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1. The electromagnetic flowmeter has a small bell flashing - whats going on?
The core reason for the "small bell" flashing of the electromagnetic flowmeter is an alarm or fault trigger, which may involve problems such as air traffic control, electrode abnormalities, or signal loss. 1. Fault type determination: If the "bell" is accompanied by codes such as "Empty Pipe" and "Err XX", it can directly correspond to air traffic control, parameter errors, or hardware failures; If there is no code, it is necessary to check the fluid status and electrode status.
Step 1 of the air traffic alarm processing process: Verify the pipeline status - check whether the valve is fully open and whether the pipeline is full of liquid, especially paying attention to the accumulation of gas caused by U-shaped pipe sections or high-level installation.
. Step 2: Adjust settings or structure - In the short term, you can enter the menu to turn off the air traffic control alarm function (long-term structural problems need to be fixed); Adjust the sensor to the horizontal pipe section or add an exhaust valve3. Methods to deal with electrode problems 3.1 Cleaning operation: After cutting off the power, disassemble the sensor and wipe the surface of the electrode with a soft cloth dipped in alcohol to remove oil, scale and other insulating substances
3.2 Damage determination: If the alarm still occurs after cleaning, use a multimeter to measure the electrode resistance. The normal value should be less than 50 Ω. If there is a circuit break or the resistance is too high, the electrode should be replaced
4. Signal abnormality investigation requires checking whether the wiring terminals are loose and whether the cab
2. Handling method for electromagnetic flowmeter with empty tube alarm
Handling method for electromagnetic flowmeter with empty tube alarm: When the electromagnetic flowmeter has an empty tube alarm, the following steps can be followed for troubleshooting and handling
1. Check whether the measuring fluid is filled in the measuring tube. Handling measures: First, confirm whether the measuring tube is filled with fluid.
. If the measuring tube is not filled with fluid, it will cause an empty tube alarm. At this point, it is necessary to check the fluid supply system to ensure that the fluid can flow steadily and continuously into the measuring tube. 2. Short circuit converter signal connection terminal processing measures: Use wires to connect the converter signal to terminals SIG, SIG2, and SIGGDN. If the "Empty Buried Kaiguan" prompt is cancelled at this time, it indicates that the converter itself is working normally. The problem may lie in the low conductivity of the fluid being tested, or incorrect settings of the empty tube threshold and range. Further operation: Check whether the conductivity of the measured fluid meets the requirements for the use of the electromagnetic flowmeter, and adjust the empty tube threshold and range settings. 3. Ch