Coal slurry electromagnetic flowmeter| venturi meter

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1. Troubleshooting ideas for Cologne electromagnetic flowmeter

The troubleshooting ideas for Cologne electromagnetic flowmeter are as follows:

1. Debugging excitation frequency selection for electromagnetic flowmeter (IFC300) in response to fluctuations: Cologne electromagnetic flowmeter is single frequency adjustable, equal to the power frequency multiplied by the numerical value. The selected numerical values include

2、4/

3、2/

3、1/

2、1/

4、1/

6、1/

8、1/1

2、1/1

8、1/3

6、 1/50. The main function is to accelerate the sampling speed and reduce the fluctuations caused by high concentration slurry. Select line frequency in menu C1.1.13, which is usually set to 25Hz (1/2 power frequency) for measuring coal slurry. The selection method is to adjust the original set power frequency to observe changes in flow rate when there is flow. It cannot be used when there is a large change, and when there is a significant decrease but it is more stable, it should be stepped up and down by one gear. During the debugging and testing process, the C1.2.4 pulse fitter pulse filter and noise filter are turned off, while the C1.2.7 noise fitter is in the off state. Pulse filter selection: mainly suppresses the deviation and disturbance caused by pulses. The selection method is to select the original set power frequency for C1.1.13 line frequency when there is flow (when the flow indication is poor), turn on the C1.2.4 pulse fitter pulse filter, adjust the C1.2.5 pulse width and C1.2.6 pulse limit to achieve the most stable, and turn off the noise filter. For measuring coal slurry, the usual settings are: C1.2.5 pulse width 5-8S, C1.2.6 PULSE limitation pulse limit 0.02-0.

05m/s. Noise filter selection: mainly suppresses constant and fixed noise caused by low conductivity, high solid content, gases, bubbles, and uneven chemical media. The selection method is to select the original set power frequency for C1.1.13 line frequency when there is flow (when the flow indication is poor), turn off the C1.2.4 pulse fitter pulse filter, adjust the C1.2.8 Nose level noise level and C1.2.9 Noise suppression noise suppression to achieve the most stable flow. For measuring coal slurry, it is usually set to C1.2.8 Noise level of 0.02-0.05M/s and C1.2.9 Noise suppression of 2-4. Filter Time constant selection: The measurement sampling period is similar to A4.5, which is a moving window and is the sampling time of the converter to the sensor. It is usually set to 5-10 seconds. Analog output Time constant selection: used for setting the main current output, such as taking the average value when set to 5 seconds. For moving windows such as 0-5S and 0.01-5.01S, it is usually set to 1-3 seconds. Parameter setting is complete: Finally, all debugged filter parameters are turned on and set.

2. Judging the quality of the converter by the flow meter.

2. 3. Disconnect and touch the terminals with your hand.

2. 3. The indicator on the meter head will slide and the value will jump.

. Excitation terminals

8, 9, signal terminals

2, 3 short circuit indication is zero. If it is not zero, further analysis of the problem can be conducted. View the relevant alarm information in the header and conduct targeted problem analysis, judgment, and handling. The resistance between the wiring terminals when determining the quality of the sensor during air traffic control is

Coal slurry electromagnetic flowmeter

1. Troubleshooting ideas for Cologne electromagnetic flowmeter

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