Commtest Instruments vb Series User Manual

Section 3: Onsite Analysis - Measurement Menu
46
The only parameter you need to set is the frequency of interest - this
is typically the machine running speed.
• Press
to enter the RPM then to continue.
• Press
to begin measuring both channels.
The instrument will perform a spectral peak search at the entered
frequency (machine speed or any frequency of interest) on the
channel 1 signal. The frequency of the actual peak is displayed at
the top of the screen, always in RPM. The instrument then looks at
exactly the same frequency on channel 2 and displays the phase
difference Ø
2
- Ø
1
(CH2 - CH1). The instrument also displays the
amplitudes of both channels at that peak frequency.
• To change the target frequency (the peak of interest) use
or to adjust the value in 50 RPM increments.
Note: This measurement cannot be saved.
Setting your own parameters
Option
Custom Setup allows you to customize this menu to use
your own settings instead of the factory defaults. See Custom Setups
(page
57) for more information.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com

Commtest Instruments vb Series Specifications

General

Type	Vibration Analyzer
Storage Temperature	-20°C to 60°C
Channels	1 or 2
Data Storage	Internal memory and removable SD card
Display	Color LCD
Power	Rechargeable battery
Connectivity	USB
Battery Life	Up to 8 hours

Summary

Section 2: Basic Operation

Mounting Sensors

Provides instructions on correctly attaching accelerometers and other sensors for accurate measurements.

Tachometer Setup

Section 3: Onsite Analysis - Measurement Menu

Walk-through: Taking Measurements

A step-by-step guide on performing onsite measurements using the instrument's Measure Mode.

Fault Types and Phase Relationships

Section 4: Manual Setup Measurement Parameters

Setting Measurement Parameters

Guides users through manually configuring all parameters for taking measurements.

Setting Spectrum Parameters

Setting Waveform Parameters

Section 5: Recording Data

Walk-through: Taking Recordings

Section 6: Using Routes

Walk-through: Taking Recordings Using a Route

Section 8: Creating Machines

Section 9: Balancing Rotors

The Balancing Process

Outlines the sequential steps involved in performing a rotor balancing procedure.

Trial Readings (Single/Dual Plane)

Covers taking initial and trial weight readings to determine imbalance.

Balance Weight Calculations

Introduces tools for calculating appropriate balance weights.

Section 10: Balancing Walk-through

Trial Weight Reading

Details the process of attaching and measuring the effect of a trial weight.

Trim Balance

Covers performing final adjustments to achieve the desired balance level.

Section 12: Troubleshooting

Resetting the Instrument

Steps for resetting a non-responsive instrument.

Power Problems