Azbil HGC303 User manual

HGC000001000P
CM2-HGC100-2001
Heat Value Gas Chromatograph
Model HGC303
User's Manual

NOTICE
While the information in this manual is presented in good faith and
believed to be accurate, Azbil Corporation disclaims any implied
warranty of merchantability or fitness for a particular purpose and
makes no express warranty except as may be stated in its written
agreement with and for its customer.
In no event shall Azbil Corporation be liable to anyone for any indirect,
special or consequential damages. is information and specications
in this document are subject to change without notice.
© 2009-2018 Azbil Corporation All Rights Reserved.

Safety
Safety symbols
Be sure to correctly operate the model HGC303 while strictly observing the
safety precautions provided in this manual-especially the Warnings and Cautions
indicated by the symbols as shown below.
The descriptions of the Warning and Caution signs used in this manual are as
follows.
WARNING
The Warning sign means that serious personal injury, even death, could result if the instructions
given are not strictly observed.
CAUTION
The Caution sign means that light personal injury and/or equipment damage could result if the
instructions given are not correctly observed.
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Hazardous Areas Certifications
The model HGC303 complies with the type of protection, which based on the
following standards.
(1) ISSeP/ATEX Flameproof Certication
0344
II 2 GD
EEx d II C T6 -10°C ≤ Tamb ≤ +50°C IP65
ISSeP14ATEX0007X
Special conditions for safe use (symbol X)
e fastening screws of this apparatus are made of stainless steel and have a
yield stress of 500 N/mm2.
(2) FM Explosionproof / Flameproof Approval
Explosionproof for Class I, Division 1, Groups C and D, T4
Flameproof for Class I, Zone 1, AEx d IIB T4
Dust-ignitionproof for Class II and III, Division 1, Groups E, F and G, T4
(3) NEPSI Flameproof Certications
Flameproof
Ex d IIC T6 Gb at -10°C ≤ Tamb ≤ +50°C Dust-Ignition-proof
Ex tD A21 T85°C
erefore, the model HGC303 can be installed in various hazardous locations.
However, an explosion-protected electrical apparatus requires special care. Please
read all instruction and safety notes before installation.
WARNING
NEVER open the terminal box cover while the model HGC303 is energized in a hazardous location.
CAUTION
Use the model HGC303 only in an ambient temperature of -10 to 50°C (14 to 122°F)
CAUTION
Take precautions to prevent corrosion, deformation or damage to the housing or terminal box
cover.
CAUTION
See that all conduits are properly sealed. Otherwise, the model HGC303 cannot with- stand the
pressure that can result from explosion of an explosive gas inside the housing. Also, the model
HGC303 cannot prevent the explosion of any external explosive gas.

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(1) Installation for ISSeP/ATEX Flameproof Apparatus
1. General
1.1 e apparatus protected by the ameproof enclosure in accordance with EN
60079-1 can be installed in such hazardous areas, for which the apparatus has
been certied, as an explosive atmosphere containing ammable substances in
the form of gas, vapour, mist or dust may be present.
Note: e apparatus has been certied to comply with EN 61241-0, EN 61241-1
(dust ignition protection).
1.2 The apparatus enclosure must be kept closed in the hazardous areas when
the apparatus is energized because the internal circuit of the apparatus is
capable of igniting the explosive atmosphere. (Never connect any hand-held
communicator to the apparatus terminals by opening the cover, except while no
explosive atmosphere is present.)
1.3 It is required to connect the external earthing terminal of the apparatus to
the equipotential bonding system which includes protective conductors,
metal conduits, metal cable sheaths, steel wire armouring and metallic parts of
structures, but does not include the neutral conductors of the power systems.
Note: e protective conductor to which exposed conductive parts of equipment
(machines, apparatus, devices, components and instrumentation thereof)
are connected, must be separated in the hazardous area from the neutral
conductor, and must be connected to the power systems earth point in the
non-hazardous area, if the power system is directly earthed.
For external earthing and bonding of the apparatus it is recommended to use
a cable lug so that the conductor is secured against loosening and twisting and
that the contact pressure is permanently secured.
1.4 Either cable systems (cable entry systems) or conduit systems can be employed
for wiring of the apparatus in the hazardous areas (see 2 or 3).
1.5 Non-sheathed single core cables are not permitted for live conductors unless
they are installed inside enclosures or conduit systems.
1.6 Conduits and, in special cases, cables (for example, where there is a pressure
difference) must be sealed so as to prevent the passage of the explosive
atmosphere.
1.7 Further information concerning installation and maintenance of apparatus
is given by relevant clauses of the following documents.
EN 60079-14 Electrical apparatus for explosive gas atmospheres
Part 14: Electrical installations in hazardous areas other than mines
EN 60079-17 Part 17:Inspection and maintenance of electrical installations in
hazardous areas.
EN 50281-1-2 Electrical apparatus for use in the presence of combustible dust
Part 1-2: Electrical apparatus protected by enclosures
-- Selection, installation and maintenance

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2. Cable systems
2.1 Thermoplastic sheathed cables, thermosetting sheathed cables, or
elastomeric sheathed cables can be selected for xed wiring in the hazardous
areas.
2.2 Flameproof cable entry devices (cable glands) certified to comply with EN
60079-1 and appropriate to the type of cable employed, must be used for the
connection of cables to the apparatus.
3. Conduit systems
For conduit systems, relevant national standards or codes of practice are followed
prior to the following recommendations.
3.1 Screwed heavy gauge steel, solid drawn or seam welded conduit, or exible
conduit for protection of cables in explosive atmospheres (see ISO 10807) can
be selected for xed wiring in the hazardous areas.
3.2 Conduit must be threaded for connection to permit the full engagement of
ve threads.
3.3 Either conduit entry devices or sealing devices such as stopping boxes are
provided at the wall of the apparatus enclosure to limit the pressure piling eect
and to prevent hot gases from entering the conduit system from the enclosure
containing a source of ignition. Each type of both the devices must be certied
to comply with EN 60079-1.
3.4 The stopping boxes, if used, are filled with a compound which does not
shrink or setting and is impervious to, and unaected by, chemicals found in
the hazardous area. e depth of the compound in the stopping box is at least
equal to the internal diameter of the conduit, but in no case less than 10 mm.
3.5 When the conduit contains three or more non-seathed single or multi-core
cables, the total cross-sectional areas of cables, including insulation, are not
more than 40% of the cross-sectional area of the conduit.
4. Installation in explosive atmospheres caused by air / dust
mixtures
4.1 Conduit or cable glands, if employed to connect cables to the apparatus, must
be selected and used in such a way that an IP6X protection (dust-tight) is
guaranteed.
4.2 It is recommended to maintain the apparatus so that the dust layer will not
exceed a thickness of 5 mm.
Note: Where the ignition temperature of a dust layer up to 5 mm thickness is
equal to, or higher than, the value that is obtained by adding 75K to the
maximum surface temperature of the enclosure “T...°C” as marked on the
apparatus, the apparatus is incapable of causing ignition of the dust layer.
(T...°C is based on the maximum ambient temperature)

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(2) Installation for FM Explosionproof / Flameproof Apparatus (in
accordance with NEC)
CAUTION
• Install the apparatus only in hazardous (classified) locations for which the apparatus has been
approved.
• Seal each conduit entering the apparatus enclosure within 18 in.(457 mm) from the enclosure.
• Do not open the apparatus enclosure when an explosive atmosphere is present.
Fig. S-1 An example of conduit seal (with stopping plug)
Fig. S-2 An example of conduit seals (without stopping plug)

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1. Class I, Division 1 locations
1.1 Wiring methods
• readed rigid metal conduit, threaded steel intermediate metal conduit,
or Type MI cable with termination ttings approved for the location, can
be employed
• readed joints must be made up with at least ve threads fully engaged.
• Boxes, ttings, and joints must be approved for Class I, Division 1.
1.2 Sealing
• Each conduit entering the apparatus enclosure is required to be sealed
within 18 in. (457 mm) from the enclosure.
• e sealing of each conduit can be provided with a sealing tting approved
for class I locations.
• Sealing compound must be approved and must not have a melting point of
less than 93° (200°F).
• e minimum thickness of the sealing compound should not be less than the
trade size of the conduit and, in no case, less than 5/8 in.(16 mm).
• Splices and taps cannot be made in the ttings.
2. Class I, Division 2 locations
2.1 Wiring methods
• readed rigid metal conduit, threaded steel intermediate metal conduit,
enclosed gasketed busways, or Type PLTC cable in accordance with the
provisions of remote-control, signaling, and power-limited circuits (see
NEC, Article 725), or Type ITC cable in cable trays, in raceways, supported
by messenger wire, or directly buried where the cable is listed for this use;
Type MI, MC, MV, or TC cable with approved termination ttings can be
employed.
• Boxes, ttings, and joints are not required to be explosionproof.
2.2 Sealing
• Each conduit entering the apparatus enclosure is required to be sealed as
shown in 1.2.
3. Class II, Division 1 locations
3.1 Wiring methods
• readed rigid metal conduit, threaded steel intermediate metal conduit,
or Type MI cable with termination ttings approved for the location, can
be employed.
• Boxes and ttings must be dusttight.
3.2 Sealing
• Where a raceway provides communication between the apparatus enclosure
and an enclosure that is not required to be dust-ignitionproof, suitable means
must be provided to prevent the entrance of dust into the dust-ignitionproof
enclosure through the raceway. One of the following means can be used: (1)
a permanent and eective seal; (2) a horizontal raceway not less than 10 
(3.05 m) long; or (3) a vertical raceway not less than 5  (1.52 m) long and
extending downward from the dust-ignitionproof enclosure.
• Seals are not required to be explosionproof.

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4. Class II, Division 2 locations
4.1 Wiring methods
• Rigid metal conduit, intermediate metal conduit, electrical metallic
tubing, dust-tight wireways, or Type MC or MI cable with approved
termination fittings, or Type PLTC in cable trays, or Type ITC in cable
trays, or Type MC or TC cable installed in ladder, ventilated trough,
or ventilated channel cable trays in a single layer, with a space not less
than the larger cable diameter between the two adjacent cables, can be
employed.
• All boxes and ttings must be dusttight.
4.2 Sealing
• Sealing means must be provided as shown in 3.2.
5. Class III, Division 1 locations
5.1 Wiring methods
• Rigid metal conduit, rigid non-metallic conduit, intermediate metal
conduit, electrical metallic tubing, dust-tight wireways, or Type MC or
MI cable with approved termination ttings, can be employed.
• All boxes and ttings must be dusttight.
5.2 Sealing
• Sealing means are not required.
6. Class III, Division 2 locations
6.1 Wiring methods
• Wiring methods must comply with 5.1.
6.2 Sealing
• Sealing means are not required.

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(3) NEPSI Flameproof and Dust Certications
Heat Value Gas Chromatograph model HGC303, manufactured by Azbil
Corporation, has been approved by National Supervision and Inspection Center for
Explosion Protection and Safety of Instrumentation (NEPSI) in accordance with
the following standards:
GB3836.1-2010 Electrical apparatus for explosive gas atmospheres
Part 1: General requirements
GB3836.2-2010 Electrical apparatus for explosive gas atmospheres
Part 2: Flameproof enclosure “d”
GB12476.1-2013 Electrical apparatus for use in the presence of combustible dust
Part 1: General requirements
GB12476.5-2013 Electrical apparatus for use in the presence of combustible dust
Part 5: Protection by enclosure “tD”
The apparatus are approved with Ex marking of Ex d IIC T6; Ex tD A21 T85°C
IP65. e certicate number is GYJ15.1324X.
1. Requirements for safe use
1.1 e external earthing terminal shall be connected to the ground reliably at site.
1.2 e ambient temperature range is -40°C to +60°C.
1.3 e cable entry holes have to be connected by means of suitable cable entries
with type of protection of Ex d IIC and Ex tD A21, which are covered by a
separate examination certicate. Unwanted entry holes shall be blocked by blind
plugs. Aer installation of the cable entry, the whole apparatus shall reach IP65.
1.4 Rated supply voltage: (24±15%)Vd.c
1.5 e warning “Do not open while the circuit is alive” must be obeyed when the
product is used in the explosive gas area.
1.6 Regular cleanness shall be conducted to avoid the deposit of the dust.
1.7 The gas that may cause the corrosion effect to the aluminum alloy shall be
excluded at site.
1.8 End users are forbidden to change the configuration to ensure the explosion
protection performance of the product.
1.9When installation, operation and maintenance the product, users should
comply with the relevant requirements of the product instruction manual and
the following standards:
GB3836.13-2013 “Electrical apparatus for explosive gas atmospheres Part 13: Repair
and overhaul for apparatus used in explosive gas atmospheres”
GB3836.15-2000 “Electrical apparatus for explosive gas atmospheres Part 15:
Electrical installations in hazardous area (other than mines)”
GB3836.16-2006 “Electrical apparatus for explosive gas atmospheres Part 16: Inspection
and maintenance of electrical installation (other than mines)”.
GB50257-1996 “Code for construction and acceptance of electric device for
explosion atmospheres and fire hazard electrical equipment
installation engineering”
GB12476.2-2010 “Electrical apparatus for use in the presence of combustible dust
Part A-1: Electrical apparatus protected by enclosures and surface
temperature limitation-Selection, installation and maintenance”
GB15577-2007 “Safety regulations for the protection of dust explosion”.
2. Special condition for safe use
e cover has at least 7.9 engaged threads.