Micronics Portaflow 333 Portable Ultrasonic Flow & Heat Meter

Overview

Micronics Portaflow 333 is a portable, battery-powered clamp-on ultrasonic flow and heat meter engineered for engineers who need accurate flow verification without cutting into a pipe or interrupting a process. Combining transit-time ultrasonic flow measurement with an integrated heat/energy calculation mode compliant with EN1434, the Portaflow 333 covers an exceptionally wide pipe range from 13mm to 2000mm OD using interchangeable ‘A’ and ‘B’ transducer sets, making it equally suited to small HVAC branch lines and large district cooling headers.

With engineering support in Muscat, Seven Star LLC supplies the Portaflow 333 to facility engineers, energy auditors, and mechanical contractors throughout Oman and the wider GCC, with full technical support and lead time confirmed at quotation.

Measurement Principle

The Micronics Portaflow 333 uses the transit-time ultrasonic method, clamping a pair of transducers onto the outside of the pipe wall and measuring the difference in travel time between an ultrasonic pulse sent with the flow direction and one sent against it. Because fluid velocity accelerates the downstream pulse and retards the upstream pulse, the transit-time difference is directly proportional to volumetric flow rate, and the instrument’s onboard processor converts this into a live flow reading, totalized volume, and – when heat mode is selected – an EN1434-compliant thermal energy calculation using a paired set of temperature sensors monitoring flow and return legs.

Because the transducers never contact the fluid and nothing is inserted into the pipe bore, the Portaflow 333 introduces no moving parts, no pressure drop, and no risk of process contamination – a decisive advantage over insertion turbine or paddlewheel meters in hygienic, chemical, or high-pressure lines where opening the pipe is costly or operationally impractical.

Engineering Design of the Micronics Portaflow 333

The Micronics Portaflow 333 is housed in a rugged, high-visibility yellow enclosure built for site use, with a backlit alphanumeric display, membrane keypad, and an internal rechargeable NiMH battery pack delivering roughly 14 hours of continuous operation from a 2.5-hour charge cycle. The instrument accepts either the standard ‘A’ transducer set for pipes from 13mm to 115mm OD or the ‘B’ transducer set for larger 50mm to 2000mm OD pipes, both secured with adjustable clamping chains or straps that require no drilling, welding, or process shutdown to install.

Standard transducers operate from –20°C to +135°C, with an optional high-temperature variant extending coverage to +200°C for steam-adjacent or process-heated lines. Onboard connectivity includes an opto-isolated pulse/frequency output, an optically isolated 4–20mA output (1500V isolation, 620 ohm maximum load), and an internal data logger with capacity for 100 million data points across up to 12 named sites, downloadable via USB in CSV format for reporting and trend analysis.

Key Features

The Micronics Portaflow 333 pairs portability with instrumentation-grade accuracy, and its feature set reflects years of field-driven refinement for demanding site conditions:

• Non-invasive clamp-on transducers install in minutes on pipes from 13mm to 2000mm OD without cutting, drilling, or draining the line.
• Integrated EN1434-compliant heat and energy metering mode calculates thermal energy alongside standard volumetric flow.
• Accuracy of ±0.5% to ±2% of reading on pipes above 75mm ID, with ±2% typical accuracy maintained down to 13mm.
• Bi-directional flow velocity range of 0.1 to 10 m/sec covers everything from near-static leak checks to high-velocity trunk mains.
• Rechargeable NiMH battery delivers up to 14 hours of continuous field operation from a 2.5-hour charge.
• Onboard data logger stores up to 100 million time-stamped readings across 12 named sites, exportable to CSV via USB.
• Optional high-temperature transducer variant extends operation to +200°C for process-heated and steam-adjacent applications.
• Dual output options – opto-isolated pulse/frequency and isolated 4–20mA – integrate directly with BMS, SCADA, and data acquisition systems.

Industrial Applications

The Micronics Portaflow 333 is widely deployed across Oman and the Sultanate’s district cooling networks, where facility teams use it to verify chilled water balancing across branch circuits in commercial towers, hospitality developments, and hospital complexes without shutting down HVAC service. In RO desalination and municipal water treatment plants across the region, engineers rely on its wide pipe range and portability to spot-check flow across raw water intakes, permeate lines, and distribution headers where permanent metering is impractical or where a second, independent verification reading is required for commissioning and audit purposes.

Seven Star LLC supplies the Portaflow 333 to energy auditors, mechanical contractors, and industrial facilities throughout the Sohar and Salalah economic zones, supporting district heating and cooling energy audits, pharmaceutical and food processing utility surveys, and semiconductor and manufacturing cooling water verification, with manufacturer documentation and Omani and GCC-based technical support.

Technical Specifications

The table below summarizes the core specifications of the Micronics Portaflow 333: this Micronics Portaflow 333 portable ultrasonic flow and heat meter covers a wide pipe and temperature range.

Request a Quote for Micronics Portaflow 333 Portable Ultrasonic Flow & Heat Meter

For procurement of the Micronics Portaflow 333, Seven Star LLC invites facility engineers, energy auditors, and procurement teams across Oman and the GCC to request a formal quotation for the Micronics Portaflow 333. Working closely with plant engineers in the region, Seven Star LLC supplies on request with lead time confirmed at quotation, provides full technical datasheets on request, and offers direct access to its instrumentation division for application support and technical support with selection. Contact Seven Star LLC today to arrange a formal RFQ, request the technical datasheet, or discuss integration of the Portaflow 333 into your site’s flow verification and energy auditing program.

Browse the full Micronics range or see more Flowmeters products supplied by Seven Star LLC in Oman and the GCC.