The on-site dynamic balance instrument and vibration analyzer ACEPOM325 can use the on-site dynamic balance technology to solve the problem of poor dynamic balance of the equipment rotor or shaft system in a very short time, thus greatly saving the costs of disassembly, transportation, installation and maintenance, and thus bringing significant economic benefits to the enterprise. The built-in dynamic balance system of ACEPOM325 can quickly judge the running state of the equipment on site and analyze whether the equipment has a bad dynamic balance fault. If it exists, the system can use the test weight method or influence coefficient method provided by the system to correct the dynamic balance, and the system will automatically calculate the mass size and angle of the added (subtracted) counterweight. In many cases, more than 90% of the unbalance of the rotor (shafting) can be removed with one dynamic balance correction.

ACEPOM325 dynamic balance software is a dynamic balance analysis and calculation software used in conjunction with ACEPOM325 two channel acquisition board, with on-site single and double side dynamic balance functions (measuring vibration time domain spectrum, amplitude spectrum, phase spectrum, giving balance quality and angle, and giving conclusions after balancing); Vibration measurement function (including time-domain analysis, frequency-domain analysis, shaft center trajectory analysis, and three-dimensional spectrum of speed); Rotor balance data database management function; Vector decomposition function.

Features:

1~16 channels are optional.

There is no need to guess the balance result, which saves a lot of operation time.

A variety of software can be installed as required to avoid unnecessary waste.

It can be made into an online multi-channel vibration monitoring system to display the operating conditions of the equipment in real time.

Vibration value display includes velocity, acceleration and displacement. The configured vibration sensor is very accurate, reliable and small enough to be placed in any narrow gap.

A vibration analyzer for all rotating equipment, including all kinds of equipment: fans, rolling bearings, gear boxes, steam turbines, engines, pumps, motors, etc.

Technical specifications:

Dynamic balance: single and double sided, 120~100000RPM

Vibration sensor: accelerometer or other optional sensors: eddy current sensor, etc

Sensitivity: 100mV/g

Input impedance: 50kOhms

Tachometer: PNP or NPN standard photoelectric

Input: TTL pulse

Measuring distance: 0.1~2.0m

Measuring range: 120~100000RPM

Precision: Max. ± 5RPM

Power supply: 4.2mA @ 24V DC

Display: LCD

Weight: 1250g

Protection grade: Ip54

Working environment: - 20 ℃~80 ℃

Functional software:

Vibration analysis fault diagnosis software:

Equipment management and system settings:

The powerful database structure is used to manage the equipment measuring point information, which can more effectively establish equipment archives, facilitate equipment management, and improve the efficiency of equipment monitoring; With perfect system settings, any sensor of acceleration, velocity and displacement can be selected, making the system suitable for various field applications.

Real time data acquisition and monitoring function:

Bar graph: the bar graph is used to visually display the vibration amplitude of each channel. When the bar graph is green, it indicates that the vibration is normal; when it is yellow, it indicates that the vibration value exceeds the alarm set value; when it is red, it indicates that the vibration value exceeds the trip set value;

Time domain analysis: it displays the time domain characteristics of vibration of each channel, including time domain waveform, probability density, autocorrelation analysis, cross-correlation analysis, various window functions (Hanning window, Haming window, triangular window, rectangular window, etc.), etc., and real-time displays a variety of dimensional parameters (peak value, average value, effective value) and a variety of dimensionless parameters; It is convenient for equipment operation state judgment and precise diagnosis;

Spectrum diagram: The frequency and amplitude of the harmonic components contained in the signal can be obtained by analyzing the frequency spectrum of the time domain waveform. With frequency Hz or frequency conversion multiple as the abscissa and amplitude as the ordinate, the spectrum can be obtained by plotting the analysis results on the graph;

The spectrum diagram is the most commonly used graph for fault analysis and diagnosis at present, from which important information about the frequency components of the signal can be obtained. The figure can also display the amplitude of the corresponding point at the specified waveform. Spectrum types include amplitude spectrum, power spectrum, phase spectrum, cepstrum analysis, etc. Six maximum spectral peaks and corresponding frequencies are displayed in real time, and various window functions are optional; Linear and logarithmic spectrum selection, used for analysis of common faults of various rotating machinery, such as imbalance, misalignment, shaft bending, and shaft crack;

Average spectrum analysis: In order to effectively filter out the on-site interference signals, the time-domain average spectrum and the frequency-domain average spectrum can be used to improve the signal-to-noise ratio.

Shaft center track diagram: corresponding to a certain speed, the position of the shaft in the support bearing is certain. As a result of vibration, the center of the shaft will move periodically around this center point, forming a dynamic motion track, that is, the shaft center track graph. This figure shows the situation after the horizontal and vertical vibrations at a bearing are combined. Different corresponding faults will show different shape of the shaft center track, so fault diagnosis can be carried out through the shaft center track;

Porter diagram: it shows the amplitude of vibration frequency multiplication during startup and shutdown of the unit and the change trend of amplitude and phase of vibration frequency multiplication with speed during startup and shutdown of the unit. Bode diagram is an important tool to determine the critical speed. If the amplitude curve has a wave crest, and the phase increases sharply, and the increase amplitude is greater than 70 °, then the corresponding speed may be the critical speed of the rotor where the measuring point is located or the adjacent rotor. The changes of amplitude and phase observed from the Bode diagram with the speed are helpful to analyze the axial position of the rotor unbalance mass, the order of the unbalanced vibration mode, whether there is structural resonance, and the dynamic and static friction during dynamic balancing.

Polar chart: also known as Nyquist chart, it shows the change of vector end of frequency multiplication vector with speed during unit startup and shutdown in vector mode. Its radial represents the magnitude of frequency multiplication amplitude, and the angle between radial and X-axis represents the phase of frequency multiplication. The speed, amplitude and phase corresponding to the specified waveform can be displayed at the bottom of the chart.

Amplitude: the speed curve appears in a ring shape in the polar diagram, and it is easy to get the mode parameters of each order from the diagram.

Three dimensional spectrum: it shows the change trend of various frequency components with speed at different speeds during startup and shutdown. It is a three-dimensional spectrum composed of frequency spectrums obtained at different speeds in turn, and it has the function of graph scaling. Through the three-dimensional spectrum, it can be seen whether there are abnormal frequencies (low-frequency and high-frequency components), whether there are fixed frequencies, as well as the speed, amplitude size and changes when they occur, from which we can understand the operating state of the unit and provide important information for the diagnosis of some faults. It is very intuitive to use cascade diagram to analyze faults with amplitude related to speed. The most typical faults of this kind are oil film whirl and oil film oscillation.

Relevant trend chart: it shows the change relationship among various signals (peak to peak value of vibration, first harmonic amplitude, phase, speed and time) in a certain period of time. The parameters of abscissa and ordinate are freely selected by users. When analyzing the changes of unit vibration with time (working conditions), speed and load, this curve is very intuitive and useful for operators to monitor the unit conditions.

Report printing function: The system provides a powerful report output function, which can directly output equipment information, waveform data, and status parameters to the WORD software, facilitating the management of equipment status.

Comprehensive mechanical equipment fault diagnosis function: according to the actual situation on site, different collection methods can be set to diagnose various rotor faults of the equipment (loose foundation, imbalance, misalignment, shaft bending, shaft crack, resonance, surge, oil film whirl, oil film oscillation, rotating stall, friction between rotor and stationary parts, insufficient interference of rotor interference fitting parts, dynamic instability of seal and clearance), Bearing failures (bearing wear, bearing pitting, bearing oil shortage), gearbox failures (gear wear, gear eccentricity, excessive gear pitch error) and other mechanical failures. It can also analyze the startup and shutdown of large units.

*Rotating machinery fault diagnosis expert system software:

The system software is a fault diagnosis software system developed on the basis of many years of field experience and theoretical research achievements of domestic and foreign diagnostic experts. The software can automatically diagnose the common faults of mechanical equipment, and propose solutions to the faults of equipment. Through this software, the status of the unit can be identified in time, the early signs of failure can be found, and the cause, severity, and development trend of the failure can be accurately judged, so as to eliminate the hidden trouble as early as possible, avoid the occurrence of accidents, improve the reliability of equipment, reduce maintenance costs, and enhance the comprehensive competitiveness of enterprises.

*Single and double sided field dynamic balancing software package:

Guided operation, only 3-5 steps are needed to complete on-site dynamic balancing

You can continue to perform dynamic balancing from the saved unfinished dynamic balancing process

Use the original installation conditions on site to start and stop the machine for 2-3 times;

Provide test weight balance method and influence coefficient method;

Vector decomposition and vector synthesis are convenient for installation of balance weight;

One time balance can reduce the unbalance by more than 90%;

Balance report generation and output;