sewerin Stethophon 04 User manual

Operating
Instructions
Stethophon
® 0
4

Measurable success by Sewerin equipment
Congratulations. You have chosen a quality instrument manufactured
by Hermann Sewerin GmbH.
Our equipment will provide you with the highest standards of perform-
ance, safety and efciency. They correspond with the national and in-
ternational guide-lines.
Please read and understand the following operating instructions before
using the equipment; they will help you to use the instrument quickly and
competently. If you have any queries we are available to offer advice
and assistance at any time.
Yours
Hermann Sewerin GmbH
Robert-Bosch-Straße 3
33334 Gütersloh, Germany
Tel.: [phone]
Fax: [phone]
www.sewerin.com
[e-mail]
Sewerin USA LLC
2835 Haddoneld Road
Pennsauken, NJ 08110-1108
Phone: [phone]
Fax: [phone]
www.sewerin.net
[e-mail]
SEWERIN SARL
17, rue Ampère – BP 211
67727 Hoerdt Cedex, France
Tél. : [phone]
Fax : [phone]
www.sewerin.fr
[e-mail]
Sewerin Ltd
Hertfordshire
UK
Phone: [phone]
www.sewerin.co.uk
[e-mail]
SEWERIN IBERIA S.L.
Centro de Negocios Eisenhower
Avenida Sur del Aeropuerto
de Barajas 24, Ed. 5 Of. 2C
28042 Madrid, España
Tel.: [phone]
Fax: [phone]
www.sewerin.es
[e-mail]
Sewerin Sp.z o.o.
ul. Annopol 3
03-236 Warszawa, Polska
Tel.: [phone]
Faks: [phone]
Tel. kom.+48 501 879 444
[phone]
www.sewerin.com
[email protected]

Stethophon 04 illustrated – Device structure
Probe tip
zfor recording vibrations
zremovable
Headphone socket
Microphone socket
zfor connecting an external microphone
Display
Loudspeaker key
zstart/stop measurement
zswitch off noise
Arrow-up key
zincrease volume, lter level, values in normal
settings
Arrow-down key
zreduce volume, lter level, values in normal
settings
Filter key
zchange lter level
ON/OFF key
zswitch device on/off
Bar
zfor attaching carrying strap

Measured value (current minimum sound level)
Volume, also: frequency range
zmissing segment indicates selected volume /
visible segments indicate bandpass frequency
range
Status message, also: menu item /last
measured value /lter level
Filter symbol
zlter level can be changed
Loudspeaker symbol (crossed out)
zready to measure
znoise switched off
Battery symbol
zcurrent battery capacity; the more segments that
are visible, the higher the remaining capacity
available
Note:
All of the gures (with the exception of zero) in the illustrated displays
are examples. You will generally obtain other values when working with
the device.
Abbreviations:
Status message/
menu item
Abbreviation for See
APF Auto Power Off Section 3.5
BAT Battery Section 3.5
END End Section 5
LDS Loudspeaker Section 5.2
LED Light emitting diode (display illumination) Section 5.2
LOC Lock (lter key) Section 5.2
MIC Microphone (external) Section 4.3.2
PRO Protect (hearing protection threshold value) Section 5.2
RES Reset Section 5.2
SET Setup Section 5.1
VOL Volume (hearing protection) Section 5.2
Display illustration – Description of symbols and abbreviations

Operating Instructions
22.07.2013 – V3.XX –104854 – en
Stethophon® 04

Symbol explanation
CAUTION!
This symbol is used to indicate dangers which may
either result in hazards for the operators or in severe
damage – or even destruction – of the product.
Note:
This symbol is used to call attention to information
and tips which may be helpful and which are exceed-
ing the basic operating procedures.

I
Contents Page
1 Introduction .............................................................................1
2 General.....................................................................................2
2.1 Warranty....................................................................................2
2.2 Intended use .............................................................................3
2.3 Safety information .....................................................................3
3 Useful information about the device .....................................4
3.1 Models.......................................................................................4
3.2 Structure....................................................................................4
3.3 Modes of operation ...................................................................5
3.4 Reset.........................................................................................5
3.5 Listening to noise .....................................................................6
3.5.1 Adjusting the volume .............................................................7
3.5.2 Automatic hearing protection .................................................8
3.5.3 Switching off the noise ...........................................................9
3.6 Automatic shut down.................................................................9
3.7 Illumination of display..............................................................10
4 Measuring .............................................................................. 11
4.1 How to switch the device on (measuring mode) ..................... 11
4.2 How to measure ...................................................................... 11
4.2.1 What you need to know about the noise picked up..............13
4.2.2 What you need to know about the measured value
displayed ..............................................................................13
4.3 How to inuence the quality of the measurement result .........14
4.3.1 Changing the lter level .......................................................14
4.3.2 Using an external microphone ............................................17
4.3.3 Extending the probe tip ........................................................18
5 Normal settings .....................................................................19
5.1 How to use the normal settings...............................................19
5.2 What values can be adjusted? ................................................21
6 Maintenance and servicing ..................................................23
6.1 Overview .................................................................................23
6.2 Simple function test (troubleshooting).....................................23
6.3 Replacing disposable/rechargeable batteries .........................24

II
Contents Page
7 Appendix................................................................................25
7.1 Technical data .........................................................................25
7.2 Accessories.............................................................................26
7.3 EC Declaration of Conformity..................................................27
7.4 FCC Compliance Statements..................................................28
7.5 Advice on disposal ..................................................................29

1
1 Introduction
1 Introduction
The Stethophon 04 is an electroacoustic listening device used
to detect leaks.
The device's probe tip records the natural vibrations of the object
of examination. The Stethophon 04 displays a relative measure-
ment according to the internal amplication of the vibrations, and
emits the corresponding noise through the headphones.
Ranges of use:
zLeak detection in the water distribution network
zInspecting house service connections
zInspecting and pinpointing damage in compressed air sys-
tems
zTroubleshooting in heating and sanitation facilities in build-
ings
zBearing inspection on machines

2
2 General information
2 General
2.1 Warranty
The following instructions must be complied with in order for any
warranty to be applicable regarding functionality and safe opera-
tion of this equipment.
Hermann Sewerin GmbH accepts no liability for any damages
resulting from non-compliance with these instructions. The war-
ranty and liability provisions of the terms of sale and delivery of
Hermann Sewerin GmbH are not affected by the information
given below.
zThis product must only be operated after the relevant operating
instructions have been read and understood.
zThis product must only be used for its intended purpose.
zThis product is designed for use in industrial and commercial
applications.
zRepairs must only be carried out by the manufacturer or by
other suitably trained personnel.
zChanges or modications to this product must not be carried out
without approval from Hermann Sewerin GmbH. The manu-
facturer cannot be held responsible for damages if unapproved
modications have been made.
zOnly replacement parts that have been approved by
Hermann Sewerin GmbH may be used.
zOnly the specied battery types may be used.
zThe manufacturer reserves the right to make technical modi-
cations in the course of further development.
Generally applicable safety and accident-prevention regulations
must be complied with, in addition to the information provided in
this manual.

3
2 General information
2.2 Intended use
The Stethophon 04 is a sensitive measuring device. It may only
be used for listening to sounds.
The device is suitable for both indoor and outdoor use. There are
special accessories available for both applications to optimise
the measurement results and prevent operating errors. Please
contact our sales department for advice.
The manufacturer accepts no responsibility for any damage
or harm caused to persons or property as a result of improper
use.
2.3 Safety information
Risk of personal injury (health risk)
zYou could injure yourself or others with the tip of the device
probe. Handle the device carefully therefore when transporting
it and using it to measure.
zThe device has an automatic hearing protection function. How-
ever, only set the volume as loud as is necessary to analyse
the noise. Excessive noise can cause permanent damage to
hearing!
Risks to the device
zDo not drop the device. This could damage the internal mi-
crophone.
zNever open the housing (except the battery compartment).
Failure to observe the above instructions will invalidate the
warranty.
zTake extra care when handling the device if you use a probe
tip extension. The mechanical stress on the extended probe
tip can produce forces powerful enough to destroy the internal
microphone.
zNever lean on the device.
zNever use the probe tip as a lever for manual tasks.

4
3 Useful information about the device
3 Useful information about the device
3.1 Models
The Stethophon 04 is available with and without a radio mod-
ule.
Stethophon 04 with radio module
Devices featuring a radio module feature an SDR
sticker (SDR = Sewerin Digital Radio).
The device can be used either with the F5 wireless headphones
or with headphones without a radio module (e. g. K3 or S4 head-
phones).
Stethophon 04 without radio module
The device can only be used with headphones without a radio
module (e. g. K3 or S4 headphones).
CAUTION!
Correct recognition of the limit for the automatic
hearing protection function is only guaranteed if
SEWERIN's F5, K3 or S4 headphones are used.
3.2 Structure
Illustrations with
zall parts of the Stethophon 04 labelled and
zan explanation of the symbols/abbreviations on the display
are provided on the inside front cover.

5
3 Useful information about the device
3.3 Modes of operation
The device features two modes of operation:
zMeasuring > see Section 4
zNormal settings > see Section 5
It is not possible to switch directly to the normal settings from
measuring mode. You must rst switch the device off.
3.4 Reset
All the menu items in the normal settings are set to "0". The lter
level is "5".

6
3 Useful information about the device
3.5 Listening to noise
The main purpose of the Stethophon 04 is for listening to noise.
The device is therefore almost always used with headphones.
The minimum sound level shown in the display should conrm
the results heard. These digital measurement values alone may
not provide enough information in certain situations.
Note:
Inexperienced users are advised to practise listen-
ing (see below) to allow them to use the device ef-
fectively after a short period of training.
Even though listening is more important than reading off the meas-
urement values, these operating instructions focus in particular
on the information shown in the display. This is simply because
the visible changes can be explained in greater detail than the
audible ones.
There is a volume setting for picking up the noise (see Section
3.4.1).
If the noise becomes so loud that it poses a health risk to the user,
the sound will be switched off automatically (see Section 3.4.2).
Practising listening
Practise listening, for example, on an exposed water pipe
with a tap. Learn to distinguish the sound of ows of different
strength.
zFirst listen to what it sounds like when the water tap is closed
by placing the probe tip on the water pipe and measuring as
explained in Section 4.
zThen listen to the noise when the water tap is open. Take your
measurement at the same spot as before.
zCompare the two noises.
Another readily available practice object is a radiator with adjust-
able thermostat (difference between closed/open thermostat).

7
3 Useful information about the device
3.5.1 Adjusting the volume
The missing segment in the volume display indicates the selected
volume.
zloud
zquiet
Changing the volume
Action What happens?
Hold down Noise gets louder
OR
Hold down Noise gets quieter
Release key Selected volume will be saved
The volume can also be changed during a measurement.

8
3 Useful information about the device
3.5.2 Automatic hearing protection
The device features automatic hearing protection. If the noise
picked up exceeds a certain limit, it will be switched off to protect
the user.
CAUTION!
Correct recognition of the limit for the automatic
hearing protection function is only guaranteed if
SEWERIN's F5, K3 or S4 headphones are used.
The limit for activation of automatic hearing protection is set in
the normal settings under PRO. The automatic hearing protection
function can be disabled.
How automatic hearing protection works
zYou measure.
zThe current minimum sound level of the measurement exceeds
the dened limit.
zThe noise is switched off. The loudspeaker symbol will appear
crossed out in the display.
How to continue listening
zContinue without stopping the measurement. Once the mini-
mum sound level falls below the limit in the course of the meas-
urement, the noise will become audible again.
OR
zStop the measurement. Reduce the volume.

9
3 Useful information about the device
3.5.3 Switching off the noise
As soon as you put on the headphones, you will hear continuous
noise. This can be switched off between two measurements to
protect your hearing.
Switching noise off/on
Action What happens? / Why? Information
in display
1.
Press
zNoise will be switched off
zLoudspeaker symbol will
appear
2.
Press
zNoise audible again
zLoudspeaker symbol
hidden
Note:
The loudspeaker key also starts and stops meas-
urements. This means that if you do not wish to
hear noise during a measurement, you will have to
remove the headphones.
3.6 Automatic shut down
The Stethophon 04 switches off automatically
zif there is insufcient battery power.
(BAT will appear briey in the display.)
In some cases this may also happen immediately after switch-
ing the device on! Replace/recharge the batteries (see Sec-
tion 6.3).
zif the device has not been used for 10 mins (no key pressed)
or there has been no change in the display. (APF will appear
briey in the display.)
The automatic shut down function does not work when a micro-
phone is plugged in.

10
3 Useful information about the device
3.7 Illumination of display
The device display automatically illuminates when any key is
pressed (stays lit for 20 s).
Note:
The automatic display illumination function can be
locked (see Section 5.2).

11
4 Measuring
4 Measuring
4.1 How to switch the device on (measuring mode)
Switching the device on (measuring mode)
Action What happens? / Why? Information
in display
1.
Press
approx. 2 s
zThe device switches on
2. Wait zinternal power supply veri-
cation: disposable or re-
chargeable battery
3. zBattery symbol appears
zDevice ready to start meas-
uring
4.2 How to measure
The device is switched on (see Section 4.1).
zEstablish a radio/electric connection between the headphones
and device.
Wireless headphones
−Press the ON button on the headphones.
The green LED on the headphones will illuminate. The radio
connection will be established automatically.
Headphones without radio module
−Plug the cable of the headphones into the headphone
socket.
zPlace the headphones on your head.
CAUTION!
Wearing headphones impairs your perception of
ambient noise. Pay extra attention therefore when
in dangerous surroundings (e. g. trafc).

12
4 Measuring
Note:
When using the wireless headphones please ensure
that you do not move too far away from the device
and that you stay within the radio range.
Measuring
Action What happens? / Why? Information
in display
1.
Press
zDevice is preparing
for measurement
zNoise switched off
2. Place probe tip on
object of examina-
tion (see note be-
low)
3.
Press
zThe measurement
starts
zCurrent minimum
sound level counts
down
zNoise switches on
4. Wait until the
measurement rests
at a constant value
5.
Press
zMeasurement com-
plete
zMeasurement result
in example on right:
minimum sound lev-
el = 361
zNoise switched off