100 suitable for outdoor or flooded installations?
Certain WM9100 configurations offer IP68 protection. Suitability depends on the exact model, installation conditions, and specified immersion requirements. Confirm the product rating before installation.
Q6: What nominal diameters are available?
The WM9100 family includes residential models from DN15 to DN25, DN32–DN40 versions, bulk water meter options from DN50 to DN300, and larger versions from DN350 to DN600. Availability and technical specifications should be confirmed for the required size.
Q7: How long can the WM9100 battery operate?
Battery life depends on the model, communication frequency, operating conditions, and configuration. Published specifications differ between versions, so please refer to the datasheet for the exact model rather than assuming a single battery life for the entire series.
Q8: Can the WM9100-EV be used for prepaid water billing?
The WM9100-EV is designed for prepaid water management and can be equipped with an integrated valve. System integration, billing logic, and valve-control functions should be confirmed against the selected configuration.
Tell us your water application — we'll size the meter
Share your pipe size, flow range, water quality and communication needs. The Lanry team will recommend the right ultrasonic water meter configuration.
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Post time: Oct-23-2026