GE Panametrics XGF868I-2-1-FI-H-4-4-S-PREPRO-RPT Ultrasonic Flowmeter

GE Panametrics XGF868I-2-1-FI-H-4-4-S-PREPRO-RPT
Explosion-proof ultrasonic flowmeter for flare gas (owned by Baker Hughes and formerly part of GE Pan American)

I. Model Segmentation and Selection Explanation
XGF868I: Basic Model
Explosion-proof time-difference ultrasonic flaring gas mass flowmeter, used for environmental protection metering of flaring gas from refineries and chemical plants. Explosion-proof certification Ex d IIC T6, protection class IP66/NEMA 4X.
2: Dual-channel (Dual-Channel) Measurement
Dual-path ultrasonic probes, resistant to pipeline deviation and turbulent interference, with a range ratio of up to 4000:1, higher measurement accuracy for both high and low flow rates, and supports bidirectional flow detection.
1: 1-channel 4-20mA analog quantity compensation input
Connect to on-site temperature and pressure transducer signals, automatically completing the conversion from working condition volume to standard condition volume, gas mass flow, and molecular weight compensation calculations.
FI: Foundation Fieldbus (FF) Fieldbus Communication
Supports remote parameter configuration of DCS systems, bidirectional data interaction for flow, equipment fault diagnosis, and adaptation to mainstream bus control systems in the chemical industry.
H: Power Supply Specifications
AC 100~240V 50/60Hz wide-range AC mains power supply, maximum power consumption of the entire machine is 20W.
The 1st 4: 4-channel isolated 4-20mA analog output
Configurable to output instantaneous flow rate, volume flow rate, mass flow rate, and average molecular weight of the gas for four process parameters.
The 2nd 4: 4-channel isolated pulse + relay alarm output
Used for uploading cumulative pulse of flow, high and low flow alarms, instrument faults, probe abnormalities, etc., for remote transmission of switch quantity signals.
S: Shell Configuration
Epoxy resin-coated cast aluminum explosion-proof housing, suitable for outdoor and corrosive industrial plant installations.
PREPRO: Factory Pre-programmed Configuration
The manufacturer completes parameter settings according to pipe diameter, gas composition, range, flow unit in advance, and the equipment can be put into use immediately after power-on, without the need for secondary configuration.
RPT: Accompanied by a Complete Factory Calibration and Test Report
Includes the entire machine accuracy verification, explosion-proof, communication, and I/O full-function detection certificates, meeting the requirements for environmental protection metering audit traceability.

Core Technical Parameters
1. Measurement Performance
Measurement Principle: Time-difference ultrasonic correlation transmission technology
Flow Rate Range: 0.03~120m/s, bidirectional measurement
Measurement Accuracy: High flow rate ±1.5% FS; Low flow rate ±3.5% FS
Range Ratio: 4000:1, stable measurement for extremely low flow rates
Can automatically calculate the average molecular weight of mixed gas, suitable for complex flaring gas media
2. Operating Conditions
Applicable Pipes: DN102~DN3048 (4~120 inches)
Working Pressure: 87.6kPa~10.3MPa
Environmental Temperature: -20℃~+55℃; Storage Temperature: -55℃~+75℃
Probe Temperature Resistance: -220℃~280℃, standard material titanium alloy, can select Hastelloy alloy for corrosion resistance
3. Electrical and Explosion-proof
Power Supply: AC100~240V
Explosion-proof Grade: Ex d IIC T6 Gb, ATEX, IECEx, FM, CSA multiple explosion-proof certifications, applicable to Zone 1 hazardous explosion areas
Protection Grade: IP66
Operation Panel: Backlit LCD liquid crystal display + magnetic non-contact keys, local parameter settings in explosion-proof area
4. Signal Interfaces
Analog Input: 1 isolated 4-20mA (temperature and pressure compensation)
Analog Output: 4 isolated 4-20mA
Switch Quantity Output: 4 pulse / relay isolated output
Digital Communication: Foundation Fieldbus FF bus, compatible with PanaView upper-level configuration software

Product Advantages and Application Scenarios
No moving parts, no pressure loss, no daily maintenance required, suitable for long-term stable operation of flaring gas with impurities and humidity conditions; Wide range ratio, capable of accurately monitoring both the small flow leakage of the device and the large flow discharge of the device;
Equipped with a gas molecular weight algorithm, no need for manual setting of gas components, suitable for complex mixed gases in refineries, coal chemical plants, LNG, and power plant flare systems for environmental emission measurement, process energy consumption calculation, and reporting of waste gas reduction.