Under what circumstances does a flowmeter need to have small signals removed?

2018-06-13View Original

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Under what circumstances does a flowmeter need to have small signals removed?

Reply #22018-06-13

For vortex flow meters, mass flow meters, and especially differential pressure throttling elements, the deviations are relatively large at low flow rates; therefore, small-signal rejection is necessary in all cases.

Reply #32018-06-13

For flowmeters with large small-signal errors, small-signal rejection is required, such as orifice plate flowmeters.

Reply #42018-06-13

It has been determined to be shut down; there is no leakage, yet the gauge shows a slight flow rate.

Reply #52018-06-14

The principle – what is the principle behind the CUT-OFF???

Reply #62018-06-14

The principle of small-signal rejection is shown in the images at https://bbs.hcbbs.com/forum.php?mod=image&aid=1389010&size=300x300&key=e693eae9ec9810b1&nocache=yes&type=fixnone and https://bbs.hcbbs.com/forum.php?mod=image&aid=1389011&size=300x300&key=2d02eef3df3f6431&nocache=yes&type=fixnone

Reply #72020-09-19

Differential pressure flowmeters require small signal rejection

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