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Sound Emitter TYFONIC ET 500/4-1 Ex | Kockum Sonics

User Manuel



The Sound Emitter is designed for use in Ex Zone 1.


When installing and operating explosion protected electrical equipment, requirements for selection, installation and operation (e.g. IEC 60079-14) must be observed.


Before making any connections disconnect the power supply. Cable termination should be in accordance with specifications applying to the application. Kockum Sonics recommend that all cables and cores should be fully identified. Ensur that only the correct certified glands are used and that the assembly is shrouded and correctly earthed. Ensure that all nuts, bolts and fixings are secure also not used.

Input connections

The cable from amplifier is to be connected in the Exe junction box in the lowest module of the sound emitter. Terminate the cores to the terminals 1, 2, 3 and 4. Fasten the screws secure even not used.

TYFONIC ET 500/4-1 Ex


Acoustical CharacteristicsRating
Sound Pressure Level @ 1 mLpA 122 dB
DirectivityOmni directional radiation
Fundamental Frequency370 Hz
Frequency Response, f240-2500 Hz +/- 3 dB
Electrical CharacteristicsRating
Number of sound modules and compr. elements4 pcs
Rated / max voltage / 2 drivers / All clear45 V rms
Resistance per element6,2 ohm
Cable glandM20
Cable diameter6…12 mm
EarthingM8 mast foot
Environmental CharacteristicsRating
Material of sound moduleAnodized aluminum
Colour of sound moduleNatural
Material, mast footGalvanized steel
Suitable mast pole3” pipe (outer diameter 89 mm)
Operating Temperature- 50 to + 50°C
Storage Temperature- 50 to + 85°C
Degree of ProtectionIP 66
Protection classEEx de IIB+H2 T4
Group II
Category 2 G
Atmosphere IIB + H2
Zone 1
Temperature classT4
Size and WeightRating
Diameter500 mm
Height1400 mm
Weight42 kg
Norm Conformity
94/9/EC, 73/23/EEC and 89/336/EEC
ATEX codingTYFONIC ET 500/4-1 Ex
EU Explosive atmosphere symbol
Equipment group II
Equipment category 2
Atmosphere G
high level of protection
Zone 1 - hazardous atmospheres may be present under normal operation
but only for short periods of time.
Certification codeEEx de IIB T4
Certified according to
European Ex-standard
Protection conceptEx d – flameproof enclosure
Protection conceptEx e – increased safety
Gas groupIIA and IIB (not IIC) + H2
Temperature classT1, T2, T3, T4 (not T5 and T6)

The product label also carries the mark:
This signifies unit compliance to the relevant European directives, in this case 94/9/EC.


Use the three lift eyebolts on the top of the sound emitter to place it. The sound emitter ET 500 has a mounting socket for 3” pole (o.d. 89 mm). Fasten the four bolts on the socket and make sure that the counter nuts are secured. Electrical installation in hazardous area must comply with EN 60079-14. Grounding of the equipment has to comply with the ATEX directive. If risk for lightning, connect to building lightning protection with min 16mm2. Local regulations mey be applicable.


Two 17 mm ring spanners are required to fix the locking screws and locknuts. The cables for electric terminals shall be stripped back 8 mm. A suitable screwdriver blade for the terminal screws is 4.0 x 0.8 mm.


The location of the sound emitter is of decisive importance for the warning effect, so it should be located high up and not in a position where adjacent buildings or heights screen the sound. Nor should it be located so high up so that part of the sound will disappear upwards.

The sound emitter should be located on top of the selected building, and not closer than 2 m to the chimney. Buildings located close to main road crossroads are suitable locations, since the sound will travel in a straight line along the streets.

It is important that the sound emitter should be located so high above the ground/street level that it does not cause hearing damage to people who are close to the sound emitter when the alarm is sounded. Nobody should be subjected to sound pressures exceeding 110 dB. As a rule, a sound emitter should not be located lower than 10 m above ground level.

Install the following warning sign beside each installation:


Sign to be put up clearly visible beside the sound emitter.


During the working life of the sound emitter, it should require little or no maintenance. However the amplifier performs impedance tests of the compression drivers automatically once a day. Inspection and maintenance of electrical installations in hazardous area must comply with EN 60079-17.

Troubleshooting guide

The following checklist will assist in the correction of most problems, which you may encounter with your unit. Before going through the checklist below, refer to the connection and operating procedures.

SymptomCause / solution
No sound.The amplifier is in operational mode.
> Check the amplifier.
Sound not as loud as usually.One channel in the amplifier is broken.
> Check the amplifier. Open circuit in one compression driver element.
> Check the service menu at the amplifier and release hardware
test, compression drivers.

Spare parts

Compression driver element, DST-40 EExeN IIB, 8 ohm. Ref no. 20620026


The unit shall be handed over to the applicable collection point for the recycling of electrical and electronic equipment. By ensuring this product is disposed of correctly, you will help prevent potential negative consequences for the environment and human health, which could otherwise be caused by inappropriate waste handling of this product. The recycling of materials will help to conserve natural resources.