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Pitot tube data collection

by:HoldPeak     2020-06-08

standard pitot tube is measured air flow to determine total and static pressure air velocity of pipe shaped device. Widely used in scientific research, production, teaching, environmental protection and clean rooms, mine ventilation, energy management measure wind speed, pipe furnaces flue gas velocity, thus the flow is calculated.

pitot features:

1, pitot tube measurement medium: a gas or liquid that is compatible with 304 stainless steel. 2, pitot use environment: - temperature 20~600℃; Humidity: & le; HR45%3, pitot precision grade: 1. Level 0, 2. Level 5, 5. 0 level 4, measuring velocity range: air velocity & le; 40m/s; Water velocity & le; 25 m/s5, line of standards: gb JJG518 - 986, pitot tube standard factor: l-type pitot tube in 0. 99-1. 01; The S type pitot tube in 0. 81-0. 86. 7, pitot tube instrument connections: production of pitot tube can connect all kinds of pressure gauges, If only wind speed air flow meter JX1000 - pressure 1 f, u-shaped pressure gauge, tilt micromanometer, inclined tube differential pressure gauge and digital pressure gauge, compensation micro pressure gauge, etc. ) And differential pressure transmitter, secondary instrument, and imports all kinds of pressure gauges. 8, PTL type standard pitot tube: pitot tube, pitot tube order 31006656 34973069. 9, pitot tube structure: Shanghai supply standard of l-type pitot tube is two different diameter tubes were concentric socket and become:, tube straight tail end joint is total pressure tube, outer tube side joint is static pressure tube. The S type pitot tube with two teams with diameter pipe welded together, in the face of the airflow is total pressure side, his back to the airflow is static pressure. And tag number marked in tapping coefficient and static pressure joint, when using can't wrong. Side pointing to the bar and the probe in the same direction, when using, can determine the direction, ensure the measuring head alignment to the flow direction.

pitot tube method of use: 1. To correctly choose measurement point section, to ensure the measuring point straight pipe in air flow smoothly. Therefore, measuring the cross section from the flow direction of the bend, variable diameter abnormity tube such as local components more than four times the pipe diameter. From the downstream direction of local bend, the structure of the variable diameter should be greater than 2 times the pipe diameter.

2。 When measuring the total pressure hole shall be on the airflow direction, to point to the pole. Measurement point insertion hole should avoid air leakage, and can prevent the airflow interference on the cross section. With pitot tube can only be measured on the pipeline section velocity of one point, because of the uneven distribution of cross section flow, so this section should be more measuring points, in order to calculate the average.

3。 Before using the smooth general characteristic test. Small static pressure hole check, don't make the impurities clogging pores after use clean the tube inside and outside, to ensure the good condition for a long time.

4。 Standard pitot verification period of five years pitot USES: mainly used for measuring fluid flow ( Liquid and gas) Flow field of a measuring point velocity, is the laboratory and industrial and mining enterprises measurement ventilation pipes, industrial piping, industrial furnaces flue flow, velocity of the ideal instrument. Using pitot tube speed and determine traffic, according to have reliable theory, its structure is simple, easy to use, is a kind of mature and reliable, widely used measurement methods.

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