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Portable Flow Meter: Transit-Time Handheld Pipeline Inspection Systems
Quick Answer: Silver Automation Instruments supplies clamp-on, transit-time handheld flow meters that let you inspect pipelines from the outside without cutting, draining, or stopping the process. The meter works on pipe sizes from DN15 up to DN6000 and delivers real-time flow data on a color display. If you send us your pipe size (DN), fluid, temperature, and pressure, our team will return a full kit quote within 24 hours.
How the Transit-Time Handheld Kit Works in the Field
You mount two matched transducers on the outside of the pipe. The meter fires ultrasonic signals upstream and downstream through the pipe wall. Because the moving fluid carries the signal, the travel time changes slightly. The handheld unit measures this time difference and calculates flow velocity with no contact to the liquid. Most engineers skip the heavy theory here and just rely on the stored pipe material and wall thickness tables. Choose carbon steel, SS316, PVC, or copper in the menu, and the meter does the rest. This makes the kit a practical tool for quick audits in water networks, oil transfer lines, and chemical dosing pipes. We have seen a paint manufacturer in Vietnam use it to check solvent flow on a poorly documented DN80 line in less than ten minutes.
Key Specifications and Sensor Ranges
We offer the Silver Instruments handheld series with standard and high-temperature transducer options. The transmitter measures flow velocity from 0.01 m/s to 12 m/s. Accuracy reaches ±1.0 % of reading for pipes DN50 and larger, with repeatability of 0.2 %. Standard clamp-on probes work from -40°C to +150°C pipe surface temperature. For smaller lines down to DN15, we supply a small-pipe fixture set with magnetic guides. On large pipelines up to DN6000, the large-pipe sensors maintain signal strength even if the internal scale is moderate. The data logger stores up to 10 million data points on a 32 GB card. Outputs include 4-20 mA, pulse, and RS485 Modbus, so you can send data to a plant recorder or SCADA during a 24-hour survey. The rechargeable battery runs for 16 hours continuous use, and you can charge it via USB-C in the field.
Typical Pipeline Inspection Applications
Oil and gas teams in Nigeria use our portable meter to verify produced water rates without breaking flange connections. Water utility staff in Malaysia check pump station flows on old cement-lined ductile iron pipes during non-revenue water audits. In Saudi Arabia, desalination plant maintenance crews clamp the transducers onto brine lines to confirm the permanent magnetic flow meter readings. A dye and pigment factory in Mexico tested cooling water return lines on DN200 carbon steel pipes, then ordered a dedicated kit for their quarterly health checks. Because the measurement is completely external, you can move the meter from one test point to another in under five minutes. In practice, many of our customers keep one handheld unit across multiple sites to troub
What You Get in the Transit-Time Portable Kit
Every order from Silver Automation Instruments includes the handheld transmitter unit, a matched pair of transducers, magnetic mounting fixtures, acoustic coupling gel, signal cables (5 m length), a rugged carrying case, USB charger, and a factory calibration certificate. We also ship a printed quick-start guide and a USB stick with the full manual and data export software. If your pipe has heavy external rust, we add a wire brush and extra coupling pads. For outdoor inspections in sunny conditions, the high-contrast display remains readable without shading.
Request a Quote and Typical Lead Time
To give you an accurate price, we need your operating parameters. Send us your pressure (bar), temperature (°C), pipe size (DN), pipe material, and wall thickness if you know it. Also tell us the fluid type and normal flow range. We reply with a formal quotation that includes the correct sensor set, shipping cost (DHL Express or sea freight), and delivery time. Most orders to Southeast Asia, the Middle East, and Latin America ship within 5 working days after payment confirmation. Contact us directly at the details below.
Email: [email protected]
Tel: +86-135-1213-1526
Whatsapp: 86-135-12131526
WeChat: +86 13512131526
Portable Flow Meter FAQ
Can the meter measure on old, rusty pipes without cleaning the surface?
Yes, but you should clean a test spot with the supplied brush. Remove loose scale and paint, apply the coupling gel evenly, and the signal will pass through. If the internal lining is thick or delaminated, the meter will show a low signal error. In that case, try a different spot or use a thickness gauge first.
How long does a full survey on battery power last?
The battery supports 16 hours of continuous measurement. We recommend charging it overnight with the standard USB-C cable. You can also run the meter from a power bank during long logging sessions.
Do you offer ATEX or IECEx certified versions for hazardous areas?
We have an ATEX Zone 2 certified model for gas environments. For Zone 1 or dust-certified requirements, please contact us with the exact classification and temperature class. We can often supply a compliant system with intrinsically safe barriers.
What is the smallest pipe size the handheld meter can handle?
With the dedicated small-pipe transducer kit, we measure down to DN15 (outer diameter 21.3 mm for standard steel pipes). You need precise transducer spacing, and the magnetic guide rail makes alignment fast and accurate.
Can I leave the meter logging data for a full day without a laptop?
Yes. The internal data logger can record flow, totalizer, and diagnostic data for a full 24-hour or even 7-day survey. After you finish, export the .csv file to a USB drive and analyze it in Excel.
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