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Endress Ultrasonic Flow Meter: Proline Clamp-On Technologies
Quick Answer: Endress Proline clamp-on ultrasonic flow meters mount outside the pipe and measure flow without cutting or welding. They work on metal and plastic pipes from DN15 to DN4000. Silver Instruments supplies these Proline sensors together with full factory configuration, on-site support across Southeast Asia and Australia, and quick price turnaround when you send your pipe and fluid data.
How Proline Clamp-On Technology Works
Two transducer pads sit on the outside of the pipe wall. One sends an ultrasonic pulse through the fluid, the other receives it. The Proline transmitter calculates flow velocity from the transit time difference. No wetted parts touch the liquid. Because of this, the meter never wears from abrasive slurries, does not cause pressure drop, and avoids the cost of pipe modifications.
Most engineers skip one detail. The clamp-on pads need consistent acoustic coupling. Endress uses a solid coupling pad material and a mounting rail that holds the transducers at a fixed distance. This removes signal drift on vibrating lines. We have seen this on customer sites many times in water treatment plants in the Philippines and chemical batching in Indonesia.
Common Proline Clamp-On Models
In practice, the most specified sensors come from the Prosonic Flow W family. The Proline Prosonic Flow W 400 is a compact, two-wire loop-powered version ideal for remote sites with no AC power. The Proline Prosonic Flow 91W handles wide temperature ranges and pipes up to DN4000. The Proline Prosonic Flow 93W adds custody transfer accuracy to ±0.5 percent of reading for water and hydrocarbon applications. All models output 4-20 mA HART, pulse, and digital Modbus. Transmitters ship with a local display showing flow rate in kg/h, m³/h, or liters per second.
Silver Instruments stocks the Proline 100, 200, and 400 series transmitters and the matching clamp-on sensor pairs. We commonly bundle the Prosonic Flow W 400 with single-channel measurement for desalination plant seawater intake lines in the Middle East. For a biogas project in Thailand, we coupled the Prosonic Flow 91W with a remote transmitter mounted 30 meters away on a dry wall.
Installation Without Process Shutdown
The clamp-on meters install on live pipes. The field crew cleans the pipe surface, applies coupling gel, clamps the sensors, and connects the cable to the transmitter. Commissioning takes under two hours for a trained technician. This suits production lines in food and beverage plants where hot CIP cycles run daily. We have supplied Proline clamp-on systems to a dairy in Victoria, Australia, where any pipe cut would break sterile conditions.
Straight pipe requirements are real. You need 15 diameters upstream and 5 diameters downstream for a fully developed flow profile. The Proline transmitter has a built-in Reynolds compensation to correct for profile distortion. It helps when space is tight, but do not ignore the straight run. Our application engineers ask for a photo of the pipe layout before quoting.
Industries Where Clamp-On Meters Perform Best
Water and wastewater networks use these for raw water intake, treated effluent discharge, and chemical dosing of chlorine or PAC. Oil and gas operators measure produced water, cooling water, and fire water lines without interrupting operations. Marine service yards in Singapore use Proline clamp-on flow meters for ballast water treatment systems needing DNV GL and BV class approvals. In the chemical sect
Another unexpected use is short-term flow surveys. Plant managers in Mexico rent Proline clamp-on meters from us for two-week pump efficiency audits. They ship the meter back, we inspect it, and return a calibration certificate. No permanent installation needed.
Technical Specs That Matter for Your Order
Pipe diameter range: DN15 to DN4000 with the correct sensor set. Fluid temperature: minus 30 degrees Celsius to plus 200 degrees Celsius depending on the transducer type. Pipe material: carbon steel, stainless steel 316, PVC, PE, GRP. Lined pipes with bitumen, cement, or PTFE also work but need a site attenuation test. Accuracy: ±0.5 percent of reading for Prosonic 93W, ±1 percent for Proline W 400. Repeatability: 0.15 percent. Outputs include active 4-20 mA, passive 4-20 mA, pulse per volume, frequency, and Modbus RTU. Power supply options: 24 V DC loop power or 100 to 230 V AC. Enclosure: IP67, available with ATEX Zone 2/Div 2 approval.
Send us your pressure, temperature, pipe size (DN), and flow range. Silver Instruments configures the Proline transmitter at the factory before dispatch. All meters ship with a free 3-point calibration certificate traceable to ISO 17025.
Why Source Through Silver Instruments
We hold Endress Proline products in our Sydney and Nanjing distribution centers. Most clamp-on meter deliveries take four to eight weeks. Common accessories like coupling pads and mounting straps stay in stock. For urgent projects in the Pacific Islands, we have shipped a Prosonic Flow W 400 within two working days by air freight. Our engineers answer technical questions by WhatsApp video call directly from the warehouse at +86 15365082610.
You do not pay hidden fees. One price covers the meter, initial configuration, calibration, and export boxing. We handle the HS code and origin documents for Latin America, Africa, and Middle East customs. Contact us now: Email: [email protected] or Tel: +86-25-68650347. For immediate chat, use WhatsApp: +86-25-52155837. Mention pipe size and fluid, and we send a quote by the next business day.
FAQ
What pipe materials are compatible with Proline clamp-on sensors?
Carbon steel, SS304, SS316, PVC, HDPE, GRP, and concrete with a smooth surface. Rough pipe surface reduces signal strength, so ask for a site evaluation.
Can the meter measure on a lined or coated pipe?
Yes, but certain liners like thick rubber or loose bitumen cause signal loss. The Proline transmitter has a diagnostic function to assess acoustic coupling before final acceptance.
What certifications do the meters carry?
Proline clamp-on meters ship with cCSAus, IEC Ex, ATEX Zone 2, and marine type approvals from DNV and BV if requested at order stage.
How do I get a fast price estimate?
Email [email protected] with four values: pipe size DN, fluid type, temperature in degrees Celsius, and flow range in m³/h. We reply with a fixed price within 24 hours.
Does Silver Instruments provide local support in Australia and Southeast Asia?
Yes. We have service partners in Melbourne, Jakarta, Manila, and Dubai for commissioning and annual health checks. All support tickets go to the same engineering team that configures your meter.