Electrical Performance & Core FunctionSupports wide-range AC input (100~240VAC), built-in multi-stage filter circuit to restrain surge voltage and grid clutter interference on industrial power supply lines. It outputs multiple groups of isolated regulated DC voltages required by each functional board, with overvoltage, overcurrent and short-circuit protection mechanisms to avoid secondary damage to the main control board when power abnormities occur. The PCB components pass high-low temperature aging screening, with stable output ripple coefficient, ensuring the ultrasonic transmitting & receiving signal circuit will not generate measurement deviation caused by power fluctuation.

Structural Design & Environmental AdaptabilityThe circuit board substrate is FR-4 material with overall conformal coating treatment, resisting damp, dust and weak corrosive gas erosion inside the instrument shell. Standard board size and golden finger plug-in structure match the internal card slot of XMT868 series explosion-proof flowmeter host completely. Applicable working ambient temperature ranges from -40℃ to +60℃, with excellent anti-vibration performance adapting to vibration environments of thermal power plants, petrochemical devices and pump stations, fully complying with industrial EMC electromagnetic compatibility standards.

Matched Components & Application ScenariosMatching host equipment: XMT868, XMT868I-1-11-0 (0-0315-0) explosion-proof ultrasonic liquid flow transmittersMatching internal modules: 703 series main control board, display panel board, analog output boardApplicable industries: petrochemical liquid metering, power plant circulating water monitoring, municipal water supply and sewage flow measurement system. Used as a mandatory replacement spare part when the original equipment fails to power on, repeatedly restarts or has unstable voltage output.

Stability & Maintenance AdvantagesIntegrated protection circuit effectively lowers the failure rate of rear-end core circuit boards; standardized plug-and-play installation greatly shortens on-site replacement and equipment recovery downtime. Original genuine power board matches the power load parameters of the whole machine, preventing burnout of expensive main control chips caused by mismatched generic power boards. Shockproof sealed packaging meets long-term spare parts warehousing requirements, and power supply output performance keeps stable under dry constant-temperature storage conditions.