Flexim Flow Meters and Flexim Ultrasonic Flow Meters for High-Temperature Clamp-On Permanent Monitors

Quick Answer: Flexim flow meters are clamp-on ultrasonic devices that measure liquid flow without touching the process fluid. Flexim ultrasonic flow meters can serve as high-temperature clamp-on permanent monitors on metal or plastic pipes up to 200 °C. Silver Automation Instruments supplies comparable clamp-on ultrasonic flow meters for water, chemicals, hot oil, steam condensate, and heat metering. Send your pipe size in DN, fluid type, temperature in °C, pressure in bar, and flow range for a price quote.

What Flexim Flow Meters Do in High-Temperature Service

Flexim ultrasonic flow meters use transit-time measurement. A pair of clamp-on transducers sends ultrasonic signals through the pipe wall and the moving fluid. The meter calculates flow velocity and turns it into volumetric flow. Because there are no wetted parts, the design works for aggressive fluids, high-purity water, and hot liquids. We have quoted this type of meter for a chemical plant in Thailand handling hydrochloric acid at 85 °C through a CPVC pipe, DN80. The customer requested 4-20 mA HART output and a local display.

Why Use High-Temperature Clamp-On Permanent Monitors

Permanent clamp-on monitors avoid process shutdown. Inline magnetic flow meters and Coriolis mass flow meters require flanges, gaskets, and pipe cutting. Flexim flow meters and similar Silver Instruments models install on the outside of the pipe. A maintenance team can add a meter between two shifts without breaking the line. For permanent service, the most important factors are clean pipe surface, proper transducer spacing, and enough straight run. We recommend 10 pipe diameters upstream and 5 pipe diameters downstream for most clean liquids. Gas service needs more upstream length.

High-temperature clamp-on permanent monitors need special transducer pads and couplant. Standard transducers work for ambient water and low-temperature chemicals. For hot lines above 150 °C, we use high-temperature ceramic transducers and mounting brackets. A refinery in Oman asked us about a permanent clamp-on monitor for boiler feed water at 160 °C on a DN150 carbon steel pipe. The flow range was 40 to 120 t/h. We supplied a clamp-on ultrasonic flow meter with PT100 inputs, Modbus RTU output, and a weatherproof IP66 transmitter. The installation stayed in service without process shutdown.

Silver Instruments Clamp-On Ultrasonic Flow Meter Range

Silver Instruments supplies clamp-on ultrasonic flow meters for liquid and some gas applications. We cover pipe sizes from DN15 to DN1200. Outputs include 4-20 mA, pulse, HART, RS485 with Modbus RTU, and relay alarms. For heat metering, we include PT100 temperature sensors and a flow computer. Our high-temperature transducers handle continuous service up to 200 °C. Common sizes ship in 2 to 4 weeks. A water treatment plant in Vietnam recently installed 12 Silver Instruments clamp-on meters on DN100 and DN200 raw water lines. The plant replaced old mechanical meters and reduced maintenance time.

To get a quote, send your pipe outside diameter, wall thickness, fluid name, temperature in °C, pressure in bar, and flow range in m3/h or kg/h. Contact Silver Automation Instruments at Tel: +86-25-68650347, WhatsApp: +86-25-52155837, or WeChat: +86 15365082610. You can also send an inquiry through flow-meter.com.au or www.silverinstruments.com.

What Data You Need for a Flexim Style Clamp-On Flow Meter Quote

Most engineers skip this part and then face delays. We need the pipe outside diameter and wall thickness. The fluid type affects sound speed. The temperature affects transducer choice. The flow range decides sensor spacing. For clean water at 25 °C, standard transducers are enough. For cooling water at 400 µS/cm and 30 °C, the meter setup is straightforward. For high-viscosity fluids above 100 cP, signal attenuation increases and we may need a different transducer frequency. A dairy plant in Australia asked for a meter on a CIP return line with 2 percent caustic at 70 °C. The pipe was SS316, DN50, and the flow range was 5 to 50 m3/h. We supplied a clamp-on meter with 4-20 mA HART and Modbus RTU. The site compared the reading against a balance tank and found error under 1 percent.

FAQ

Are Flexim flow meters accurate for high-temperature clamp-on permanent monitoring? Yes. Transit-time clamp-on meters from Flexim and Silver Instruments can reach 0.5 to 1 percent of reading on clean liquids. High-temperature transducers keep signal quality stable up to 200 °C.

Can clamp-on ultrasonic flow meters be used on gas pipes? Some models can. Flexim ultrasonic flow meters include gas versions, but high-temperature gas service is harder. We recommend sending gas composition, pressure, and pipe schedule before choosing a meter.

Do clamp-on flow meters work on lined pipes? Some linings reduce signal. Thick rubber, cement, or loose liners can block ultrasonic transit-time pulses. We ask for pipe wall thickness and liner type during quotation. Thin epoxy or PTFE liners under 2 mm are usually acceptable.

What outputs do permanent clamp-on monitors offer? Standard outputs include 4-20 mA HART, pulse, RS485 with Modbus RTU, and relay alarms. For energy monitoring, add PT100 temperature inputs. We can supply ATEX Zone 1 versions for hazardous areas.

How fast can Silver Instruments deliver a clamp-on flow meter? Common sizes ship in 2 to 4 weeks. High-temperature transducer sets for DN100 to DN600 may take 4 to 6 weeks. Send your full specification for a confirmed lead time.

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