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Industrial Ultrasonic Clamp On Flow Meter Kits for On-Site Audits
Quick Answer: A clamp-on ultrasonic flow meter kit lets you measure flow without cutting pipes or shutting down the line. Silver Instruments supplies complete audit kits with transducers, coupling gel, a portable transmitter, and a heavy-duty case. Field engineers use these kits to verify billing meters, check pump performance, and troubleshoot heat exchanger flows in oil and gas, water treatment, chemical, and food plants.
Why Auditors and Service Teams Choose Clamp-On Kits
Many industrial sites still rely on in-line flow meters that drift over time. Draining a DN150 pipe to pull out a magmeter is not practical during a short site visit. A clamp-on kit solves this. You strap the transducers on the outside of the pipe and get a flow reading in 15 minutes.
Silver Instruments pre-configures each kit for a specific pipe material and size range. Common materials include carbon steel, SS316, PVC, and HDPE. One kit covers DN25 to DN1200. We also offer high-temperature brackets for pipes up to 180degC.
What Is Inside a Silver Instruments Audit Kit
The standard kit includes a portable clamp-on transmitter, a pair of clamp-on transducers, stainless steel mounting fixtures, a roll of acoustic coupling compound, a tape measure, and a rugged IP67 carry case. The transmitter logs flow rate, totaliser, velocity, and signal quality. You can export data via USB or Bluetooth to a tablet.
Power comes from a built-in rechargeable lithium battery. A full charge lasts 16 hours of continuous measurement. No external power supply is needed. This matters a lot when you audit flow meters on offshore platforms or remote pump stations in Africa or Latin America.
Industries That Rely on Portable Ultrasonic Flow Kits
Water and wastewater plants use clamp-on meters to check raw water intake flows and effluent discharge. In the Middle East, desalination plants often audit their brine reject lines with a clamp-on kit because the high salinity kills magnetic flow meter electrodes.
Oil and gas terminals test loading bay flow meters for bunkering fuel. A petroleum depot in Durban, South Africa, reported a 2.3 percent meter error using our kit. That saved them from a billing dispute with a tanker company.
Chemical plants in Thailand use the kit to balance cooling water loops. Food and beverage factories audit CIP return flows on stainless pipes. HVAC service teams measure chilled water and hot water flows in district cooling networks in Australia.
Key Technical Specifications for Audit Kits
Accuracy: plus minus 1.0 percent of reading for DN50 and above. Repeatability: 0.2 percent. Velocity range: 0.01 to 25 m/s. Pipe diameter range: DN15 to DN6000. Medium temperature: -30degC to 160degC (higher on request). Outputs: 4-20 mA, pulse, RS485 Modbus RTU, and Bluetooth. The transmitter is IP66 rated. ATEX Zone 2 certification is available for gas environments.
In practice, you must enter the pipe material, wall thickness, lining, and fluid type. The meter uses transit-time technology. For clean liquids with less than 10,000 ppm solids or 3 percent gas bubbles, the reading is stable. We have seen many engineers skip the pipe wall thickness measurement and then wonder why the signal drops. Measure it
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How to Prepare for an On-Site Flow Audit
Before you go to site, ask the plant operator for these six numbers: pipe OD, wall thickness, material, lining type and thickness, fluid type, and expected flow range. This takes 10 minutes but saves hours of trial and error on site.
Also check the straight run availability. The kit needs 10D upstream and 5D downstream straight pipe for full accuracy. If you have limited space, we can apply a correction factor, but the uncertainty will increase slightly. Most engineers accept this trade-off during a preliminary audit.
Here is the thing: many plants have painted or rusty surfaces. Bring a wire brush and degreaser. Clean the pipe to bare metal before applying coupling gel. Otherwise the ultrasound signal attenuates and you get no reading.
Why Buy from Silver Automation Instruments
We ship audit kits from Nanjing to Southeast Asia, Oceania, the Middle East, Africa, and Latin America. Every kit is factory tested on a carbon steel spool and a PVC spool before dispatch. We include a calibration certificate traceable to China National Accreditation.
Our support engineers speak English, Spanish, and Arabic. They can walk your team through the first setup via video call. We do not charge for this service if you buy the kit from us.
Frequently Asked Questions
Can I measure flow on a pipe with heavy internal scale?
Yes, but you must measure the actual wall thickness including scale using an ultrasonic gauge. Enter the total thickness into the transmitter. Expect a slightly lower signal strength. A test on a 20-year-old DN200 cooling water pipe in Vietnam gave a stable reading after this adjustment.
What pipe materials are not compatible with clamp-on meters?
Concrete, fibre-reinforced plastic with large air pockets, and heavily corroded cast iron can scatter the ultrasound signal. For these pipes, we suggest an insertion probe or an inline meter. Send us your pipe photos and we can advise before you buy.
Do I need to stop flow to install the transducers?
No. The transducers mount on the outside of the pipe. Flow continues during the entire audit. This is the main reason plant managers prefer clamp-on kits for production-critical lines.
How long does it take to get a quotation and lead time?
We reply within 4 business hours for most regions. Standard stock kits ship in 3 working days. Custom high-temperature or large-pipe kits take 10 to 15 days. Email [email protected] with your pipe details and we will send a formal quotation the same day.
Can the kit measure bidirectional flow?
Yes, all Silver Instruments clamp-on transmitters support bidirectional flow measurement. You can log both forward and reverse totalisers. This is useful for ring main audits where flow can reverse during backwash or pump switching.
To request a quote or ask a technical question, send your pipe OD, wall thickness, material, fluid type, temperature, pressure, and flow range to [email protected]. You can also call +86-135-1213-1526 or reach us on WhatsApp at 86-135-12131526. WeChat users can add +86 13512131526.
Visit our website at flow-meter.com.au to see the full clamp-on flow meter kit range.
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