GST DC-9404(IS), DC-9403(IS) User Manual

30309767 Issue 1.04

Features

 High bright red LEDs are used as light source.
 Sound level: 85dB (A weighted, 3m in front).

Description

DC-9404(IS) Intrinsically Safe Conventional Sounder
and DC-9403(IS) Intrinsically Safe Conventional
Sounder Strobe (hereinafter called the
sounder/sounder strobe) is a kind of audible/audible
and visual alarm device used to warn people in field

when fire occurs. It’s applicable to zone 1 and zone 2

of areas with explosion-proof requirement in
petroleum and chemical industries. It can match with
I-9333 Interface.
Base with 25.5mm high are available.

Connection & Wiring

Terminals on the base are shown in Fig. 2.

5mm

55mm

80mm

Arch knock off Hole

G

1

K

1

D

D

2

1

2

Z

2

K

S

Z

Water leak hole

Fig. 1 Fig. 2

D1+ (9), D2- (7): Connected with I-9333 Interface,
polarized.
Intrinsic Safety Parameters for D1/D2: Ui=28V，
Ii=93mA，Ci=0，Li=0，Pi=0.65W
D1 is connected with (3) of the safety barrier and D2
to (4).

Recommended Wiring

Intrinsically safe cable with cross section not less
than 1.5mm2, subject to local codes.。

Installation

Warning: Before installing the device, disconnect
the power from the loop.

 Before installation, make sure the enclosure is

in good condition and marking complete.

 When the sounder/sounder strobe is surface

mounted, it should be placed 0.2m from the ceiling
for normal space height. When conduit is embedded,
the base can be mounted on the electrical box.
Its mounting method is shown in Fig. 3. Water leak
hold should installed downward.

Conduit

Electrical Box

Wire hole

Water leak hole
should downward

Fig. 3

 The base and the sounder/sounder strobe are

twisted together. When mounting, remove the
sounder strobe, thread cables through the cable
entry in the base and connect with corresponding
terminals, then twist the sounder/sounder strobe
onto the base.

 If the sounder/sounder strobe is required

anti-removal, knock down the arch knock-off hole as
shown in Fig. 1 and fix it with ST2.9×6.5 tapping
screws (in this case, it must be removed by a special
tool).

Application

The sounder/sounder strobe can match I-9333
Interface to form an intrinsically safe system. The
system wiring is shown in Fig. 4.

D1 D2 Z1 Z2

I-9333 Circuit
Board

I-9333 Interface

24VDC

Fire Alarm Control Panel

L-

L+

2(-)

1(+)

GST-AS-200 Zener

Safety Barrier

Safety Area

4(-)

3(+)

Hazardous Area

1

Z

2

Z

K

2

S

D

2

G

1

K

D

1

Fig. 4

DC-9404(IS)

Intrinsically Safe Conventional Sounder

DC-9403(IS)

Intrinsically Safe Conventional Sounder Strobe

30309767 Issue 1.04

Cautions

1． I-9333 Interface should be installed in safety

area, the wires of "Safety Area" should be
separated from those of "Hazardous Area", and
be kept a certain distance (at least 50mm).

2． The safety barrier should be well grounded.

The screws should not be loose. Ground

resistance should not be over 1Ω. The

parameters assigned in the intrinsically safe
loop should not be over the specified value, that
is, the capacity assigned among cables should
not be over 0.083μF, the inductance assigned
not over 4.1mH.

3． During maintenance, products passing the

explosion-proof test should not be replaced and
parts and structure affecting explosion-proof
functions should not be modified.

Limited Warranty

GST warrants that the product will be free from

defects in design, materials and workmanship during
the warranty period. This warranty shall not apply to
any product that is found to have been improperly
installed or used in any way not in accordance with
the instructions supplied with the product. Anybody,
including the agents, distributors or employees, is
not in the position to amend the contents of this
warranty. Please contact your local distributor for
products not covered by this warranty

Specification

Power Loop
voltage when
activating

24VDC（16VDC～28VDC）

Power Loop
voltage in standby
state

7VDC（5VDC～8VDC）

Standby current

≤5mA

Active current

≤50mA

Wiring

Polarized two-wire with I-9333
Interface

Sound Level

Sound level: 85dB~115dB (A
weighted in 3m front).

Flashing
Frequency

1.4×(1±20％)Hz（DC-9403(IS)）

Tone Modification
Period

0.7s±20％

Explosion-proof
marking

ExibⅡCT6 Gb

Explosion-proof
Certificate
Number

CE17.2192 (DC-9404(IS) )
CE17.2190 (DC-9403(IS))

Security Barrier
Parameters
GST-AS-200

U0＝28V, I0＝93mA
Ingress Protection
Rating

IP33

Operating
Temperature

-10℃～+55℃
Relative Humidity

≤95%, non condensing

Application

Indoor

Material and Color
of Enclosure

ABS, red. 107Ω≤surface
resistance≤109Ω, plexiglass in
front

Dimension (D×H)

ф110mm×95.9mm

Mounting Hole
Spacing

55mm～80mm

Weight

DC-9404(IS)：About 312.2g
DC-9403(IS)：About 322.2g

.

This Data Sheet is subject to change without notice. Please contact GST for more information or questions.

Gulf Security Technology Co., Ltd.

No. 80, Changjiang East Road, QETDZ, Qinhuangdao, Hebei, P. R. China 066004

Tel: [phone] Fax: [phone]

[e-mail] www.gst.com.cn