The electromagnetic flowmeter itself has this function, which can be manually debugged to adjust the flow rate and caliber size. The specific operation steps are as follows:
First, enter the password into the electromagnetic flowmeter to enter the menu, and find the column of caliber. For example, the caliber is DN50. At this time, if you want to increase the flow rate, change the caliber DN50 to DN65, and naturally its flow rate is larger than that of DN50.
Secondly, there is another way to adjust the flow rate. Enter the password to enter the menu and find the K coefficient column. For example, the K coefficient is 1.065. If you want to increase the flow rate, adjust the K coefficient value. The larger the value, the larger the K coefficient. bigger.
The above is how the electromagnetic flowmeter adjusts the flow rate. The size of the flow rate should not be moved by the staff. If the parameters inside the electromagnetic flowmeter are moved, the measurement will be inaccurate.
How to debug the electromagnetic flowmeter：
After purchasing the electromagnetic flowmeter, if debugging, the editor will summarize for you as follows:
Before the electromagnetic flowmeter is commissioned, the pipeline and flowmeter should be used for thorough inspection, including the cleaning of pipeline debris, and the oily medium pipeline does not need to be dried. The inspection before commissioning also includes the inspection of the electrical circuit. First, the connection of the circuit should be tested to ensure that the grounding is reliable before other circuit tests and inspections can be performed, so as to avoid the capacitive effect of the circuit, the storage of electricity, or the damage to the instrument caused by the measurement power supply. . In addition, insulation resistance and grounding resistance tests are also required.
Water commissioning: Whether it is an instrument for measuring aqueous medium suspension liquid or oily medium, the electromagnetic flowmeter should simulate the actual measurement medium temperature, pressure, flow rate and other conditions for water commissioning before formal commissioning. If an abnormality occurs during the water-passing test, or the parameters are missing, the instrument should be tested individually or sent to the production unit for verification.
System investigation and test: After the electromagnetic flowmeter has completed the single-function water-passing test, and the preparatory debugging of the control host is completed, the system debugging can be carried out. The oily medium pipeline needs to be dried before passing the measured medium for system operation. When debugging the system, the host should scan the code of each measuring point in advance to ensure that all instrument components are in normal working condition before functional debugging. During functional debugging, the host system reads the parameters of each instrument, and performs the threshold alarm test, etc., and then writes the control data, debugs one by one, and sends the relevant data to the relevant upper computer for analysis.
How to set parameters for electromagnetic flowmeter
Usually the parameters of the electromagnetic flowmeter need to be set, but many people do not know how to set the parameters of the electromagnetic flowmeter. Now I will briefly explain how the electromagnetic flowmeter sets the parameters. The general parameters are set within a certain range, and there are certain differences between different manufacturers. This is based on the product manual. The electromagnetic flowmeter sensor measures the fluid resistivity value in real time to make judgments. Whether the pipeline is in a full state, so its empty pipe measurement value is a continuous value, although it is different fluids have different resistivity values to determine whether the flowmeter pipeline is in a full state, so in the Empty pipe measurement is a continuous value. Although different fluids have different resistivity values, as long as the fluid is in a full tube state, its resistivity value is stable.
The electromagnetic flowmeter defines the resistivity value of the fluid in the full pipe state as 100%, that is, when the fluid is full, the empty pipe alarm threshold is used to calibrate the empty pipe measurement value to 100%. When the fluid level in the electromagnetic flowmeter pipeline is lower than the measuring electrode, when the electrode contacts the air, the relative resistivity of the flowmeter will increase. When it is higher than the empty pipe alarm threshold, the electromagnetic flowmeter will display the empty pipe alarm signal, which is calculated according to the actual usage. When the fluid is full, the empty pipe measurement value of the electromagnetic flowmeter can be calibrated to 100%, and when the fluid level in the pipe is completely lower than the electrode measuring the entire electromagnetic flowmeter, its empty pipe measurement value will be reach more than 1000%. Therefore, when the empty pipe alarm value of the electromagnetic flowmeter is set at about 900%, the status of the empty pipe can be calculated.