sewerin SeCorr C 200 User manual

01.09.2017 b – 107613 – en
SeCorr®
C 200 receiver
RT 200 transmitter
Operating instructions

C 200 receiver
Connectors
Fig. 1: C 200 receiver without aerial, front
Fig. 2: C 200 receiver, top view
LED
Light sensor
Touch screen
Connectors
Charging socket
USB port
Microphone socket
ON/OFF key
Aerial

RT 200 transmitter
Aerial with knob and ag
Charging socket
Fig. 3: Transmitter 1 with blue ag and
transmitter 2 with orange ag
Bandpass display
Filter key
LED
Light key
Fig. 4: RT 200 transmitter without aerial, top view
Microphone socket
Fig. 5: RT 200 transmitter, back
Aerial connector

Information about this document
The warnings and notes in the document mean the following:
AWARNING!
Risk of personal injury. Can result in serious injury or
death.
ACAUTION!
Risk of personal injury. Could result in injury or pose a risk
to health.
NOTICE!
Risk of damage to property.
Note:
Tips and important information.
Enumerated lists (numbers, letters) are used for:
● Instructions that must be followed in a specic sequence
Bullet lists (bullet points, dashes) are used for:
●Lists
●Instructions comprising only one action

Contents │ I
1 Introduction .............................................................................1
1.1 Warranty....................................................................................1
1.2 Purpose.....................................................................................2
1.3 Intended use .............................................................................2
1.4 General safety information ........................................................3
1.5 Radio communication................................................................4
2 SeCorr system.........................................................................5
2.1 General information about the system ......................................5
2.2 System components..................................................................5
2.2.1 Overview ................................................................................5
2.2.2 C 200 receiver........................................................................6
2.2.2.1 Setup...................................................................................6
2.2.2.2 Carrying the system ............................................................8
2.2.2.3 Switching the receiver on and off........................................9
2.2.2.4 Automatic power off ............................................................9
2.2.2.5 Main view ..........................................................................10
2.2.2.6 How interference suppression works ................................15
2.2.3 RT 200 transmitter................................................................16
2.2.3.1 Setup.................................................................................16
2.2.3.2 Switching the transmitter on and off..................................18
2.2.4 Microphones.........................................................................18
2.2.4.1 UM 200 universal microphone ..........................................18
2.2.4.2 HY 200 hydrophone ..........................................................19
2.3 Filter options (overview) ..........................................................20
2.4 Plug connection between microphone and RT 200
transmitter ...............................................................................20
2.5 Power supply to the components ............................................21
3 System in use ........................................................................22
3.1 Preparing the system ..............................................................22
3.2 Measurement steps (overview) ...............................................22
3.3 Conguring the pipe sections..................................................22
3.3.1 Setting the number of pipe sections.....................................23
3.3.1.1 Adding a pipe section........................................................24
3.3.1.2 Deleting a pipe section......................................................24
3.3.2 Adjusting the pipe data.........................................................25
3.4 Performing a measurement.....................................................25
3.4.1 Starting a measurement.......................................................26
3.4.1.1 Starting the measurement after conguring pipe sections 26

II │ Contents
3.4.1.2 Continuing measurement..................................................26
3.4.1.3 Repeating a measurement................................................27
3.4.2 Stopping a measurement .....................................................27
3.4.3 Saving a measurement ........................................................27
3.4.3.1 Loading a saved measurement.........................................28
3.4.3.2 Deleting a saved measurement ........................................30
3.5 Optimising the correlation result using lters ..........................31
3.5.1 Filter menu (overview)..........................................................32
3.5.1.1 Frequency graph...............................................................33
3.5.1.2 Correlation curve...............................................................34
3.5.1.3 Quality of peak ..................................................................34
3.5.2 Selecting and adjusting lters ..............................................35
3.5.2.1 Selecting automatically calculated lters...........................35
3.5.2.2 Manually adjusting lters...................................................36
3.5.2.3 Applying the lters (exiting the Filter menu)......................37
3.6 Plausibility check (moving the marker)....................................38
3.7 Listening to noises ..................................................................38
3.7.1 Information about the radio connection during listening.......38
3.7.2 Transmitter menu (overview)................................................39
3.7.3 Adjusting the volume............................................................40
3.7.4 Selecting a transmitter .........................................................41
3.8 Microphone function for acoustic leak detection .....................42
3.8.1 Microphone menu (overview)...............................................42
3.8.2 Performing a noise measurement ........................................44
4 Settings ..................................................................................45
4.1 Overview .................................................................................45
4.2 Setting options ........................................................................45
4.2.1 Selecting ..............................................................................46
4.2.2 Enabling/disabling ................................................................46
4.2.3 Setting a value .....................................................................46
4.3 Settings in the Measurement menu ........................................48
4.3.1 General ................................................................................49
4.3.1.1 Units..................................................................................49
4.3.1.2 Interference suppression...................................................50
4.3.1.3 Correlation curve...............................................................50
4.3.1.4 Blocking lter.....................................................................50
4.3.2 Filter basis............................................................................51
4.3.2.1 Coherence.........................................................................51
4.3.2.2 Cross spectrum.................................................................51
4.3.2.3 Spectrum 1 or Spectrum 2 ................................................52

Contents │ III
4.3.3 Pipe data (Default) ...............................................................52
4.3.3.1 Length ...............................................................................52
4.3.3.2 Material .............................................................................52
4.3.3.3 Diameter............................................................................52
4.3.3.4 Sound velocity...................................................................52
4.4 Settings in the Device menu ...................................................53
4.4.1 General ................................................................................54
4.4.1.1 Switching off the device ....................................................54
4.4.1.2 Switching off the backlight.................................................54
4.4.1.3 Detect position ..................................................................55
4.4.1.4 Automatic brightness.........................................................55
4.4.1.5 Brightness .........................................................................55
4.4.2 Time/Date.............................................................................56
4.4.2.1 Time ..................................................................................56
4.4.2.2 Date...................................................................................56
4.4.3 Region..................................................................................56
4.4.3.1 Date format .......................................................................56
4.4.3.2 Time format .......................................................................57
4.4.3.3 Language ..........................................................................57
4.4.4 Service .................................................................................57
4.4.4.1 Information ........................................................................57
4.4.4.2 Calibration.........................................................................57
5 Servicing ................................................................................58
5.1 Charging the batteries.............................................................58
5.1.1 Charging the batteries in the case .......................................58
5.1.2 Charging batteries using the AC/DC adapter or vehicle
cable.....................................................................................59
5.2 Handling faulty lithium-ion rechargeable batteries ..................60
5.2.1 Identifying faulty batteries ....................................................60
5.2.2 Removing the battery from the C 200 receiver ....................61
5.2.3 Removing the battery from the RT 200 transmitter ..............62
5.3 Calibrating the touch screen ...................................................63
5.4 Care ........................................................................................64
5.5 Maintenance............................................................................64
6 Appendix................................................................................65
6.1 Technical data .........................................................................65
6.1.1 C 200 receiver......................................................................65
6.1.2 RT 200 transmitter................................................................67
6.1.3 UM 200 universal microphone .............................................69

IV │ Contents
6.1.4 HY 200 hydrophone .............................................................70
6.2 Symbols on the touch screen of the C 200 receiver ...............71
6.3 Signicance of LED signals.....................................................73
6.3.1 C 200 receiver......................................................................73
6.3.2 RT 200 transmitter................................................................74
6.4 Troubleshooting.......................................................................75
6.5 Accessories.............................................................................76
6.6 Declaration of conformity ........................................................76
6.7 FCC Compliance Statements..................................................76
6.8 Licences in the EEA ................................................................77
6.9 Note about the rmware (open source software)....................78
6.10 Advice on disposal ..................................................................78
7 Index.......................................................................................79

1 Introduction │ 1
1 Introduction
1.1 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.
●Read these operating instructions prior to operating the prod-
uct.
●Use the product only as intended.
●Repairs and maintenance must only be carried out by special-
ist technicians or other suitably trained personnel. Only spare
parts approved by Hermann Sewerin GmbH may be used
when performing repairs.
● Changes or modications to this product may only be carried
out with the approval of Hermann Sewerin GmbH.
● Use only Hermann Sewerin GmbH accessories for the product.
Hermann Sewerin GmbH shall not be liable for damages re-
sulting from the non-observance of this information. The war-
ranty conditions of the General Terms and Conditions (AGB) of
Hermann Sewerin GmbH are not broadened by this information.
In addition to the warnings and other information in these Operat-
ing Instructions, always observe the generally applicable safety
and accident prevention regulations.
The manufacturer reserves the right to make technical changes.

2 │ 1 Introduction
1.2 Purpose
SeCorr is a system used for correlation.
The SeCorr system can be used for:
●Detecting leaks in water pipes
Note:
All descriptions in these operating instructions refer to the system
as delivered (factory settings). The manufacturer reserves the
right to make changes.
1.3 Intended use
The SeCorr system is intended for professional industrial and
commercial use. The appropriate specialist knowledge is re-
quired to operate the system.
Note:
If necessary, learn more about the theory before commencing
practical work with the system.
The system must only be used for the applications specied in
section 1.2.

1 Introduction │ 3
1.4 General safety information
This product was manufactured in keeping with all binding legal
and safety regulations. It corresponds to the state of the art and
complies with conformity requirements. The product is safe to
operate when used in accordance with the instructions provided.
However, if you handle the product improperly or not as intended,
the product may present a risk to persons and property. For this
reason, always observe the following safety information.
Risk of personal injury (health risk)
● Handle the components carefully and safely both during trans-
port and when working.
● Proceed with extreme caution in the vicinity of electrical lines.
Hazards for the product and other property
●Always handle the components with care.
●Do not drop the components.
●Never set the components in places where they are at risk of
falling.
●It is important that the aerials of the C 200 receiver and the
RT 200 transmitter do not get damaged.
−Never bend, kink or cut the aerial.
−Never carry the C 200 receiver by its aerial.
●Before starting work, check that the components are in good
working order. Never use damaged or faulty components.
●Ensure that no dirt or moisture can get into the ports on the
components.
●Always observe the permitted operating and storage tempera-
tures.

4 │ 1 Introduction
1.5 Radio communication
The SeCorr system uses the following data transmission tech-
nologies:
● Near-eld radio
●SDR (Sewerin Digital Radio)
Near-eld radio
The transmitter and receiver communicate by near-eld radio.
The RT 200 transmitter is classed as radio equipment accord-
ing to EU Directive 2014/53/EU. It may, therefore, be subject to
some use restrictions.
Note:
Users of the SeCorr system are responsible for ensuring compli-
ance with local country regulations regarding the registration and
use of radio equipment. This applies even if there is an explicit
licence for a country.
You can nd a list of the countries of the European Econom-
ic Area (EEA) where this equipment is licensed for use in sec-
tion 6.8 on page 77.
Note:
Radio systems that use the same frequencies can interfere with
each other.
●Switch off the transmitters when not in use.
SDR radio
Receivers and wireless headphones communicate by bidirec -
tional SDR (SDR: Sewerin Digital Radio). SDR is only used when
listening to noises.
For more detailed information about the special features of this
radio connection, please refer to section 3.7.1 on page 38.

2 SeCorr system │ 5
2 SeCorr system
2.1 General information about the system
The SeCorr system works using the correlation method, whereby
measurements are taken at two ttings (e.g. slide gate, hydrant)
at the same time. Highly sensitive microphones record the noises
at the ttings. The two microphones are each connected to a
radio transmitter. The radio transmitters transmit the signals to a
receiver – the correlator. The correlator determines the run time
difference between the signals, i.e. the time lag between the nois-
es reaching the two measuring points. This is then used, together
with the pipe data, by the correlator to calculate the leak position.
The advantage of the correlation method is that the leak posi-
tion is determined independently of the hearing and experience
of the user.
The system features a function which can also locate leaks
acoustically if there is no suitable technology available speci-
cally for pinpointing or prelocation.
2.2 System components
2.2.1 Overview
SeCorr is a modular system. The main components of the sys-
tems are:
●C 200 receiver (correlator)
●2 RT 200 transmitters (1 pair)
− Transmitter 1 with blue ag
− Transmitter 2 with orange ag
●2 microphones, e.g.:
−UM 200 universal microphone
OR
−HY 200 hydrophone
One microphone is required for each RT 200 transmitter. The
same type of microphone must always be used for the two
transmitters.

6 │ 2 SeCorr system
●F8 wireless headphones (optional)
●AC 200 SK 4 case
The system can be transported and stored in the case. The L
AC/DC adapter can be used to recharge the batteries of the
C 200, RT 200 and F8 components simultaneously inside the
case.
Accessories can be added to the system at any time.
Note:
Information about the F8 wireless headphones can be found in
the relevant operating instructions.
2.2.2 C 200 receiver
The C 200 receiver receives data from the RT 200transmitter.
The receiver calculates the leak position from the run time differ-
ence between the signals of the two receivers.
The C 200 receiver is also known as a correlator.
2.2.2.1 Setup
Overviews with the names of all the parts of the receiver can be
found inside the front cover (g. 1 and g. 2).
Its symmetrical housing means that it can be operated by both
right-handed and left-handed users with ease.
Touch screen
The receiver features a touch screen. Certain areas of the touch
screen are touch-sensitive. Actions are performed by touching
these areas (buttons).
All of the buttons have a thick, dark grey outline.
Only your nger or a touch pen should be used to operate the
touch screen.
● Always touch the buttons briey without exerting too much
pressure.

2 SeCorr system │ 7
NOTICE! Risk of damage
The surface of the touch screen is sensitive.
●Do not use any hard or sharp objects to tap the screen.
●Protect the touch screen against aggressive substances (e.g.
acidic or abrasive detergents).
A list of symbols that might appear on the touch screen can be
found in section 6.2 on page 71.
Light sensor
The light sensor analyses the ambient lighting conditions.
If the automatic brightness setting is enabled, the light sensor
always adjusts the brightness of the touch screen to the ambient
lighting conditions.
Information about the automatic brightness setting can be found
in section 4.4.1.4 on page 55.
ON/OFF key
The ON/OFF key is used to switch the receiver on and off.
Information on switching on and off can be found in section 2.2.2.3
on page 9.
LED
The LED indicates the operating status.
Information about what the LED signals mean can be found in
section 6.3.1 on page 73.
Aerial
When using the receiver, the aerial must be pointing upwards
(g. 6). It can be folded down for storage in the case.

8 │ 2 SeCorr system
Fig. 6: Receiver in its normal position of use
The aerial is pointing upwards.
Ports
The receiver features the following ports:
●Charging socket
For recharging the battery.
●Microphone socket
For connecting a microphone, e.g. UM 200 universal micro-
phone.
●USB port
The USB port is only used by SEWERIN Service staff for main-
tenance work.
Connectors
Carrying systems (Vario, triangle, lap belt, hand loop) can be at-
tached to the connectors.
The connectors are parts of quick-release fasteners.
2.2.2.2 Carrying the system
The receiver is usually carried in front of the body so that the user
looks diagonally down at the touch screen.
SEWERIN recommends: Use a carrying system for locating op-
erations. The carrying system prevents you from tiring during
work. It also reduces the possibility of radio interference. Ra-
dio interference can occur if the user accidentally covers certain
components in the receiver.

2 SeCorr system │ 9
2.2.2.3 Switching the receiver on and off
Switching on
●Press the on/off key until the LED turns green.
Switching off
1. Briey press the on/off key. The Switch offdialog will appear.
2. Tap Switch off device. The receiver will switch off.
2.2.2.4 Automatic power off
The power supply to the receiver is designed in such a way that
a fully charged battery will allow one full day's work without in-
terruption. However, it is still recommended to conserve energy
whilst working.
The receiver therefore offers the following automatic power-off
options:
●Switching off the device
The receiver switches off if it is not operated for a specied
period of time. It must be switched back on again when you
want to continue work.
●Switching off the backlight
The receiver backlight switches off if it is not operated for a
specied period of time. The receiver remains switched on.
If and when the automatic power off is activated depends on the
settings (Device menu > General > Switch off device or Switch
off backlight).

10 │ 2 SeCorr system
2.2.2.5 Main view
The touch screen of the receiver displays the main view when
the system is ready for use.
Fig. 7: Main view
Fig. 8: Results display (detail of main view)
The following is shown in the centre of the main view (g. 8):
●Leak position
Distance of leak from transmitter 1 and transmitter 2
●Quality of peak
●Duration of measurement

2 SeCorr system │ 11
The main view also contains the following buttons:
●Measurement
●File
●Transmitter
●Pipe sections
●Filter
●Settings
These buttons can be used to open submenus. Most of the but-
tons also display information. The information displayed depends
on the situation.
Measurement
The Measurement button is divided into different sections. The
appearance of the Measurement button depends on what the
program is doing (g. 9).
●Start measurement button
OR
Stop measurement button
●Reset button
Fig. 9: Measurement button at various stages of the program
Top image: A measurement can be started.
Centre image: A measurement can be stopped.
Bottom image: The calculation data must be reset before a meas-
urement can be started.
For more detailed information on performing measurements,
please refer to section 3.4 on page 25.

12 │ 2 SeCorr system
File
The File menu is opened by pressing the Filebutton. The follow-
ing actions can be performed in this menu:
●Save measurement
●Load saved measurement
●Delete saved measurement
Fig. 10: File button
For information about saving, loading and deleting measure-
ments, please refer to section 3.4.3 on page 27.
Transmitter
The Transmitter button displays the following information:
●Current noise level of the transmitters
−Left: Transmitter 1 (blue)
−Right: Transmitter 2 (orange)
Fig. 11: Transmitter button
The Transmitter menu is opened by pressing the Transmitter
button. The following settings can be made in this menu:
●Transmitters from which noises can be heard through head-
phones
●Volume of noise on headphones
Information about the two transmitters is also displayed.