Yokogawa flowmeter | Yokogawa flowmeter has its positive and negative poles reversed

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1. How to cut off the small signal of Yokogawa ADMAG SE 204mm electromagnetic flowmeter

The small signal cut-off function of Yokogawa ADMAG SE 204mm electromagnetic flowmeter can be adjusted by entering the setting menu through the local button or communication interface. 1. Operation steps • Enter parameter setting mode: Enter the setting menu Senpai through the buttons of the flowmeter body or the HART/RS-485 communication interface (with the help of a handheld device or software), and find the "Flow Cutoff" or "Low Flow Cutoff" option. • Set cut-off value: The cut-off threshold can be expressed in flow units (such as m ³/h) or full scale percentage (%), and empirical values are recommended to be set at 0.5% -5% full scale (0.1% -1% for high-precision applications). For example, when the range is 100m ³/h, 0.5-5m ³/h can be set. • Select the cutting mode: zero mode (output 0 when the flow rate is below the threshold) or hold mode (this mode maintains the previous valid value, suitable for situations that require continuous recording). • Save and exit: After confirming the parameters, save and observe whether the display is stable.

2. Precautions - For media with low conductivity or containing bubbles, the cut-off value should be appropriately increased to avoid noise interference. -In batch processing or intermittent processes, it is necessary to ensure that the cutting and trimming values do not affect the flow records during the start stop phase. -After long-term use, electrode contamination or changes in operating conditions require recalibration of the cut-off value. -If the air traffic control detection function is supported, it can be linked with small signal cutoff to improve reliability.

2>2. Reversing the positive and negative poles of the Henghe flowmeter

Reversing the positive and negative poles of the Henghe flowmeter may result in no display, decreased accuracy, or instrument damage. It is necessary to immediately power off and reconnect the wires correctly.

. 1. Possible issues: Reversing the positive and negative poles can directly affect the signal collection and processing of the flowmeter. The following situations may occur: • No flow display or abnormal display: The instrument screen may have countless redundant data or incorrect or jumping values. • Decreased measurement and bandwidth accuracy: Signal transmission is interfered with, resulting in significant deviations between measured values and actual flow rates. • Damaged instrument: Long term reverse connection may cause internal components to withstand abnormal voltage, resulting in damage or shortened service life.

2. Solution: If reverse connection is found, the following measures should be taken quickly: • Power off immediately: Turn off the power to avoid further damage.

. Correctly connect the positive and negative poles: Refer to the instructions or equipment labeling to rewire and ensure polarity matching. Power on test: After re powering, check if the display and measurement have returned to normal. If the problem persists, it may be necessary to contact the manufacturer for maintenance.

3. Fault codes and solutions for Yokogawa electromagnetic flowmeter

The fault codes for Yokogawa Dianzhou Xiaoci flowmeter are divided into two categories: "with code alarm" and "no code abnormality", corresponding to different maintenance directions.

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1. Handling of simulated wheel tracks with code 1

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