BRUEL & KJAER 2537 Manual
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BRUEL & KJAER 2537 Manual

Hand-arm vibration meter
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Hand-Arm Vibration Meter
Type 2537
From serial no. 2002 521
August 1998
Brüel & Kjær
BB1073 – 11

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Summary of Contents for BRUEL & KJAER 2537

  • Page 1 Hand-Arm Vibration Meter Type 2537 From serial no. 2002 521 August 1998 Brüel & Kjær BB1073 – 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 Sound and Vibration Measurement A/S, Nærum, Denmark. 0 – 2 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...
  • Page 3 Basic introduction to the instrument: replacing batteries, using the buttons, reading the screen, and setting the language. Taking Measurements How to use the Type 2537: calibrating, taking a measurement, reading the display, and changing the set-up. Data Operations Saving and recalling measurement results, printing results, transferring results to a computer, using the AC output.

  • Page 5: Table Of Contents

    ..................1 – 4 Memory ..................1 – 5 Set-up Memory ..............1 – 5 Buffer ................. 1 – 5 Records ................1 – 5 Backlight ................. 1 – 6 BB1073– 11 Hand-Arm Vibration Meter Type 2537 1 – 1 User Manual...

  • Page 6: About This Manual

    Chapter 8 — Index 1.1.2 Conventions Used in this Manual All references to buttons on the Type 2537 are shown with the button’s pictogram as it appears on the instrument. Refer to section 2.2 for a complete list of button pictograms and their functions.

  • Page 7: Features

    Chapter 1 – Introduction Features Features The Type 2537 contains several features that enable you to take and save hand-arm vibration measurements under a variety of conditions. Features include: Ease of use Two measurement ranges Eight measured parameters (see below)

  • Page 8: Parameters

    Settings can not be changed while the instrument is measuring. For more information about setting up the vibration meter for meas- urement, see section 3.5. 1 – 4 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...

  • Page 9: Memory

    (at any time after a measurement is stopped). 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. BB1073– 11 Hand-Arm Vibration Meter Type 2537 1 – 5 User Manual...

  • Page 10: Backlight

    Erase all records For more information about records, see section 4.1. Backlight The Type 2537 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.
  • Page 11 Replacing Batteries ............2 – 4 The Back-up Battery ............2 – 5 Pushkey Definitions ............2 – 6 The Measurement Window ..........2 – 8 Choosing the Language ..........2 – 10 BB1073– 11 Hand-Arm Vibration Meter Type 2537 2 – 1 User Manual...

  • Page 12: Fitting Batteries

    (at room temperature). When the indicator is blinking, there is less than one hour left. Under extreme cold or hot environments, the remaining time may be less. 2 – 2 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...
  • Page 13 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. BB1073– 11 Hand-Arm Vibration Meter Type 2537 2 – 3 User Manual...

  • Page 14: Replacing Batteries

    +/- orientation shown on the bot- tom of the battery compartment. Press the compartment lid back into place. Fig.2.3 The Type 2537 with the battery lid removed 2 – 4 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær...

  • Page 15: The Back-Up Battery

    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. BB1073– 11 Hand-Arm Vibration Meter Type 2537 2 – 5 User Manual...

  • Page 16: Pushkey Definitions

    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. 2 – 6 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...
  • Page 17 Measure- ment Window. Backlight Switches on or off the display’s back- light. To save batteries, the back- light switches off automatically after 30 seconds. BB1073– 11 Hand-Arm Vibration Meter Type 2537 2 – 7 User Manual...

  • Page 18: The Measurement Window

    (this is called a “latched overload”). To change the measurement range, press 2 – 8 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...
  • Page 19 L: Linear (6.3 Hz to 5 kHz) 10. RMS parameter: Shows the type of RMS reading dis- played (A , or Inst). Press to select the displayed parameters. 11. Value of the RMS parameter BB1073– 11 Hand-Arm Vibration Meter Type 2537 2 – 9 User Manual...

  • Page 20: Choosing The Language

    Chapter 2 – Getting Started Choosing the Language Choosing the Language The Type 2537 is fluent in five languages. Use the procedure below to choose the language used in the instrument’s display screen. If the vibration meter is on, then press to switch it off.
  • Page 21 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. BB1073– 11 Hand-Arm Vibration Meter Type 2537 2 – 11 User Manual...
  • Page 22 2 – 12 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...
  • Page 23 When to Calibrate ............. 3 – 2 Principle of Calibration ............. 3 – 2 Which Calibrators Can I Use? .......... 3 – 2 Calibrating the 2537 Controller ........3 – 3 Mounting the Accelerometer .......... 3 – 4 Taking Measurements ............

  • Page 24: Taking Measurements

    Chapter 3 – Taking Measurements Setting the Measurement Time........3 – 16 Setting the Time and Date..........3 – 17 3 – 2 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...

  • Page 25: Calibration

    The vibration meter can be calibrated with Brüel & Kjær Cal- ibration Exciter Type 4294 or any other certified vibration meter calibrator that emits a 159.2 Hz signal at 10 m/s BB1073– 11 Hand-Arm Vibration Meter Type 2537 3 – 3 User Manual...
  • Page 26 If an error message appears after you press , make sure that: the calibrator is switched on the accelerometer is correctly and securely attached to the calibrator. the calibrator’s batteries are fully charged 3 – 4 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...

  • Page 27: Mounting The Accelerometer

    Brüel & Kjær dealer. Also, see section 5.4. Mounting the Accelerometer The Type 2537 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 28: Taking Measurements

    (check the measurement range on the screen as shown in Fig. 3.2). Begin a new measurement by pressing and repeat from step 4. 3 – 6 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...
  • Page 29 If there are no records left, then you will see a warning on your screen (see section 4.1.2 for more information). BB1073– 11 Hand-Arm Vibration Meter Type 2537 3 – 7 User Manual...

  • Page 30: Taking Preset-Timed Measurements

    Fig. 3.2). You may want to erase the last record of the under ranged measurement as de- scribed in section 4.1.4. Begin a new measurement by pressing and repeat from step 4. 3 – 8 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...

  • Page 31: Overload Conditions

    (as described above). Thereafter, the upper limit of the measurement range will blink until a new measurement is started. BB1073– 11 Hand-Arm Vibration Meter Type 2537 3 – 9 User Manual...
  • Page 32 Spreadsheet results have a special overload column in which overloads are indicated with “ ”, for yes (or the equivalent for language settings other than English). 3 – 10 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...

  • Page 33: 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. BB1073– 11 Hand-Arm Vibration Meter Type 2537 3 – 11 User Manual...

  • Page 34: Frequency Weighting Effects

    Hand-held tools produce vibrations chiefly in the hands and arms of their users, which are most sensitive to vibrations in the range of 12 Hz to 16 Hz. The Type 2537 includes a hand-arm vibration weighting, which makes the instrument most sensitive to vibrations in this frequency range.

  • Page 35: Making Measurement Settings

    In some cases, you may want to use a linear setting. You may need this to conform with some local regulations or for use in research literature (as a supplement). The Type 2537 in- cludes a linear setting, which removes the hand-arm vibration filter.

  • Page 36: Setting The Measurement Range

    If the display ever becomes full and the value for the upper limit of the measurement range changes to read “ ”, 3 – 14 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...

  • Page 37: Setting The Frequency Weighting

    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. BB1073– 11 Hand-Arm Vibration Meter Type 2537 3 – 15 User Manual...
  • Page 38 Making Measurement Settings 3.5.3 Setting the Measurement Time The Type 2537 can be set to measure for a fixed amount of time. When the set time has elapsed, measurement is stopped automatically and the results are stored in the next available record (except when the off (manual) setting is used).
  • Page 39 The Measurement Window must read (as shown STOP in Fig. 3.8), not Press until the Date/Time Set-up Window is visible on the screen, as shown in Fig. 3.10. BB1073– 11 Hand-Arm Vibration Meter Type 2537 3 – 17 User Manual...
  • Page 40 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. 3 – 18 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...
  • Page 41 Transferring Results with Third Party Software ..4 – 16 Using the AC Output ............4 – 17 To Record Measurements to a DAT........ 4 – 17 BB1073 – 11 Hand-Arm Vibration Meter Type 2537 4 – 1 User Manual...

  • Page 42: Working With Records

    Working with Records Working with Records The Type 2537 is capable of saving up to 40 records of meas- ured results. This enables you to take several readings at different locations or at different times of day and store each one for future reference.
  • Page 43 4). You will then return to the Measurement Window. If you wish to cancel the operation rather than store the record, press return to the Measurement Window. BB1073– 11 Hand-Arm Vibration Meter Type 2537 4 – 3 User Manual...

  • Page 44: When All Records Are Full

    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). 4 – 4 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...

  • Page 45: Recalling A Stored Record

    Fig. 4.5. Note that if an overload occurred during the measurement, then the value for each parameter will blink. BB1073– 11 Hand-Arm Vibration Meter Type 2537 4 – 5 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. 4 – 6 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...

  • Page 47: Erasing Records

    . 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. BB1073– 11 Hand-Arm Vibration Meter Type 2537 4 – 7 User Manual...
  • Page 48 Fig. 4.11 will appear to make sure you have not made a mistake. 4 – 8 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...
  • Page 49 Fig.4.11 The Erase All Records Warning If you mean to erase all records, press again. Oth- erwise, press to leave all records stored and return to the Measurement Window. BB1073– 11 Hand-Arm Vibration Meter Type 2537 4 – 9 User Manual...

  • Page 50: Using A Portable Printer

    Chapter 4 – Data Operations Using a Portable Printer Using a Portable Printer The Type 2537 includes a standard serial port interface. It is designed to work with portable serial printers. Contact your Brüel & Kjær dealer for more information about printers recommended for use with the Type 2537.
  • Page 51 If you have not taken a measurement, then take a com- plete measurement as described in section 3.3. Make sure measurement has stopped before proceeding to the next step. BB1073– 11 Hand-Arm Vibration Meter Type 2537 4 – 11 User Manual...

  • Page 52: Reading The Printout

    Fig.4.13 The Print Measurement Window Press to begin printing. Press to cancel the operation. 4.2.2 Reading the Printout The Type 2537 generates a printout that supplies the follow- ing information: Frequency weighting Measurement range Date and time Elapsed time Overload status Sample printouts are shown in Fig.
  • Page 53 2.64 m/ss Fig.4.14 Print examples. In the example on the right an overload has occurred, which is indicated by the “Overload” label on the eighth line from the bottom BB1073– 11 Hand-Arm Vibration Meter Type 2537 4 – 13 User Manual...

  • Page 54: Transferring Records To A Computer

    Transferring Records to a Computer Transferring Records to a Computer The Type 2537 is capable of saving up to 40 records of meas- ured results. For more information about saving records, refer to section 4.1. All records can be downloaded to a computer in a standard spreadsheet format.

  • Page 55: Transferring Results With Brüel & Kjær Software

    If Brüel & Kjær communication software is not installed on your computer, then locate the diskette and follow the instructions given on the label. Connect the Type 2537 to your computer as described above. Start running the Brüel & Kjær communication software.

  • Page 56: Transferring Results With Third Party Software

    DOS-only machine), you may want to use communications software other than that included with your instrument. If so, follow the instructions below. Connect the Type 2537 to your computer as described in section 4.3.1. Start your communications software. Set your software’s communication parameters as follows:...

  • Page 57: Using The Ac Output

    Refer to your program’s user manual for instructions. Using the AC Output The Type 2537 includes an AC output port, which transmits vibration signals straight from the accelerometer’s input am- plifier. This is useful, for example, for recording the compete vibration signal to a DAT so you can bring samples back to a laboratory for further analysis.
  • Page 58 Begin recording on the DAT and use your vibration meter as usual. 10. If you intend to use an analyzer on the recording, then repeat step 8. 4 – 18 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...
  • Page 59 Storing the Instrument ............. 5 – 2 Cleaning the Instrument ..........5 – 2 Handling the instrument ..........5 – 3 Troubleshooting ..............5 – 3 Warnings and Error messages ........5 – 4 BB1073– 11 Hand-Arm Vibration Meter Type 2537 5 – 1 User Manual...

  • Page 60: Service And Repair

    Chapter 5 – Maintenance and Troubleshooting Service and Repair Service and Repair The Type 2537 is designed and constructed to provide many years of reliable operation. However, if a fault occurs that impairs the vibration meter’s correct function, then remove the batteries to prevent risk of further damage.

  • Page 61: Handling The Instrument

    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. BB1073– 11 Hand-Arm Vibration Meter Type 2537 5 – 3 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 2537, then refer to the chart below. Message Occurs Solution Wait for measure- If you press...
  • Page 63 If you press when Make and store there are no records measurements *** WARNING **** saved and the buffer is before using this No Data empty. function. Available BB1073– 11 Hand-Arm Vibration Meter Type 2537 5 – 5 User Manual...
  • Page 64 5 – 6 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...
  • Page 65 Chapter 6 Specifications Specifications ................. 6 – 2 Ordering Information ............6 – 4 BB1073– 11 Hand-Arm Vibration Meter Type 2537 6 – 1 User Manual...
  • Page 66 1 s exponential averaging of the instan- taneous RMS readings (Inst). A is the highest peak reading (Peak) 0.01 100k Frequency (Hz) 960562e Fig.6.1 Frequency response with linear frequency weighting 6 – 2 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...
  • Page 67 Size: 257 ×97 ×41 mm Factory set to CET. Weight: 460 g (incl. batteries) Warm-up Time: < 15s 0.01 0.001 0.0001 Frequency (Hz) 960561e Fig.6.2 Frequency response with hand-arm vibration weighting BB1073– 11 Hand-Arm Vibration Meter Type 2537 6 – 3 User Manual...
  • Page 68 AO 1386 9-pole Cable with 25-pole Adap- tor (for computer and serial printer) Brüel & Kjær reserves the right to change specifi- cations and accessories without notice. 6 – 4 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...
  • Page 69 Displayed Parameter Flowchart........7 – 5 Set-up Functions Flow Chart ......... 7 – 6 Measurement Range Flow Chart ......... 7 – 8 Data Functions Flow Chart ..........7 – 9 BB1073– 11 Hand-Arm Vibration Meter Type 2537 7 – 1 User Manual...

  • Page 70: The Measurement Window

    Battery level (see section 2.1.1) Run/Stop indicator Elapsed time Peak parameter (see section 7.2) Peak parameter value Frequency weighting 10. RMS parameter (see section 7.2) 11. Value of the RMS parameter 7 – 2 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...

  • Page 71: Displayed Parameters

    The eight-hour energy equivalent RMS accelera- tion. Peak The maximum peak over the last 1 s interval. Inst A randomly sampled instantaneous RMS accelera- tion over the last 1 s interval. BB1073– 11 Hand-Arm Vibration Meter Type 2537 7 – 3 User Manual...

  • Page 72: Possible Frequency Weightings

    Measures with a linear (unweighted) response. The vi- bration meter will be equally sensitive to all frequencies from 6.3 Hz to 5 kHz. 7 – 4 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...

  • Page 73: Displayed Parameter Flowchart

    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 flow chart BB1073– 11 Hand-Arm Vibration Meter Type 2537 7 – 5 User Manual...

  • Page 74: Set-Up Functions Flow Chart

    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 flow chart, part 1 7 – 6 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...
  • Page 75 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 flow chart, part 2 BB1073– 11 Hand-Arm Vibration Meter Type 2537 7 – 7 User Manual...

  • Page 76: 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 flow chart 7 – 8 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...

  • Page 77: 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 BB1073– 11 Hand-Arm Vibration Meter Type 2537 7 – 9 User Manual...
  • Page 78 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 flow chart, part 1 7 – 10 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...
  • Page 79 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 flow chart, part 2 BB1073– 11 Hand-Arm Vibration Meter Type 2537 7 – 11 User Manual...
  • Page 80 7 – 12 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...
  • Page 81 Calibration ............ 3 – 3 choosing a calibrator ....... 3 – 3 range values .......... 3 – 10 errors ..........3 – 4 5 – 4 recalled parameters ......3 – 10 BB1073– 11 Hand-Arm Vibration Meter Type 2537 Index – 1 User Manual...
  • Page 82 Aeq ..........3 –11 7 – 3 Aeq4 ..........3 –11 7 – 3 Third party software ........4 – 16 Aeq8 ..........3 –12 7 – 3 Troubleshooting ..........5 –3 Index – 2 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...
  • Page 83 Index Under range ......... 3 – 7 3 – 8 Warning messages ........5 – 4 Weighting ............2 – 9 Weightings ............ 7 – 4 BB1073– 11 Hand-Arm Vibration Meter Type 2537 Index – 3 User Manual...
  • Page 84 Index – 4 Hand-Arm Vibration Meter Type 2537 Brüel & Kjær User Manual...

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