CS Instruments LD 300 Instruction Manual

INSTRUCTION MANUAL

V2-01-2007

LD 300 Leak Detector:

For leak detection in pneumatic systems

.

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Contents

1. Operating principle

2. Technical data

3. Scope of delivery

4. Operation of instrument

5. Typical applications

I

mportant information

The operating instructions must be read in full and carefully observed
before starting up the device.

The manufactur er cannot be held liable for an y damage which occurs as a
result of non-observance or non-compliance with this manual.

Should the device b e tampered with i n any manner ot her than a procedure
which is described and specified in the m anual, the warranty is cancelled
and the manufacturer is exempt from liability.

The device is destined exclusively for the described application.
CS Instruments Gm bH offers no guarantee for the s uitability f or any other

purpose and is not liable for errors which may have slipped into this
operating manual. They are also not liable for consequential damage
resulting from the delivery, capability or use of this device.

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Safety instructions
Must be read before starting up the device!
Warning:

• Switch on instrum ent without head set on. Monitor the displa y that
there are only green bars shown. In case of yellow or red bars,
reduce sensitivity by turning the sensitivity wheel.

• When detecting ultra s onic s ignals in e lectric al syst ems ens ure that
you keep sufficient safety distance to avoid electrical shocks!

• Do not point into the eyes with the laser!

• Observe permissible storage, transport and operating

temperatures.

• Improper handling or use of force cancels all warranty claim s.

Operating principle

LD 300 ultrasonic leak detector allo ws maintenance p ersonnel to conf irm a
diagnosis on the s pot by being able to clearl y discriminate am ong various
equipment sounds.

This is accomplished by an electronic process called 'heterodyning' that
accurately converts the ultrasounds sensed by the instrument into the
audible range where users can hear the audible signal through a
headphone.

The high frequenc y, short wave character istic of ultrasound enabl es users
to accurately pinpoint the location of a leak or a particular sound in a
machine.

The basic advantages of ultrasonic instruments are that they can easily
locate leaks, provide advanced warning of impending mechanical failure
and can be used in loud, noisy environments.

LD 300 integrates a laser pointer which helps to spot the leak from
distance.

In unpressurized s ystems an ultrasonic tone g enerator c an be used whose
sound will leak through small openings.

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Air leaks produce wide-band ultrasou nds in the range of 20 ... 80 kHz. The
higher the frequency the more energy it contains. But higher frequencies
can't be transporte d in air that far. That's why LD 300 operates at a centre
frequency of 40 k Hz which compromises an optim um between energy and
distance. Frequencies below and above are cut in order to minimize the
noise level.

Scope of delivery

Description

Order No.

LD 300 Leak Detector set consisting of:

0601 0103

LD 300 Leak Detector

0560 0102

Sensor unit

0605 0001

Noise isolated head set

0554 0102

Focus tube and focus tip

0530 0101

Cable to detach sound probe from instrument

0553 0101

Battery charger

0554 0001

Transport case

0554 0101

Accessories not includes in set:

Ultrasonic Tone Generator

0554 0103

Telescope extension with cable

0530 0102

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Technical data

Operating frequency: 40 kHz ±2 kHz
Plugs: 1) 4 pole connector shared by
headphone and battery charger

2) 3.5mm stereo phone jack for sensor or
sensor cable connection.
Display: 3 colour black-mask LCD, 10 level
LASER pointer: 640 ... 660 nm wavelength

0.4.0.5 mW output power
Power supply: Internal NiMH rechargeable battery
Operating time: about 6 hours without LASER pointer on
about 4 hours with LASER pointer on
Charging time: around 1.5 hour
Charging operation temp.: +10°C to + 45°C (recommended)
Operating temperature: 0°C to + 40°C
Storage temperature: -10°C to + 50°C
Weight: 2.5 kg (full set)

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

Attention:

The sensor unit can be unplugged from the m ain instrument by pulling the
unit out of the ho lder. A se parate c oiled extens ion ca ble is use d to conn ect
the sensor to the main unit.

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Operation of instrument

Figure A: LD 300 operation diagr am

after 2 sec all LCD
segments are on

LD 300 is switched off

- LD 300 is switched on

- LCD all segments on for 2 sec.

- Laser off

Press

Press

Press

after 30 minutes the
appliance switches off

The user can adjust the sensibility by

the volume regulator

- Switch LASER on/off

- “LASER“ symbol if LASER active

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Attention:
If the instrument hasn't been used for more than 2 months, the battery

might be over dischar ged. You s hould c onnect th e batter y charger and wait
about 2-3 minutes until the display can show you the actual battery status.

Applications

With all operating equipment, most leakage and electrical problems
produce a broad range of sound.

The high frequenc y ultrasonic components of these sounds are in nature,
extremely short wave.

A short wave signal tends to be fairly directional.
It is therefore simple to isolate these signals from any background plant

noises and to detect their exact location.

Figure B: LD 300 headphone and

charger connection diagram

Figure C: Battery charging operation

diagram

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In addition, as slight changes begin to occur in mechanic al equipment, th e
directional nature of ultras ound a llows thes e pote ntial warning s ignals to be
detected in time, before actual failure occurs.

Typical applications of LD 300 are compressed air leak detection, vacuum
leak detection, steam trap inspection and detection of arcing, tracking and
corona in electrical equipment.

Ultrasonic Leak detector detects:

– air leak in compressed air systems
– leaks in tanks
– Leaks in pneumatic brakes of trucks and trains
– pipe system leaks
– Leaks at oxygen plugs in hospitals
– leaks in pressure and vacuum systems
– leaks in steam traps
– leaking valves
– Partial electrical discharges at insulations
– Insulation test on doors and windows
– gas leaks in general

Leak detection in compressed air systems

Compressed air is one of the most expensive energy forms. Only in
Germany 60,000 pneumatic systems consume 14,000,000,000 kWh
electricity every year. 15% to 20% of this could easily be saved (Peter
Radgen, Fraunhof er Institut e, Karlsruhe) . A large por tion of these c osts are
caused by leaks in compressed air systems. The air “escapes” unused.

Big holes can be detected easily (one can hear the fizzling), but holes
smaller than 1 mm

2

can not be heard any more and remain often
undetected. For detect ion o f thes e sm all holes in compressed air LD 300 is
designed.

You can point with the L D 300 to the pipe or to the com ponent of interest.
The integrated laser pointer wil l assist you i n case of a m easurement from
a distance. Then increase the sensitivity until you can hear the

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characteristic noise of a leak. Go closer to identify the location exactly.
Adjust the sensitivity when necessary.

To detect ver y small holes the focus tube and t he focus tip can be stick ed
onto the sensor unit.

In applications where LD 300 is too bulky for a close up detection, the
sensor unit can be removed from the main unit. In the scope of delivery
there is an extension cable which can be connected between sensor and
main unit.

Detection of leaks in unpressurised systems

LD 300 can be used to detect leaks at insulations of doors, windows and
tanks. For this purpos e an ultrasonic to ne generator ( 0554 0103) is placed
inside the room or tank. If there are small holes the ultrasonic sound will
leak and can be easily located by LD 300.

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Dear

Customer,

Thank you for your confidence in CS Instruments which you have shown by
purchasing this measuring

instrument. You have made the right choice by choosing a

quality product. If

you have reason for complaint we will repair any faults free of

charge if it can be proven that they are

manufacturing faults. The fault should be
reported immediately after it has been found and within the warranty time guaranteed
by

us.

Excluded from this warranty is damage caused by improper use and non-adherence
to the instruction

manual.

The warranty is also cancelled once the measuring instrument has been opened
provided this is

not described in the instruction manual for maintenance purposes.

This is al s o t h e c ase if the serial

number has been changed, damaged or removed.

The warranty time for the

LD

300 is

12 months for the instrument, 6 months for

access ory parts.

Warranty services do not extend the warranty time.

If in addition to the warranty service necessary repairs, adjustments or similar are
carried out,

the warranty services are free of charge but there is a charge for other

service s s uch as transport

and packaging costs.

Other claims, especially those for damage occurring outside the instrument are not
included unless responsibility

is

legally binding.

After-sales service af t er t he warr anty time has elap sed

We are, of course, there for you after the warranty time has elapsed. In the case of
function faults please

send us your measuring instrument with a brief description of

the defect. Include

your telephone number should we need to contact you.

Our CUSTOMER SERVICE puts the customer first.

CS Instruments

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EC Declaration of Conformity

for

DIRECTIVE 2002/96/EC OF THE EUROPEAN PARLIAMENT AND OF
THE COUNCIL
of 27. January 2003
on waste electrical and electronic equipment (WEEE)

and

DIRECTIVE 2002/95/EC OF THE EUROPEAN PARLIAMENT AND OF
THE COUNCIL
of 27. January 2003
on the restriction of the use of certain hazardous substances in
electrical and electronic equipment (RoHS)

of the down mentioned instruments from CS Instruments GmbH:

Leak detector LD 300 an d ac c es sor ies
CS Instruments GmbH as the manufacturer herewith declares that the

above instruments and accessories belongs to the category 9 (WEEE
2002/96/EC).
Therefore the above instruments do not fall upward aforementioned
directive RoHS 2002/95/EC and are not affected by the material restriction.
In accordance with directive W EEE 2002/9 6/EC the m easuring ins truments
specified above are taken back from CS Instruments GmbH to the disposal.

CS Instruments GmbH
Harrislee, 26.April 2007 Am Oxer 28c
D-24955 Harrislee
Tel. 0461 / 700 2025
Fax 0461 / 700 2026

__________________________

Christian Schuldt, Man ag in g Director

This declaration does not guarantee any product characteristics.

CS Instruments

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Contact

• Advice

• Sales

• Customer-service

• Seminars

Sales office South

Zindelsteiner Str. 15

D-78052 VS-Tannheim

Tel. [phone]

Fax [phone]

[e-mail]

www.cs-instruments.com

Sales office North

Am Oxer 28c

D-24955 Harrislee

Tel. +49 (0) 461 – 700 2025

Fax. +49 (0) 461 – 700 2026

[e-mail]

www.cs-instruments.com