Introduction to the fault detection method of the flow sensor

Troubleshooting Methods:

1. Electric Resistance Method

This method involves checking the electrical continuity and resistance of various components. Key steps include: a) verifying the continuity of the power and excitation fuses; b) checking the signal and excitation cables for continuity; c) testing the excitation coil's on/off state and its resistance value; d) measuring the insulation resistance between the excitation coil and ground; e) performing electrode symmetry measurements; f) checking the insulation resistance of the electrodes to ground; g) evaluating the resistance of the power transformer.

2. Current Method

This technique focuses on measuring the output current and the excitation current. It helps identify issues related to current flow and system performance.

3. Voltage Method

By assessing the working voltage, this method helps determine if the system is receiving the correct power supply and functioning properly.

4. Alternative Method

This includes replacing or swapping components such as converters to isolate and identify faults.

5. Analog Signal Method

An analog signal generator can be used to provide a simulated flow signal to test the performance of the flow sensor. This helps verify whether the sensor responds correctly under controlled conditions.

6. Waveform Method

This method involves observing key waveform signals at critical points in the circuit. Familiarity with normal waveforms allows technicians to detect anomalies and diagnose problems effectively.

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Tag: Flow Sensor

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