Orifice flow meter may cause measurement inaccuracy and maintenance requirements

Abstract: The orifice flow meter may cause measurement inaccuracy and maintenance and use requirements information are provided by excellent flow meter and flow meter manufacturers and quotation manufacturers. Orifice flowmeter may cause measurement inaccuracy and maintenance requirements Metered flow value. (2) Drift of range: eg. More flowmeter manufacturers select models and price quotations. You are welcome to inquire. The following is the details of the orifice flowmeter that may cause measurement inaccuracy and maintenance and use requirements. Orifice flowmeter may cause measurement inaccuracy and maintenance requirements Metered flow value. (2) Drift of the range: If the drift is greater than the set value, more flow value will be measured, and if the drift is less than the set value, less flow value will be measured. Therefore, the differential pressure transmitter is generally verified every 6 months, and usually should be observed to minimize the measurement inaccuracy caused by the drift of the differential pressure transmitter. 2. The drift of the pressure transmitter is the same as that of the differential pressure transmitter, but the influence of the drift of the pressure transmitter on the measurement results is not as large as that caused by the drift of the differential pressure transmitter, so the pressure transmitter is generally verified every year. Second-rate. 3. Blockage and leakage of the pressure pipe If the pressure pipe of the positive pressure chamber is blocked or leaked, the meter will not be able to measure the flow value or less. If the pressure pipe of the negative pressure chamber is blocked or leaked, it will cause the meter to measure the flow value and even damage the transmitter. Therefore, in addition to the verification once every 6 months, it is also necessary to carry out steam exhaust and sealing inspections on the pressure-inducing pipes, and find problems and eliminate them in time to reduce losses. 4. Blockage and leakage of valve If the valve of the positive pressure chamber is blocked or leaked, the meter will not be able to measure the flow value or less. If the valve of the negative pressure chamber is blocked or leaked, it will cause the meter to measure the flow value and even damage the transmitter. In addition, if the balance valve leaks, it will make the meter less or not meter the flow value. Therefore, in addition to the verification every 6 months, it is also necessary to conduct exhaust and sealing inspection of the valve, and repair or replace it in time to reduce losses. 5. Damage of flow totalizer and paperless recorder Generally, the stability of flow totalizer and paperless recorder is good, but in humid and high temperature environment, there may be some drift, so Flow totalizers and paperless recorders need to be calibrated on a regular basis every 6 years. 6. The signal line is short-circuited and grounded. If the connection signal line between the differential pressure transmitter, the pressure transmitter, the temperature sensor and the flow totalizer is short-circuited or grounded, it will cause the failure of the corresponding signal or the signal drift. Therefore, these signal wires need to be protected with wire sleeving. 7. Overpressure damage to the transmitter caused by freezing of the pressure pipe. Because the pressure pipe is condensed water, it is easy to freeze when the temperature is low, so that the instantaneous expansion of the volume of the water in the pressure pipe will reduce the pressure of the transmitter. The pressure sensing membrane is ruptured, causing damage to the instrument; although there is condensed water in the pressure induction pipe, the pressure induction pipe also needs to be insulated. 8. Finally, it is necessary to seal or lock all valves and instruments on the pressure-inducing pipe of the throttling device to prevent the artificial use of the orifice differential pressure flowmeter to steal steam. The above is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'Orifice flow meter may cause measurement inaccuracy and maintenance requirements'

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