To ensure that the sensor rod has sufficient contact with representative particle flow, the dust meter is installed in a region of the pipeline where particles are evenly distributed and flow in a straight line. The ideal location is in a vertical or horizontal section of the pipeline, at least downstream.Three times the pipe diameter, 5 times the pipe diameter upstream, and no bends, valves, throttles, or other obstructions.
In practical applications, compromise is often necessary to accommodate the majority of the above conditions.The S300 series must be installed on metallic pipes to provide electrostatic shielding and a reference ground. For non-metallic pipes, a metal mesh five times the length of the diameter should be applied. Sensors should be shielded from direct sunlight or environmental temperatures exceeding 50°C. They should be positioned at the vertical center of the pipe and perpendicular to the particle flow direction. For instance, in a square flue, the sensor should be installed centrally on one side. In any case, the sensor rod should extend at least one-third of the pipe's diameter. The length of the sensor varies from one-third to two-thirds of the flue diameter, depending on the flue concentration; lower concentrations require longer probes.
When monitoring a dust collection system, a good installation location is upstream of the blower.(At this point, a vacuum system is formed.) When a monitor is used in an electrostatic precipitator (ESP) system, it must be installed at least 20 meters away from the ESP system. Although the sensors (length < 1 meter) are shockproof, strong vibrations should still be avoided. Twisted-pair cables are recommended for large-sized pipes.
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