The AT868W transmitter adopts the patented transit-time ultrasonic measurement algorithm optimized for gas media, solving the measurement difficulties caused by low sound velocity, turbulent flow and unstable gas composition in flare pipelines. The non-invasive external installation mode avoids pipeline cutting and process shutdown during construction, with no internal parts contacting the measured gas medium. There is no pressure loss or blockage inside the pipeline, which adapts to the pulsating, bidirectional and dirty working conditions common in petrochemical flare exhaust systems. The internal high-speed signal processor carries adaptive waveform correction logic to offset signal attenuation caused by pipeline rust, wall deposits and strong electromagnetic interference from on-site high-power equipment.

This transmitter supports single-channel gas flow acquisition and calculation, equipped with local display screen and physical keys for on-site parameter setting and real-time data viewing. It is configured with 4–20mA analog output, RS485 Modbus communication interface and built-in data logging function, which can upload instantaneous flow, cumulative flow and gas state parameters to the factory DCS and environmental supervision platform synchronously to meet the data traceability requirements of environmental protection departments. The shell complies with industrial explosion-proof and dust-proof specifications, applicable to hazardous areas of chemical plants and gas stations, and can run stably for a long time at ambient temperature of -20°C ~ 60°C under 95% non-condensing humidity. Standard DIN rail structure is convenient for centralized installation inside explosion-proof instrument cabinets.

Every finished AT868W-1-1-1-1 passes gas flow bench calibration, continuous powered aging test and insulation withstand voltage inspection before leaving the factory to ensure long-term stable metering precision. Circuit aging and signal abnormality of old transmitters will lead to flow data distortion, which may cause compliance risks of emission reports. Verified replacement products support plug-and-play replacement without large-scale modification of system configuration, effectively shortening maintenance outage time.

New transmitters are used for new flare system construction projects, while calibrated spare transmitters are applied to daily maintenance of in-service gas metering equipment. Accurate gas flow monitoring helps enterprises control flare waste emission, optimize combustion control parameters and reduce unnecessary energy loss. It cuts the long-term operation and maintenance cost of gas metering links, and provides reliable measurement guarantee for safe, standardized and environmentally friendly operation of industrial gas exhaust systems under long-term continuous production conditions.