GE XMT868I belongs to DigitalFlow XMT868 series industrial ultrasonic flow meter platform, the complete model XMT868I-1-11-0-0-0315-0 corresponds to exclusive factory configuration parameters: XMT868I stands for intrinsically safe insertion type flow host; the first digit 1 is standard DIN panel mounting housing structure; code 11 stands for dual 4–20mA analog output + RS485 digital communication configuration; the first 0 represents no additional relay alarm function; the second 0 means standard universal power supply module; 0315 is factory fixed calibration coefficient matched with designated pipe diameter and medium working condition; the final 0 refers to basic firmware version without customized functional development. The whole system is matched with MTS series insertion ultrasonic transducers to build a reliable inline flow detection system.

The device follows the time difference ultrasonic measurement principle. The paired insertion sensors launch and receive ultrasonic signals along the pipeline axial direction. The internal high-speed processor calculates fluid velocity based on the propagation time difference in forward and reverse directions, then converts the velocity value into instantaneous volumetric flow, mass flow and cumulative flow through built-in medium compensation algorithm. Compared with clamp-on products, insertion sensors are directly in contact with the medium, less affected by pipeline fouling, slight bubble and uneven flow field, with higher overall measurement stability and precision.

The transmitter main unit is designed with intrinsic safety circuit, meeting hazardous area explosion-proof standards for petrochemical, natural gas stations and flammable fluid delivery pipelines. The shell reaches IP65 protection grade, suitable for indoor instrument cabinets and outdoor sealed protection boxes. The front equipped LCD screen and operating buttons support local parameter configuration, real-time data display, running status diagnosis and fault code query, with password management to prevent unauthorized parameter modification.

Signal configuration includes dual isolated 4–20mA analog outputs for flow proportional signal transmission, and RS485 communication supporting Modbus protocol to upload flow data to DCS, PLC and SCADA systems for centralized remote monitoring. Built-in temperature and pressure compensation interface can access external process parameters to revise flow calculation accuracy under variable temperature and pressure working conditions of gas media. The internal multi-level filtering circuit effectively suppresses interference from on-site compressors, inverters and mechanical pipeline vibration.

The matched insertion probe adopts 316L stainless steel wetted parts, with good corrosion resistance for conventional industrial water, natural gas, flare gas and low-viscosity process liquids. The overall measurement pipe diameter coverage range is wide, and the 0315 calibration parameter is solidified according to the user’s actual on-site pipe size during factory calibration to ensure factory data matching performance. There are no mechanical moving parts inside the electronic host, so equipment failure rate is low in long-term operation. Daily maintenance only needs regular inspection of probe sealing condition and cable integrity, with low later operation and maintenance investment.

Each finished meter passes standard flow bench calibration before delivery, with NIST traceable calibration records to satisfy enterprise production data archiving and third-party inspection requirements. Widely applied in natural gas transmission pipelines, plant circulating water systems, chemical process fluid transportation and thermal energy metering management scenarios.