Several solutions to common faults of Rosemount electromagnetic flow meters.
With the accelerated development of industrial modernization, the application of Rosemount electromagnetic flow meters in flow control and measurement in industrial production is becoming increasingly widespread. Of course, some minor faults are inevitable during the regular use of Rosemount electromagnetic flow meters. If these faults cannot be resolved promptly, they can lead to significant losses and risks in production. Below, let the technical editor from Shaanxi Huibo Electromechanical introduce several solutions for Rosemount electromagnetic flow meters.
Release time:
2022-02-24
Source:
With the accelerated development of industrial modernization, the application of Rosemount electromagnetic flowmeters in flow control and measurement in industrial production is becoming increasingly widespread. Of course, some minor faults are inevitable during the normal application of Rosemount electromagnetic flowmeters. If faults cannot be eliminated in a timely manner, it can cause significant losses and hazards to production. Below, let the technical editor from Shaanxi Huibo Electromechanical introduce several common solutions to the faults of Rosemount electromagnetic flowmeters.
1. Resistance Method
1. The continuity of the signal cable and excitation cable of the Rosemount electromagnetic flowmeter;
2. The continuity of the flowmeter power fuse and excitation fuse;
3. The resistance value of the flowmeter power transformer;
4. The continuity and resistance value of the excitation coil of the Rosemount electromagnetic flowmeter;
5. The insulation resistance of the electrode to ground;
6. Symmetry measurement of the electrodes;
7. The insulation resistance of the excitation coil of the Rosemount electromagnetic flowmeter to ground.
2. Substitution Method, such as swapping the converter and amplifier board of the flowmeter.
3. Current Method, measuring the output current and excitation current of the Rosemount electromagnetic flowmeter.
4. Waveform Method, testing the waveform at key points based on familiarity with the circuit.
5. Voltage Method, to determine the working power supply.
6. Analog Signal Method, using an analog signal generator to provide flow signals to test the sensor of the Rosemount electromagnetic flowmeter.
If the Rosemount electromagnetic flowmeter is found to be malfunctioning after being put into operation or after a period of normal operation, the first step is to check the external conditions of the flowmeter, such as whether the power supply is good, whether there are leaks in the pipeline or if it is in a non-full pipe state, whether there are bubbles in the pipeline, whether the signal cable is damaged, and whether the output signal of the converter (i.e., the input circuit of the downstream instrument) is open. Remember not to blindly disassemble and repair the flowmeter.
Key words:
Rosemount, Rosemount flow meter, Rosemount electromagnetic flow meter
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