VM8205SD - General Tools And Instruments
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1. button and hold it for at least three seconds until the term REC disappears from the top line of the display The display will then revert to showing the current reading AUTOMATIC VS MANUAL DATALOGGING The VM8205SD can automatically log data at a user selected sampling period from 1 second 3 600 seconds one hour To view the sampling time that the instrument has been set up to use press the LOGGER A button which has the words Sampling check stenciled below it once To change the sampling time perform Step 7 of the setup procedure 1 To start automatic datalogging press the REC ENTER button once The top line of the display will then show the term REC Pressing the LOGGER A button at this point will make REC flash and add the flashing term LOGGER at the top right of the display This indicates that the instrument is currently storing measured values and their time stamps in memory 2 To pause automatic datalogging press the LOGGER A button once this action makes the flashing term LOGGER disappear from the top right of the display and changes the term REC from flashing to constant Pressing the LOGGER A button again resumes automatic datalogging 3 To end automatic datalogging press the REC ENTER button and hold it for at least two seconds This action causes the REC message to disappear 4 To log data manually set the sampling time to zero using Step 7 of the setup procedure Then pr2. magnetic base clean Store them in the carrying case when you are not using the meter When the icon cx appears in the left corner of the display it s time to replace the six AA batteries that power the instrument although measurements will remain valid for several hours after the low battery indicator first appears Replacing the batteries requires removing the two screws that hold the battery compartment cover in place as explained in Step 1 of the setup procedure After inserting fresh batteries in the correct orientation tighten the screws to secure the cover If the meter freezes like a computer and buttons become unresponsive try resetting the instrument by pushing the RESET button on its right side callout 1 11 of Fig 1 with the end of a paper clip Remove the batteries when storing the meter for an extended period of time Do not drop or disassemble the meter or immerse it in water OPTIONAL ACCESSORIES The only optional accessory for the VM8205SD available from General Tools amp Instruments is a 9VDC adapter for a 110V power supply WARRANTY INFORMATION General Tools amp Instruments General s VM8205SD Vibration Meter with Datalogging SD Card is warranted to the original purchaser to be free from defects in material and workmanship Subject to certain restrictions General will repair or replace this instrument if after examination the company determines it to be defective in material or workma
3. possible press the LOGGER A button and hold it for at least five seconds until the display reads zero Whenever the meter is in any measurement mode you can turn off the backlight which is on by default by briefly pressing but not holding the POWER ESC button To reactivate the backlight briefly press the button again Whenever the instrument is in any measurement mode you also can check the current date and time by briefly pressing the SET W button which has the words Time check stenciled below it Doing so causes both values to appear briefly at the lower left of the display HOLDING AND STORING MEASUREMENTS RMS VALUES ONLY 1 To hold a measured value press the FUNC HOLD NEXT button during the measurement Doing so will cause the word HOLD to appear at the top of the display Pressing the FUNC HOLD NEXT button again releases the hold 2 To record and recall readings press the REC ENTER button while making measurements This will make the term REC appear at the top of the display Pressing the REC ENTER button again briefly will make the term MAX appear to the right of REC and switch the display to the maximum value stored in memory during the last recording session Pressing the REC ENTER button again briefly will make the term MIN appear to the right of REC and switch the display to the minimum value stored during the last session 3 To exit recording mode press the REC ENTER
4. the VM8205SD press the POWER ESC button and hold it until the instrument responds with a long beep When the meter powers on a series of transient startup screens will briefly appear Once the display has stabilized perform the following six setup steps in the order presented 3 Set the date and time Press the SET W button callout 1 5 and hold it for at least five seconds until the word dAtE appears in the center of the display along with the flashing value 00 00 00 at the lower left above yy mm dd Set the current year by pressing the SET W or LOGGER A button repeatedly until the correct value appears above yy Quickly within three seconds press the REC ENTER button to store the setting The next screen that appears will have the value above mm flashing Use the SET W or LOGGER A button to navigate to the current month and press the REC ENTER button to store the setting When the next screen flashes the value above dd again use the SET W or LOGGER A button to navigate to the current day and press the REC ENTER button to store the setting If you press buttons too slowly in setup mode the screen will revert to the normal display To return to the setup sequence press and hold the SET W button again To move ahead to the next field in the sequence or to the next parameter press the FUNC HOLD NEXT button Once you have set the date the display will prompt you to set the hour minute and secon
5. word Unit stenciled below it Doing so cycles through the six parameters and units in the following order e ACC in m s e ACC ing e VEL in mm s e VEL in cm s e ACC in ft s VEL in inch s Pressing the REC ENTER button when VEL in inch s is displayed returns the display to ACC in m s Releasing the button saves the displayed parameter unit as the default For most industrial vibration measurement applications use an acceleration setting Pressing the FUNC HOLD NEXT button repeatedly cycles through the three functions that can be performed on measured values The meter can e Show the root mean square RMS value of measured acceleration or velocity readings this is the typical function performed on acceleration and velocity measurements e Measure the peak value in a series of measurements the display shows PEAK e Update and hold the peak value the display shows Max HOLD To clear a previously stored peak value press the LOGGER 4 button and hold it for at least five seconds 5 To choose the function to be applied to measured values press the FUNC HOLD NEXT button until the text corresponding to the desired function appears on the display Then release the button Doing so makes the selected function the default until the FUNC HOLD NEXT button is pressed again The following tables correlate the severity of a machine s vibration good acceptable still permissible and dangerous with a range of values for e
6. A button 1 7 Socket for vibration probe BNC plug 1 8 SD card socket 4 1 9 RS 232 output jack 1 10 RESET button 1 11 Socket for 9VDC AC adapter 1 12 Battery compartment cover 1 13 Battery compartment cover screws 1 14 Kickstand 1 15 Tripod attachment nut 1 16 Magnetic base 1 17 Vibration sensor 1 18 Vibration sensor input socket 1 19 Vibration probe mini plug 1 20 Vibration probe cable 1 21 Vibration probe BNC plug SETUP 1 Choose the power source Before using the VM8205SD make sure it is powered by fresh batteries or an optional 9VDC AC adapter plugged into the bottom jack on its right side callout 1 12 To remove the battery compartment cover callout 1 13 remove the two screws holding it in place callout 1 14 Then install six AA batteries in the correct orientation using the polarity marks on the inside of the compartment as a guide Replace the cover by replacing the two screws 2 Install an SD card To prepare for setup also install the supplied 2 GB SD memory card or another card with a capacity from 1 GB to 16 GB in the socket on the bottom of the meter callout 1 9 When installing the card make sure its gold contacts are facing front and push the card into the socket until you hear a click To remove the card push it in until you hear a click and the card pops out Now power on the instrument by pressing the POWER ESC button callout 1 2 to generate a short beep To power off
7. GENERAL VM8205SD USER S MANUAL SET v Time eek 5D Card Data Logger VIBRATION METER Acceleration Velocity GENERAL RUE VIBRATION METER WITH DATALOGGING SD CARD Please read this manual carefully and thoroughly before using this product TABLE OF CONTENTS Introduction 1 cece eee 3 Key Features u 44 ra 3 Operating InstructionS 4 10 What s in the case 00ooooooooo 4 A E ia 5 6 Normal Operati0N 6 8 Holding and Storing Measurements RMS values only 8 Automatic vs Manual Datalogging 9 Transferring Data from the SD Card to a Computer oooooocoooc rn 10 Specifications 0oooooomommomomo 11 Maintenance amp Troubleshooting Tips 12 Optional AccessorieS 00o0oo0o ooo 12 Warranty Information 12 Return for Repair Policy 13 INTRODUCTION Thank you for purchasing General Tools amp Instruments VM8205SD Vibration Meter with Datalogging SD Card Please read this user s manual carefully and thoroughly before using the meter The VM8205SD is a general purpose handheld instrument that can measure the acceleration or velocity of a machine as an indicator of its vibration level All industrial machinery vibrates and a machine s vibration level can serve as a proxy for its condition Imbalance misalignment or loose bolts will cause
8. Vibration probe measures acceleration or velocity e Included magnetic base facilitates attachment of probe to metal parts or machine housing e Big 2 5 in diagonal front panel green backlit LCD is easy to read e Displays maximum and minimum readings and holds any RMS reading e Automatically logs measurements at sampling time settable from one second to one hour e Also supports manual datalogging and changing of SD card storage location e Outputs Excel compatible data logs e Accepts SD memory cards of up to 16 GB capacity e Powered by six AA batteries or optional 9V AC DC adapter OPERATING INSTRUCTIONS WHAT S IN THE CASE The VM8205SD comes fully assembled in a carrying case along with a vibration sensing probe a magnetic base a2 GB SD memory card and this user s manual Figure 1 shows all of the controls and indicators on the front right side back top and bottom of the VM8205SD The drawing also shows the components of the included vibration probe Familiarize yourself with the positions and functions of these controls indicators and connectors before moving on to the setup procedure FRONT 1 2 1 5 BOTTOM 1 8 SIDE a N Ss G i as A BACK VIBRATION PROBE 1 The VM8205SD s controls and indicators and other physical features 1 1 Liquid crystal display 1 2 POWER ESC button 1 3 FUNC HOLD NEXT button 1 4 REC ENTER button 1 5 SET W button 1 6 LOGGER
9. ach of the four machinery classifications recognized by IS02372 and VDI 2056 Small machines especially production Medium sized machines especially electrical motors of up to 15 kW electrical motors with 15 up to 75 kW Group K output without special foundations Good 0 to 0 71 mm s Group Acceptable 0 72 to 1 80 mm s _Good Otol izmms Still permissible 1 81 to 4 5 mm s Acceptable 1 13 to 2 80 mm s Dangerous gt 4 5 mm s Still permissible 2 81 to 7 1 mm s Dangerous gt 7 1 mm s Large machines on heavy foundations Largest machines and turbo machines Group G with a special foundations Group T Good 0 to 1 80 mm s Good 0 to 2 80 mm s Acceptable 1 81 to 4 50 mm s Acceptable 2 81 to 7 10 mm s Still permissible 4 51 to 11 2 mm s Still permissible 7 11 to 18 0 mm s Dangerous gt 11 2 mm s Dangerous gt 18 mm s For any of several reasons e g temperature changes weak or new batteries infrequent use of the meter the display may show a small non zero value after the vibration sensor is plugged in but before it is placed in contact with a machine In most cases those residual readings will be dwarfed by vibration inputs 6 To eliminate residual readings perform the following procedure With the vibration probe BNC plug seated in the socket on the top of the meter use the REC ENTER button to select any of the three acceleration ACC settings Keeping the vibration sensor away from machinery and as motionless as
10. d of the current time Again use the SET W or LOGGER A buttons to navigate to the correct values and the REC ENTER button to store the settings 4 Choose a decimal point or comma to represent the decimal division between integers and fractions for example American style 20 88 vs European style 20 88 Once you have set the date and time the display will show the word bASIC above the phrase dEC Press the SET W button to make bASIC American style or Euro appear in the upper display as desired Press the REC ENTER button to store the selection as the default 5 Enable or disable auto power off Once the format of decimal point divisions has been set and stored the display will show the word yES over the term PoFF Press the SET Y button until the desired automatic power off management scheme yES for enable no for disable is displayed Press the REC ENTER button to store the selection If enabled the power off function shuts off the VM8205SD after a period of inactivity of ten minutes 6 Enable or disable the beeper Once the auto power off scheme has been chosen and stored the display will show the word yES over the word bEEP Press the SET W button until the desired setting yES or no is displayed and then press the REC ENTER button to store the selection as the default 7 Set the datalogging sampling time Once the beeper has been enabled or disabled the di
11. d time or show the term ESC If ESC appears press the POWER ESC button to exit the setup procedure and enter normal operating mode NORMAL OPERATION 1 To prepare to make vibration measurements power on the VM8205SD and make sure an SD card is firmly seated in the socket on the bottom of the meter Seat the vibration probe BNC plug callout 1 21 of Fig 1 in the socket on the top of the meter Then seat the vibration probe mini plug callout 1 19 in the vibration sensor input socket callout 1 18 2 If the surface of the machine being measured is a non ferrous material hold the vibration sensor callout 1 17 in your hand and touch its end to the machine 3 If the surface material is ferrous plug the sensor into the magnetic base callout 1 16 and attach the base to the machine s surface In both cases avoid touching the vibration probe cable callout 1 20 with your finger or hand 6 The meter can measure two vibration related parameters acceleration and velocity and show readings of each one in any of three units Acceleration can be measured and displayed using the term ACC in the metric unit m s the metric unit g gravitational force or the English unit ft s Velocity can be measured and displayed using the term VEL the in the metric unit mm s the metric unit cm s or the English unit inch s 4 To select the measurement parameter and its units press the REC ENTER button which has the
12. ess the REC ENTER button once The display will show the term REC on the top line a value in the middle and below it the letter P on the left and a number from 1 to 99 on the same line to the right The number indicates the position on the SD card that will be used to store manually logged data Now press the LOGGER A button This will cause the beeper to sound and the term LOGGER to briefly appear at the upper right of the display As in automatic datalogging mode in this mode the instrument is storing measurements and their time stamps on the SD card In manual datalogging mode however measurements are being stored continuously with a sampling time of zero and their locations on the card can be changed 5 To change the storage location of manually logged data press the SET W button once this causes the P to disappear from the left side of the display and the value on its line to begin flashing Once the flashing begins you can use the SET W and LOGGER A buttons to change the flashing value to any number between 1 and 99 Once you have chosen the storage location press the REC ENTER button to save the setting This causes the value to stop flashing and the P to return 6 To end manual datalogging press the REC ENTER button and hold it for at least three seconds This action causes the REC message to disappear from the top line of the display TRANSFERRING DATA FROM THE SD CARD TO A COMPUTER Af
13. hite Street New York NY 10013 3567 PHONE 212 431 6100 FAX 212 431 6499 TOLL FREE 800 697 8665 e mail sales generaltools com www generaltools com VM8205SD User s Manual Specifications subject to change without notice 2010 GENERAL TOOLS 8 INSTRUMENTS NOTICE WE ARE NOT RESPONSIBLE FOR TYPOGRAPHICAL ERRORS MAN VM8205SD 12 03 10
14. nship for a period of one year This warranty does not apply to damages that General determines to be from an attempted repair by non authorized personnel or misuse alterations normal wear and tear or accidental damage The defective unit must be returned to General Tools amp Instruments or to a General authorized service center freight prepaid and insured Acceptance of the exclusive repair and replacement remedies described herein is a condition of the contract for purchase of this product In no event shall General be liable for any incidental special consequential or punitive damages or for any cost attorneys fees expenses or losses alleged to be a consequence of any damage due to failure of or defect in any product including but not limited to any claims for loss of profits RETURN FOR REPAIR POLICY Every effort has been made to provide you with a reliable product of superior quality However in the event your instrument requires repair please contact our Customer Service to obtain an RGA Return Goods Authorization number before forwarding the unit via prepaid freight to the attention of our Service Center at this address General Tools amp Instruments 80 White Street New York NY 10013 212 431 6100 Remember to include a copy of your proof of purchase your return address and your phone number and or e mail address NOTES NOTES Specialty Tools amp Instruments GENERAL TOOLS amp INSTRUMENTS 80 W
15. nt range Measurement accuracy Measurement resolution For acceleration 0 5 to 199 9 m sec 0 05 to 20 39 g 2 to 656 ft sec for velocity 0 5 to 199 9 mm sec 0 05 to 19 99 cm s 0 02 to 7 87 inch s For acceleration and velocity 5 of reading 2 digits For acceleration 0 1 m sec 0 01 g 1 ft sec for velocity 0 1m sec 0 01 inches sec Calibration point For acceleration 50 m sec 160 Hz for velocity 50 mm sec 160 Hz Sampling time options Settable parameters 0 1 2 5 10 30 60 120 300 600 1800 or 3600 seconds 0 seconds to 1 hour Date time decimal point or comma decimal division auto power off beep sound sampling time Storable recallable readings Maximum minimum peak RMS values only SD card capacity Operating temperature Operating relative humidity 1 GB to 16 GB 32 to 122 F 0 to 50 C 0 to 85 Power source Power consumption Dimensions of meter 6 Alkaline AA batteries or optional 9 VDC AC adapter 15 mADC normal operation with backlight off and SD card not saving data 36 mADC with backlight on and card saving data 48 mADC with backlight on and card saving data 7 99 x 2 99 x 1 50 in 203 x 76 x 38mm Weight of meter 1 13 Ib 515g Dimensions of probe 1 46 length x 0 63 diameter in 37 x 16mm Length of probe cable 47 24 in 1 2m MAINTENANCE amp TROUBLESHOOTING TIPS Keep the vibration probe and cable and the
16. splay will show a value above the letters SP t Press the SET W or LOGGER A button to decrease or increase the value until the desired sampling time appears above SP t The options are 0 1 2 5 10 30 60 120 300 600 1800 and 3600 seconds 0 seconds to 1 hour 8 Format the SD card Once the sampling time has been set and stored the term Sd F will appear in the lower half of the display Press the REC ENTER button Pressing the REC ENTER button causes the word no or yES to appear over the term Sd F Press the W button to make a selection Choose yES whenever a new SD card is being used or when a used card is being repurposed from use with another SD card instrument or a camera for example and all data on it is to be erased Choose no to preserve any data on a card previously used with this instrument If you choose yES after you press the REC ENTER button the instrument will prompt you to confirm that decision by displaying the term Ent below yES and sounding three beeps To confirm that you want to begin the erasure formatting procedure press the REC ENTER button Ent will then flash several times and the instrument will sound another three beeps to confirm that the SD card has been erased and formatted Once the SD card has been formatted or not the display will then either return to the first of the six steps in the setup sequence setting the current date an
17. ter automatic or manual datalogging of measurements remove the SD card from the meter and plug it into your computer either directly if it has an SD card slot or through an SD card reader Because the files containing time stamped data logs have the file extension xls they open in Microsoft s Excel application Figures 2 and 3 show two kinds of Excel presentations a data only screen and a graphics only screen Date Time 201096 10 06 14 VAY ACC g 2010 96 10 06 16 0 51 ACC g 20106 10 06 48 0 53 ACL g 2010 9 5 10 06 50 0 46 ACC g 2010 9 6 10 06 52 0 48 ACC g 2010 96 10 06 54 0 51 ACC g 201096 10 06 56 0 47 ACC y 2010 9 6 10 06 58 O SLACC g 201096 10 07 00 0 55 ACC g _20109 6 10 07 02 0 51 ACC z 11 2010946 10 07 04 0 46 ACC g 4 12 20100 10 07 06 0 51 ACC g Re 2000J3DhMAwNR 13 20106 10 07 08 U 45 ACC g l4 2010 76 10 07 10 U o2 ACC g 15 201046 10 07 12 0 51 ACC g 6 91011 12 131 13 Fig 3 Typical Excel graphics only screen SPECIFICATIONS Embedded microcontroller Custom one chip LSI device Display type Display size Liquid crystal with green backlight 2 05 x 1 5 in 52 x 38mm Parameters measured Acceleration velocity Units Displayed value options Input frequency range For acceleration m sec g gravitational force or ft sec for velocity mm sec cm sec or inches sec Root mean square RMS peak max hold 10 Hz to 1 kHz Measureme
18. the vibration level to increase indicating the need for maintenance The meter is a professional quality instrument that comes with a vibration probe as well as a magnetic base for attaching the probe to any metal part of a machine or its housing The meter s sensitivity and frequency spectrum of 10 Hz to 1 kHz comply with ISO 2954 the standard for measuring mechanical vibration of rotating and reciprocating machinery Measurements made by the probe can be displayed in either of two metric units or one English unit Vibration inputs can be displayed in the preferred way as root mean square RMS values The meter also can measure hold and update the RMS peak value in a series of measurements Because it is microprocessor based the VM8205SD can make full use of the portability reliability and large storage capacities that SD memory cards offer Measurements can be made automatically at any sampling rate between one second and one hour After time stamping and storing the measurements on an SD card plugged into the meter a process called datalogging the user can remove the card and plug it into to a laptop or desktop computer either directly or via a USB card reader The data logs are stored on the card as files with the xls extension which can be opened by Microsoft s Excel application The VM8205SD has a backlit 2 1 2 in diagonal display and is powered by six AA Alkaline batteries or an optional 9 VDC AC adapter KEY FEATURES e
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