TMCO TrueShot UIM-4F Ultrasonic Flow Meter

The TMCO TrueShot™ UIM 4F is a four-path ultrasonic flow meter designed for demanding natural gas and industrial gas measurement applications where accuracy, reliability, and regulatory compliance are critical. By continuously integrating measurements from multiple ultrasonic paths, the meter maintains precise flow calculations even when operating conditions change due to pressure fluctuations, velocity profile variations, gas composition changes, or upstream piping disturbances.

The UIM 4F Duo expands on this capability by combining two independent ultrasonic measurement systems within a single solution. The primary four-path meter delivers custody transfer accuracy, while an additional three-path measurement system provides secondary verification and enhanced diagnostic capabilities for condition-based maintenance and system health monitoring.

Built for hazardous and industrial environments, both models feature intrinsically safe operation, advanced communication options, local display access, and extensive diagnostic tools for long-term performance optimization.

Key Features

• Four-path ultrasonic measurement technology for high-accuracy flow measurement
• Designed for custody transfer and allocation metering applications
• Tested to meet AGA-9 recommendations
• OIML R137 Class 0.5 certification
• MID 2014/32/EU approval
• Available in sizes from 3 inches and larger
• Flange ratings up to Class 900
• Broadband Continuous Wave ultrasonic processing technology
• Simultaneous multi-path signal transmission for rapid response
• Advanced flow-profile diagnostics
• Path Substitution Algorithm for continued operation during path interruptions
• Intrinsically safe design suitable for hazardous locations
• Rugged all-metal ultrasonic transducers
• Local graphic display with keypad interface
• RS485 Modbus communications
• Optional pressure and temperature sensors for PTZ conversion
• Retractable transducer capability for maintenance under pressure
• UIM 4F Duo includes an independent three-path verification meter and enhanced diagnostics

Benefits

• Improved Measurement Accuracy
  Multiple ultrasonic measurement paths create a more complete representation of flow conditions, helping maintain accuracy across varying process conditions and flow profiles.
• Reliable Custody Transfer Performance
  International certifications and standards compliance support use in regulated gas measurement applications where accuracy and traceability are essential.
• Faster Response to Process Changes
  Simultaneous path transmission enables rapid detection of flow variations, improving responsiveness in dynamic operating environments.
• Reduced Downtime
  The Path Substitution Algorithm helps maintain measurement continuity if a measurement path becomes unavailable, minimizing operational interruptions.
• Lower Installation and Maintenance Costs
  Intrinsic safety design can simplify hazardous-area installations while reducing complexity associated with protection systems and field servicing.
• Advanced System Diagnostics
  Extensive diagnostic data helps operators identify fouling, blockage, flow disturbances, and other performance issues before they affect operations.
• Enhanced Verification with UIM 4F Duo
  The dual-meter architecture provides additional confidence through independent measurement comparison and deeper condition-monitoring capabilities.

Frequently Asked Questions

What gases can the TrueShot UIM 4F measure?

The meter is primarily designed for natural gas custody transfer and allocation applications, but it can also be used for other gas measurement applications depending on system requirements.

What makes a four-path ultrasonic meter advantageous?

Four independent measurement paths provide enhanced accuracy and improved compensation for changing flow profiles, resulting in dependable performance under varying operating conditions.

What is the difference between the UIM 4F and UIM 4F Duo?

The UIM 4F utilizes a four-path ultrasonic measurement system, while the UIM 4F Duo adds an independent three-path verification meter for additional diagnostics and condition monitoring.

Can maintenance be performed without shutting down the pipeline?

The available retraction tool allows transducers to be removed and replaced while the system remains under pressure, helping reduce downtime.

Does the meter provide diagnostic information?

Yes. The system supplies extensive diagnostic data, including flow profile information and health monitoring capabilities to assist with troubleshooting and maintenance planning.

Is the meter suitable for hazardous locations?

Yes. The meter is designed with full intrinsic safety, making it appropriate for installation in hazardous gas industry environments.