Research Article
Fault Prediction of Centrifugal Pump Based on Improved KNN
Table 6
Specific parameters of each instrument and sensor.
| | Instrument name | Parameter | Value (unit) |
| | NI USB-signal data acquisition card | Analog input | 4-way, (kS/s), 16-bit resolution | | Analog output | 4-way, (kS/s), 16-bit resolution | | Voltage range | −10(V)∼+10 (V) | | Digital I/O interface | 4-way |
| | LDW-SIN-DW-Z electromagnetic fluidizer | MWP | 1.6 (MPa) | | Supply voltage | 220 (V) | | Measuring flow range | 0∼120 (m3/h) | | Error | 0.16 (%) | | Output current signal | 4-20 (mA) |
| | SGDN-dynamic torque measuring device | Output frequency | 5∼15 (kHz) | | Error | 0.3% | | Measuring flow range | 0-120 (Nm) |
| | WIKAS-transducer | Measuring range | Inlet 0∼1.6 (bar abs pressure)/outlet 1∼4 (bar) | | Current output | 4-20 (mA) | | Mains input | 10∼30 (V) | | Error | 0.2% |
|
|
