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Ultrasonic Flow Meter Portable: Handheld Field Inspection Liquid Kits
Quick Answer: A portable ultrasonic flow meter kit lets you measure liquid flow from outside the pipe. You clamp sensors onto the pipe, apply coupling gel, and get readings in minutes. Silver Instruments supplies complete handheld kits with transducers, display unit, and rugged case, covering pipe sizes from DN15 to DN6000.
Many field service teams in Southeast Asia and Oceania use these kits to verify existing flow meters, audit water networks, or troubleshoot cooling systems. The clamp-on method means no pipe cutting, no pressure drop, and no risk of leaks. Everything runs on a rechargeable battery that lasts a full day of inspections.
What Comes in a Handheld Ultrasonic Flow Meter Kit
A typical Silver Instruments portable kit includes two clamp-on transducers. The standard pair handles pipes from DN25 to DN100. For larger lines up to DN6000, we supply bigger transducers with magnetic mounting. You also get stainless steel straps, a tube of coupling compound, and a handheld transmitter. The transmitter has a backlit LCD that shows flow rate in m³/h, totalized volume, and signal strength. It stores data logs for up to 2,000 measurement points and transfers them via USB. Everything fits in a foam-lined IP67 carry case that survives the back of a ute or a boat in the Pilbara.
How Engineers Use It for Field Inspections
Most engineers walk to a pipe, clean a small patch with a wire brush, apply coupling gel, and strap the sensors on. The transmitter menu guides you through pipe material, diameter, and wall thickness. On a clean DN50 steel pipe this takes less than eight minutes. Flow readings appear in real time. You can log data every five seconds or set a longer interval.
In practice, teams use one kit to check multiple points. A water utility in Malaysia mapped flow balance across 15 district metering areas with a single portable unit over three days. Because the sensors clamp outside, the crew never interrupted water supply. We have seen similar routines in a Chilean copper mine checking reagent dosing lines, and in a Saudi Arabian chemical plant verifying pump output. Here is the thing: the quickest way to get reliable data is to keep the pipe surface smooth and use enough coupling compound. A rough or painted surface can drop signal strength below usable levels. A quick grind fixes that.
Key Specifications and Sensor Options
Flow velocity range from 0.01 m/s to 12 m/s. Accuracy is ±1.0 percent of reading under good straight pipe conditions. Repeatability is 0.2 percent. The standard transducer set works on pipe outside diameters from 25 mm to 120 mm, and larger ones go up to 6000 mm. Sensor operating temperature goes up to 80 °C for standard versions. High-temperature clamp-on sensors reach 180 °C and suit steam condensate lines or heat transfer oil loops. Pipe materials include carbon steel, stainless steel, PVC, HDPE, copper, and even concrete-lined pipe. The transmitter outputs 4-20 mA active loop, frequency pulse, and RS485 MODBUS RTU. A built-in diagnostic screen shows signal quality and transit time difference in microseconds, so you know exactly how strong the measurement is.
Liquids and Industries Where It Fits
The clamp-on ultrasonic method works with reasonably clean liquids that contain less than three percent suspended solids or gas bubbles.
Why Choose Silver Instruments Portable Ultrasonic Kit
Silver Instruments stocks complete kits in our Nanjing warehouse. We ship to Southeast Asia, Oceania, Middle East, Africa, and Latin America in five to seven working days via DHL or sea freight. Every kit comes with a printed English manual and a calibration certificate traceable to national standards. Our application engineers are on WhatsApp and WeChat during business hours, and we often help customers on site in real time. If the signal is erratic, send a photo of the pipe surface and the signal screen, and we walk you through the troubleshooting steps.
For a quotation, send us your pipe outer diameter, wall thickness, liquid type, and temperature. Tell us if you need high-temperature sensors or a longer cable. We return a full spec sheet and price within one business day.
Contact Silver Automation Instruments:
Tel: +86-135-1213-1526
WhatsApp: 86-135-12131526
WeChat: +86 13512131526
Frequently Asked Questions
Can the meter measure flow in vertical pipes? Yes, but you must have a full pipe. Install sensors on a vertical section with upward flow. This prevents air pockets that destroy the ultrasonic signal. Many engineers prefer a vertical run with a few straight diameters upstream.
What if the pipe has internal scale or rust? Thick scale scatters the ultrasound and reduces signal strength. A short section can be ground or wire-brushed to expose bright metal. On PVC or HDPE, cleaning with a rag is enough. The transmitter shows signal quality as a percentage, so you will know immediately if the surface needs more work.
Is the kit suitable for custody transfer measurement? The portable ultrasonic kit is mainly for field inspection, maintenance audits, and temporary flow checks. It is not a legally traceable custody transfer meter. For billing applications, a fixed installation with a certified meter and flow straightener is required. The portable unit still helps verify if your permanent meter is drifting.
How long does the battery last during a full day of spot measurements? The internal Li-ion cell provides 16 hours of continuous operation. In typical field use, where you start and stop the meter between measurement points, it easily lasts two shifts. A full recharge takes about four hours. You can also run the transmitter from a standard USB power bank if needed.
Do you offer a transit-time only model or a Doppler option for dirty water? We supply transit-time portable kits because they give higher accuracy on clean liquids. For dirty water with suspended solids above three percent, a Doppler portable flow meter is more suitable. Silver Instruments can provide a dedicated Doppler kit if you specify the solids content when you send the inquiry.
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