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Dynasonics Ultrasonic Flow Meter: Sourcing Portable Clamp-on Pipe Sizers
Quick Answer
Portable clamp-on pipe sizers measure the exact outside diameter and wall thickness of a pipe. This data feeds directly into a Dynasonics ultrasonic flow meter so the transducer spacing and signal settings are right from the first shot. Silver Instruments supplies origin-tested pipe sizers to match Dynasonics TFX-5000, DXN, and UFX series metres. Send us your pipe material, outer diameter range, and wall thickness tolerance and we will return a quote within one business day.
Why Pipe Sizing Happens Before Every Clamp-on Job
Clamp-on ultrasonic flow meters rely on the transit-time principle. The transducers send acoustic signals through the pipe wall into the liquid. If you enter a wrong pipe outside diameter or wall thickness, the path length calculation shifts. The meter over-reads or under-reads. In field tests a 2 mm error on a DN50 carbon steel pipe can cause a 3 percent to 5 percent flow deviation. Most engineers skip this part and rely on pipe schedules. The schedule says DN80 SCH40 has an OD of 88.9 mm. In practice, we have seen corroded, painted, or insulated pipes that shift the real OD by 1 mm to 3 mm. A portable pipe sizer removes that guesswork.
How Dynasonics Pipe Sizers Work on Site
The tool wraps around the pipe with a flexible strap or a rigid jaw. A digital display shows the outer diameter to 0.01 mm resolution on pipes from DN6 to DN6500. Many versions also measure wall thickness via ultrasonic probe, eliminating the need for a separate thickness gauge. This dual-mode tool lets a field engineer capture both OD and wall thickness in under 30 seconds. Typical accuracy is ±0.1 mm for OD and ±0.05 mm for wall thickness. We stock models with data logging and Bluetooth transfer so the readings appear directly in the Dynasonics DXN mobile app for transducer setup.
Key Specifications Engineers Ask About
Pipe range: clamp set handles DN6 (1/8 inch) to DN2000 (80 inch). For bigger pipes we supply chain-type extensions that reach DN6500.
Material compatibility: works on carbon steel, stainless steel, copper, PVC, HDPE, GRE, and lined pipes. The wall thickness probe needs a sound velocity calibration per material; the device stores up to 12 custom material tables.
Operating temperature: sensing head rated -20 °C to +55 °C. The wall thickness probe can touch pipe surfaces up to 80 °C.
Ingress protection: IP65 on the display unit, IP67 on the ultrasonic thickness probe.
Output: RS-232 and Bluetooth 5.0. Data export as CSV via USB to laptop.
Battery: rechargeable Li-ion pack runs 14 hours on a full charge. Charge time 3 hours with 5V USB-C.
Weight: 0.7 kg for the basic clamp kit, 1.2 kg with the thickness probe and case.
Accuracy: ±0.05 mm for wall thickness up to 50 mm, ±0.1 percent of reading for thicker walls.
Which Dynasonics Models Need a Pipe Sizer
The pipe sizer works as a standalone tool and integrates best with the Dynasonics TFX-5000 portable clamp-on meter. The TFX-5000 has a direct input channel for the sizer’s OD and thickness data via Bluetooth. The DXN portable ultrasonic meter also accepts manual data entry from the sizer reading screen. The UFX series inline spool-piece meters do not need a sizer because you know the spool dimensions. For this reason we ship a pipe sizer in every TFX-5000 starter kit sold to Southeast Asia and the Middle East.
What We Ship to Your Location
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Actual Site Example
Last November a water treatment plant in Surabaya ordered six TFX-5000 ultrasonic flow meters for their brine lines. The pipes were old DN150 CS with external corrosion. The plant engineer could not verify the original wall thickness. We supplied two pipe sizer kits. The field crew measured actual OD as 167.2 mm instead of the nominal 168.3 mm, and wall thickness down to 6.1 mm from an original 7.1 mm. They input the real values and the flow meters tracked within 0.5 percent of the plant magmeter reference. Without the sizer they would have set the flow computer to a wrong cross-section and wasted four weeks troubleshooting.
Pricing and How to Get a Quote
The pipe sizer cost sits between USD 800 and USD 2,400 depending on the pipe range and whether you need wall thickness capability. OEM branding with your company logo is available at quantities above 50 units. We keep stock in our Nanjing warehouse for orders under 10 pieces. For your quotation, tell us your typical pipe sizes (minimum and maximum DN), pipe materials, and if you need ATEX or IECEx certification for Zone 2. Reach us on Tel: +86-135-1213-1526, Whatsapp: 86-135-12131526, or WeChat: +86 13512131526. We reply within the hour during Asia business time.
Frequently Asked Questions
Q: Can I use the pipe sizer with a non-Dynasonics flow meter?
A: Yes. The tool outputs standard OD and wall thickness values. You can manually enter the numbers into any brand of clamp-on ultrasonic flow meter or thickness gauge. We have customers who pair it with Siemens, Flexim, and Fuji Electric flow meters.
Q: Does the sizer measure lined pipes correctly?
A: The OD measurement is accurate regardless of lining. The wall thickness probe measures total wall including the liner. If you need liner thickness only, you must subtract the base pipe thickness from a nearby unlined section or use a separate echo-to-echo mode available in the higher-end sizer models.
Q: How often do I need to calibrate the pipe sizer?
A: We recommend annual verification using the supplied calibration block. The digital OD clamp uses a zero-point reset that takes 5 seconds in the field. The thickness probe should be checked on a known 5 mm and 25 mm step block once a month if used daily.
Q: Do you supply Ex-certified pipe sizers for oil and gas sites?
A: Yes. Our Ex-rated version carries ATEX Zone 2 (II 3G Ex ic IIC T4 Gc) and IECEx certification. The battery pack is sealed and the Bluetooth module switches to low-energy BLE mode. Delivery adds 2 weeks for the certified units.
Q: What if my pipe is wet or sweaty during measurement?
A> Wipe the contact area dry and apply the included couplant gel for the thickness probe. The OD clamp does not need dry surface, but heavy rust or scale must be ground flat within a 20 mm by 20 mm patch for accurate wall thickness reading. We include a grinding disc with each coastal-region kit shipped to the Middle East and Southeast Asia.
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