Extech Instruments VB500 Manual de usuario

User's Guide

4-Channel Vibration Datalogger

Model VB500

VB500-EU-EN-V1.2-10/11

Introduction

Congratulations on your purchase of the Extech VB500 Vibration Datalogger. The VB500 can

display four (4) channels of simultaneous vibration measurements taken from remote vibration

sensors. This meter displays and stores vibration readings of Acceleration, Velocity and

Displacement. Supported measurement units are meters/s

, ft/s

, g, mm/s, cm/s, in/s, mm and inch.

Logged data readings are stored on an SD card for transfer to a PC. This meter is shipped fully

tested and calibrated and, with proper use, will provide years of reliable service.

Meter Description

1. BNC adaptors

2. Vibration pickup input jacks

3. Side compartment (detailed below)

4. Sensors

5. Magnetic mount

6. SET and Clock key

7. MAX-MIN key

8. ENTER and LOG key

9. ▼/ Function key / Max. Reset / Zero

10. ▲/ ACC-VEL-DISP key

11. Power ON-OFF key

12. HOLD and Backlight key

13. Backlit LCD (Detailed below)

Note: The

battery compartment and tilt stand are located on the rear of the instrument

96 7 8

VB500-EU-EN-V1.2-10/11

Display Description

1. Battery status

2. HOLD mode icon

3. Record MIN MAX Mode active

4. MAX display

5. MIN display

6. Peak Hold mode

7. Data Hold mode

8. RMS measurement

9. Channel 1 reading

10. Channel 2 reading

11. Date and Time

12. Channel 3 reading

13. Channel 4 reading

14. Datalogging active

15. Units of measure and function icons detailed below:

ACC ‘Acceleration’ measurement mode

VEL ‘Velocity’ measurement mode

DISP ‘Displacement’ measurement mode

m/s

Meters per second squared

mm/s Millimeters per second

ft/s

Feet per second squared

gG-force

inch/s Inches per second

cm/s Centimeters per second

mm Millimeters

inch Inches

P-P Peak-to-Peak

Side Compartment Description

1. SD Memory Card slot

2. 9V Power Adaptor jack

3. RESET button

4. Audio output jack

1 2 3 4 5 6 7 8

AUDIO OUT

VB500-EU-EN-V1.2-10/11

Getting Started

Power ON-OFF

•Power the meter by pressing and holding the power button for 3 seconds.

•Press and hold the power button for at least 3 seconds to power OFF the meter.

•This meter is powered by eight (8) 1.5V ‘AA’ batteries or by AC adaptor. If the meter will not

switch ON please check that fresh batteries are installed in the rear battery compartment or, in

the case of the AC adaptor, check that the adaptor is connected correctly to the meter and to an

AC source.

Display Backlight

To turn the display backlight ON or OFF, press and hold the backlight button for 3 seconds. The

meter will beep when switching the backlight ON or OFF unless the beeper is disabled.

Vibration Sensor

•Connect a vibration pickup to the cable supplied. Make sure it is firmly attached.

•Connect the cable to the meter by attaching it to a connector at the top of the meter.

•If the surface to be tested is magnetic, attach the magnetic base to the vibration pickup and

attach the pickup to a flat surface.

•If the surface to be tested is not magnetic, hold the pickup against the surface. Do not hold the

cable while making measurements.

Units of Measure

The currently selected unit of measure is shown on the meter’s LCD. To change the unit of

measure, press and hold the ACC/VEL/DISP (up arrow) button until the desired unit of measure

appears and then release the button. The meter begins scrolling through the available units of

measure after the button has been depressed for 3 seconds. The saved units will become the

default power-on unit of measure.

UNIT DISPLAY INDICATOR

ACC m/s

VEL mm/s

cm/s

DISP p-p mm

ACC ft/s

VEL In/s

DISP p-p inch

VB500-EU-EN-V1.2-10/11

Function Selection

The currently selected function is shown on the meter’s LCD. To change the function, press and

hold the FUNCTION button until the desired function appears, then release the FUNCTION button.

The available functions are:

RMS: Typical selection for Acceleration and Velocity

PEAK: Displays the peak value of the vibration

MAX HOLD: Displays and holds the max value measured

MAX HOLD Reset

Press and hold the ▲and ▼buttons for 3 seconds to clear the Max. Hold reading.

Data Hold

To freeze a displayed reading on the LCD, momentarily press the HOLD button (the HOLD icon will

appear above the reading). To exit HOLD, press the HOLD button again.

ZERO Adjustment

The ZERO function is used to remove any small offset caused by temperature changes or other

environmental changes. The zero will only work for a display of 10 or less digits.

1. Connect the vibration sensor to the meter

2. Set the measurement function to Acceleration

3. Make sure the sensor is motionless and not subject to any vibrations

4. Select the desired channel by pressing and hold the up and down arrows buttons until the

beeper sounds and the CH1 icon flashes. Then use the SET button to scroll to the desired

channel.

5. Press and Hold the ▼and ▲buttons for 3 seconds and the meter will zero the selected

channel.

6. Use the SET button to step out of this mode.

Max-Min Reading Record

For a given measurement session, this meter can record the highest (MAX) and the lowest (MIN)

readings for later recall.

1. Press the MAX-MIN button momentarily to access this mode of operation (REC icon appears)

2. The meter is now recording the MAX and MIN readings.

3. Press the MAX-MIN button again to view the current MAX readings (MAX icon appears). The

readings on the display are now the highest readings encountered since the REC icon was

switched on (when the MAX-MIN button was first pressed).

4. Press the MAX-MIN button again to view the current MIN readings (MIN icon appears). The

readings on the display are now the lowest readings encountered since the REC icon was

switched on (when the MAX-MIN button was first pressed).

5. To exit the MAX-MIN mode, press and hold the MAX-MIN button for 3 seconds. The meter will

beep, the REC-MAX-MIN icons will switch off, the MAX-MIN memory will clear, and the meter

will return to the normal operating mode.

VB500-EU-EN-V1.2-10/11

Setup Mode

Basic settings at a glance

To view the current configuration of the meter with regard to time, date, and datalogging sampling

rate press the SET button momentarily. The meter will now display the configuration in quick

succession. If the information is missed on the first try, simply press the SET button again until all of

the information is noted.

Accessing the Setup mode

1. Press and hold the SET button for 3 seconds to access the Setup menu.

2. Press the SET button momentarily to step through the available parameters. The parameter

type is shown on the bottom of the LCD and the current selection for that type is shown above it.

3. When a parameter is displayed that is to be changed, use the arrow keys to change the setting.

Press the ENTER button to confirm a change.

4. Press and hold the SET button for 3 seconds to exit the Setup mode. Note that the meter

automatically switches out of the Setup mode if no key is pressed within 7 seconds.

The available Setup parameters are listed below. Additional detailed information is provided

below this list:

dAtE

Set the clock (Year/Month/Date; Hours/Minutes/Seconds)

SP-t

Set the datalogger sampling rate (Hours/Minutes/Seconds)

PoFF

Automatic power-off management (Enable or disable the auto-power off function)

bEEP

Set the beeper sound ON/OFF

dEC

Set the numerical format; USA (decimal: 20.00) or European (comma: 20,00)

Sd-F

Format the SD memory card

unit

Set Metric or Imperial unit of measure

Setting the Clock Time

1. Access the dAtE parameter.

2. Use the ENTER button to step through the selections (year, month, day, hour, minute, second)

3. Use the arrow keys to change a value

4. Press and hold the SET button for 3 seconds to exit to the normal operation mode (or simply

wait 7 seconds for the meter to automatically switch to the normal operating mode).

5. The clock will keep accurate time even when the meter is switched off. However, if the battery

expires the clock will have to be reset after fresh batteries are installed.

Setting the Datalogger Sampling Time (Rate)

1. Access the SP-t parameter.

2. The sampling rate can be set to 0, 1, 2, 5, 10, 30, 60, 120, 300, 600, 1800 or 3600 seconds.

3. Use the arrow keys to change the digit values.

PresstheENTER button toconfirm theentry.

5. Press and hold the SET button for 3 seconds to exit to the normal operation mode (or simply

wait 7 seconds for the meter to automatically switch to the normal operating mode).

VB500-EU-EN-V1.2-10/11

Enabling/Disabling the Auto Power OFF Feature

1. Access the PoFF parameter.

2. Use the arrow buttons to select ON or OFF. With the Auto Power OFF feature enabled, the

meter will automatically switch OFF after 10 minutes of inactivity.

3. Press ENTER to confirm setting.

4. Press and hold the SET button for 3 seconds to exit to the normal operation mode (or simply

wait 7 seconds for the meter to automatically switch to the normal operating mode).

Set the Beeper Sound ON or OFF

1. Access the bEEP parameter.

2. Use the arrow buttons to select ON or OFF.

3. Press ENTER to confirm setting.

4. Press and hold the SET button for 3 seconds to exit to the normal operation mode (or simply

wait 7 seconds for the meter to automatically switch to the normal operating mode).

Numerical Format (comma or decimal)

European and USA numerical formats differ. The meter defaults to USA mode where a decimal

point is used to separate units from tenths, i.e. 20.00; The European format uses a comma, i.e.

20,00 to separate units from tenths. To change this setting:

1. Access the dEC parameter.

2. Use the arrow buttons to select USA or EUro.

3. Press ENTER to confirm setting.

4. Press and hold the SET button for 3 seconds to exit to the normal operation mode (or simply

wait 7 seconds for the meter to automatically switch to the normal operating mode).

SD Card FORMATTING

1. Access the Sd-F parameter.

2. Use the arrow buttons to select YES to format the card (select NO to abort). Note that all data

on the card will be lost if formatting is attempted.

3. Press ENTER to confirm selection.

4. Press ENTER again to re-confirm.

5. The meter will automatically return to the normal operating mode when formatting is complete.

If not, press and hold the SET button for 3 seconds to exit to the normal operation mode.

VB500-EU-EN-V1.2-10/11

Set Metric or Imperial Units

1. Access the uit parameter.

2. Use the arrow buttons to select mm/s

or ft/s

3. Press ENTER to confirm selection.

4. Press and hold the SET button for 3 seconds to exit to the normal operation mode (or simply

wait 7 seconds for the meter to automatically switch to the normal operating mode).

System Reset

If the meter’s keys become inoperable or if the display freezes, the Reset button can be used to

reset the instrument.

•Use a paper clip or similar item to momentarily press the reset button located on the upper right

side of the instrument.

•After pressing the Reset button, switch the instrument ON by pressing and holding the POWER

key for 3 seconds. If using the power adaptor unplug the adaptor and then plug it back in again

to power the meter.

Audio Output

The Audio Output provides a means to hear the vibration on channel 1.

VB500-EU-EN-V1.2-10/11

Datalogging

Types of Data Recording

•Manual Datalogging: Manually log up to 99 readings onto an SD card via push-button press.

•Automatic Datalogging: Automatically log data onto an SD memory card where the number of

data points is virtually limited only by the card size. Readings are logged at a rate specified by

the user.

SD Card Information

•Insert an SD card (from 1G size up to 16G) into the SD card slot at the bottom of the meter. The

card must be inserted with the front of the card (label side) facing toward the rear of the meter.

•If the SD card is being used for the first time it is recommended that the card be formatted and

the logger’s clock set to allow for accurate date/time stamping during datalogging sessions.

Refer to the Setup Mode section for SD card formatting and time/date setting instructions.

•European and USA numerical formats differ. The data on the SD card can be formatted for

either format. The meter defaults to USA mode where a decimal point is used to separate units

from tenths, i.e. 20.00. The European format uses a comma, i.e. 20,00. To change this setting,

refer to the Setup Mode section.

Manual Datalogging

In the manual mode the user presses the LOG button to manually log a reading onto the SD card.

1. Set the sampling rate to ‘0’ seconds as described in the Setup Mode section.

2. Press and hold the LOG button for 3 seconds and the DATALOGGER icon will appear on the

LCD; the lower portion of the display will show p-n(n= memory position number 1-99). Note

that if PSI is set as the unit of measure it appears as P51 (where a ‘5’ is used as an ‘S’) in the

same area of the LCD where memory locations are shown. This can be disorienting at first.

3. Momentarily press the LOG button to store a reading. The DATALOGGER icon will flash each

time a data point is stored.

4. Use the ▲and ▼buttons to select one of the 99 data memory positions in which to record.

5. To exit the manual datalogging mode, press and hold the LOG button for 3 seconds. The

DATALOGGER icon will switch off.

VB500-EU-EN-V1.2-10/11

Automatic Datalogging

In automatic datalogging mode the meter takes and stores a reading at a user-specified sampling

rate onto an SD memory card. The meter defaults to a sampling rate of two seconds. To change the

sampling rate, refer to the Setup Mode section (the sampling rate cannot be ‘0’ for automatic

datalogging):

1. Select the sampling rate in the Setup Mode to a value other than zero.

2. Press and hold the LOG button for 3 seconds. The meter will flash the ‘LOGGER’ icon indicating

that readings are now being automatically recorded to the SD card.

3. If a card is not inserted or if the card is defective, the meter will display CARD –E. In this case,

press the LOG button and try again with a valid SD card.

4. To pause the datalogger, press the LOG button momentarily. The ‘LOGGER’ icon will stop

flashing. To resume logging, momentarily press the LOG button.

5. To terminate the datalogging session, press and hold the LOG button for 3 seconds.

6. When an SD card is used for the first time a folder is created on the card and named VBC01.

Up to 99 spreadsheet documents (each with 30,000 readings) can be stored in this folder.

7. When datalogging begins a new spreadsheet document named VBC01001.xls is created on the

SD card in the VBC01 folder. The data recorded will be placed in the VBC01001.xls document

until 30,000 readings are reached.

8. If the measurement session exceeds 30,000 readings, a new document will be created

(VBC01002.xls) where another 30,000 readings can be stored. This method continues for up to

99 documents, after which another folder is created (VBC02) where another 99 spreadsheet

documents can be stored. This process continues in this same fashion with folders VBC03

through VBC10 (last allowable folder).

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