Explosion Proof
Cameras
What is Explosion Proof (EX)?
Electric Powered Industrial Equipment, used in areas containing
explosive or flammable materials, must be designed to prevent
any operation of the equipment from igniting the atmosphere.
The design and construction of EX Equipment permit their
classification as Explosion Proof (EX) and enable their use in
explosive and hazardous atmospheres.
EXPLOSION PROOF ENCLOSERES
An EX Enclosure is a case or housing that has been tested
and approved to contain electrical components. The
strength of the enclosures must contain any internal
explosion. The enclosures have been hydrostatically tested
for internal explosive resistance to pressures in excess of UL
requirements without failure. Explosion Proof Enclosures
protect all cabling, wiring, and electrical components.
What is ATEX Explosion Proof (ATEX EX)?
ATEX EX (also referred to as Flameproof) is European
Explosion Proof equipment certified to ATEX standards.
Equipment and protective systems intended for use in
potentially explosive atmospheres must enclose all ignition
sources. ATEX EX is equipment that complies with ATEX
(94/9/EC Directive) (Definition in the following slide).
Approved by Internationally Recognized Testing Laboratories,
ATEX EX Equipment can be used in designated explosive and
hazardous atmospheres.
• What is the actual differences in Stainless Steel between the 316L or
304 housing?
• What are advantages of each housing type?
The main difference is on the percentage of nickel (Ni), the Ni in 316L is much
more than in the 304, so the 316L is much better suitable for corrosion proof
capability.
All products are for Class 1, Division 1.
Class 1 : means the explosive gas area
Division 1 : means the explosive gas always exist.
316L Stainless Steel is with Mo (molybdenum) inside and can withstand the
corrosion better than 304ss.
Example: For marine use, the 316L is recommended.
316L delivery time is rather longer than 304ss.
Abbreviation
Example:
The ATEX certificate for SVEX-Q18 is II 2G EExd tD II B +H2 T6
II 2G: Equipment group II (Equipment intended for use in areas other than
mines (above ground). In Places which explosive atmospheres caused by gas,
vapors and liquid) zone 1 (gas), equal US standard Class 1, Division 1.
EEx: EX mark
d: Flame proof structure
tD:Dust Explosion Proof
II: Equipment group II (Equipment intended for use in other areas than mines
(above ground) in areas which have explosive atmospheres, which is caused by
gases, vapors and liquids)
B+H2: gas group B plus hydrogen.
T6: Max surface temperature 85 degree.
• Group I – Electrical apparatus for mines susceptible to
firedamp (for use underground)
• Group II – Electrical apparatus for places with a potentially
explosive atmosphere, other than mines susceptible to
firedamp
General information
According to 94/9/EC, a device that is to be used in an environment at risk of
explosion may only be brought into the market if it satisfies the standards specified
in the norm.
Compared with the previous directives, it must be noted that the specification
refers not only to electrical but also to mechanical equipment Ex: PTZs.
Devices are divided into categories and groups to accurately define the conditions
of use. This definition is marked on the device and may appear as follows:
Example:
II 2G EEx IIC T6
Device
group
Category
Identifier
Explosion
group
Temperature
class
Device group
II , There are 2 groups of devices.
Devices of Group I, Category M are for use in underground mines and
their above ground equipment, which are at risk from firedamp and/or
inflammable dusts. (This is not given further coverage in this document).
All other areas at risk of explosion are combined in Device Group II.
Identifier
EEx defines that this is an electrical device.
d: Flame proof structure
tD: Dust Explosion Proof
Category
The categories define which zones the devices may be used in. The
classification states how frequently and in what concentration the
ignitable mixture occurs. Furthermore, differentiation is made as to
whether the hazard is due to gases, vapors and mists or due to dust.
Category 1
For devices, which guarantee a very high level of safety.
Intended for the case where an atmosphere at risk of explosion is to be
expected frequently or continuously.
Devices in this category can also be used in Category 2 and 3.
Inflammable gases, vapors or mists
Zone 0 equivalent to Category 1G
Area in which an atmosphere at risk of
explosion as a mixture of air and
inflammable gases, vapors or mists is
continuously or frequently present or
present for long periods.
Inflammable dusts
Zone 20 equivalent to Category 1D
Area in which an atmosphere at risk of
explosion in the form of a cloud of
inflammable dust contained in the air is
continuously or frequently present or
present for long periods.
Category 2
For devices, which guarantee a high level of safety.
Intended for the case where an atmosphere at risk of explosion is to be expected.
Devices in this category can also be used in Category 3.
Inflammable gases, vapors or mists
Zone 1 equivalent to Category 2G
Area in which an atmosphere at risk of
explosion as a mixture of air and
inflammable gases, vapors or mists can
form
occasionally
during
normal
operation.
Inflammable dusts
Zone 21 equivalent to Category 2D
Area in which an atmosphere at risk of
explosion in the form of a cloud of
inflammable dust contained in the air
can form occasionally during normal
operation.
Category 3
For devices, which guarantee a normal level of safety.
Intended for the case where an atmosphere at risk of explosion is to be expected
rather infrequently and, if so, for only short periods.
Inflammable gases, vapors or mists
Zone 2 equivalent to Category 3G
Area in which an atmosphere at risk of
explosion as a mixture of air and
inflammable gases, vapors or mists does
not normally occur at all or only for short
periods during normal operation.
Inflammable dusts
Zone 22 equivalent to Category 3D
Area in which an atmosphere at risk of
explosion in the form of a cloud of
inflammable dust contained in the air
does not normally occur at all or only for
short periods during normal operation.
Explosion group
Device group II is sub-divided into Explosion Groups A, B or C.
This classification is dependent on the typical material properties of the
gases and vapors that occur.
The hazard level of materials increases from Explosion Group IIA to IIC.
The requirements for the devices increase accordingly. If a device is
approved for IIC, it can be used for all other explosion groups.
Alternatively, the chemical formula or the name of the material can be
stated here.
Temperature class
It must be ensured that the ignition temperature of an inflammable
material is not reached during operation. Forthis purpose, the
maximum surface temperature of a device must be less than the
minimum ignition temperature.
For this reason, the maximum surface temperature of equipment
for use with inflammable gases, vapors or mists is specified in
temperature classes. For dusty environments, the maximum
surface temperature is specified in °C.
Temperature class
Maximum permissible surface temperature of the equipment (°C)
T1
450
T2
300
T3
200
T4
135
T5
100
T6
85
Explosion Proof Zone Summary
Explosion Proof Explanation
Gas
Dust
I.E.C.
N.E.C.
Zone 0
Class I, Division I
Zone 1
Class I, Division I
Zone 2
Class I, Division II
Zone 10
Class II, Division I
Zone 11
Class II, Division II
I.E.C.: International Electrotechnical Commission
N.E.C.: National Electrical Code, U.S.A.
Explosion Proof Explanation
Temperature in Celsius and
Fahrenheit
Products Applications
• On-shore Applications
1. Oil Refinery
2. Gas Station
3. Chemical Plant
4. Coal Mining
5. Military
• Off-shore Applications
1. Drilling Platform
2. Marine Vessels
Applications
Applications
Typical Analog System Connection
Typical Digital System Connection
Now several models of Veilux EX products are with ATEX
certificate and a complete product line is formed.
ATEX certificate Products List:
1. SVEX-HIR7 EX PTZ Camera
2. SVEX-Q18 EX Dome Camera
3. SVEX-W1301 EX PTZ Camera
4. SVEX-W125 EX Pan Tilt with Camera Housing
5. SVEX-T100A EX Camera Housing
6. SVEX-2028E EX Control Box
ATEX Products
SVEX-HIR7
SVEX-W1301
EX PTZ CAMERA
ATEX Certificate: Nemko 08ATEX1100
ATEX Standard: EN 60079-0: 2006, EN 60079-1:
2004, EN61241-0: 2006；EN61241-1: 2004
EX Mark:
+60℃
II 2 GD
Ex d IIC T6, Ta : -40℃ to
Ex tD A21 T80℃
27
ATEX Products
SVEX-HIR7
SVEX-1301
EX PTZ CAMERA
Main Features:
1. Integrated with pan/tilt, camera, camera
housing, telemetry board(receiver),
sunshield, wiper, auto heating system etc.
2. IR illuminator or laser can be optional for
different distance requirement on night
vision conditions.
3. 128 presets, 360°continuous pan and
+/-90°tilt rotation.
4. IP68
5. Variable rotation speed from 0~30°per
second.
6. -40℃ to +60℃ working temperature.
Dimensions
28
ATEX Products
SVEX-Q18
EX DOME CAMERA
ATEX Certificate: Nemko 11ATEX1022
ATEX Standard: EN 60079-0: 2009, EN 60079-1: 2007, EN60079-31: 2009
EX Mark:
II 2 GD
Ex d IIC T6 Gb, Ta : -15℃ to +60℃
Ex t IIIC
T80℃ Db
29
SVEX-Q18
EX DOME CAMERA
Key Features:
1. Unique dome structure design, easy
for maintenance.
2. On-screen-display function.
3. IP67
4. Available for both ceiling mounting
and stand mounting.
5. 128 presets, 360°continuous pan
and +90~-30°tilt rotation.
6. Support Pelco P/D protocols and
multiple baud rate.
7. 100~240VAC power supply.
8. IR illuminator can be optional.
Dimensions
30
ATEX Products
SVEX-W125
EX PT & CAMERA HOUSING
ATEX Certificate: Nemko 05ATEX1190
ATEX Standard: EN 50014: 1997 + A1: 1999 +
A2:1999 and CENELEC EN 50018: 2000
EX Mark:
II 2 G
EEx d IIC T6, Ta : -25℃ to
+60℃
31
ATEX Products
SVEX-125
EX PT & CAMERA HOUSING
Key Features:
1. Integration with P/T and camera
housing.
2. Flexible design for camera housing,
available for both block camera as
well as box camera and zoom lens.
3. Wiper, sunshield and auto heating
optional.
4. 24VAC or 220VAC power supply.
5. 350°pan and +/-90°tilt rotation.
Yellow part means available
room for inner camera.
。
32
ATEX Products
SVEX-T100A
EX CAMERA HOUSING
ATEX Certificate: Nemko 05ATEX1209
ATEX Standard: EN 50014: 1997 + A1: 1999 +
A2:1999 and CENELEC EN 50018: 2000
EX Mark:
+60℃
II 2 G
EEx d IIC T6, Ta : -25℃ to
33
ATEX Products
SVEX-100A
EX CAMERA HOUSING
Key Features:
1. Two versions design for camera
housing, available for both block
camera as well as box camera and
zoom lens.
2. Sunshield and auto heating
optional.
3. Electro-polish or corrosion proof
painting finish.
4. Thermal camera version available.
Yellow part means available
room for inner camera.
34
ATEX Products
EX CONTROL BOX
ATEX Certificate: Nemko 08ATEX1089
ATEX Standard: EN 60079-0: 2006 EN 60079-1:
2004
EX Mark:
II 2 G
Ex d IIB+H2 T6
35
ATEX Products
EX CONTROL BOX
Key Features:
1. Six cable entry for wiring.
2. Widely applications to install telemetry board, power supply, web
server, optic fiber T/R etc..
3. Electro-polish or corrosion proof painting finish.
4. Inner size: 240(L) x 210(W) x 100(H) mm.
36
ATEX Products
EX MONITOR
15 or 17 inch monitor to work with the video display in EX
site. BNC or VGA video signal can be optional for
monitors .
37
Non ATEX Products
SVEX-300A
EX CAMERA HOUSING
Key Features:
1. Two versions design for camera housing,
available for both block camera as well as
box camera and zoom lens.
2. Sunshield, wiper and auto heating available.
3. Electro-polish or corrosion proof painting
finish.
38
Non ATEX Products
SVEX-HSF
WATER COOLING HOUSING
Key Features:
1. SVEX-HSF is a Water Cooling Camera
Housing that is designed for special
environments, available for block camera as
well as box camera.
2. This product can be used under dusty and
high temperature conditions.
3. Environmental Temperature≤+250°C
4. Water Pump is required but not included
39
Non ATEX Products
EX JUNCTION BOX
Junction Box to connect the pipes
40
Non ATEX Products
EX Controller
EX QUAD
1. Control 4 pan/tilts, camera and
wiper system separately
2. Voltage control or RS485 control
3. Up/down/left/right, zoom, focus, iris
and wiper functions can be used by
buttons
1. 4-channel video signal input/1channel video output
2. 1/2/3/4 channel video display
41
REFERANCES