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Panametric Ultrasonic Flow Meter: Sourcing Transit-Time Pipeline Transducers
Quick Answer: For a Panametric ultrasonic flow meter, the transducer pair defines accuracy and long-term stability. Silver Automation Instruments supplies replacement transducers and complete spool-piece meters for clean liquids in full pipes. Send your pipe size, pipe material, temperature, and flow range, and we will return a quote with a compatible transducer set.
Confirm the Transducer Frequency and Pipe Size
Transit-time ultrasonic transducers operate at different frequencies based on pipe diameter. A DN50 carbon steel water line commonly uses a 1 MHz transducer pair. A DN300 cement lined ductile iron pipe may use a 500 kHz set. Small DN15 to DN25 tubes often require a 2 MHz or higher frequency. If you install the wrong frequency pair, the signal may be too weak or may not reach the opposite side.
Pipeline transducers come in clamp-on, insertion, and wetted spool-piece formats. Clamp-on suits temporary flow surveys and retrofit work. Insertion types work on larger pipes from DN80 to DN3000. Wetted transducers in a metering section deliver the most stable reading for custody transfer and batch control.
Match the Transducer to Liquid and Temperature
We ask for liquid type, solids loading, and gas bubble content before quoting. Clean water, demin water, light hydrocarbons, and seawater work well with transit-time. Liquids with more than 3 percent solids or heavy aeration can make the signal unstable. For wastewater with sludge, a Doppler ultrasonic flow meter may be a better fit.
Temperature changes the transducer housing and coupling. Standard clamp-on transducers handle -40 °C to 150 °C. For high temperature lines above 150 °C, we supply high temperature fixtures and waveguide transducers. Always confirm the pipe wall temperature under real operating conditions, not just the process design temperature.
Piping Conditions That Affect Sourcing
The transducer needs a clean pipe surface and a full pipe. Here is the thing, upstream straight run matters more than many people expect. We recommend 10 straight diameters upstream and 5 downstream for a single plane path. For custody transfer or fiscal metering, a dual path or four path spool meter may be needed. A customer in Indonesia measured boiler feedwater on a DN200 line with only 4 diameters upstream. The reading shifted by 2.1 percent until we moved the transducer set.
Pipe material matters too. Carbon steel, stainless steel, copper, and PVC transmit sound well. Concrete, fiberglass, and lined pipes need extra coupling confirmation. We ask for the pipe schedule, liner type, and wall thickness because a small wall thickness error changes the acoustic path length.
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Most replacement transducers connect to a transmitter with a coax cable. The transmitter can deliver 4-20 mA HART, pulse, and RS485 Modbus. For hazardous areas, we supply ATEX Zone 1 or Zone 2 rated transducer housings and cable glands. We also match PT100 inputs when the meter includes temperature compensation for energy flow measurement.
Transducer Cable and Connector Matching
Replacement transducers must match the existing cable impedance and connector. Common coaxial cables are RG58 and RG174 in lengths from 5 m to 150 m. If the cable length changes, the transmitter may need a signal gain adjustment. We can preconfigure the transmitter for long cable runs before shipping.
How to Request a Quote Without Delay
For a fast quote, send the pipe size in DN, pipe material, wall thickness, liquid type, pressure in bar, temperature in °C, and flow range in m3/h. Add the area classification if the meter sits in a hazardous zone. We will propose a compatible Panametric style transducer set, cable length, and transmitter option. Our team ships to Southeast Asia, Oceania, Latin America, Africa, and the Middle East.
Contact Silver Automation Instruments by Tel: +86-135-1213-1526, WhatsApp: 86-135-12131526, or WeChat: +86 13512131526. Tell us the site location and the current meter model when available. More product details are available at flow-meter.com.au.
FAQ: Panametric Ultrasonic Flow Meter Transducer Sourcing
Can you replace only the transducers on an existing Panametric ultrasonic flow meter?
Yes. We supply clamp-on and wetted transit-time transducer pairs with the same frequency and connector configuration for many Panametric style flow meters. Send us the existing transducer model or a photo.
What is the minimum pipe size for a clamp-on transit-time transducer?
We support DN15 and larger pipes. For DN15 to DN25, a 2 MHz transducer pair is common. The pipe surface must be clean and the pipe must run full.
Do you supply transducers for seawater desalination plants?
Yes. We have supplied clamp-on and insertion transducers for seawater, brine, and demin water lines in desalination plants. Specify the salinity and temperature for material selection.
How do I know if I need a Doppler meter instead?
If the liquid has more than 3 percent solids, entrained gas, or large bubbles, transit-time may fail. A Doppler ultrasonic flow meter works better for slurries and aerated water. Our sales team can help you choose after one call.
What information do you need for a fast quote?
Pipe size, pipe material, wall thickness, liquid type, temperature, flow range, and hazardous area class. A photo of the existing transducer helps us match the connector and cable.
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