BRUEL & KJAER 2537 User manual

August 1998
Brüel & Kjær BB1073–11
Hand-Arm Vibration Meter
Type 2537
From serial no. 2002521

0–2 Brüel & KjærHand-Arm Vibration Meter Type 2537
User Manual
Trademarks
IBM is a registered trademark of International Business Machines
Inc., USA
Copyright  1998, Brüel &Kjær Sound and Vibration Measurement A/S
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.

BB1073–11 0–3 Hand-Arm Vibration Meter Type 2537
User Manual
4
1
Contents
About this manual and the Type 2537. Terminology.
Basic introduction to the instrument: replacing batteries, using the
buttons, reading the screen, and setting the language.
How to use the Type 2537: calibrating, taking a measurement,
reading the display, and changing the set-up.
Saving and recalling measurement results, printing results,
transferring results to a computer, using the AC output.
Caring for your instrument.
Warnings and error messages.
Complete specifications for the Type 2537.
Overviews of parameters, menus and functions.
Introduction
2
Getting Started
3
Taking Measurements
Data Operations
5
Maintenance & Troubleshooting
6
Specifications
7
Quick Reference
8
Index

BB1073–11 1–1 Hand-Arm Vibration Meter Type 2537
User Manual
Chapter 1
Introduction
1.1 About this Manual.............................................................. 1–2
Summary of Contents........................................................ 1 – 2
Conventions Used in this Manual .................................... 1 – 2
1.2 Features................................................................................... 1 – 3
1.3 Parameters............................................................................. 1 – 4
1.4 Settings .................................................................................... 1 – 4
1.5 Memory .................................................................................... 1 – 5
Set-up Memory .................................................................. 1 – 5
Buffer ................................................................................. 1 – 5
Records............................................................................... 1 – 5
1.6 Backlight ................................................................................. 1 – 6

Chapter 1 – Introduction
About this Manual
1–2 Brüel & KjærHand-Arm Vibration Meter Type 2537
User Manual
1.1 About this Manual
1.1.1 Summary of Contents
●Chapter 1 — Introduction: provides a general overview
of the instrument and its functions.
●Chapter 2 — Getting Started: provides basic informa-
tion including: replacing batteries, using the buttons,
reading the screen, and setting the language.
●Chapter 3 — Taking Measurements: gives instruc-
tions for calibrating and measuring with the Type 2537.
●Chapter 4 — Data Operations: contains information
and instructions about using the data functions and AC
output, including: saving, viewing, and erasing records;
downloading records; printing measurements; and record-
ing to DAT.
●Chapter 5 — Maintenance and Troubleshooting:
gives care, cleaning and storage instructions, and a table
of error messages together with their causes and solutions.
●Chapter 6 — Specifications: a comprehensive listing
of technical specifications for the Type 2537.
●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
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.
Text that refers directly to text on the instrument’s screen or
printouts is indicated using a Courier type face.
For example, “Press until Aeq is visible on the screen.”

Chapter 1 – Introduction
Features
BB1073–11 1–3 Hand-Arm Vibration Meter Type 2537
User Manual
1.2 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)
●Easy to read display with backlight
●Preset measurement time up to eight hours
●Storage of up to 40 records (see below)
●Serial port for printing or downloading records to a com-
puter
●Records can be downloaded in a standard spreadsheet
format
●AC output for DAT recording
●Five built-in languages

Chapter 1 – Introduction
Parameters
1–4 Brüel & KjærHand-Arm Vibration Meter Type 2537
User Manual
1.3 Parameters
The following parameters are monitored during measurement
and can be viewed selectively:
●Amp
●Amin
●Amax
●Aeq
●Aeq4
●Aeq8
●Peak
●Inst
You can change the displayed parameters during measure-
ment by pressing the key. For more information about
selecting and reading the parameters, see section 3.4.
1.4 Settings
The following settings are available:
●Measurement range
●Frequency weighting
●Preset time
●Time and date
You can change the measurement range by pressing the
key. You can change the other settings through windows that
are displayed when you press the key. 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.

Chapter 1 – Introduction
Memory
BB1073–11 1–5 Hand-Arm Vibration Meter Type 2537
User Manual
1.5 Memory
The vibration meter has three kinds of memory
●Set-up
●Buffer
●Records
1.5.1 Set-up Memory
The set-up memory is used to store the date and time, last
settings used, and the language selection. This memory is
maintained by the backup battery, so it is saved when you
turn off the instrument. The date and time are stored directly
in the real time clock, which is also powered by the backup
battery.
1.5.2 Buffer
Holds all of the results from the last measurement. It is
cleared each time you start a measurement or turn off the
instrument. Results in the buffer can be output to a printer
or copied into a record.
1.5.3 Records
Up to 40 records of measurement results can be stored in
memory. Records are copied from the buffer. They can be
stored automatically (after a preset-timed measurement) or
manually (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.

Chapter 1 – Introduction
Backlight
1–6 Brüel & KjærHand-Arm Vibration Meter Type 2537
User Manual
The following parameters are stored in each record:
●Aeq
●Aeq4
●Aeq8
●Amp
●Amin
●Amax
●Frequency weighting
●Time and date of measurement
●Measurement duration
●Overload status
The following data functions are available via windows that
are displayed when you press the key:
●Save the buffer to a record
●Recall a record to the screen
●Print results of the last measurement
●Download spreadsheet data of records
●Erase last record
●Erase all records
For more information about records, see section 4.1.
1.6 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.