What parameters need to be monitored for motors, fans, and pumps in a factory?

For large motors, axis displacement, vibration, and the temperature of the stator windings are generally checked. There are corresponding instruments for each. Current and voltage also need to be measured.

The monitoring of motors is generally determined based on their price and importance, in order to ensure the safety of the equipment and reduce maintenance costs. The monitoring of motors is generally carried out based on their power rating; ordinary motors rarely have any monitoring measures, while such measures are available for high-voltage, high-capacity motors. Temperature is the primary parameter that needs to be monitored, as it affects the insulation of the motor coils and the lifespan of the bearings; generally, the temperatures at the front and back ends of the bearings are used for monitoring. Large motors, especially high-voltage motors, require parameter monitoring of the shaft; shaft vibration and shaft displacement are the most critical parameters, and this is also implemented to ensure the safe operation of the motor. If the motor has a high load and capacity, oil cooling and water cooling measures are also required; the main parameters that need to be monitored are the inlet and outlet pressures and temperatures. These are roughly the only parameters relevant to the motor.

Current is more intuitive, followed by temperature and vibration

Thank you for the advice. What about fans and pumps?

Key points for inspecting fans and pumps: 1. Vibration, primarily bearing vibration, which can be measured using a handheld vibration meter. 2. Temperature, mainly the bearing temperature, can be measured using an infrared thermometer. 3. Oil level: Is the oil level in the bearing box above 2/3? 4. Leakage: Check for any leakage at the shaft seal and other areas. 5. Abnormal noises: Are there any unusual sounds when the fan or pump is in operation? For particularly important fans and pumps, online vibration and temperature monitoring systems are installed; on-site, attention is generally focused on the latter three aspects.

Motor: Current, temperature. Fan: Air pressure, flow rate. Pump: Pressure, flow rate

Electric motors generally require current measurement, usually the starting current and power. Larger motors: current, power, temperature, vibration, switch status ； Fan: shaft displacement, outlet pressure, inlet pressure. Pump: outlet pressure, inlet pressure

Are there any design firms that specialize in designing this?

Both process parameters and equipment parameters need to be monitored

1. Temperatures of the front and rear bearings (bushing) of the motor and pump； 2. Main pump current ； 3. Temperatures of the front and rear bearings (bushing) of the motor and pump, 4. Pump pressure (inlet and outlet) ； 5. Liquid level in the tank or pool feeding the pump ；