Apex

Clamp-on Ultrasonic Flow Meters

Apex , Well Testing has developed its own set of fabrication specifications to ensure that equipment used by Apex Petroleum Services, Well Testing meets or exceeds all local requirements. Apex Petroleum Services, Well Testing specifications are primarily based on the following worldwide recognised specifications:

Equipment Design and Fabrication Specifications

  • API Spec 6A – Specification for Valves and Wellhead Equipment
  • ASME VIII For construction of pressure vessels , Div 1&2
  • API RP 14C – Recommended Practice for Analysis, Design, Installation, and Testing of Basic Surface Safety Systems on Offshore Production Platforms
  • NACE MR-01-75
  • Product Specification Level (PSL) 3
  • Material Class DD
  • Temperature Class P&X (-20° F to +350° F)
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Clamp-on Ultrasonic Flow Meters

Apex’s Metering Solutions offers a comprehensive suite of technologies for single-phase and multiphase flow applications. This provides customers with data that assists in evaluating production performance, efficient management of reserves, production optimization, and prioritizing well interventions.

Apex Meters are non-intrusive and determine the bulk flow velocity/actual bulk volumetric flow rates of the fluid medium in the pipe without any flow interruption or pipe modification. There’s no need to shut down production to open the pipe.

Apex flow meters are highly versatile and can be used in various industries and applications. One of the significant advantages of Apex non-intrusive flow meters is their ability to handle a wide range of fluid types, temperatures, and pressures. Whether it’s a high-temperature steam line or a low-viscosity liquid, these clamp-on flow meters provide accurate measurements. Another significant advantage is that many models are portable and can be used in hard-to-reach locations.

Measurement Principles

Apex clamp-on ultrasonic systems determine the volumetric flow rate according to the transit-time difference method. Since the ultrasonic signal that is irradiated into the pipe is carried by the fluid flowing inside, a time delay occurs between the acoustic transit time both with and against the flow of direction. This time delay can be measured very accurately. The transmitter calculates the volumetric flow rate based on the parameters input for the pipe geometry and the physical properties of the fluid stored in the internal database.

Applications:

  • Wellhead gas/condensate production surveillance: dry or type I/II wet gas flow measurement
  • Gas injection/gas lift
  • Water injection
  • Downstream gas and liquid flow rate measurement

Key Features Include:

  • Suitable for both gas and liquid flow measurement
  • Accommodates a wide range of flow rates and operating pressures
  • Independent of pipe wall thickness and material type
  • Fully non-intrusive clamp-on design—no process interruption
  • Zero pressure drop and no risk of leakage
  • Resistant to corrosive and erosive fluids
  • Engineered for reliable, long-term performance in harsh environments

Technical Specifications

  • Fluid Type: All gases, All Liquids
  • Pipe Diameter: 2” to 32” NPS
  • Flow Velocity Range: 0.01 to 50 m/s, Depending on pipe diameter
  • Accuracy: Measurement uncertainty of the measuring system (volumetric flow rate): ±0.3 % of reading ±0,005 m/s (±0.02 ft/s)
  • Repeatability: 0.15 % of reading ±0,005 m/s (±0.02 ft/s)
  • Process Temp: -45°C to +240°C
  • Analog Output: 4-20mA
  • Power Supply: 100-230VAC, 24VDC, 12VDC
  • Communication Protocol: Modbus RTU/TCP
  • Hazardous area classification: ATEX: Zone 1, IECEx: EPL Gb

Other sizes and configurations are available to meet most applications. For more information, contact your local Apex Petroleum Services representative.