sewerin Stethophon 04 Operating Instructions Manual
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sewerin Stethophon 04 Operating Instructions Manual

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Summary of Contents for sewerin Stethophon 04

  • Page 1 Operating Instructions...
  • Page 2 Measurable success by Sewerin equipment You settled on a precision instrument. A good choice! Our equipment stands out for guaranteed safety, optimal output and efficiency. They correspond with the national and international guide-lines. These operating instructions will help you to handle the instrument quickly and competently.
  • Page 3 Illustration Stethophon 04 – Setup Headphones socket Sensor tip for picking up the oscillations  can be unscrewed  Microphone socket for connecting an external micro-  phone Display Loudspeaker key start/stop measuring  turn off noise  Up-arrow key amplify volume, filter stage, values in ...
  • Page 4 Display – Explanation of the symbols and abbreviations Reading (current minimum level) Volume, also: frequency range Missing segment symbolises selected  volume or visible segments symbolise frequency range let through Status notification, also: menu item / last reading / filter stage Filter symbol Filter stage can be changed ...
  • Page 5 Operating Instructions Stethophon® 04 30.07.2006 – 104854 – en...
  • Page 6 To ensure reliable operation and safety, it is required to pay attention to the following notes. Hermann Sewerin GmbH is not liable for damage caused by failure to comply with these notes. The guarantee and liability conditions of the sales and delivery conditions of Hermann Sewerin GmbH are not extended by the following notes.

  • Page 7: Table Of Contents

    Contents Page Intended purpose ..............1 Safety instructions ..............2 Things worth knowing about the device .......3 Setup ..................3 Operative ranges ...............3 Factory settings .................3 Hearing noises ................4 3.4.1 Setting the volume ..............5 3.4.2 Automatic hearing protector ...........6 3.4.3 Turn off noise .................6 Automatic switchoff ..............7 Display illumination ..............7 Measuring ................8...

  • Page 8: Intended Purpose

    The device’s sensor tip picks up the intrinsic oscillations of the object of investigation. Following internal oscillation strengthen- ing, the Stethophon 04 displays a relative reading and emits the attendant noise via the headphones. Fields of use: Detecting leaks in the water distribution network ...

  • Page 9: Safety Instructions

    2 Safety instructions Safety instructions Personal risks (health hazard) The device’s sensor tip could injure both yourself and others.  Thus make sure you handle the device properly in transport and when measuring. The device has an automatic hearing protection function. Even ...

  • Page 10: Things Worth Knowing About The Device

    3 Things worth knowing about the device Things worth knowing about the device Setup Overviews with Designation of all Stethophon 04 parts and  Explanation of the symbols/abbreviations on the display  can be found on the inside pages of the front cover...

  • Page 11: Hearing Noises

    3 Things worth knowing about the device Hearing noises The main purpose of Stethophon 04 is hearing noises. That is why the device is almost always used with headphones. The point of the minimum levels shown on the display is to re- inforce the “findings heard”.

  • Page 12: Setting The Volume

    3 Things worth knowing about the device 3.4.1 Setting the volume The missing segment of the volume display symbolises the volume chosen. loud   Change volume What to do? What happens? Keep pressed Noise becomes louder Keep pressed Noise becomes less Release key The chosen volume is saved The volume can also be changed during measuring.

  • Page 13: Automatic Hearing Protector

    3 Things worth knowing about the device 3.4.2 Automatic hearing protector The device is fitted with an automatic hearing protector. To pro- tect the user, a noise picked up which exceeds a certain limit is turned off. The limit for deploying the automatic hearing protector is laid down in the basic settings under PRO.

  • Page 14: Automatic Switchoff

    This means you have to take off the headphones should you not want to hear any noise during measuring. Automatic switchoff The Stethophon 04 turns itself off automatically When the battery/rechargeable battery output is no  longer adequate. (BAT is briefly shown on the display).

  • Page 15: Measuring

    4 Measuring Measuring Turn the device on (measuring mode) Turn on device (measuring mode) What to do? What happens? / Why? Indication on the display Device turns itself on  Press for some 2 seconds 2. Wait Internal query as to whether ...
  • Page 16 4 Measuring Measuring What to do? What happens? / Why? Indication on the display Device is prepared  for measuring Press Noise turned off  2. Place sensor tip on the object of inves- tigation (note in- struction below) Measuring is started ...

  • Page 17: What You Need To Know About The Noise Picked Up

    4 Measuring 4.2.2 What you need to know about the noise picked up With the device turned on you will hear noises over the head- phones. Irregular background noises dominate when no measur- ing is being done (e.g. carrying around the switched-on device). As soon as the sensor tip is placed on an object of investigation an even hissing sound is heard.

  • Page 18: This Is How You Affect Readout Quality

    4 Measuring This is how you affect readout quality Various factors can affect the quality of a measurement. Preferably only check when the number and intensity of back-  ground noises (e.g. opened water pipes, vibrating machinery, talking) is low. Test whether choosing a different filter stage produces a ...

  • Page 19: Change Filter Stage

    4 Measuring 4.3.1 Change filter stage The device can operate with eight different filter stages. The choice of filter stage affects the individual perception of noise. Each filter stage specifically emphasises certain noise constituents. Suitability of the filter stages Filter Frequency Noise Select for stage dull Large pipe diameters ...
  • Page 20 4 Measuring Note: The filter stage affects internal-device calculation of the minimum level. Therefore only compare readings from one and the same filter stage. Change filter stage What to do? What happens? / Why? Indication on the dis- play Filter symbol appears ...

  • Page 21: Use External Microphone

    4 Measuring 4.3.2 Use external microphone The Stethophon 04 can pick up the structure-borne noise of the object of investigation either through the internal-device micro- phone or through the external microphone. It makes sense to work with the external microphone if, as a re- sult, the object of investigation can be inspected more easily (e.g.

  • Page 22: Extend Sensor Tip

    4 Measuring 4.3.3 Extend sensor tip The Stethophon 04 sensor tip can be extended if the object of investigation is too far away or in an unfavourable position. One or several sensor tip extensions (optional accessory, see Annex) are screwed on between device and sensor tip.

  • Page 23: Basic Settings

    5 Basic settings Basic settings This is the way to work in the basic settings Open basic settings What to do? What happens? Indication on the display 1. Requirement: Device must be turned off Device turns itself  Keep pressed Software version is ...
  • Page 24 5 Basic settings Leaving basic settings What to do? What happens? Indication on the display 1. Select the END menu item Device changes to  measuring mode Press Terminating 1. Select any menu item but not END Device turns itself off ...

  • Page 25: What Can Be Set

    5 Basic settings What can be set? Menu The follow- Significance/function item ing is set 0 Hearing functions on the turn on/ Hearing turn off basis Press > Hearing turned on, loudspeaker symbol removed Again press > Hearing turned off, loudspeaker symbol can be seen 1 Hearing functions on the sensor basis...
  • Page 26 5 Basic settings The values set (except for END) are permanently saved up to the next change. They apply to both a renewed turning on and after a replacement of battery/rechargeable battery.

  • Page 27: Maintenance And Care

    6 Maintenance and care Maintenance and care Overview: The maintenance and care of Stethophon 04 comprises the following: Maintenance and care What? How? By whom? How often? Simple See Chap- User Given the impression functional ter 6.2 that Stethophon 04 is...

  • Page 28: Battery Or Rechargeable Battery Change

    6 Maintenance and care Battery or rechargeable battery change The battery compartment is locked with a quick-release fastener (1/4 turn). It can be opened with, for instance, with a coin or screwdriver. CAUTION! The polarity of the two batteries/rechargeable batteries in the compartment points in the same direction.

  • Page 29: Specifications

    7 Specifications Specifications Specifications Operating time: At least 8 hrs Power supply 2 Mignon alkaline batteries 2 NiMH rechargeable batteries (each at least 1600 mAh) Protection class: IP 54 Operating tempera- -10 °C to +50 °C ture: Storage temperature: -25 °C to +70 °C Pressure: 950 hPa to 1100 hPa Air humidity:...

  • Page 30: Hints On Disposal

    European Waste Catalogue (EWC). Type of Waste Corresponding EWC Code Instrument 16 02 13 Battery, accu 16 06 05 Old Instruments Old instruments can be returned to Hermann Sewerin GmbH. We will arrange the qualified disposal free of charge through certified specialists.

  • Page 31: Accessories

    9 Accessories Accessories Headphones Art. No.: EZ12-10000 with 3.5 mm phone jack  Bag S4 Art. No.: 3204-0039 Padded transport bag of hard-  wearing material With compartments for hold-  ing the device incl. sensor tip, M6/180 mm extensions, spare batteries and headphones M6 sensor tip extension 180 mm long...
  • Page 32 9 Accessories Floor microphone BM 04 Art. No.: EM35-10000 For picking up ground-borne  sound on paved and non- paved surfaces With three feet for secure  standing, high-tensile cable (approx. 1.3 m) and phone jack 3.5 mm...
  • Page 33 Hermann Sewerin GmbH Robert-Bosch-Straße 3 · 33334 Gütersloh · Germany Telefon +49 5241 934-0 · Telefax +49 5241 934-444 www.sewerin.com · info@sewerin.com...

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