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1. How is the internal structure layout of the SICK ultrasonic flowmeter?

The internal structure of the SICK ultrasonic flowmeter revolves around the ultrasonic detection core and is divided into three functional modules: signal acquisition, processing, and fluid channel. The layout is compact and optimized for industrial stability. 1. The internal structure of SICK ultrasonic flowmeter is divided into three core areas with relatively fixed positions: • The fluid measurement chamber and transducer module are located in the fluid flow area at the bottom/front of the equipment, which is the core detection unit Contains 2 (or more) sets of ultrasonic transducers, installed in pairs in flange mounting seats on both sides of the pipeline. Some pipeline models use Z-shaped, V-shaped, or W-shaped installation layouts to ensure that the ultrasonic beam can penetrate the measured fluid. two Internally, a fluid diversion and rectification structure will be installed to reduce the interference of turbulence on ultrasonic signals and improve measurement accuracy. The signal processing and control module is located in a closed cavity at the upper part of the device and is the computing core of the entire machine Equipped with a dedicated ultrasound signal transceiver chip, responsible for sending ultrasound pulses, receiving echo signals, and completing time/frequency difference calculations. two Integrated ARM embedded main control unit, responsible for data calibration, flow conversion, signal filtering, and external communication output. three Equipped with a small storage unit for storing calibration parameters and historical flow data. The power and communication interface module is located in the wiring area at the rear/side of the device: 1 Contains DC/AC power filtering circuits to provide stable power supply for the entire machine. two Reserved RS485

5, analog output, Ethernet and other industrial communication interfaces, some models integrate wireless communication modules for remote data transmission

2. Layout differences of different models • Pipeline integrated models: all modules are integrated into a metal shell, and the transducer is directly embedded in the inner wall of the pipeline, with a compact structure suitable for installation in small-diameter pipelines. External clamp type model: There is no internal fluid flow chamber, and the transducer is attached to the outer wall of the pipeline through a coupling agent. Only the signal processing and power modules are retained inside, and installation does not require shutdown. • Plug in model: The transducer adopts a detachable plug-in design with a sealed installation sleeve inside, which can quickly replace the transducer on a pressurized pipeline.

3. Precautions: Non professional maintenance personnel should not disassemble the internal structure of the equipment at will to avoid damaging the precision components of the ultrasonic transducer or electric shock. Models with high-voltage circuits inside the equipment should be repaired after a power outage of more than 10 minutes.

2. Should the ultrasonic flowmeter in the fire pump room be wired?

The handheld ultrasonic flowmeter used in the fire pump room does not need to be wired.

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