Description
Exact accuracy, pipe-size limits, transducer type (T5/T17), and option cards must be verified against the specific configuration and the current Panametrics datasheet before installation.
Product Introduction
Flare and vent lines demand a meter that stays accurate when gas composition swings and velocities swing from near-zero to over 100 m/s. The DigitalFlow XGF868i is the compact explosion-proof ultrasonic transmitter built for exactly that duty. It calculates instantaneous average molecular weight so mass flow remains usable even as the mixture changes.
The unit uses Correlation Transit-Time technology with no moving parts and no pressure drop. One- or two-path configurations give cross-flow immunity on larger pipes. Sites keep this model as a direct spare because the electronics, wiring, and configuration files already match the installed base. Always confirm the exact transducer type and software revision against the existing installation before the swap.
Key Selling Points & Differentiators
- Measures velocity, volumetric flow, and mass flow independent of gas composition; instantaneous molecular-weight calculation supports reliable mass and net-heating-value reporting.
- Extended velocity range reaches 120 m/s with 4000:1 turndown, covering both low-flow leak detection and high-flow emergency flare events.
- Direct difference versus thermal-mass or differential-pressure meters: no moving parts, no orifices to plug, and tolerance to dirty or wet gas.
- Not recommended for clean, constant-composition process gas where a simpler clamp-on or thermal meter would suffice and cost less.
- Every unit undergoes incoming visual and label inspection, power-up on a test bench, display and basic communication checks, and final ESD packaging with dated QC label. Test notes available on request.
- Field-proven installation methods and PanaView software support keep commissioning and diagnostics aligned with the rest of the DigitalFlow family.
Frequently Asked Questions
Can I drop this straight into an existing GF868 or XGF868 installation?
Physically the explosion-proof housing and many connections are compatible, but transducer type, path configuration, and software revision must match. Export the current site file and photograph the nameplate before removal.
Does the meter require a constant gas composition?
No. The Correlation Transit-Time method plus the molecular-weight calculation keeps mass-flow readings usable as composition varies—exactly why it is used on flare and vent streams.
What power and enclosure options are standard?
Maximum power draw is 20 W. Standard enclosure is epoxy-coated aluminum with explosion-proof / flameproof ratings; stainless-steel housing is optional. Confirm the exact hazardous-area certificate on the nameplate against the installation location.
How do you verify function before shipment?
Incoming inspection covers packaging, labels, and serials. The transmitter is powered, LCD and keypad response checked, and basic analog/digital outputs exercised where accessible. We state only that the unit passed these checks at the time of test.
