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MLV-8 fan vibration sensors are mainly installed on the bearing caps of various rotating machinery (such as steam turbines, compressors, fans and pumps). It is an electromagnetic sensor that cuts magnetic lines by a moving coil and outputs a voltage. Therefore, it does not require power supply during operation and is easy to install.
1. Measuring range: Frequency: 10 ~ 300Hz
Amplitude: 0 to 200um 0 to 500um 0 to 800um (peak to peak)
Intensity: 0 ~ 20mm / s 0 ~ 25mm / s 0 ~ 50mm / s (true RMS)
2. Measurement accuracy: ±0.5, linear error ≤1%FS
3. Measurement method: vertical or horizontal
4. Output signal: current output: 4 ~ 20mA (load ≤ 1KΩ)
5. Ambient temperature: -10 ~ 65 ° C (relative humidity ≤ 85%)
6. Power supply voltage: DC24V (power consumption ≤ 3W)
7. Dimensions: 35 × 75 (mm)
8. Fixed screw hole: M10×1.5×10mm
ST-2G vibration sensor sensitivity 20-50mv/mms
Second, the basic principles
The basic principle of the CD-21 series speed sensor is based on an inertial mass (coil assembly) and a housing in which a magnet is fixed. When the inertial mass is suspended from the housing by the elastic element, the sensor housing is fixed to the vibrating body. Above, this
Vibration speed sensors are typically used to measure bearing vibration and, in rare cases, to measure shaft vibration. When measuring the vibration speed, if the sensor is installed incorrectly or the installation is not strong, the measurement result may be distorted or the sensor may be damaged due to vibration. Therefore, we must carefully choose the installation method of the vibration speed sensor.
When the sensor is used to measure the vibration of the rotating shaft, the installation is usually carried out in the form of hand-holding, plasticine sticky water magnetic chuck fixing, bolt fixing and the like. In the temporary vibration measurement, most of them adopt the method of holding the sensor. This method is flexible and easy to use, especially when the number of vibration speed sensors is lacking and the sensor interchangeability is not good. The disadvantage is that the test is The error is relatively large and the work intensity is also large.
MLV-8 fan vibration sensor
Installation position: Installed vertically or horizontally on the vibration point to be tested, and the M8×1.25 screw magnetic base on the bottom of the transmitter is attached to the tested housing, and then the sensor is screwed on and tightened.
3.1 Installation Dimensions and Specifications: Refer to Figure 3 (Installation and Protection of Speed ​​Sensor). If the sensor installation position is washed by high temperature steam, etc., in order to reduce the ambient temperature of the sensor and provide protective measures, under normal circumstances, no protection is required.
3.2 Use and insulation requirements. The sensor output is floating ground, on the plug and socket of the connected sensor, and is marked with numbers 1, 2, 3, and 4. Considering that the wiring is firm and reliable, “1, 2†and “3, 4†are shorted and used separately. “1, 2†is used as the A end of the sensor signal output, and “3, 4†is used as the B end. When connecting with other devices, the A and B terminals can be interchanged without distinction. The connecting wires are required to have good insulation performance. A two-core shielded cable is used, and one end of the shielding layer of the cable is floating and the other end is grounded. Sensor installation The factory is equipped with M10 fixing screws. For the protection measures for sensor installation, the factory is equipped with a protective cover supply, and the rest is handled by the user according to local conditions.
1. Measuring range: Frequency: 10 ~ 300Hz
Amplitude: 0 to 200um 0 to 500um 0 to 800um (peak to peak)
Intensity: 0 ~ 20mm / s 0 ~ 25mm / s 0 ~ 50mm / s (true RMS)
2. Measurement accuracy: ±0.5, linear error ≤1%FS
3. Measurement method: vertical or horizontal
4. Output signal: current output: 4 ~ 20mA (load ≤ 1KΩ)
5. Ambient temperature: -10 ~ 65 ° C (relative humidity ≤ 85%)
6. Power supply voltage: DC24V (power consumption ≤ 3W)
7. Dimensions: 35 × 75 (mm)
8. Fixed screw hole: M10×1.5×10mm
ST-2G vibration sensor sensitivity 20-50mv/mms
Second, the basic principles
The basic principle of the CD-21 series speed sensor is based on an inertial mass (coil assembly) and a housing in which a magnet is fixed. When the inertial mass is suspended from the housing by the elastic element, the sensor housing is fixed to the vibrating body. Above, this
Vibration speed sensors are typically used to measure bearing vibration and, in rare cases, to measure shaft vibration. When measuring the vibration speed, if the sensor is installed incorrectly or the installation is not strong, the measurement result may be distorted or the sensor may be damaged due to vibration. Therefore, we must carefully choose the installation method of the vibration speed sensor.
When the sensor is used to measure the vibration of the rotating shaft, the installation is usually carried out in the form of hand-holding, plasticine sticky water magnetic chuck fixing, bolt fixing and the like. In the temporary vibration measurement, most of them adopt the method of holding the sensor. This method is flexible and easy to use, especially when the number of vibration speed sensors is lacking and the sensor interchangeability is not good. The disadvantage is that the test is The error is relatively large and the work intensity is also large.
MLV-8 fan vibration sensor
Installation position: Installed vertically or horizontally on the vibration point to be tested, and the M8×1.25 screw magnetic base on the bottom of the transmitter is attached to the tested housing, and then the sensor is screwed on and tightened.
3.1 Installation Dimensions and Specifications: Refer to Figure 3 (Installation and Protection of Speed ​​Sensor). If the sensor installation position is washed by high temperature steam, etc., in order to reduce the ambient temperature of the sensor and provide protective measures, under normal circumstances, no protection is required.
3.2 Use and insulation requirements. The sensor output is floating ground, on the plug and socket of the connected sensor, and is marked with numbers 1, 2, 3, and 4. Considering that the wiring is firm and reliable, “1, 2†and “3, 4†are shorted and used separately. “1, 2†is used as the A end of the sensor signal output, and “3, 4†is used as the B end. When connecting with other devices, the A and B terminals can be interchanged without distinction. The connecting wires are required to have good insulation performance. A two-core shielded cable is used, and one end of the shielding layer of the cable is floating and the other end is grounded. Sensor installation The factory is equipped with M10 fixing screws. For the protection measures for sensor installation, the factory is equipped with a protective cover supply, and the rest is handled by the user according to local conditions.
Nantong Enpur Thermal Energy&Technology Co.,Ltd , https://www.enpurwool.com