Extech VB450 User guide

Vibration Meter
Model VB450

USER GUIDE

EXTECH INSTRUMENTS

Introduction

Thank you for selecting the Extech Instruments Model VB450.

The VB450 is a portable vibration meter consisting of an
acceleration sensor and a digital measurement display circuit.
It can be used to measure vibration displacement, speed (or
intensity) and acceleration of mechanical equipment.
Equipment such as fans, pumps, compressors, motors, etc. can
be tested.

This device is shipped fully tested and calibrated and, with
proper use, will provide years of reliable service. Please visit
our website (www.extech.com) to check for the latest version
of this User Guide, Product Updates, Product Registration, and
Customer Support.

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EXTECH INSTRUMENTS

Safety Notes

Warning: Use extreme care when using this vibration meter to
test mechanical devices. Damage to meter and injury to
persons can occur if this meter is used in a manner not
specified in this User Guide or if nominal, preparatory safety
measures are not taken. Please refer to, and follow, the safety
directives below.

o Do not take measurements on devices where the range is

known to be, or expected to be, outside the specified
measurement range of this device.

o Do not use this instrument if its housing appears cracked,

chipped, or otherwise damaged.

o Do not use this instrument if the sensor or its cable appears

damaged or compromised in any way.

o Replace the battery as soon as the low battery symbol

appears on the meter display.

o Remove the battery if the device is to be stored for > 60

days.

o Never dispose of batteries in a fire. Batteries may explode

or leak.

o Do not attempt to charge the 9V battery. The supplied 9V

battery is not rechargeable. This meter was not designed to
use rechargeable batteries.

o If the meter operates abnormally, stop testing and have

the unit serviced before further use.

o Never use the meter in a wet environment or in an

atmosphere of combustible or explosive gas.

o Do not open the meter housing; there are no user-

serviceable parts. Contact Extech Instruments directly or
contact point-of-sale personnel for service inquiries.

o Protect the meter’s LCD from shock or vibration; allow only

the magnet and sensor to touch the devices under test.

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