Fine polishing the dust removal machine pressure detection position below

Fine polishing the precipitation station pressure detection surface grinding polishing machine to test the booster fan, the fan inlet side and outlet side of the static pressure test surface must be close to the fan, to ensure that the test surface between the fan and pressure loss can be calculated, so don't have to make the dust and gas pipe wall friction surface generated by friction pressure losses abroad increase the uncertainty of the test. Smooth pipe friction coefficients given by other information. Grinding and polishing of dust collector fan flow test grinding polishing dust collector machine in the selected point location at the center of the pitot tube placement pipeline, pressure hole on the airflow direction. Pitot tube position relative to the pipe wall must keep the length of the minimum displacement of 0. Within 5% tolerance. Pitot tube must be aligned to the pipe axis, tolerance within 5. Stress is by latex tube will show pitot tube connected to the pressure gauge. Fine polishing dust collector machine impeller anemometer wind speed, can be used to test tube on the market at present sell impeller anemometer minimum diameter is 16 mm and automatic recording. Detection to the axis of the anemometer wind wall distance of not less than three-quarters of the diameter of the watchcase round, for example, the diameter of the anemometer is 100 mm, and anemometer axis to the wind wall distance of not less than 75 mm. So, choose the maximum allowable size of anemometer is determined by the duct with the size and position. Before and after the test, the anemometer must be calibrated, the reading error must not exceed 3% of the average wind speed of two calibration. The two calibration obtained average used for calibrating the measured values. Calibration must be conducted using standard methods, but should as far as possible with the relevant calibration conditions fluid density and anemometer working characteristic curve of the related test conditions phase approximation.

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