Description
The Panametrics XGM868i (specifically designated via configuration string variants like XGM868I-1-21-FI-04164-0) is a compact, microprocessor-based ultrasonic gas flow transmitter. It utilizes patented Correlation Transit-Time™ technology to measure the flow rate of hydrocarbon gases, flare gas, vent gas, biogases, and industrial process streams across varied pipe sizes without creating pressure drops or requiring obstruction.
Procurement & Availability
- Condition: New Original / Factory Surplus / Certified Refurbished Options
- Availability: In stock or subject to custom configuration build-string verification
- Standard Lead Time: 2 to 5 business days for standard inventory items
- Warranty: 12 months from delivery date
- Commercial Note: Listed price is indicative, not final. Price subject to market conditions; contact us for a firm quote.
Technical Specifications
| Parameter | Value |
| Manufacturer | Panametrics (Baker Hughes) |
| Product Type | DigitalFlow Ultrasonic Gas Flow Transmitter |
| Measurement Technique | Ultrasonic Transit-Time (Correlation Transit-Time mode) |
| Velocity Range | −150 to +150 ft/s (−46 to +46 m/s) bidirectional |
| Accuracy | ±1% to 2% of reading depending on application, pipe size, and calibration |
| Repeatability | ±0.2% to ±0.5% of reading |
| Rangeability | 1500:1 overall turndown ratio |
| Compatible Pipe Sizes | 2 in to 120 in (50 mm to 3,000 mm) nominal diameter |
| Enclosure Rating | Epoxy-coated aluminum Type 4X / IP66; Explosion-proof / Flameproof options available |
| Analog Inputs / Outputs | Standard isolated 0/4 to 20 mA outputs; optional dual-channel inputs for temperature (RTD) and pressure compensation |
| Digital Communications | RS-232 standard; optional RS-485 and Modbus protocol support |
| Power Supply | 90 to 260 V AC standard (optional 12 to 28 V DC) |
| Operating Temperature | −40 to +60 °C (−40 to +140 °F) transmitter electronics |
| Certifications | CE, EMC Directive, hazardous area options (ATEX, IECEx, cCSAus Class I, Div 1) |
Engineering & Integration Notes
- Configuration Decoding: The model string structure incorporates options for channel count (single or dual-path), enclosure material, hazardous area classification approvals, power supply range, and wetted transducer connection styles. Verify the specific ordering code parameters against plant piping specifications before commissioning.
- Flow Profile Requirements: To achieve stated volumetric and mass flow accuracies, ensure a minimum straight pipe run of 20 diameters upstream and 10 diameters downstream, or utilize built-in flow profile correction programming parameters.
- Maintenance & Calibration: With no moving parts or flow obstructions, the meter is largely maintenance-free. Periodic diagnostic checks via the infrared local keypad or software interface confirm signal strength, transit-time ratio, and sound speed integrity.
Frequently Asked Questions
- Q: Can the XGM868i handle wet or dirty gas streams?
A: Yes. The advanced digital signal processing and Correlation Transit-Time™ technique allow the meter to track flow accurately even when minor liquid droplets, particulates, or condensates are present in the gas matrix.
- Q: How does the dual-channel option differ from the single-channel version?
A: A dual-channel configuration can monitor two separate pipes simultaneously or provide dual-path averaging along two crossing chords inside a single larger pipe layout to maximize measurement precision in disturbed flow profiles.
