Table des Matières
Publicité
A pplication
The
signalling
hooter
was developed for warning, calling
and indicat ing purposes in areas
with ex plosive atmospheres in
group II and for rough ambient
conditions. Thanks to its compliance
with
the
explosion
II 2 G Ex de IIC T5 / T6, this signal-
ling device can be used in areas
with explosive atmo spheres in zone 1
and 2. The signalling hooter pro -
duces a sound volume of approx.
1 05 dB(A) at 1 meter distance.
The characteristic hooting sound
can be clearly heard above any
other higher-frequency sounds in
the area. The signalling hooter is
available in most of the common
voltages. The dHHR
telephone calling relay and repro -
duces the signals in the pulse rate
of the overriding telephone call.
Design
The explosion protection is given
through the flameproof chamber
and the chamber „increased safety".
The flameproof chamber contains
the electromagnetic drive system
and, for the dHHR
, an additional
telephone calling relay . The signal
membrane is mounted outside of
the flameproof room beneath a clo-
sing cap with the appropriate sound
control. The enclosure is made
completely of plastic thus guarante-
eing protection from corrosion and
insulation class II.
Equipotential bonding is not ne ce s -
Technical specification
Enclosure
Colour of enclosure
Insulation class
Protection category
Cable diameter
Cable glands
Explosion category
Operating temperature
Storage temperature
Operating mo de
Operating utilization position
Operating conditions
Connecting terminals
Sound pressure level
EC-type-examination certificate
Dimensions
Weight
sary . Furthermore the construction
dHH
is low-weight and highly robust.
All d.c. versions are equipped
with an electronic contact breaker
which
service life compared with other
commercially available devices.
category
R ecycling
The device can be disposed of
completely as electronic waste.
When the device is disassembled,
plastics, metals and electronics
are to be disposed of separately .
A ssembly
The signalling hooter is suitable for
either wall or ceiling mounting.
Please refer to Page 5 for mounting
dimensions. All fixing elements and
comprises a
bases must bear the weight of the
device (approx. 5.5 kg). The wall
fixtures are part of the scope of
delivery , (including assembly mate rial)
according to Figure 1 on page 5.
Make sure the catches of the safety
plate fit in the openings in the wall
bracket.
Connecting and adjusting
The device may only be connected
and adjusted by qualified personnel.
The regulations and instructions of
the respective country regarding
connection to the public telephone
network and/or to private branch
exchanges (PBX) have to be consi-
dered. The following re gulations
concerning connection and adjust-
ment are to be observed. Regula-
Fiberglass reinforced polyester
grey in electrostatic conducting enclosures (R ≤1 0
grey for non-conducting enclosures (R ≥1 0
II (no equipotential bonding necessary).
IP66 (acc. IEC 529/EN60529)
Ø 5.5 to 1 3.0 mm
1 x M20 x 1 .5 and vent plugs M20 x 1 .5
optionally 2x cable entry M20 x 1 .5 for design dRGH21
II 2 G Ex d e IIC T5, T6 Gb
II 2 D Ex tb IIIC T95°C, T80°C Db
-20°C to +75°C (T5) / -20°C to +70°C (T6)
-20°C to +80°C
Continuous operation as per IEC34; DIN EN 60034-1 ; VDE 0530 L evel S1
As required via rotatable bracket mounting
Sound outlet preferably to the front or downwards
Inside or outside
1 .5 mm
stranded wire / 2.5 mm
2
approx. 1 05 dB(A) at 1 meter distance
PTB 01 ATEX 1 133
Approx. 21 0 x 1 90 x 1 90 mm
Approx. 5.5 kg
considerably
increases
solid wire
2
tions regarding connection to the
mains must also be observed.
Mains connection at terminals 1
and 4. Connection to other devices
at terminals 2 and 3 (see Fig. 2 on
page 5). When using the telephone
calling relay connect mains to termi-
nals 1 and 2 and the telephone
connection to terminals 3 and 4
(see Fig. 3 on page 5).
Use only suited tools for installing the
cable glands. The cable connection
is suited only for permanent cables.
R emarks
The device may only be connected
and placed into operation by a qua-
lified person. This also applies to
any repairs
carried out using
original parts. The use of other spare
parts can lead to material damage
and injury to persons.
N.B. Each signalling horn is ad -
justed in the factory . Should the
sound alter after a certain number
of operating hours, a qualified
person can adjust the tappet in the
device as follows (see the remarks
on adjustment on page 5):
• Open the device
WARNING: live parts
• Apply rated voltage
• Adjust item 1 approx. 35 cm
distance
• Release item 3
• Turn item 2 until sound is loud
and clear (no rattling)
• Tighten item 3 again
• Close device
Ω)
9
Ω)
9
3
Publicité
Table des Matières
