Flanged Ultrasonic and Mechanical Water Meters for Utility Procurement
Water utilities and industrial buyers rarely choose a meter on one specification alone. They balance accuracy at low flow, pressure loss, battery life, communication options, installation conditions, and the cost of keeping thousands of units in service. GUANGZHOU BASIC INTELLIGENCE TECHNOLOGY CO.,LTD. addresses that mix with a portfolio that spans large-diameter ultrasonic meters, multi-jet wet meters, and horizontal and vertical Woltmann meters. The product photography reflects the range: flanged bodies with clear LCD windows and flow-direction arrows, compact threaded brass connections on smaller models, sealed electronics, and wiring points for external power or communication.
A Water Meter Portfolio Built Around Real Network Conditions
Basic Controls supplies meters for municipal distribution, commercial buildings, industrial process water, and residential sub-metering. Each family is aimed at a different duty point. Large-diameter ultrasonic meters serve main lines and district metering where turndown, diagnostics, and remote reading matter. Multi-jet wet meters cover smaller service lines where cost, simplicity, and reliable low-flow performance are priorities. Woltmann meters handle high-flow industrial and municipal lines where pressure loss and long service life shape the specification.
That range matters for distributors and tender teams. A single supplier can cover bulk metering, building-level measurement, and residential service, while keeping installation guidance, spare parts planning, and technical communication consistent across the project.
Large Diameter Ultrasonic Water Meters: Redundancy Where It Matters
The large-diameter ultrasonic water meter measures flow from the time difference between downstream and upstream ultrasonic signals in water. Its dual-channel design supports high accuracy and stable measurement. The redundancy is practical: if one channel is blocked by foreign matter or develops an abnormality, the meter can continue to measure through the other channel. That feature suits buried chambers, plant rooms, and network points where a site visit is expensive.
Self-diagnosis covers flow sensor faults, temperature sensor open and short circuits, over-range conditions, and battery undervoltage. The meter uses the company patented flow measurement method, with an authorized invention patent, plus intelligent data error correction for stability in the field. A nine-digit wide-temperature LCD presents cumulative volume, instantaneous flow, pressure, temperature, and status information in a clear format.
Key specifications include accuracy class 2, protection class IP68, pressure level MAP16, temperature class T30, and upstream and downstream flow field sensitivity of U5/D3. Range ratio options include 125, 160, 200, 250, and 400. Common Q3 capacities run from 25 cubic meters per hour at DN50 to 1,000 cubic meters per hour at DN300, with other specifications available on request. The flow tube section is cast steel, the transducers use piezoelectric ceramics, and the built-in ER26500 battery is 3.6 V. Battery life is stated as more than 6 plus 1 years.
Communication options make the meter ready for different reading models. Buyers can specify a photoelectric interface for handheld infrared reading, wired M-BUS or RS485, wireless LoRa, or a built-in 4G or NB-IoT module. External power is available for RS485 configurations at DC 7.5 to 24 V. Reverse flow can be counted, and pipeline pressure monitoring is optional with a 0 to 1.6 MPa range and 0.01 MPa resolution.
Multi-Jet Wet Water Meters for Residential and Light Commercial Service
The multi-jet wet meter uses multiple water jets to strike the turbine blades, bringing the rotor up to a speed proportional to flow. The multi-jet layout distributes flow evenly and reduces turbulence, which supports accuracy at low flow rates. Because the measuring mechanism is in direct contact with water, the design is simple, durable, and cost-effective for clean water service.
The LXS series covers DN15 to DN65 with a Q3/Q1 range ratio of 100. Flow parameters are Q4/Q3 of 1.25 and Q2/Q1 of 1.6. Maximum permissible error is plus or minus 5 percent in the lower flow range and plus or minus 2 percent in the upper flow range. Accuracy is class 2. The meter is available for cold water T30 or T50 and hot water T90, with a working pressure of 1.0 MPa, flow field sensitivity of U10/D5, and pressure loss class delta p 63. Threaded connections run from G3/4B to G3 1/4, and flanged DN50 and DN65 versions use four M16 bolts. Installation is horizontal.
Woltmann Meters for High-Flow Industrial and Municipal Lines
The detachable horizontal Woltmann dry-type meter is built for large-diameter pipelines in industrial, commercial, and municipal water distribution. Its measuring mechanism is isolated from the water and uses magnetic coupling to transmit rotor motion to the counter. That arrangement reduces fouling and maintenance while keeping the meter suitable for clean water. The detachable structure allows maintenance or inspection without removing the entire pipeline.
The LXLG series covers DN50 to DN300 with a Q3/Q1 range ratio of 50. Accuracy is class 2, working pressure is 1.0 MPa, temperature class is T30, flow field sensitivity is U10/D5, and pressure loss class is delta p 63. Flow parameters are Q4/Q3 of 1.25 and Q2/Q1 of 1.6. Flanges follow GB/T 17241.6 with PN10 nominal pressure and bolt patterns from four M16 on DN50 and DN65 up to twelve M20 on DN250 and DN300.
The vertical Woltmann dry-type detachable meter combines a vertical helix rotor with a low-inlet and high-outlet flow path. It is designed for environments with significant flow variation and includes a built-in stainless steel filter for domestic water conditions. The indicating mechanism uses magnetic coupling for anti-magnetic interference, and the counting mechanism is independently sealed so dial readings are not affected by water quality. The metering mechanism can be removed for maintenance without dismantling the whole unit.
The WS series covers DN50 to DN200 with a Q3/Q1 range ratio of 200. Accuracy is class 2. Temperature options include T30, T50, and T90. Working pressure is 1.0 MPa or 1.6 MPa, flow field sensitivity is U10/D5, and pressure loss class is delta p 63. Flow parameters are Q4/Q3 of 1.25 and Q2/Q1 of 1.6. Flange connections comply with GB/T 17241.6 in PN10 or PN16, with special flange requirements available at ordering.
Installation Quality Decides Meter Performance
Field accuracy depends as much on installation as on the meter. Pipes must be flushed before installation to prevent stones, sand, and debris from entering the meter. The meter should be protected from impact, vibration, direct sunlight, freezing, and external corrosion. Avoid high points where air can collect, elbows where vortices form, and pump discharges that create pulsating flow.
Upstream and downstream pipes should match the meter diameter and should not be reduced. The flow arrow on the body must point in the direction of water flow. A filter and an isolation valve of the correct caliber are recommended ahead of the meter. For multi-jet and Woltmann installations, keep straight runs of at least ten times the meter diameter upstream and five times downstream, and position the outlet at least 0.5 meters above the meter where practical. Fill new lines slowly and vent air. During service, keep inlet and outlet valves fully open. These details prevent the inaccurate measurement, reverse rotation, and no-count conditions listed in the troubleshooting guides.
Smart Communications and Lifecycle Support
Remote reading is no longer a premium add-on. Utilities want consumption data, fault records, and pressure information available without sending a reader to every premises. The ultrasonic platform supports M-BUS, RS485, LoRa, 4G, and NB-IoT options, plus infrared handheld reading and historical frozen traffic records. That flexibility lets a utility start with manual reading and add network communication later, or specify a fully connected meter from the outset.
Warranty terms support long-term ownership. Ultrasonic meters carry a one-year free warranty from delivery, with paid extension available up to nine years, and lifetime warranty support. Damage from broken seals, impact, chemical contamination, dirty pipelines, or incorrect model selection is excluded, so correct specification and installation remain essential.
Company Capabilities That Support Export Buyers
Guangzhou Basic Intelligence Technology Co., Ltd. has operated since 1998 and brings more than 26 years of experience in smart utilities. It is a high-tech enterprise with more than 80 patents and software copyrights and has participated in drafting national and international metrological standards. Recognition includes the Guangdong Provincial Engineering Technology Research Center for Cooling and Heat Measurement Energy Conservation in 2015, EU MID certification, and the Guangdong Provincial Famous Brand Product title in 2018.
The company core strength is next-generation 4G smart metering. Its portfolio includes 4G water meter camera modules, 4G gas meter camera modules, high-precision heat meters, reliable flow meters, and fully integrated management systems for smart water, smart gas, building energy management, and smart heating. Buyers can source a single component or a turnkey system, with products engineered for real-time data, remote control, and efficient utility operations.
Choosing the Right Model for Your Tender
Start with the expected flow range and compare it with the meter Q1 to Q3 band. Confirm pipe diameter, connection type, flange standard, pressure rating, temperature class, and available straight runs. Decide whether the site needs battery power, external power, wired communication, wireless communication, or a built-in IoT module. For large mains, review the ultrasonic meter redundancy and diagnostics. For smaller service lines, compare the multi-jet range ratio and connection options. For high-flow industrial lines, select the Woltmann body and flange pattern that match the pipeline.
For export inquiries, model recommendations, and distributor support, contact SARA HUANG at GUANGZHOU BASIC INTELLIGENCE TECHNOLOGY CO.,LTD. Email: SARA.HUANG@BASIC.COM.CN. Phone and WhatsApp: 18011862120. Fax: 020-80672831. Headquarter: Room 611, NO.101 Kexue Avenue, Huangpu District, Guangzhou, P.R.C. Website: www.basic-meter.com.
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