HUATEC HG904 User Manual
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HUATEC HG904 User Manual

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USER'S MANUAL
HG904
A Portable Dual-Channel
Microprocessor-Based
On-site Balancer
Spectrum Analyzer
Vibration Data Collector
E-mail:export@huatecgroup.com
Fax: 8610 82916893
Tel : 8610 82921131
Address: Rm. 730, Chengyuan Building, the Mid. Road of Jiancaicheng
Haidian Dist. BeiJing, CHINA
www.huatecgroup.com

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  • Page 1 USER’S MANUAL HG904 A Portable Dual-Channel Microprocessor-Based On-site Balancer Spectrum Analyzer Vibration Data Collector E-mail:export@huatecgroup.com Fax: 8610 82916893 Tel : 8610 82921131 Address: Rm. 730, Chengyuan Building, the Mid. Road of Jiancaicheng Haidian Dist. BeiJing, CHINA www.huatecgroup.com...
  • Page 2 The only difference between HG904 and HG907 is that HG904 can be used together with Machinery Condition Monitoring software (WaveSoft) .In the following contents of this manual we use the word ―HG904‖ in most case for both of HG904A and HG907 The information contained in this document is proprietary.

  • Page 3: Table Of Contents

    HUATEC Group Corporation www.huatecgroup.com CONTENTS CHAPTER 1 GENERAL ……………………………………………………………………… 3 CHAPTER 2 BALANCE PRINCIPLES……………………………………………………… 4 CHAPTER 3 BALANCING PREPARATION ……………………………………………..7 CHAPTER 4 BALANCING OPERATIONS………………………………………………… 8 1-plane balancing…………………………………………………………………………… 8 without influence coefficients…………………………………………………………. 8 with influence coefficients……………………………………………………………..13 2-planes balancing………………………………………………………………………… 15 without influence coefficients………………………………………………………….15...

  • Page 4: Chapter 1 General

    Temperature range: from 5C to 50C Relative humidity: < 85%, unsaturated Without caustic gases Without strong electric-magnetic field & strong impact Safety The HG904 are not permitted to contact with running part of machine. Specifications P a ge 3 o f 3 7...

  • Page 5: Chapter 2 Balance Principles

    2.2 Principle of 1-Plane Balancing HG904’s 1-plane balance adopts the method of influence coefficient, which is also called balance method of 1-plane phase measuring. Just as its name implies, it’s desirous to do the measurement with the phase of rotation-speed vibration when measuring the vibration amplitude of rotor.
  • Page 6 2-planes dynamic balance. When doing 2-planes dynamic balance, two planes of adding mass and two points of vibration measure are needed. HG904’s 2-planes dynamic balance also adopts the method of influence coefficient. But the difference from 1-plane dynamic balance is that the vibration of two measurement points should be measured when adding trial-mass to one of the planes.
  • Page 7 HUATEC Group Corporation www.huatecgroup.com 1- Plane balancing P a ge 6 o f 3 7...
  • Page 8 HUATEC Group Corporation www.huatecgroup.com 2-Plane balancing P a ge 7 o f 3 7...

  • Page 9: Chapter 3 Balancing Preparation

    Photoelectric sensor can give HG904 1 electric pulse per turn of the running rotor. Not only the rotate speed can be measured but also the vibration signals can be compared with pulse signals.

  • Page 10: Chapter 4 Balancing Operations

    Line 1 on the left: Change rotor number. The note displays ―Which Rotor to Balance‖(It means which rotor you will choose to Balance,HG904/HG907 contains 200 arrays ,each arrays describe kinds of data during the balancing ). You can ...
  • Page 11 HUATEC Group Corporation www.huatecgroup.com NO(indicating that the influence coefficients are known or unkown), Here please choose NO. The displayed is the selected. Line 6 on the right: Input sensitivity of sensor A. The note displays ―Input Sensitivity of Sensor A”.The sensitivity can be usually obtained from the sensor certificate.
  • Page 12 And Amplitude&Phase is shown in the 2 line .When the rotation speed becomes stable, press ENTER for a moment, the HG904 begins measuring vibration. The data in the 3 line (rotation speed) and in the 5 line (the left is amplitude while right is phase) will update continually.
  • Page 13 And Amplitude&Phase is shown in the 5 line .When the rotation speed becomes stable, press ENTER for a moment, the HG904 begins measuring vibration. The data in the 6 line (rotation speed) and in the 8 line (the left is amplitude while right is phase) will update continually.
  • Page 14 Line 4 on the right: The note displays‖ Enter to Calculate‖. Press 【 ENTER】 then HG904 calculates. The weights of the balancing masses to fix on the selected angles are shown on the right side of the 2 and 3 lines.

  • Page 15: With Influence Coefficients

    And Amplitude&Phase is shown in the 2 line .When the rotation speed becomes stable, press ENTER for a moment, the HG904 begins measuring vibration. The data in the 3 line (rotation speed) and in the 5 line (the left is amplitude while right is phase) will update continually.
  • Page 16 HUATEC Group Corporation www.huatecgroup.com Step 2:Initial measurement: The operation of lines is the same as 1-plane balancing without influence coefficients. Step 3: input influence coefficients The operation of lines except line 3 is the same as 1-plane balancing without influence coefficients.

  • Page 17: 2-Planes Balancing

    HUATEC Group Corporation www.huatecgroup.com The operation of lines is the same as 1-plane balancing without influence coefficients. Step 6: verification The operation of lines is the same as 1-plane balancing without influence coefficients. 4.2 2-PLANES BALANCING Illustration of accelerometer location and cable connection 4.2.1:WITHOUT INFLUENCE COEFFICIENTS:...
  • Page 18 And Amplitude&Phase is shown in the 2 line .When the rotation speed becomes stable, press ENTER for a moment, the HG904 begins measuring vibration. The data line (rotation speed) ，in the 5 in the 3 line and in the 6 line (the left is amplitude while right is phase) will update continually.
  • Page 19 And Amplitude&Phase is shown in the 5 line .When the rotation speed becomes stable, press ENTER for a moment, the HG904 begins measuring vibration. The data line (rotation speed) ， in the 8 in the 6...
  • Page 20 And Amplitude&Phase is shown in the 5 line .When the rotation speed becomes stable, press ENTER for a moment, the HG904 begins measuring vibration. The data line (rotation speed) ， in the 8 in the 6...
  • Page 21 HUATEC Group Corporation www.huatecgroup.com Line 8 on the left: The note displays‖ Enter Menu Key ‖. Press〖 MENU 〗 to right. Line 2 on the right: The note displays‖ Enter to Calculate‖,all the places showing values are vacant. If you hope to see some measurement, move the cursor to there, and then the value is displayed.

  • Page 22: With Influence Coefficients

    HUATEC Group Corporation www.huatecgroup.com 【 ENTER】 then HG904 calculates. The weights of the balancing masses to fix on ， 3 ，4 the selected angles are shown on the right side of the 2 and 5 lines. Assure that the sums of the two angles depart from the balancing mass should be less than 180 degree.
  • Page 23 HUATEC Group Corporation www.huatecgroup.com The operation of lines is the same as 2-plane balancing without influence coefficients. Step 2:Initial measurement: The operation of lines is the same as 2-plane balancing without influence coefficients. Step 3: Input influence coefficients The operation of lines is the same as 1-plane balancing with influence coefficients.

  • Page 24: Chapter 5 Vibration Analyzer / Data Collector

    2. If the HG904 has not been used for a long time, it should be charged firstly and its memory should be formatted. The user may format the memory according to the...
  • Page 25 HUATEC Group Corporation www.huatecgroup.com screen of Setting parameter. The HG904 should be shut off when being charged. It costs about 8 hours from empty power to full. (1) Data collector Only HG904 can be used as data collector. After pressing On, the screen appears: Notice: 1.
  • Page 26 HUATEC Group Corporation www.huatecgroup.com memory is formatted, the names of measuring points is P0##……. Each name of measuring point is made up of 16 digits. You may use computer software WaveSoft to set the measuring point name. You may manually move the cursor to name of measuring point with  or  and use 〖...
  • Page 27 Different accelerometer has different sensitivities. Before using HG904, the user must affirm that the value of the sensor sensitivity in HG904 is the same as that the sensor manufactures presented. Press  or  to move cursor to the place behind ―SENCE”...
  • Page 28 (1.6) Measurement Firstly, fix the accelerometer to measurement location and connect the cable well. After power on the HG904; confirm that all parameters are properly set. Then press 〖 On/Off〗 ， press 〖 Collector〗 ,confirm the parameters in the collector page,then press [In] to measure. Now the alarm line in the fifth line is changed to ―Wait ……‖.
  • Page 29 HUATEC Group Corporation www.huatecgroup.com (2) Data Collect Spectrum You will see the amplitude FFT spectrum of channel A, the real line. Use  or  to read the frequency and amplitude of spectrum. The user may look at the spectrum details by first move cursor to a specific frequency and then press ―ZOOM‖...
  • Page 30 Now input the value by the number keys. Then press Enter or 【 ↓ 】 to confirm. The user may also save vague observations of machinery condition in the last line. The HG904 has ten vague observation code options: 0: Ok 1: Not In Use...
  • Page 31 HUATEC Group Corporation www.huatecgroup.com PARAM has four options: ACC ,VEL DIS and VOL. Select it by  or  key. When the input mode is SEN, Wave-Mode has four options, i.e., ACC (acceleration), VEL (velocity), DIS (distance) and ENVE (high frequency acceleration envelope).
  • Page 32 Press Enter again.All waveforms will be cleared and all parameters will be reset to the defaults. HG904 will name all points with natural sequence. The sensitivity of sensor and the alarm multiple factor will be reset to the default value (5.00 and 3.00).
  • Page 33 Notice: The range of amplifying multiple is from A to I. (5) Measurement of Vibration Waveform Connect the sensor cable to the socket of HG904, and fix the sensor to the object that will be measured. After power on, select a point name in the Collector menu.
  • Page 34 HUATEC Group Corporation www.huatecgroup.com This function is to display the waveform stored in HG904 so that the user can observe and analyze it like the wave measured. Press 〖 W.Recall〗 .Press  or  key, the user may change the stored waveform while press  or  to see the other part of the waveform (totally 10 screens for the whole waveform).
  • Page 35 Notice: valid only for dual channel measurement. (11) Rotation Speed Measurement HG904 measures rotation speed by using a photoelectric sensor to detect the light reflected from a piece of reflecting paper on the rotating axis. The measuring method is as the following: 1).
  • Page 36 The storage of data obtained by ―Collector‖ is automatic. After you have measured, HG904 will save the overall vibration value and 100-line spectrum at the moment you change to another point. Because the new data and the old data (reference value or alarming value) occupy the same space of memory, the old data will lose after you saved the new one.
  • Page 37 HUATEC Group Corporation www.huatecgroup.com APPENDIX BALANCE GRADE OF RIGID ROTORS (Abstracted from ISO 1940/1-1986 Requirement of balance grade of rigid rotors—machine vibration) Balance Examples of the rotor type grade (mm/s) G4000 4000 Rigidly fixed crooked-axis transmission set of low-RPM diesel engine, with odd amount...

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