Name: Commtest Instruments vbBalancer
Brand: Commtest Instruments
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Section 5: Balancing Walk-through

• Attach or remove the recommended correction weight as

indicated by the instrument then proceed to Trim Balance.

For dual plane balancing two sets of values will display.

Step 5. Perform Trim Balancing

• Replace safety covers, start the machine again and let the

rotor settle to its normal operating speed.

• Press to take a trim reading. After a few seconds the

instrument displays the vibration level with the imbalance

corrected.

Table of Contents3
Section 1: Introduction9
Standard Features9
Standard Kit Items10
Instrument Capabilities11
Precautions13
Hazardous Locations15
Instrument Connections17
Front Panel Buttons18
LED Indicators19
Charging the Battery Pack20
Battery Features20
Removing the Battery Pack21
Operating Overview22
- Balancing22
- Onsite Analysis23
Section 2: Instrument Basics24
Powering On/Off24
Navigating Menus25
Returning to a Previous Menu25
Using Navigation Keys and Icons26
Selecting an Option from a List27
Canceling an Option29
Displaying Hint Labels and Detailed Help29
Displaying Alternative Options30
Entering Alphanumeric Characters31
Entering Punctuation, Spaces and Special Characters33
Using Other Icons34
Section 3: Using Sensors36
Supported Sensor Types36
Connecting Sensors to the Instrument37
Mounting Sensors38
Setting up the Accelerometer39
- Permanent Mounting40
Setting up the Tachometer40
Tachometer Signal from a Keyphasor42
Section 4: Balancing Rotors43
Methods for Balancing Rotors43
The Balancing Process44
Tips for Balancing45
The Tachometer45
Suggested Trial Weight Mass and Location46
Manually Entering Balancing Information46
Setting up a Balancing Job47
- Balance Planes and Weight Positions48
  - Balance Planes48
  - Weight Position (Reference Mark)48
- Sensors49
  - CH Position50
- Averages52
- Machine Information52
  - Rotor Weight, Diameter and Speed52
  - Reference Mark52
- Weight Orientation53
- Tach Trigger53
- Weight Lin Dist53
- Store Units54
Combining Trim Weights54
Reviewing Previous Balancing Jobs55
Section 5: Balancing Walk-Through57
Step 1. Set up a New Balance Job57
Step 2. Take an Initial Reading58
Step 3. Take a Trial Reading59
Step 4. Balance the Rotor62
Step 5. Perform Trim Balancing63
Step 6. Viewing and Saving Balancing Jobs65
Section 6: Analyzing Measurements Onsite66
Tips for Taking Measurements66
Walk-Through: Taking Measurements67
Working with Charts70
Analyzing Measurements70
- Using Cursors71
- Zooming73
Viewing Multiple Charts74
Changing Chart View74
Setting the y Axis (Amplitude) Scale75
Amplitude Display Units76
Setting the RPM77
Viewing Orders78
Viewing Revolutions79
Saving Measurements79
Section 7: Setting Measurement Options81
Setting Measurement Units and Spectrum Scaling81
Setting Measurement Parameters83
Creating Your Own Parameter Sets84
Assigning Sensors to Channels85
Explaining Spectrum Parameters86
- Fmax86
- Spectral Lines87
- Fmin87
- Tach Trigger88
- Averaging88
  - Average Overlap88
Explaining Waveform Parameters88
- Equivalent Fmax88
- Number of Samples88
- Duration89
Section 8: Measurement Types and Their Uses90
Spectrum90
Waveform91
Tachometer Display91
Bump Test92
Coast-Down/Run up93
Taking Multi-Channel Simultaneous Measurements94
- Setting up Sensors and Channels94
- Saving Multi-Channel Measurements95
Section 9: Taking Recordings97
Walk-Through: Taking Recordings97
Taking Individual and Multiple Recordings98
Saving Recordings99
Reviewing Recordings99
Deleting Recordings101
Attaching Notes101
Section 10: Creating, Editing and Deleting Items102
Storage Capacity and Recording Volume102
How Are Recordings Organized and Stored102
Working with Folders104
- Creating a Folder104
- Renaming a Folder104
- Deleting a Folder104
- Restoring a Deleted or Over-Written Folder104
Working with Machines105
- Creating Machine Structures105
- Creating Parameter Sets106
- Adding Structures to Existing Machines107
- Copying Machine Structures108
- Renaming Machine Structures108
- Deleting Machine Structures109
Working with Sensors109
- Defining and Editing Sensors109
- Using the Bias Voltage Check111
- Deleting Sensors112
Working with Notes113
- Creating Notes113
- Editing Notes113
- Attaching Notes113
- Viewing Notes114
- Removing Notes114
- Deleting a Note Permanently114
Deleting All Recordings in a Folder115
Deleting All Stored Information115
Section 11: Utilities116
Setting the Date and Time116
- Adjusting the Date Format116
Selecting Your Local Timezone117
Adjusting Sound Volume117
Set the Instrument Language117
Printing Directly to a Network Printer118
Adjusting Screen Contrast119
Turning the Backlight On/Off119
Recharging the Instrument120
Estimating Remaining Operating Time120
Conserving Battery Power120
- Setting Backlight Timeout121
- Setting Sleep Mode Timeout121
- Setting Complete Powerdown Timeout122
Checking How Much Memory Is Available122
Freeing Instrument Memory122
Backing up the Instrument Database123
Upgrading Instrument Firmware (Proflashing)124
Section 12: Troubleshooting126
Contacting Technical Support126
Resetting an Unresponsive Instrument126
Network Communications Problems126
Ethernet Connection Lost in Windows Vista128
Appendix: Specifications130
Vbbalancer130
Vbbalancer132
Index134

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Commtest Instruments vbBalancer Specifications

General

Brand	Commtest Instruments
Model	vbBalancer
Category	Measuring Instruments
Language	English

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