Air compressors have the advantages of simple structure, easy operation, few wearing parts, convenient parts replacement, low noise and safe and reliable operation, so they are more and more widely used in enterprises. However, if the maintenance measures are incorrect or the operation is improper, it will lead to more equipment failures and reduced life, thus affecting the normal operation of the unit.
1. Fault judgment and analysis in the application of air compressor parts
During the measurement process, the transmitter often has some faults. Timely judgment, analysis and treatment of faults are crucial for the ongoing Fidelity air compressor parts. Based on the experience in daily maintenance, we have summarized some judgment and analysis methods and analysis processes.
1. Investigation method: Review the ignition, smoke, odor, power supply changes, lightning strikes, moisture, misoperation, and misrepair before the fault occurs.
2. Intuitive method: Observe the external damage of the circuit, the leakage of the pressure pipe, the overheating of the circuit, the power supply switch status, etc.
3. Air compressor accessories detection method:
1) Air compressor accessories open circuit detection: Separate the suspected faulty part from other parts to check whether the fault disappears. If it disappears, determine the fault location. Otherwise, you can proceed to the next step. For example, if the intelligent Fidelity air compressor accessories cannot communicate normally, you can disconnect the power supply from the meter body and use the method of adding another power supply on site to power on the transmitter for communication to see whether the cable is superimposed with an electromagnetic signal of about 2kHz and interfere with the communication.
2) Air compressor accessories short circuit detection: Under the condition of ensuring safety, short-circuit the relevant part of the circuit directly. For example, if the output value of the differential transmitter is too small, the pressure pipe can be disconnected, and the differential pressure signal can be directly led from the primary pressure valve to both sides of the Fidelity air compressor accessories. Observe the output of the transmitter to determine the connectivity of the blockage and leakage of the pressure pipe.
3) Air compressor accessories replacement detection: Replace the suspected faulty part to determine the fault location. For example, if the transmitter circuit board is suspected to be faulty, you can temporarily replace one to determine the cause.
4) Partial detection: Divide the measurement circuit into several parts, such as power supply, signal output, signal transmission, and signal detection. Check them in parts, from simple to complex, from the outside to the inside, narrow the scope, and find the fault location.
Supplementary content of air compressor accessories: Working principle of Fidelity air compressor accessories:
The differential pressure from the double-sided pressure pipe directly acts on the isolation diaphragms on both sides of the transmitter sensor, and is transmitted to the measuring element through the sealing liquid in the diaphragm. The measuring element converts the measured differential pressure signal into an electrical signal corresponding to it and transmits it to the converter, which is converted into a standard electrical signal output after amplification and other processing.
2. Several application measurement methods of air compressor accessories:
1. Combined with the throttling element, the differential pressure value generated before and after the throttling element is used to measure the liquid flow.
2. Use the pressure difference generated by the liquid's own gravity to measure the height of the liquid.
3. Directly measure the pressure difference of liquids in different pipelines and tanks.