Crowcon Xgard Bright Installation, Operation And Maintenance Instructions

Installation, Operation and Maintenance Instructions

M070068
Issue 1
January 2019

Xgard Bright

Gas Detectors with Display and Relays

Contents

1. Introduction .............................................................................. 1

1.1 Product overview .............................................................. 1

1.2 Safety information ............................................................ 1

1.3 Storage instructions .......................................................... 2

1.4 Certification labels ........................................................... 3

1.5 Product dimensions .......................................................... 4

1.6 Exploded view .................................................................. 5

2. Installation ................................................................................ 6

2.1 Location ........................................................................... 6

2.2 Mounting ......................................................................... 7

2.3 Cabling requirement .........................................................7

2.4 Electrical connections ....................................................... 8

2.5 Earthing requirements ......................................................9

2.6 Cable glands .................................................................. 10

2.7 Fitting accessories ........................................................... 13

3. Operation ............................................................................... 14

3.1 Operation panel ............................................................. 14

3.2 Key Operation ................................................................ 14

3.3 Start up .......................................................................... 15

3.4 Menu functions .............................................................. 16

3.5 Zero ............................................................................... 17

3.6 Calibrate ....................................................................... 17

3.7 Routine maintenance ..................................................... 18

3.8 Sensor replacement ........................................................ 18

4. Specifications .......................................................................... 20

5. Warranty ................................................................................21

1

English

1. Introduction

1.1 Product overview

XGard Bright is a versatile gas detector for monitoring a wide range of

flammable and toxic gases and oxygen levels. XGard Bright incorporates a
bright OLED (organic light emitting diode) display and a magnetic wand for
easy menu operation.

XGard Bright provides analogue 4-20mA and RS-485 Modbus signals as
standard, with optional HART interface. Relays are also fitted for activating local
alarms or sending digital signals to control systems.

XGard Bright may be fitted with electrochemical type toxic or oxygen sensors,
pellistor-type flammable gas sensors or infrared (IR) hydrocarbon or carbon
dioxide gas sensors. Please refer to the product identification label to determine
the type of sensor fitted.

Pellistor sensors are designed to detect flammable gases and vapours in
concentrations not exceeding the Lower Explosive Limit (LEL) of the target gas
for which the detector is calibrated.

XGard Bright is ATEX and IECEx Ex db IIC T6 Gb flameproof certified for use in
Zone 1 or 2 hazardous areas

1.2 Safety information

Safety information relevant to Ex requirements:

• WARNING – POTENTIAL ELECTROSTATIC CHARGING HAZARD. The painted
aluminium enclosure constitutes a potential electrostatic hazard and the
equipment must only be cleaned using a damp cloth.

• The cable gland must be installed before use and must comply with the
requirements of standards EN60019-0 and EN60079-1 with minimum IP66
ingress protection.

• Unused cable entries must be sealed using an ATEX/IECEx Exd certified
stopping plug with minimum IP66 ingress protection.

• Only cables of types specific in these instructions can be used.

• External earthing should be considered and installed according to these
instructions before use.

• WARNING – DO NOT OPEN WHEN AN EXPLOSIVE ATMOSPHERE IS
PRESENT.

• The lid on XGard Bright must be kept tightly closed until power to the

Introduction

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English

detector is isolated otherwise ignition of a flammable atmosphere can
occur. Before removing the cover for maintenance, ensure the surrounding
atmosphere is free of flammable gases or vapours.

General safety information

• XGard Bright gas detectors must be installed, operated and maintained in
strict accordance with these instructions, warnings, label information, and
within the limitations stated.

• XGard Bright detectors are designed to detect gases or vapours in air, and
not inert or oxygen deficient atmospheres. XGard Bright oxygen detectors
can measure in oxygen deficient atmospheres.

• Electrochemical cells used in toxic and oxygen versions of XGard Bright
contain small volumes of corrosive electrolyte. Care should be observed
when replacing cells to ensure that the electrolyte does not come into
contact with skin or eyes.

• Maintenance and calibration operations must only be performed by
qualified service personnel.

• Only genuine Crowcon replacement parts must be used, substitute
components may invalidate the certification and warranty of the detector.

• XGard Bright detectors must be protected from extreme vibration, and
direct sunlight in hot environments as this may cause the temperature of
the detector to rise above its specified limits and cause premature failure. A
sunshade is available for XGard Bright.

• This equipment must not be used in a Carbon Disulphide atmosphere.

1.3 Storage instructions

Some types of sensor available with XGard Bright have limited life when left
un-powered and/or may be adversely affected by temperature extremes or
environmental contamination. Ideal storage conditions are 20˚C and 60%RH.
Do not expose sensors to contaminants such as silicones, lead compounds and
strong solvents such as isopropanol. It is strongly recommended detectors are
installed and powered within 3 months of purchase.

Introduction

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English

1.4 Certification labels

Diagram 1: Xgard Bright Certification Labels

ATEX and IECEx certification label

Gas name and range label

Warning label

Introduction

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English

1.5 Product dimensions

All dimensions in millimetres

Diagram 2: Xgard Bright dimension view

Introduction

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English

1.6 Exploded view

Diagram 3: Xgard Bright exploded view

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English

2. Installation

WARNING

This detector is designed for use in Zone 1 and Zone 2 hazardous
areas, and is certified Ex db IIC T6 Gb for operation up to 70°C
(158°F). Installation must be in accordance with the recognized
standards of the appropriate authority in the country concerned.
For further information please contact Crowcon. Prior to carrying
out any installation work ensure local regulations and site
procedures are followed.

2.1 Location

The detector should be mounted where the gas to be detected is most likely to
be present. The following points should be noted when locating gas detectors:

• To detect gases which are lighter than air, detectors should be mounted at
high level and Crowcon recommend the use of a collector cone (Part No.
C01051).

• To detect heavier than air gases, detectors should be mounted at low level.

• When locating detectors consider the possible damage caused by natural
events e.g. rain or flooding. For detectors mounted outdoors Crowcon
recommend the use of a Spray Deflector (Part No. C01052).

• Consider ease of access for functional testing and servicing.

• Consider how the escaping gas may behave due to natural or forced air
currents. Mount detectors in ventilation ducts if appropriate.

• Consider the process conditions. For example, butane is normally heavier
than air, but if released from a process which is at an elevated temperature
and/or pressure, the gas may rise rather than fall.

• Location of oxygen sensors requires knowledge of the gas that may
displace the oxygen. For example, carbon dioxide is denser than air and
therefore is likely to displace oxygen from low levels upwards.

• Sensors should be mounted at head height (1.5m nominally) to detect
gases of a similar density to air, assuming that ambient conditions and the
temperature of the target gas are nominally 20˚C.

The placement of sensors should be determined following advice of experts
having specialist knowledge of gas dispersion, the plant processing equipment
as well as safety and engineering issues. The agreement reached on the
locations of sensors should be recorded.

Installation

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2.2 Mounting

XGard Bright should be installed at the designated location with the sensor

pointing down. This ensures that dust or water will not collect on the sensor
and stop gas entering the cell. Care should be taken when installing the
detector to avoid damaging the painted surface of the enclosure.

2.3 Cabling requirement

Cabling to XGard Bright must be in accordance with the recognised
standards of the appropriate authority in the country concerned and meet the
electrical requirements of the detector.

Suitable explosion proof glands must be used. Alternative cabling techniques,
such as steel conduit, may be acceptable provided appropriate standards are met.

XGard Bright requires a dc supply of 10-30V, at up to 100mA. Ensure there is
a minimum of 10V at the detector, taking into account the voltage drop due
to cable resistance. For example, a nominal dc supply at the control panel of
24V has a guaranteed minimum supply of 18V. The maximum voltage drop is
therefore 8V. XGard Bright can demand up to 100mA and so the maximum
loop resistance allowed is 80Ohms.

NOTE: The maximum current consumed at the end point of a cable may vary
if sounders and beacons are attached and controlled by Xgard Bright. Under
these circumstances cable distances will vary from those in the table.

A 1.5mm2 cable will typically allow cable runs up to 3.3km. Table 1 below
shows the maximum cable distances given typical cable parameters.

C.S.A. Resistance

(Ohms per km)

Max. Distance

(km)

mm

2

Awg Cable Loop

1.0 17 18.1 36.2 2.2

1.5 15 12.1 24.2 3.3

2.5 13 7.4 14.8 5.4

Table 1: maximum cable distances for typical cables

The acceptable cross sectional area of wire used is 0.5 to 2.5mm2 (20 to
13awg). The maximum acceptable diameter of cable used is 15mm. The

table is provided for guidance only, actual cable parameters for each
application should be used to calculate maximum cable distances.

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2.4 Electrical connections

All electrical connections are made via the screw terminal block mounted on
the terminal PCB in the enclosure base. The terminals are marked ‘+’, ‘Sig’
and ‘-’ and correct polarity should be observed when connecting the detector
to control equipment.

XGard Bright is factory set as a ‘current sink’ device unless otherwise
specified when ordering. To reset to ‘current source’, open the enclosure base
and move the three links on the terminal PCB from the ‘SINK' position to the
‘SOURCE’ position.

Relays are fitted to indicate any Fault, Level 1 alarm or Level 2 alarm and are
marked accordingly. The Alarm relays are normally de-energised, the Fault
relay is normally energised (fail-safe). The volt-free contacts can be changed
from Normally Open (NO) to Normally Closed (NC) by moving the adjacent
link, where NO and NC refer to the de-energised state. The fault relay on
XGard Bright is normally energised (when the detector is healthy), therefore
the operation of the FAULT contacts is the reverse of that stated.

To limit radio frequency interference, the enclosure base and cable armour
should be grounded (earthed) at the control panel. Ensure the earth
connection is provided in a safe area only, so as to avoid earth loops.

Sounder terminals: provide a high-end output for directly triggering audible­visual alarms. Alarms will be activated by a voltage equivalent to the XGard
Bright detectors supply (24Vdc nominally). Devices with a total maximum
current of 250mA may be connected.

Note: When connected with an audible-visual alarm the maximum
detector current need to be added up with the current that source into
the audible-visual alarm. The maximum 350mA current should be used
to calculate maximum cable distances.

RS-485 terminals: can be used to enable XGard Bright to communicate to
a Modbus Master device using the Modbus RTU protocol. This function can
be used in conjunction with the 4-20mA analogue signal to transmit data
to a central system, or used for multi-dropping detectors on an addressable
network. An ‘XGard Bright Modbus Instructions’ document is available
from Crowcon detailing all necessary connection, data format and address
information

Installation

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2.5 Earthing requirements

Earth terminals are provided on the outside of the XGard Bright enclosure
adjacent to the top-right cable entry, and internally adjacent to the left-hand
sounder out cable connector. For electrical safety it is essential that the XGard
Bright enclosure is bonded to earth, usually using the external earth lug, if
an earth cable is provided in the field cable the internal earth point can be
used. The grounding terminal connection must be tightened using a torque
screwdriver to 10Nm; secured using an M4 x 6mm screw, a plain washer and
a star/lock washer. Earthing cables must be 4mm2 or greater in cross-sectional
area.

Diagram 4: Earthing Connections

Installation

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2.6 Cable glands

Instructions for installing appropriate certified glands with unarmoured and
armoured cable is given below.

Unarmoured cable

1. Backnut

2. Compression Spigot

3. Seal

4. Middle Nut

5. Inner Seal

6. Entry

Allow sufficient length of cable to the detector, fit shroud if required, pass the
cable through cable gland.

1. Screw the gland Entry into the XGard Bright M20 cable Entry. Using two
spanners or wrenches, hold the gland Entry in position to prevent rotation
and tighten the Middle Nut until resistance is felt between the Seal and
cable. Then turn the Middle Nut through a further half to one full turn to
complete the Inner Seal.

2. Hold the Middle Nut in position to prevent rotation and tighten the
Backnut until resistance is felt between the Seal and cable, then turn the
Middle Nut through a further half to one full turn to complete the Outer
Seal.

Installation

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Armoured cable

1. Backnut

2. Compression Spigot

3. Compression seal

4. Middle Nut

5. Reversible Armour Clamping Ring

6. Armour Spigot

7. Inner seal

8. Entry

1. Expose the armour/braid “A” by
stripping the cable's armoured / woven
layer and removing the cable filler.

2. Push the cable through the Armour
Spigot. Spread armour/braid over the
Armour Spigot until the end of the
armour/braid is up against the shoulder
of the armour cone. Position the Armour Clamping Ring.

3. Remove the Inner seal from the Entry.
Place the Entry over the Armour Spigot.
Move the Middle Nut to meet the Entry.

4. Hold the Entry in position with a
spanner/wrench to prevent rotation.
Hand tighten the middle Nut to the
Entry and turn a further half to one
full turn with a spanner/wrench.

5. Unscrew the Middle Nut and visually
inspect that the armour/braid has
been successfully clamped between
the Armour Spigot and the Armour
Clamping Ring. If armour/braid not
clamped, repeat assembly.

A=15mm

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6. Remove Entry and refit Inner Seal,
replace Entry and re-assemble Middle
Nut onto the entry component.
Tighten up the Middle Nut by hand
then using a wrench/spanner a further
1 to 4 turns until fully tight.

Notes:

1. These instructions are provided for general guidance only. It is essential
that the instructions provided by the cable gland manufacturer are strictly
adhered to.

2. Only cable glands ATEX and IECEx certified Exd Flameproof may be used
with XGard Bright.

3. Cable glands must have a minimum ingress protection rating of IP66.

Installation

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2.7 Fitting accessories

Collector cone (product code C01051)

Aids detection of lighter than air gases such as hydrogen or
methane. Includes a pipe spigot for application of bump test
gas

Spray deflector (product code C01052)

For outdoor installations and sensor protection from water
sprays.

Weatherproof cap (product code C01442)

For use offshore or very wet environments.

Flow adaptor (product code C01339)

For use in sampling applications.

Sun shield (product code C011063)

Prevents against excessive heat build-up due to direct
sunlight.

Calibration adaptor (product code C03005)

Enables application of calibration gas to the sensor.

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3. Operation

WARNING

Prior to carrying out any work ensure local regulations and site
procedures are followed. Never attempt to open the detector or
enclosure base when flammable gas is present. Ensure that the
associated control panel is inhibited so as to prevent false alarms.

3.1 Operation panel

The XGard Bright operation panel comprises an OLED screen, a three-colour
status LED and two magnetically operated Hall Effect switches. The screen
displays white characters on a black background and can be viewed clearly
even in bright sunlight. Reversed white screen saver will be activated in
normal detection condition while long time no operation.

Diagram 5: Xgard Bright operation panel

3.2 Key Operation

Key response has time dependency, two kinds of action would be generated
depend on how long time the key was hold.

• Short-time action event, magnet applied and removed in 2 seconds.

• Long-time action event, magnet applied and hold for more than 2 seconds,
a short beep will indicate 2 seconds is complete.

%lel

50

Operation

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3.3 Start up

When the XGard Bright is powered up, the unit will perform internal
diagnostic checks whilst the display will show a Crowcon logo. This procedure
will be displayed for about 10 seconds followed by displaying a warming up
status for about 120 seconds.

Diagram 6: Start up and Warming up

If the diagnostic checks were successful, the gas status screen will be
displayed. In normal operation the gas level will be indicated on the display.

Use the supplied magnetic wand to select the Scroll key to move between the
information screens shown below.

Diagram 7: Gas status screen

%lel

50

ppm

16

%vol

20.9

ma

4.00

oxygen

19.6
1419

20%vol

20.9

-0.0161

Gas name

PCB temperature

ADC value

Range

Gas value

Gain

SN: 0000000000000000
f: 2. 10 : 0.3 h: 151003
1 0 0 0
Volt: 23v dt: 20171206













1. Serial number

2. Firmware version, Hardware version

3. HART ID

4. Detector 485 Address, 485 packets
received, 485 packets address match,
Polling address

5. Detector supply voltage

6. Due time in format YYYYMMDD

Operation

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3.4 Menu functions

From the gas display screen, use the supplied magnetic wand to select the
Enter/Menu key to show password screen.

Enter the password: ‘0000’ to display the following menu. Select the Scroll key
to change the displayed number, and the Enter/Menu key to move to the next
integer. Hold the Enter/Menu key for two seconds to enter the menu.

Use Scroll key to move down the menu options list and to change the numbers
in any screen. Hold the scroll key for 2 seconds to move up the menu options.

1. Zero: to zero the sensor

2. Cal gas: to calibrate the sensor

3. To main menu: returns the display to the main gas screen

4. Set Alarm 1: to adjust the first alarm threshold

5. Set Alarm 2: to adjust the second alarm threshold

Note: if the Alarm 2 threshold is set lower than the Alarm 1 threshold
both will act as falling alarms.

6. Clr Loc Alarm: to de-activate the ‘Sounder Out’ output (used to silence
alarms even if the gas level remains above the alarm thresholds).

7. Chn/Eng: switch between Chinese and English display

8. Set 485 Addr: sets the node address of the detector for Modbus operation

9. Test Relay: adjust the analogue output signal: Dec/OK to decrease, Add/
Back to increase. The alarm relays will activate at the appropriate point.

a. Adj Loop mA: errors in the zero-level analogue output signal can be

adjusted by up to +/-2mA

Enter/Menu key Scroll key

Operation

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Hold Enter/Menu key for 2 seconds to enter menu or confirm changes to (eg)
alarm levels. After applying the magnet a short beep will indicate when 2
seconds is complete and the magnet can be removed. A long beep will then
confirm the change.

Hold the Enter/Menu key for 2 seconds to exit the menu from any point.

3.5 Zero

Note: Purge sensor with the appropriate gas before zeroing.

This function should only be carried out in ‘clean air’ and allows the XGard
Bright to be zeroed at any time.

To carry out the zero function, press ‘Next’. The zeroing screen will be displayed.

When zeroing is complete a pass or fail screen will be displayed. Press ‘OK’ to
return to the Main menu.

3.6 Calibrate

In main menu status chose ‘Cal gas’, the calibration level screen will be displayed.

To cancel the calibration, long press the right key ‘/Back’, The Main menu will be
displayed. Adjust the value shown to match the calibration gas concentration,
to continue, long press left key ‘/OK’ to accept the calibration level.

Connect the calibration cap to the XGard Bright and then connect the
appropriate gas cylinder to the adapter. When the gas reading is stable press the
right key ‘Mark’. To complete calibration press left key ‘DONE’.

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If the calibration was successful the success symbol will be displayed and
return to the main menu

3.7 Routine maintenance

Warning: prior to carrying out any work ensure local regulations
and site procedures are followed. Never attempt to unscrew the
lid or sensor retainer with power applied or when flammable gas
may be present. Ensure the associated control panel is inhibited
so as to prevent false alarms

Service and maintenance work should be carried out by Crowcon, an
approved service centre or by suitably qualified and trained personnel.

Site practices and conditions will dictate the frequency with which detectors
are tested and calibrated. Crowcon recommends that detectors are gas tested
at least every 6 months and re-calibrated as necessary.

Do not use damaged components or damaged electrochemical cells.

The sinter should be inspected regularly, and replaced if it has become
contaminated. A blocked sinter may prevent gas from reaching the sensor.

Ensure that the sensor retainer and junction box lid O-rings are present and in
good condition in order to maintain the ingress protection of the product.

3.8 Sensor replacement

The operational life of sensors depends on the application and amount of gas
to which the sensor has been exposed. Under normal conditions (6 monthly
calibration with periodic exposure to test gas) the typical life expectancy of
sensors is as follows::

• Oxygen sensors: 2 years

• Electrochemical toxic gas sensors: 2-3 years

• Pellistors: 3-5 years

• IR sensors: 10+ years

Operation

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Pellistors can suffer from loss of sensitivity when there is a presence of poisons
or inhibitors such as silicones, sulphides, chlorine, lead or halogenated
hydrocarbons. Crowcon use poison resistant pellistors to maximise operational
life, however in applications where such compounds are present we recommend
the use of IR sensors which are immune to such poisons and inhibitors.

Toxic and flammable gas sensor modules should be replaced when they fail
to calibrate or show a very low response to test gas. Oxygen sensors must be
replaced every two years.

To replace a sensor module:

1. Switch off and isolate power to the detector.

2. Loosen the grub-screw and unscrew the sensor retainer.

3. Carefully withdraw the sensor module by grasping the top and bottom of
the moulding.

4. Fit the replacement sensor (having checked that the part number matches
that stated on the detector junction box label). Take care to align the
locating pins correctly with the slots in the XGard Bright enclosure.

5. Re-fit the sensor retainer having first inspected the sinter to make sure that
it has not become contaminated. Contaminated sinters must be replaced
as any blockages may prevent gas from reaching the sensor. Ensure the
grub-screw is re-secured.

6. Zero and calibrate the new sensor.

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4. Specifications

Enclosure material ADC 12 aluminium alloy

Dimension 156 x 166 x 109mm

(6.1 x 6.5 x 4.3inch)

Weight Aluminium alloy 1kg (2.2lbs)

Ingress protection IP66

Cable entry 2x M20 (stopping plug fitted to left-side entry)

Power 10-30Vdc. 3W max

Electrical output 4-20mA current sink or source

RS-485 Modbus RTU
Relays: Alarm 1, Alarm 2, Fault
SPST contacts rated 1A 30Vdc
Sounder Out: MOSFET open-collector drive.
24Vdc (nominally), 1A maximum load.

Operating temperature -40°C to +70°C (-40°F to 158°F)

Note: sensor operating temperatures vary widely.
Refer to the sensor module datasheet or contact
Crowcon for specific sensor data.

Humidity 0 to 95% RH, non-condensing

Repeatability +/- 2% FSD

Zero drift +/- 2% FSD per year maximum

Approval codes ATEX and IECEx

Ex II 2 G Ex db IIC T6 Gb
Ex tb IIIC T80°C Db
Certificate numbers:
TUV 16 ATEX 7908 X
IECEx TUR 16.0035 X
Standards:
EN60079-0:2012 + A11:2013
EN60079-1:2014
IEC60079-0:2011 Edition 6
IEC 60079-1:2014 Edition 7

Zones Certified for use in Zone 1 and Zone 2 areas

EMC compliance EN50270:2015

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5. Warranty

Equipment leaving our works are fully tested and/or calibrated. If within
the warranty period of 1 year from despatch, the XGard Bright transmitter
is proved to be defective by reason of faulty workmanship or material, we
undertake at our discretion either to repair or replace it free of charge, subject
to the conditions below. Sensor module warranty periods are stipulated on
the specification sheet supplied with the module.

Warranty Procedure

To facilitate efficient processing of any claim, contact our customer support
team on 01235 557711 or [email protected] with the
following information:

To return the faulty goods you will need to obtain a Customer Returns
number (CRN) for identification and traceability purposes. Send in a
completed Warranty Claim form to the above email address to receive a CRN
reference to return the goods against, a copy of the form may be downloaded
from our website www.crowcon.com on the Download section of the Support
page or alternatively we can ‘email’ you a copy from the email address above.

Follow the instructions on the form please ensure you provide the following
details:

• Company name, your contact name, phone number, and email address as
well as your return address

• Product type, Part Number, Description, Quantity, Instrument serial
number(s), reported fault as per the form

• When returning the goods please also detail any included accessories

Instruments will not be accepted for warranty without a Crowcon
Returns Number (“CRN”). It is essential that the address label is
securely attached to the outer packaging of the returned goods and
the CRN reference is clearly identifiable on this label as well as your
returns paper work.

Warranty Disclaimer

The guarantee will be rendered invalid if the instrument is found to have been
altered, modified, dismantled, or tampered with. Any service by 3rd parties
not authorized & certified by Crowcon will invalidate the warranty on the
equipment. Use of alternative manufacturer’s sensors which have not been
approved by Crowcon will invalidate the warranty of the product as a whole.
The warranty does not cover misuse or abuse of the unit.

Warranty

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English

Any warranty on batteries may be rendered invalid if an unreasonable
charging regime is proven.

Sensor types have individually defined warranty periods which can differ from
the hardware warranty period. Crowcon reserve the right to amend warranty
periods for particular applications. Sensor warranty is rendered invalid if the
sensors have been exposed to excessive concentrations of gas, extended
periods of exposure to gas or have been exposed to ‘poisons’ that can
damage the sensor, such as those emitted by aerosol sprays.

Additionally see the Warranty Returns statement attached to Warranty Claim
Form.

Units returned to Crowcon as faulty and are subsequently found to be ‘fault
free’ or requiring service, may be subject to a handling, service and carriage
charge.

Repair Warranty

Product repairs within the warranty period will be free of charge for both
labour and parts. Should a full service / calibration also be due, then this is
agreed with the customer to be carried out at the same time as the repair and
the service element will be chargeable.

Warranty replaced parts will usually carry a further 12 month warranty at
Crowcon’s discretion up to the warranty of the original instrument being
repaired (sensor exclusions are available from Customer Support at the email
address above) for both parts and labour. Should a second but unrelated failure
occur outside of the product warranty, this will be subject to separate charges.

Crowcon accept no liability for consequential or indirect loss or damage
howsoever arising (including any loss or damage arising out of the use of the
instrument) and all liability in respect of any third party is expressly excluded.

The warranty and guarantee does not cover the accuracy of the calibration of
the unit or the cosmetic finish of the product. The unit must be maintained in
accordance with the Operating and Maintenance Instructions.

Our liability in respect of defective equipment shall be limited to the
obligations set out in the guarantee and any extended warranty, condition or
statement, express or implied statutory or otherwise as to the merchantable
quality of our equipment or its fitness for any particular purpose is excluded

Except as prohibited by statute. This guarantee shall not affect a customer’s
statutory rights.

Warranty

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Our postal address is:

Crowcon Detection Instruments Ltd. (UK Head Office)

172 Brook Drive
Milton Park
Oxfordshire
OX14 4SD

UK Office

Crowcon Detection Instruments Ltd
172 Brook Drive,
Milton Park,
Abingdon
Oxfordshire
OX14 4SD
Tel: [phone]
Fax: [phone]
Email: [email protected]
Website: www.crowcon.com

USA Office

Crowcon Detection Instruments Ltd
1455 Jamike Ave, Suite 100
Erlanger
KY 41018
Tel: [phone] or 1 800 527
6926
Fax: [phone]
Email: [email protected]
Website: www.crowcon.com

Netherlands Office

Crowcon Detection Instruments Ltd
Vlambloem 129
3068JG, Rotterdam
Netherlands
Tel: + 31 10 421 1232
Fax: + 31 10 421 0542
Email: [email protected]
Website: www.crowcon.com

Singapore Office

Crowcon Detection Instruments Ltd
Block 194, Pandan Loop
#06-20 Pantech Industrial Complex
Singapore 128383
Tel: + 65 6745 2936
Fax: [phone]
Email: [email protected]
Website: www.crowcon.com

China Office

Crowcon Detection Instruments Ltd
(Beijing)
Unit 316, Area 1, Tower B, Chuangxin
Building
12 Hongda North Road, Beijing Eco­nomic Technological Development Area
Beijing, China 100176
Tel: [phone]
Fax: [phone]
Email: [email protected]
Website: www.crowcon.com