Explosion-proof sound-and-light signaling device PGSK01 (EV-4050-HOOTER-122) (explosion-proof combined siren+beacon)

Explosion-proof sound-and-light signaling device PGSK01 combines functions of audible and visual alarm.  Explosion-proof sound-and-light signaling device PGSK01 is intended for continuous round-the-clock operation in a stand-by mode (possibility to send audible and visual alarm signals) in hazardous areas of industrial and construction facilities where flammable gases and dust are present. Maximum level of sound pressure is 106 Db, 102 Db (for mining version).

Application of PGSK01 explosion-proof sound-and-light signaling devices with a high level of output signal in large and/or noisy areas guarantees effective signalization with a powerful and precise level of signal. Application of signaling devices with high level of sound pressure is economically reasonable since the number of signaling devices is reducing, hence number of cables and terms of installation.

Scope of application – underground mines and pits hazardous with gas (methane), coal dust; outdoor and indoor hazardous areas as per explosion protection marking, GOST 30852.13-2002 (IEC 60079-14:1996), areas hazadous with  combustible dust ignition, as per GOST IEC 61241-3-2011, dangerous production facilities of I, II, III, IV hazard class supervised by Rostechnadzor of the RF and national technical supervision bodies of the Customs Union and CIS countries.

PGSK01

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– TU 3400-006-72453807-07

Device name

Lamp type: Xenon – K; LED – SC

Lamp color: Red – K; Yellow – ZH; Green – Z; Blue – S

Supply voltage for xenon lamp: 12 V - 12DC; 24 V - 24DC; ~220 V - 220АC Supply voltage for LED lamp: /~12/24 V - 12АС/DC; /~220 - 220AC/DC

Type of lighting: flashing - M; constant (only for LED lamp) - P

Dimension type of cable gland

Options, accessories and versions

Example: PGSK01-SC(К)220AC/M-KNV2MNK/R-TU 3400-006-72453807-07

Sound signal options as approved by the customer.

WIRING DIAGRAM OF SOUND-AND-LIGHT SIGNALING DEVICE PGSK01

CONNECTION IS PERFORMED THROUGH CABLE GLAND

Recommended cable glands:

KNV2MNK/R - cable gland for non-armored cable, diameter of crimped cable 6 - 18 mm, nickel-plated brass KNVM2M-25NK/R - cable gland for non-armored cable in metal hoses, diameter of crimped cable 6 - 17 mm, inside diameter of the metal hose 25 mm, nickel-plated brass KNVTV2MGNK/R - cable gland for non-armored cable in hoses, pipe conduit, metal hoses; inner thread for external connection pipe cylindrical GOST 6357-81 3/4" G, diameter of crimped cable 6 - 18 mm, nickel-plated brass KNVM2M-20NK/R - cable gland for non-armored cable in metal hoses, diameter of crimped cable 6 - 17 mm, inside diameter of the metal hose 20 mm, nickel-plated brass

Light signaling devices can be divided into three groups as per the degree of signal effect:

Indication: constant glowing. Minimal signal effect. Generally used for indication of any normal operating process.

Warning: twinkling light. Medium signal effect. Twinkling occurs with 1-2 Hz frequency to attract the attention. Used for warning on possible change of operating process.

Hazard communication:  Light impulses. The highest signal effect. Used for signaling any danger, from process malfunctions to emergency situations, such as severe emergencies, fire or natural disasters.

Рекомендации по выбору цвета световых сигналов маяков , согласно стандарту МЭК73:
Red signal (К) - Danger. Respond immediately. Danger for life or movement of the equipment in secure zone without protection.
Amber yellow signal (ZH) - Warning! Act cautiously. Temperature or pressure deviates from the norm.
Green signal (Z) - Precautionary measure. Act. The test is completed, machine is ready for start.
Blue signal (S)– Installed at place. Settings are ready or remote control.
White signal (B) – Has no special meaning. Can be used as a confirmation of an earlier signal.

Recommendations on application of signals of beacon (except for obstruction lights and other air navigation devices:

Light signaling devices, visual alarms (beacons)

Visual signal (beacon, flashing light, status signal or strobe) is a source of light signal. Source of light is located inside enclosure with translucent envelope which can have an additional cover with lens. Beacons have various application. Beacons are aplied as an addition to sound singal in production process in case of danger, alarm or emergency.

Efficiency of the beacon and energy of impulse

Efficiency of the beacon depends directly on brightness of the light source and on the color of visual signal. Dependency of beacon efficiency on the enrgy of impulse of the light source can be shown on the chart. Efficient area of coverage 360 degrees of production area for beacons with xenon lamp is shown on the chart.

Note: the data specified above is given for reference only and does not guarantee coverage and operating characteristics in particular case.

Arrangement of visual alarm

During installation of light signaling device, all-round light distribution and free space around visual alarm shall be provided first of all. The light is being distributed in a straight line andf light signaling device will be much more efficient is it is installed in an area of direct visibility, as opposed to reflected signals. Sound signals are always a primary emergency warning, while visual alarms are secondary emergency signal or a state signal.

According to GOST R IEC 60073-2000, sound signals may be applied in cases when:
– it is required to draw an operator‘s attention;
– coded information will be short, simple and transient;
– the information requires immediate or time-dependent answer;
– application of visual signal is limited;
– the situation is critical and it requires additional or redundant information.

The sound signal may consist of pure or complex tones (not more than 5 signals). The sound signal must be audible and easily recognized by operators and people in the set area of signal reception and at set background noise conditions. Signals must be different from the emergency signal, as per ISO 8201 part 7.

Sound signals of different types must be clearly distinguishable from each other. Limited audibility of signals must be also taken into account in cases, when employees wear protective devices or earphones, as well as people with hearing impairment.

Selection of emergency sound signaling device

General rules of identification of sound signals when coding the information:

1. Continuous, sharply intensifying sound means danger (danger to the safety of people or equipment), critical (process status), malfunction (equipment status).
2. Intermittent sound with constant interval means attention (safety of people or equipment), transient (process status), transient (equipment status).
3. Constant sound with permanent level means safety (safety of people or equipment), normal (process status), normal (equipment status).
4. Interchanging sounds have special meaning, as per technological documentation.
5. Other sounds do not have special meaning and cannot be easily identified by operators, not desirable.

To prevent sound overpressure of operators, it is required to use minimum amount of sounds of different kind in this application.

Intermittent sound signal may be used in some particular cases (for example, in case of change of dangerous or transient state to a safe state).

Sound signals should not be applied in case of safe state (silence).