CASELLA CEL CEL-63 Series User manual

CEL-63x Environmental &
Occupational Noise Meter
HB3356-03
User Manual
CASELLA MEASUREMENT
Regent House,
Wolseley Road,
Kempston,
Bedford,
MK42 7JY, U.K.
Phone: [phone]
Fax: [phone]
E-mail: [email protected]
Web: www.casellameasurement.com
User Manual

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Contents
Contents......................................................................................................................................2
1Introduction...................................................................................................................5
1.1 Structure of this User Manual .......................................................................................... 5
Colour coding .................................................................................................................... 6
1.2 Safety ................................................................................................................................ 7
2Features ........................................................................................................................9
3Quick reference ........................................................................................................... 10
3.1 Powering the instrument ................................................................................................ 10
Battery supply ................................................................................................................. 10
How to fit new batteries ................................................................................................. 10
Mains DC supply ..............................................................................................................11
USB supply ....................................................................................................................... 11
Battery condition indicator .............................................................................................. 11
3.2 Using the controls........................................................................................................... 12
Soft keys.......................................................................................................................... 12
Navigation keys............................................................................................................... 12
Run/Stop key ................................................................................................................... 12
3.3 Set the time and date .................................................................................................... 13
3.4 Calibrating the instrument.............................................................................................. 13
3.5 Making a measurement run............................................................................................ 16
Measurement view .......................................................................................................... 16
Measurement controls..................................................................................................... 18
Measurement data sets................................................................................................... 21
4Detailed description ....................................................................................................24
4.1 Microphone and pre-amplifier ........................................................................................ 24
4.2 User controls................................................................................................................... 24
Soft keys.......................................................................................................................... 24
Navigation keys............................................................................................................... 25
Run/Stop key ................................................................................................................... 25
4.3 Screen groups................................................................................................................. 25
Switch-on......................................................................................................................... 26
Status .............................................................................................................................. 27

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Measurement stop screen............................................................................................... 27
Calibration mode............................................................................................................. 29
Measurement run screens............................................................................................... 31
Menu screens .................................................................................................................. 33
USB connect mode.......................................................................................................... 47
4.4 Measurement views ........................................................................................................ 48
User settings.................................................................................................................... 48
Measurement functions................................................................................................... 50
4.5 Connections .................................................................................................................... 55
Power input port ............................................................................................................. 55
Mini B USB port .............................................................................................................. 55
AC and DC output port ................................................................................................... 56
5Mode Selection (SLM, Online, NNR) ............................................................................57
5.1 General............................................................................................................................ 57
5.2 SLM Mode ....................................................................................................................... 57
5.3 Online Mode ................................................................................................................... 57
5.4 NNR Mode....................................................................................................................... 57
6Specifications..............................................................................................................59
6.1 General............................................................................................................................ 59
6.2 Standards........................................................................................................................ 59
6.3 Measurement range ........................................................................................................ 60
6.4 RMS frequency weightings ............................................................................................. 60
6.5 Octave and 1/3-Octave measurement............................................................................. 60
6.6 Peak measurement ......................................................................................................... 60
6.7 RMS detector .................................................................................................................. 60
6.8 Noise floor ...................................................................................................................... 60
6.9 Frequency response........................................................................................................ 60
6.10 Time weightings.............................................................................................................. 61
6.11 Correction filters ............................................................................................................. 61
6.12 Reference direction......................................................................................................... 61
6.13 Reference conditions ...................................................................................................... 61
6.14 Operating environmental conditions.............................................................................. 61
6.15 Effects of temperature .................................................................................................... 61
6.16 Effects of humidity.......................................................................................................... 61

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6.17 Storage environmental conditions ................................................................................. 61
6.18 Microphones ................................................................................................................... 62
6.19 Calibration....................................................................................................................... 62
6.20 Power supply .................................................................................................................. 62
6.21 Internal clock .................................................................................................................. 62
6.22 Languages....................................................................................................................... 62
6.23 Electromagnetic compatibility ........................................................................................ 63
6.24 Effects of AC power frequency fields ............................................................................. 63
6.25 Tripod mounting ............................................................................................................. 63
6.26 Display ............................................................................................................................ 63
6.27 Memory ........................................................................................................................... 63
6.28 Connectivity .................................................................................................................... 63
6.29 Available data sets .........................................................................................................64
6.30 Physical ........................................................................................................................... 67
7Care and maintenance.................................................................................................68
8Servicing and Warranty arrangements ........................................................................69
8.1 Inspection and test......................................................................................................... 69
8.2 Lifetime Warranty Terms and Conditions.......................................................................69
8.3 Repairs ............................................................................................................................ 70
8.4 User servicing.................................................................................................................. 71
9Glossary ......................................................................................................................72
10 Additional information.................................................................................................75
10.1 Sound calibrators –Level corrections............................................................................ 78
10.2 Response characteristics ................................................................................................ 79
10.3 Data and Protocols for Online Mode .............................................................................83

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1Introduction
The CEL-63x series is a family of noise meters (where „x‟ is a digit that indicates
the model variant –see Figure 14 on page 59). These are powerful
measurement tools to support a wide range of industrial, health and safety, and
environmental noise measurement requirements.
For a breakdown of the different models and their functionality, refer to
section 6 Specifications beginning on page 59.
The CEL-63x instrument uses the latest digital signal processing technology to
provide a full range of functions, including integrating and real-time octave and
1/3-octave band analysis.
The CEL-63x instrument uses a colour TFT screen to show a range of
information, including operating menus and messages, warnings, and the
results of measurements. The screen is clear and easy to read under all ambient
lighting conditions, including total darkness.
Measurements captured by the CEL-63x instrument conform to international
standards for acoustic measurement. The measurements are saved
automatically in high-capacity internal Flash memory. You can transfer the
measurement results to a PC where you can manage the results and create
reports by using the Casella insight data management software.
Audio recording is available on all CEL-63X models. Audio notes are available
on all models to allow annotation of measurements. On CEL-632 and CEL-633
models, audio can be stored with data markers or for events triggered by a
specific parameter e.g. Leq.
1.1 Structure of this User Manual
The structure of this User Manual is designed to help you find the information
and instructions you need to complete a task easily. Refer to section 3 Quick
reference on page 10 for instructions to use the CEL-63x instrument.
If you need more information about any of the CEL-63x instrument‟s controls,
screens and features, then you should read the section 244 called Detailed
description, which begins on page 24.
To help you find the information you need quickly in the electronic version of
this User Manual, it includes „clickable‟ links. The links appear as blue
underlined text. You can also click the names of chapters and sections in the
bookmark panel, and in the table of contents, to jump to that part of the
manual.

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Colour coding
The CEL-63x instrument‟s screens use a colour code to help you identify their
purpose quickly. This manual uses the same colour codes. Refer to section 4.3
“Screen groups” beginning on page 25 for more information.
This colour…
indicates…
Cyan
Memory results screens
Green
Measurement run screens
Red
Measurement stop screens
Yellow
Calibration mode
Blue
Menu screens
Grey
USB connection mode

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1.2 Safety
The CEL-63x instrument does not present a safety risk when you use it as
instructed in this User Manual. However, it is possible that the environment
where you use the instrument may present a safety risk, and you must ALWAYS
follow correct, safe working practices.
WARNING
Always be aware of the risks in the environment where you are working.
The CEL-63x instrument is NOT intrinsically safe. DO NOT use it in an
atmosphere where explosive vapours or dusts might exist.
Wear approved ear defenders when making measurements in noisy
environments.
Wear approved protective clothing and footwear suitable for the environment
where you are making measurements.
Always follow local safety regulations, and be aware of risks in the area where
you are working.
CAUTION
Use the CEL-63x instrument only as instructed in this User Manual. Do not use the
instrument for any purposes for which it has not been designed.
CAUTION
The CEL-63x is a precision instrument. Always handle it with care.
Do not use the CEL-63x instrument if it has been damaged. Refer to section 8 Servicing
and Warranty arrangements on page 69 for instructions to follow if the instrument has
been damaged or has developed a fault.

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CAUTION
The CEL-63x instrument can operate from a battery power supply.
Use only batteries of the correct type, and do not mix battery types in the
instrument. Refer to “Battery supply”on page 10 for advice about battery types.
Do not try to charge non-rechargeable batteries.
Do not leave discharged batteries in the CEL-63x instrument.
Install new batteries as a complete set. Do not fit batteries that have a mixed
state of charge. Refer to “How to fit new batteries”on page 10 for instructions to
install batteries.
Remove all batteries from the CEL-63x instrument if you will not use the
instrument for a long time.
Always follow local regulations to dispose of used batteries.
CAUTION
The CEL-63x instrument is not waterproof. Do not immerse the instrument in water or
use it in the rain.

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2Features
Figure 1 shows the main features of the CEL-63x instrument. Refer to Figure 1
when you perform the tasks and instructions in this User Manual.
Figure 1. Main features of the CEL-63x sound level meter
1. Windshield (to cover the removable microphone)
2. Pre-amplifier (removable –pull the knurled body of the pre-amplifier
connector away from the instrument body)
When you attach the pre-amplifier to the instrument, make certain the
red dot faces towards the front of the instrument.
3. ON/OFF key
4. Display screen
5. Soft keys
6. Navigation keys
7. Run/Stop key
Refer to section 4.2 “User controls” on page 24 for a description of the Soft
keys, of the Navigation keys, and of the Run/Stop key.

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3Quick reference
3.1 Powering the instrument
The options for powering the instrument are as follows:
Batteries
12 V DC adaptor (part number -PC18)
USB connection (part number -CMC51)
Battery supply
You can use alkaline or rechargeable AA batteries to operate the instrument. Do
not use a mixture of alkaline and rechargeable batteries at the same time.
The operating time that you can expect from a fully charged or new set of
batteries depends on the battery capacity and whether you use the instrument‟s
backlight. Environmental conditions such as the ambient temperature also
affect battery life. See section 6 “Specifications” beginning on page 59 for some
typical battery life examples.
You should also carry a spare set of batteries.
IMPORTANT
To save power when operating on batteries, the CEL-63x instrument switches OFF
automatically if no measurement run is in progress and there is no key-press activity
for five minutes.
You should operate the instrument on a mains DC power supply if you must leave it
unattended while making an extended measurement run. The instrument does NOT
switch off automatically when it operates from a mains DC supply.
How to fit new batteries
Before you begin:
Read the caution notice about Batteries on page 8.
You should check that the batteries have adequate battery life before you begin
a measurement. Replacement batteries should be new or fully charged.