GST C-9404(Ex), C-9403(Ex) Quick Start Manual

The Intelligent Solution

Features

 High bright red LEDs are used as light source.
 High sound level.
 Circuitry and base are twisted together.
 Standard: EN 54-3.

Description

C-9404(Ex) Explosion Proof Conventional
Sounder and C-9403(Ex) Explosion Proof
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.

Both shallow base with 25.5mm high and deep base
with 40mm high are available, it employs deep base
if there is no special statement in this manual.

Explosion Proof Conventional Sounder Strobe

C-9404(Ex)

Explosion Proof Conventional Sounder

C-9403(Ex)

Knock-off Hole

Conduit

Electrical Box

sounder/Sounder Strobe

Connection & Wiring

Terminals on the base are shown in Fig. 2.

97.5mm

5mm

Arch knock off Hole

80mm

55mm

D

2

S

D

1

G

1

K

Z

2

Z

1

2

K

Fig. 1 Fig. 2

D1+(9), D2- (7): Connected with I-9333
Interface, polarized. 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

 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.
When conduit is surface mounted, the deep base
should be adopted. Knock the knock-off hole, then
connect the conduit with it. The mounting hole
spacing and mounting direction are shown in Fig. 2.
Mounting method is shown in Fig. 3a and Fig. 4.
When the shallow base is required, the
sounder/sounder strobe only adopts conduit
embedded. Its mounting method is shown in Fig. 3b.

Fig. 3a

Conduit

Electrical Box

sounder/Sounder Strobe

Fig. 3b (shallow base)

Conduit

sounder/Sounder Strobe

Fig. 4

 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.

30302556 Issue 2.03

 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

Specification

Power Loop
voltage when
activating
Power Loop
voltage in standby

24VDC（16VDC～28VDC）

7VDC（5VDC～8VDC）

state

the sounder/sounder strobe can match I-9333
Interface to form an intrinsically safe system. The
system wiring is shown in Fig. 5.

Safety Area

Hazardous Area

standby current ≤5mA
active current ≤50mA
Wiring Polarized two-wire with I-9333

Interface

Sound Level See the above sound level data

table

I-9333 Interface

I-9333 Circuit
Board

D1 D2 Z1 Z2

24VDC

Fire Alarm Control Panel

1(+)

L+

NF928 Zener

2(-)

Safety Barrier

L-

3(+)
4(-)

S

D

D

1

2

G

1

K

1

2

Z

2

Z

K

Flashing
Frequency
Tone Modification
Period
Explosion-proof
marking
Security Barrier

1.4×(1±20％)Hz（C-9403(Ex)）

0.7s±20％

ExibⅡCT6

U ＝28V，I ＝93mA

0 0

Parameters

Non-intrinsincally Safe Loop

Intrinsincally Safe Loop

（NF928）
Ingress Protection

IP33

Rating

Fig. 5

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 0.02μF, the inductance assigned

not over 2mH.

Operating

-10℃～+50℃

Temperature
Relative Humidity ≤95%, non condensing

Material and Color

ABS，red（PANTONE 1795C）

of Enclosure
Dimension
(L×W×H)
Mounting Hole

ф110mm×97.5mm (deep base)
ф110mm×83mm(shallow base)

55mm～80mm

Spacing
Weight C-9404(Ex)：

About 340g(deep base)About

312.2g(shallow base)
C-9403(Ex)：
About 350g(deep base)About

322.2g(shallow base)

3． During maintenance, products passing the

explosion-proof test should not be replaced and

Limited Warranty

parts and structure affecting explosion-proof

functions should not be modified.

Sound Level Data (Complies to EN54-3)

Fixed tone, Maximum Volume

Angle Horizontal Vertical

18V 28V 18V 28V

15° 74.47 78.16 71.95 75.55

45° 81.85 86.44 82.03 85.36

75° 88.06 92.47 87.88 91.66

105° 88.15 91.93 89.14 92.92

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.

135° 80.50 85.54 82.48 87.07
165°

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

GST China
Gulf Security Technology Co., Ltd.

No. 80, Changjiang East Roa ,
QETDZ, Qinhuangdao, Hebe
P. R. China 066004
Tel: [phone]
Fax: [phone]

[e-mail]
HTUwww.gst.com.cnUTH

62.32 66.37 73.93 78.07

d
i,

GST UK
Global System Technology PLC

Lion Court, Staunton Harold Hall,
Melbourne Road, Ashby de la Zouch,
Leicestershire, England LE65 1RT
Tel: [phone]
Fax: [phone]

[e-mail]
HHTUwww.gst.uk.comUTHH

GST Dubai
Global System Technology PLC

PO Box 17998 Unit ZA04
JEBEL ALI Free Zone,
Dubai, UAE
Tel: [phone]
Fax: [phone]

[e-mail]
HHTUwww.gst.uk.comUTHH

30302556 Issue 2.03