Caldon 389Ci LEFM self-verifying gas flowmeter
Reliable custody transfer measurements for gaseous hydrocarbons
Applications
- Self verification
- Custody transfer
- Transmission measurement
- Import and export metering
- Gas storage
Benefits
- Based on our industry-leading 8-path chordal design for optimal linearity and repeatability, with dramatically reduced sensitivity to swirl and asymmetry effects
- 5-diameter minimum upstream pipe run and no requirement for flow conditioner, which reduces total cost of ownership
- Transducers that are isolated from the process and outside the pressure boundary for ease of service
- No recalibration or zeroing required if transducer is replaced
- In-house transducer manufacturing for maximum quality control
- Continuous logging capabilities
- Optional corrosion-, adhesion-, and contamination-resistant internal coating (proprietary)
Features
- Available sizes: 12 to 48 in (larger sizes available on request)
- Quantitative evaluation of meter performance, with a continuous and instantaneous output of uncertainty in velocity and flow rate
- Internal uncertainty totalizers that report uncertainty as a volumetric total
- Average error (linearized, relative to calibration facility): <±0.1% Qmin to Qmax
- Advanced signal processing with real-time diagnostic analysis
- Internal resistance temperature detector (RTD) for thermal expansion compensation
- Compliance with American Gas Association (AGA) Report No. 9, International Organization of Legal Metrology (OIML) Recommendation R 137 Accuracy Class 0.5, Measurement Instruments Directive (MID) Accuracy Class 1.0, and ISO 17089-1
- Independent technology qualification: DNV gas fiscal metering Class I-AAA measurement
How it improves performance
A breakthrough in the verification of ultrasonic gas meters, the Caldon™ 389Ci LEFM self-verifying gas flowmeter builds on the robustness and performance of our 8-path ultrasonic gas flowmeters to deliver a quantitative evaluation of meter performance. Based on the current process and meter conditions, it outputs the flow rate and quantifies the uncertainty in this flow rate every second.
