CS Instruments LD 400 User manual

EN - English
Operating manual
Leakage detector
LD 400

Contents
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1Contents
1Contents................................................................................................................................................. 2
2Important information........................................................................................................................... 3
3Safety instructions ................................................................................................................................. 4
3.1 About this document ....................................................................................................................................................................... 4
3.2 Ensure security................................................................................................................................................................................. 4
3.3 Environmental protection ................................................................................................................................................................ 4
4General function description................................................................................................................. 5
5Device components and controls .......................................................................................................... 6
5.1 The front side ................................................................................................................................................................................... 6
5.2 Sensor head and connections .......................................................................................................................................................... 7
6Accessories............................................................................................................................................. 8
6.1 Acoustic trumpet..............................................................................................................................................................................8
6.2 Focus tube with focus tip ................................................................................................................................................................. 8
7Commissioning....................................................................................................................................... 9
7.1 Switching-on.....................................................................................................................................................................................9
7.2 Louder/quieter .................................................................................................................................................................................9
7.3 Laser.................................................................................................................................................................................................9
8Display.................................................................................................................................................. 10
8.1 Signal strength (level)..................................................................................................................................................................... 10
8.2 Volume/sensitivity .........................................................................................................................................................................10
8.3 Battery level ...................................................................................................................................................................................10
9Battery charging................................................................................................................................... 11
9.1 Protection of exhaustive discharge ................................................................................................................................................ 11
10 Applications...................................................................................................................................... 12
10.1 Leakage detection in compressed air systems ............................................................................................................................... 12
11 Special product features .................................................................................................................. 13
12 Scope of delivery.............................................................................................................................. 14
13 Performance chart ........................................................................................................................... 15
14 Appendix .......................................................................................................................................... 15

Important information
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2Important information
Dear customer,
thank you for purchasing our leakage detector LD400! Please read these operating instructions
thoroughly and observe our notices before performing the commissioning. Only if the described
regulations and notices are precisely observed, can the flawless function of the device and the safe
operation be guaranteed.
In case of a non-observance or non-compliance, no claims for the resulting damages can be asserted
based on the manufacturer's liability.
Any kind of modification of the equipment, provided that it does not correspond to the intended and
described processes, will lead to the expiry of the warranty and exclusion of liability.
The device is solely intended for the described purpose.
CS instruments GmbH shall not assume any warranty with respect to the suitability for any particular
purpose, and shall not assume any kind of liability for errors which are printed in this manual. Nor for
consequential damages in connection with the delivery, performance or use of this device.
Sales Office North Sales Office South
Am Oxer 28c Zindelsteiner Str.15
D-24955 Harrislee D-78052 VS-Tannheim
Tel.: [phone] Tel. : [phone]
Fax: [phone] Fax : [phone]
Mail: [email protected] Mail : [email protected]
Web: http://www.cs-instruments.com Web : http://www.cs-instruments.com

Safety instructions
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3Safety instructions
3.1 About this document
Read through carefully this documentation and familiarize yourself with
the product before putting it to use. Pay particular attention to the
safety warnings to prevent injury and product damage.
Keep this documentation to hand for easy reference when needed.
Pass on this documentation to any subsequent users of the product.
3.2 Ensure security
Use the product only appropriate, in accordance with the regulations and
within the parameters specified in the technical data. Do not apply force.
Measure the unit away from or near energized parts!
Please maintain a sufficient safety distance during the leak checking on
electric systems, in order to avoid dangerous electrical shocks!
Always switch on the device, before putting on the headphones! In case
of high signal levels (bar graph in the red zone), the volume can be
correspondingly high. The volume can be reduced with the help of the
sensitivity adjustment.
Never point the laser directly into the eyes! Absolutely devoid a direct
irradiation of the eyes of humans and animals!
Laser module: according DIN EN 60825-1:2015-07 Class 2 (<1mW)
Observe the prescribed storage and operating temperatures
By improper use of the device, the warranty will be lost.
3.3 Environmental protection
Disposal of faulty rechargeable batteries / empty batteries in accordance with applicable
legal regulations
Lead back the product after the end of the period of use to the separate collection for
electric and electronic devices (observe local regulations) or return the product to CS
Instruments GmbH for disposal.

General function description
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4General function description
Noises in the ultrasonic range develop when gases escape from leaks in piping systems (for example,
leaking screw connections, corrosion etc.). With the LD 400 even the smallest leaks, which are inaudible
to the human ear and also non-visible due to their size, can be detected even if they are several meters
away. The LD 400 converts the inaudible ultrasonic to audible frequencies. With the conveniently
wearable and soundproof headphones, these sounds can even be perceived in noisy environments.
The LD 400 is the further development of the proven LD 300, and is able to perform convincingly
through a significantly more sensitive sensor technology as well as an improved support during the leak
detecting process.
With the help of an integrated laser pointer, which serves as a targeting device, the leak can be located
even more accurately.
The sensitivity of the device can be further improved through the use of a specially designed acoustic
trumpet, which can ensure a greater concentration of the sound waves.
This acoustic trumpet acts as a directional microphone, that suppresses annoying background noises
and also facilitates the precise localization of leaks in inaccessible areas.
The internal laser pointer can also be used without restrictions due to the special construction of the
acoustic trumpet.

Device components and controls
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5Device components and controls
5.1 The front side
The device components and controls of the front side are described in the following picture.
LED status display
On/off switch
Volume/sensitivity decrease
Volume/sensitivity increase
Laser on/off button
2“ TFT color
display

Device components and controls
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5.2 Sensor head and connections
Ultrasonic
microphone
Opening of the laser pointer
Battery charge
socket
3.5mm jack for the
headphone

Accessories
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6Accessories
Further accessories are available for the LD400 with which the leak detection can be facilitated and
improved.
6.1 Acoustic trumpet
Through the concentration of sound waves, the acoustic trumpet creates an acoustic amplification
which enables a more precise detection of the leak. Through its special design, the integrated laser
pointer will remain usable. The acoustic trumpet is simply placed onto the sensor head and slightly
twisted until the latch head reaches the stopper. While doing this, please proceed with caution to
prevent an over-winding of the cone.
6.2 Focus tube with focus tip
The focus tube with the tip is used for the detection of very small leaks, in order to locate and pinpoint
them precisely. Just like with the acoustic trumpet, the tube is placed onto the sensor head and latched
with a twisting motion.
Acoustic trumpet
Focus tube with focus tip
Mounted
acoustic trumpet
Mounted focus tube
with focus tip

Commissioning
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7Commissioning
7.1 Switching-on
A pressing and holding of the on-off-button for about 1s, will switch on the device and a Start-Up
sequence will appear on the display. Pressing the button again will switch off the device.
7.2 Louder/quieter
With the volume increase and decrease buttons the volume in the earpiece and the sensitivity can be
increased or respectively decreased in 16 steps. By pressing and holding the respective button, the value
will automatically increase or decrease.
7.3 Laser
The integrated laser pointer can be switched on or off with the laser on/off button. In the on state, a
laser warning symbol will appear in the display. In the off state, the triangle will remain grey.
Warning: Never point the laser directly into the eyes! Absolutely devoid a direct
irradiation of the eyes of humans and animals!

Display
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8Display
The display elements are shown and described in the following picture.
8.1 Signal strength (level)
In the middle of the display, a bar graph is displayed depending on the received signal strength. A
numerical value of the received signal strength in dB will also appear in the upper-left corner of the
display. The max. level to be displayed is 60 dB.
8.2 Volume/sensitivity
The selected volume/sensitivity will appear on the right side in a bar with up to 16 steps.
8.3 Battery level
On the bottom left, a battery symbol is displayed with a battery level bar. The current battery voltage in
volts is also displayed below it.
Signal level display in dB
Display laser on/off
Battery level and
voltage
Bar graph display of the
received signal level (60dB
max.)
Bar graph for the selected
sensitivity (16 levels)

Battery charging
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9Battery charging
The battery is charged within the device. For this, the supplied plug-in power supply is connected to the
built-in charging socket of the LD400 and the 230V socket.
The LD400 checks the charge status of the battery and automatically starts the charging process. The
following scenarios are possible:
If the battery is sufficiently charged, the status LED will flash green after the connection of the
power supply and no additional charging will be performed.
If the charge state of the battery is too low, the charging process will automatically start and the
LED will light up red. The charging is automatically discontinued after the battery reaches its full
capacity. The LED will then be permanently illuminated in green.
A red blinking LED signals a charging error. This may have caused during charging outside the
valid temperature range (0-40 °C).
Comment
1
:
Switching on the device during charging, the display will show additionally a progress bar with
The text “Charging”.
9.1 Protection of exhaustive discharge
To protect the Li-ION accumulator of exhaustive discharge the device is switching off automatically if a
cell voltage of 6,4V will be reached.
1
Available with FW-version V1.12
Connect the power supply to
the charging socket
The LED is
illuminated in red
during the battery
charging

Applications
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10 Applications
The typical applications for the LD 400 include the detection of:
Leaks in pressure and vacuum systems
Leaks in containers
Leakage points in the pneumatic brakes of trucks and trains
Leaks in piping systems
Leaks in oxygen connections in hospitals
Leaks in steam separators - leaky valves
electrical partial discharges on seals
Also defective bearings in engines and transmissions produce sounds in the ultrasonic range, which can
be protected with the LD400.
10.1 Leakage detection in compressed air systems
Compressed air is one of the most costly forms of energy. In Germany alone, 60,000 compressed air
systems are consuming 14.000.000.000 KWh of electricity each year. 15% to 20% of these could easily
be saved (Peter Radgen, Fraunhofer Institut, Karlsruhe). Much of these costs are attributable to leaks in
compressed air systems. The air simply "escapes" unused.
Large openings can be detected easily (you can clearly hear the hissing sound), but often holes smaller
than 1 mm2remain undetected because they cannot be heard. The LD 400 is perfectly suited for the
detection of these small openings.
The unit is focused on the pipe or the component where leaks are suspected. Initially the sensitivity will
be set to half of the full value. The integrated laser will assist the location detection from a certain
distance. The sensitivity will then be varied with the volume control until the characteristic sound can be
heard.
A significant sensitivity improvement can already be attained with the help of the acoustic trumpet
which is already included in the set. Through this, it is possible to determine leakages even from larger
distances.
To detect very small openings, a focus tube with a directional tip is attached onto the sensor, and the
suspicious points are directly approached in close proximity.

Special product features
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11 Special product features
Ruggedness and low weight ensure a fatigue-free operation within industrial environments
improved detection of leakages with an optional acoustic trumpet
modern lithium-ion battery with a high capacity and an external battery charger
Operating time > 10 h
simple operation via keypad

Scope of delivery
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12 Scope of delivery
The LD400 is available either as a stand-alone device or as a set. The set contains all the components
and accessories, which are housed protected in a rugged and shock-resistant transport case.
The following table lists the components with their respective order numbers.
Description
Order number
LD 400 ultrasound detector set, consisting of:
0601 0104
LD 400 ultrasound detector basic device
0560 0104
Acoustic trumpet
0530 0109
Soundproof headset
0554 0104
Focus tube with directional tip
0530 0104
Battery charger
0554 0009
Transport case
0554 0106
Operating manual
0554 0011
Acoustic trumpet
(0530 0109)
Focus tube
with focus tip
(0530 0104)
Soundproof
headset
(0554 0104)
Battery charger
(0554 0009)
LD400 ultrasonic
detector
(0560 0104)
Transport case
(0554 0106)

Performance chart
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Technical Data LD400
Handheld case dimensions
263 x 96 x 88 mm
Weight
0.4 kg, complete set in the case approx. 2.8 kg
Frequency range
40kHz (+/- 2kHz)
Power supply
Internal 7.4 V lithium-ion battery
Operating time
> 10 h
Operating temperature
-5 °C to +40 °C
Charging
Ext. battery charger (included in the scope of delivery)
Charging time
approx. 1.5 h
Storage temperature
-10 °C to +50 °C
Laser
Wavelength 645-660nm, output < 1mW (Laser class 2)
Connections
3.5 mm jack for headphones, power jack for connecting an external
charger
13 Performance chart
It shows the detection distance of various hole diameters at different pressures (lab environment).
Pressure / diameter
0.1 mm
0.2 mm
0.5 mm
0.5 bar
2 m
2 m
10 m
5.0 bar
8 m
14 m
18 m
14 Appendix
In the appendix on the following pages you will find the Declaration of Conformity for the
electromagnetic compatibility and the Test Report of the Li-ion batteries used.

Appendix
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This declaration does not include any assurances regarding characteristics.
The safety instructions of the accompanying product documentation must be observed.

Appendix
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Appendix
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