Brüel & Kjær 2239 B Manual
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Brüel & Kjær 2239 B Manual

Hand-arm vibration and integrating sound level meter
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Type 2239 B
Hand-Arm Vibration and
Integrating Sound Level Meter
Hand-Arm Vibration Functions
From serial no. 1733094
December 2001
Brüel & Kjær
BB1224 – 11

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  • Page 1 Type 2239 B Hand-Arm Vibration and Integrating Sound Level Meter Hand-Arm Vibration Functions From serial no. 1733094 December 2001 Brüel & Kjær BB1224 – 11...
  • Page 2 All rights reserved. No part of this publication may be reproduced or distributed in any form, or by any means, without prior consent in writing from Brüel & Kjær A/S, Nærum, Denmark. Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...

  • Page 3: Table Of Contents

    Making Measurement Settings................30 Chapter 4 Data Operations ......................37 Working with Records.................... 38 Using a Portable Printer..................46 Transferring Records to a Computer............... 50 Using the AC Output ..................... 53 BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...
  • Page 4 ......................67 The Measurement Window..................68 Displayed Parameters..................... 69 Set-up Functions Flow Chart .................. 72 Measurement Range Flow Chart................74 Data Functions Flow Chart..................75 Chapter 8 Index ........................... 79 Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...

  • Page 5: Chapter 1 Introduction

    Chapter 1 Introduction BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...

  • Page 6: About This Manual

    Chapter 7 – Quick Reference: contains several flow charts and some brief descriptions to help you find the settings you need when working with the instrument. Chapter 8 – Index Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...

  • Page 7: Features

    Courier type face. For example, “Press until Aeq is visible on the screen.” Features Type 2239 B contains several features that enable you to take and save hand-arm vibration measurements under a variety of conditions. Features include: Ease of use...

  • Page 8: Parameters

    Settings can not be changed while the instrument is measuring. For more in- formation about setting up the vibration meter for measure- ment, see section 3.5. Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...

  • Page 9: Memory

    The records are stored in non-volatile memory, which is pow- ered by the backup battery. All records are preserved when you turn off the instrument. The following parameters are stored in each record: BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...

  • Page 10: Backlight

    Type 2239B includes a backlight, which makes the display easier to read in low light situations. Press to turn it on or off. To save batteries, the light will switch off automatically after 30 seconds. Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...

  • Page 11: Chapter 2 Getting Started

    Chapter 2 Getting Started BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...

  • Page 12: Switching Between Sound And Vibration Functions

    As the batteries are used, the level will fall until the indicator is completely empty. When it is time to replace the batteries, the indicator is empty and blinking. Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...
  • Page 13 (at room temperature). When the indi- cator is blinking, there is less than one hour left. Under extreme cold or hot environments, the remaining time may be less. BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...
  • Page 14 For long-term storage, remove the batteries and keep the vibration meter in a dry place. Never mix different makes or types of battery. Never mix charged and discharged batteries. Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...
  • Page 15 Fig.2.4 Type 2239B with the battery lid removed Note: If you cannot switch on the vibration meter after replac- ing the batteries, check that you have inserted them correctly. BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...
  • Page 16 If this happens, then your instrument’s calibration may no longer be valid. Contact your Brüel & Kjær dealer to have your hand-arm vibration meter recalibrated. Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...

  • Page 17: Pushkey Definitions

    Press this key to step through the data windows. With these windows you can store, recall, erase, print and/or download records of your measurements. Range Press this key to step through the available measurement ranges. BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...
  • Page 18 Measure- ment Window. Backlight Switches on or off the display’s back- light. To save batteries, the backlight switches off automatically after 30 seconds. Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...

  • Page 19: The Measurement Window

    If an overload has oc- curred at any time during a measurement in progress, then this number will blink continuously (this is called a BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...
  • Page 20 L: Linear (6.3 Hz to 5 kHz) 10. RMS parameter: Shows the type of RMS reading displayed , or Inst). Press to select the displayed parameters. 11. Value of the RMS parameter Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...

  • Page 21: Choosing The Language

    Measurement Window. Important If the Set-up Language window unexpectedly appears when you start up your instrument (i.e. when you have not pressed BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...
  • Page 22 This means that your factory calibration is no longer valid and must be redone at a Brüel & Kjær service centre. Contact your Brüel & Kjær dealer for assistance. Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...

  • Page 23: Taking Measurements

    Chapter 3 Taking Measurements BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...

  • Page 24: Calibration

    The vibration meter can be calibrated with Brüel & Kjær Cali- bration Exciter Type 4294 or any other certified vibration me- ter calibrator that emits a 159.2 Hz signal at 10 m/s Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...
  • Page 25 Chapter 3 – Taking Measurements Calibration 3.1.4 Calibrating Type 2239 B Make sure the calibration equipment is located away from all other sources of vibration. Fit the accelerometer securely onto the calibrator as de- scribed in your calibrator manual. Press to switch on the vibration meter.

  • Page 26: Mounting The Accelerometer

    Brüel & Kjær dealer. Also, see section 5.4. Mounting the Accelerometer Type 2239 B comes with a mounting bracket, which enables you to attach the accelerometer to the tool or machine you are measuring. It enables you to take readings along all three axes (x, y, and z).

  • Page 27: Taking Measurements

    Fig. 3.2). Begin a new measurement by pressing and repeat from step 4. Step through the displayed measurement parameters by pressing . If some of them show no value ( ---- m/ss ), BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...
  • Page 28 To take a preset-timed measurement, the preset time must be set to a specific interval (not “ Off ”). See section 3.5.3 for more information about making this setting. Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...
  • Page 29 Take note of your readings. If you want to make a print using a portable printer, then refer to section 4.2 for connecting and printing instruc- tions. BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...
  • Page 30 Overloads are also indicated in printouts and in records. In recalled records, all parameter values will blink if an overload occurred in that record (see section 4.1.3) Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...
  • Page 31 ” on the printout (see section 4.2.2) load Spreadsheet results have a special overload column in which overloads are indicated with “ Y ”, for yes (or the equivalent for language settings other than English) BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...

  • Page 32: Reading The Parameters

    The maximum RMS acceleration that occurred dur- ing the measurement period. The minimum RMS acceleration that occurred dur- ing the measurement period. The four-hour energy equivalent RMS acceleration. Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...
  • Page 33 In some cases, you may want to use a linear setting. You may need this to conform with some local regulations or for use BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...

  • Page 34: Making Measurement Settings

    (except calibration, which is described in section 3.1) and how they will affect your measurements. 3.5.1 Setting the Measurement Range The vibration meter is capable of measuring in either of the following acceleration ranges: Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...
  • Page 35 “ OVL ”, then vibration levels are overloading the instrument; select the higher range. BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...
  • Page 36 To store the new frequency weighting, press . (If you prefer to cancel your changes and return to the old fre- quency weighting, press .) You will then return to the Measurement Window. Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...
  • Page 37 The Measurement Window must read STOP (as shown be- low), not RUN . Press until the Set-up Preset Time Window is visible on the screen, as shown below. BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...
  • Page 38 The Measurement Window must read STOP (as shown in Fig. 3.8), not RUN . Press until the Date/Time Set-up Window is visible on the screen, as shown in Fig. 3.10. Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...
  • Page 39 To store the new date and time, press . It is not possible to cancel Date/Time changes. You will then return to the Measurement Window. BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...
  • Page 40 Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...

  • Page 41: Chapter 4 Data Operations

    Chapter 4 Data Operations BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...

  • Page 42: Working With Records

    You are able to erase the last record taken or all records at once (see section 4.1.4). Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...
  • Page 43 4). You will then return to the Measurement Window. If you wish to cancel the operation rather than store the record, press to return to the Measurement Window. BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...
  • Page 44 Always erase all records after you have downloaded and saved them to your computer’s hard disk. Erase records of invalid measurements (e.g. overloads) right away by using the Erase Last Record command (see section 4.1.4). Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...
  • Page 45 To step through the parameters stored in the record, press . They are displayed in the following order: (default) BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...
  • Page 46 . To view later records, or to wrap back around to the first record, press When you have finished viewing your records, press to return to the Measurement Window. Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...
  • Page 47 . If you select to erase the record, then a warning like the one shown in Fig. 4.8 will appear to make sure you have not made a mistake. BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...
  • Page 48 00:05:41 17.9 m/ss H Aeq 7.26 m/ss Fig.4.9 The display when measurement is stopped Press until the Erase All Records Window is visible on the screen, as shown below. Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...
  • Page 49 Fig.4.11 The Erase All Records Warning If you mean to erase all records, press again. Other- wise, press to leave all records stored and return to the Measurement Window. BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...

  • Page 50: Using A Portable Printer

    If necessary, switch on the printer as described in your printer manual. Configure your printer to use the communication setup listed below. Refer to your printer manual for instructions. Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...
  • Page 51 Print Measurement Window is visible on the screen, as shown below. OUTPUT Current Measurement to Printer Fig.4.13 The Print Measurement Window Press to begin printing. Press to cancel the op- eration. BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...
  • Page 52 Reading the Printout Type 2239B generates a printout that supplies the following information: Frequency weighting Measurement range Date and time Elapsed time Overload status Sample printouts are shown in Fig. 4.14. Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...
  • Page 53 2.64 m/ss Fig.4.14 Print examples. In the example on the rigwqht an overload has occurred, which is indicated by the “Overload” label on the eighth line from the bottom BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...

  • Page 54: Transferring Records To A Computer

    Serial Interface Serial Port 960159e Fig.4.15 Location of the serial port Tighten the cable’s connector screws to the screw holes on the vibration meter. Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...
  • Page 55 If you want to open the file using another spreadsheet program (besides Microsoft Excel), then start your appli- cation and open the file from there. Refer to your pro- gram’s user manual for instructions. BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...
  • Page 56 Results Window is visible on the screen, as shown below. OUTPUT Stored Results Spreadsheet Fig.4.16 The Output Stored Results Window Press to begin downloading the results. (Press to cancel the operation.) Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...

  • Page 57: Using The Ac Output

    Connect the BNC end of the cable (using an adaptor if required) to your DAT recorder. Switch on the vibration meter, calibrator, and DAT recorder. BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...
  • Page 58 Begin recording on the DAT and use your vibration meter as usual. 10. If you intend to use a sound analyzer on the recording, then repeat step 8. Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...

  • Page 59: Maintenance And Troubleshooting

    Chapter 5 Maintenance and Troubleshooting BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...

  • Page 60: Service And Repair

    If the instrument casing becomes dirty, then wipe it with a cloth lightly dampened with water. Do not use abrasive cleans- ers or solvents. Do not allow moisture to enter the connectors or casing. Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...

  • Page 61: Troubleshooting

    Please contact your local Brüel & Kjær dealer for assistance. For help with error messages or other warnings that appear on the screen, refer to section 5.4. BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...

  • Page 62: Warnings And Error Messages

    Chapter 5 – Maintenance and Troubleshooting Warnings and Error messages Warnings and Error messages If you get an error message while using or calibrating your Type 2239 B, then refer to the chart below. Message Occurs Solution Wait for measure-...
  • Page 63 If you press Make and store when there are no measurements *** WARNING **** records saved and the before using this No Data buffer is empty. function. Available BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...
  • Page 64 Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...

  • Page 65: Chapter 6 Specifications

    Chapter 6 Specifications BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...

  • Page 66: Specifications

    Automatic reset at 1 s intervals. cludes an auto time-out to save batteries. 0.01 100k Frequency (Hz) 960562e Fig.6.1 Frequency response with linear frequency weighting Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...
  • Page 67 (gives an indication of 1 m/s when HA Result Output Formats: weighted Buffer (printer format) or all records (spreadsheet format) 0.01 0.001 0.0001 Frequency (Hz) 960561e Fig.6.2 Frequency response with hand-arm vibration weighting BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...
  • Page 68 Charging time: ~24 hours (1st time) Keeps clock and memories operating for 6months (typically) if fully charged PHYSICAL CHARACTERISTICS: Size: 257 × 97 × 41 mm Weight: 460 g (incl. batteries) Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...

  • Page 69: Ordering Information

    Chapter 6 – Specifications Ordering Information Ordering Information Type 2239 B Sound Level and Hand- AO 0283: Super-Low-Noise Teflon Arm Vibration Meter Cable (for Types 4500 and 4501) INCLUDED ACCESSORIES AO 0339: Low-Noise Cable (for Type 4505: Accelerometer Types 4500 and 4501)
  • Page 70 Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...

  • Page 71: Chapter 7 Quick Reference

    Chapter 7 Quick Reference BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...

  • Page 72: The Measurement Window

    ) and overload indicator (when showing “ OVL ” or blinking, see section 3.3.3 for more information about overloads) Battery level (see section 2.2.1) Run/Stop indicator Elapsed time Peak parameter Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...

  • Page 73: Displayed Parameters

    The minimum RMS acceleration that occurred dur- ing the measurement period. The four-hour energy equivalent RMS acceleration. The eight-hour energy equivalent RMS acceleration. Peak The maximum peak over the last 1 s interval. BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...
  • Page 74 Measures with a linear (unweighted) response. The vi- bration meter will be equally sensitive to all frequencies from 6.3 Hz to 5 kHz. Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...
  • Page 75 ---- m/ss H Amax ---- m/ss H Aeq8 ---- m/ss STOP 00:00:00 STOP 00:00:00 ---- m/ss ---- m/ss H Aeq ---- m/ss H Aeq4 ---- m/ss Fig.7.2 Displayed parameter flowchart BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...

  • Page 76: Set-Up Functions Flow Chart

    H Aeq4 ---- m/ss To Save Changes To Cancel Changes SET-UP Freq. Weighting From Fig.7.4 >HA SET-UP Preset Time To Fig.7.4 >10 s Fig.7.3 Set-up functions flowchart, part 1 Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...
  • Page 77 H Aeq4 ---- m/ss SET-UP Date/Time 04 Jan 1996 >22:15:02 SET-UP Date/Time 04 Jan 1996 22>15:02 SET-UP Date/Time 04 Jan 1996 To Fig.7.3 22:15>02 Fig.7.4 Set-up functions flowchart, part 2 BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...

  • Page 78: Measurement Range Flow Chart

    Refer to section 3.5.1 for more information. STOP 00:00:00 ---- m/ss H Aeq4 ---- m/ss STOP 00:00:00 ---- m/ss H Aeq4 ---- m/ss Fig.7.5 Measurement Range flowchart Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...

  • Page 79: Data Functions Flow Chart

    If there are no stored records and the buffer is empty, then the following warning message will appear when you press *** WARNING **** No Data Available Fig.7.6 The no data available warning BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...
  • Page 80 To Fig.7.8 Display OUTPUT Current Measurement to Printer OUTPUT Stored Records (2x) To Erase Records Spreadsheet To Cancel ERASE Record No. n ERASE Records Fig.7.7 Data functions flowchart, part 1 Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...
  • Page 81 To display 10 Jun 15:00:45 the next Elapsed 01:00:00 parameter of this record H Aeq 7.26 m/ss STOP00:00:00 Amp---- m/ss H Aeq4---- m/ss Fig.7.8 Data functions flowchart, part 2 BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...
  • Page 82 Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...

  • Page 83: Index

    ........9 battery indicator EMC immunity ......... 64 ..........27 range values Environmental effects ......64 ......27 recalled parameters Brüel & Kjær Software ......51 Erase Buffer ............5 ..........44 all records BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...
  • Page 84 No data available ........59 .........41 recalling to screen No free records ......40, 59 ...........38 saving Repair ............56 RMS value parameters ......16 Optional accessories ......65 Run/Stop indicator .........16 Type 2239 B Brüel & Kjær Hand-Arm Vibration Functions User Manual...
  • Page 85 Specifications ..........62 Storage .............56 Switching Between Sound and Vibration Functions ..........8 Third party software ......52 Troubleshooting ........57 Under range ........24, 25 Warning messages ........58 Weighting ..........16 Weightings ..........70 BB1224 – 11 Type 2239 B Hand-Arm Vibration Functions User Manual...

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