BC-110 acousto-optic start emergency annunciator

Product description

Audible and visual start emergency annunciator (also called sound light alarm signal) is a kind of starting emergency signal signal device used in dangerous places to send warning signals to people through sound and various lights. Explosion proof acousto-optic starting emergency annunciator is suitable for installation in explosive gas environment with IIC T6 temperature group, and can also be used in Zone 1 and Zone 2 explosion-proof places with explosion-proof requirements in petroleum, chemical and other industries, as well as outdoor and outdoor use. The non coding type can be used together with the fire start emergency signal controller of any manufacturer at home and abroad. In case of emergency such as accident or fire at the production site, the control signal sent by the fire start emergency signal controller starts the acousto-optic start emergency signal circuit, sends out the acousto-optic start emergency signal signal, and completes the purpose of starting the emergency signal. It can also be used together with the manual start emergency signal button to achieve the purpose of simple sound and light start emergency signal. The explosion-proof products shall meet the requirements of GB3836 series standards, and have been identified by the national testing agency of * * * and obtained the explosion-proof certificate. The shell of the starting emergency annunciator is made of stainless steel, lamp The shell has strong impact resistance, 180 clear and visible very bright LED Phototube It is equipped with an ultra strong buzzer, featuring stable operation, long service life, low power consumption, and immunity from pollutants and water.

Set installation requirements

1. The fire audible and visual alarm shall be set at the emergency exit of each fire compartment, which should be located near the walkway of each floor stairs export office.

2. For the protection object with multiple start emergency signal areas, it is better to select the fire sound alarm with voice prompt, and the voice should be synchronized.

3. When multiple fire audible alarms are set in the same building, all fire audible alarms can be started and stopped at the same time.

technical parameter

Working voltage: AC220/380V/DC18V-26V Static current: ≤ 500 μ A

Start emergency signal current: ≤ 60mA

Sound level:>106dB

Wire system: two bus 24V (red), GND (black)

Installation method: exposed wall hanging

Operating temperature: - 10 ℃~55 ℃

Relative humidity: ≤ 95%

Overall dimension: 122 × 73 × 44mm (height × width × thickness)

Weight: about 150g

Color: red, green and yellow

Technical parameter 2

Working voltage: DC24V; AC220V

Start emergency signal current: DC24V ≤ 100mA Strobe frequency: 60 times/min

Sound intensity: 90-100dB

Sound form: fire fighting sound (alarm siren and ambulance sound can be designed according to user requirements) Protection grade: IP65

Operating environment: temperature: - 20 ℃ - 50 ℃

Relative humidity: ≤ 95%, no condensation

Atmospheric pressure: 80KPa-110KPa

Inlet diameter: M22 × 1.5 (the number and size of inlet diameter can be designed and produced according to user requirements)

Weight: 1.2Kg

Installation method

The audible and visual emergency annunciator is activated by detector It is composed of emergency signal control host, widely used in petroleum, gas, chemical, oil depot and other petrochemical industries with toxic gas. It is used to detect leakage in indoor and outdoor dangerous places, and is an important instrument to ensure production and personal safety. When there is toxic gas in the measured place, the detector will convert the gas signal into voltage signal or current signal and send it to the startup emergency signal instrument, and the instrument will display the percentage concentration value of the lower limit of toxic gas explosion. When the concentration of toxic gas exceeds the set value of startup emergency signal, the audible and visual startup emergency signal will prompt, and the personnel on duty will take safety measures in time to avoid combustion and explosion accidents.

1. Precautions during application

Once the fixed installation of the acousto-optic start emergency annunciator is in place, its position is not easy to change. The following points should be considered in specific applications.

(1) Find out the possible leakage points of the devices to be monitored, analyze their leakage pressure, direction and other factors, and draw the probe location distribution diagram, which can be divided into three grades according to the severity of leakage: I, II and III.

(2) Determine the leakage direction of toxic gas when a large amount of leakage occurs according to the specific factors such as air flow direction and wind direction of the location.

(3) According to the density of leakage gas (greater than or less than air), combined with the air flow trend, the three-dimensional flow trend chart of leakage is synthesized, and the initial point setting scheme is made at the downstream of the flow.

(4) Study whether the leakage state of the leakage point is micro leakage or spray. If it is a micro leak, the location of the set point should be closer to the leak point. In case of jet leakage, keep it slightly away from the leakage point. Based on these conditions, a plan for the final design point is drawn up. In this way, the quantity and variety to be purchased can be estimated.

(5) For places with large toxic gas leakage, a detection point shall be set every 10-20m apart according to relevant regulations. For unattended small and discontinuous operation pump Attention should be paid to the possibility of toxic gas leakage. Generally, a detector should be installed at the lower air outlet.

(6) For places with hydrogen leakage, the detector shall be installed on the plane above the leakage point.

(7) For medium with gas density greater than air, the detector should be installed on the lower plane below the leakage point, and pay attention to the characteristics of the surrounding environment. Special attention shall be paid to the setting of safety monitoring points in places where toxic gas is easy to accumulate.

(8) For the open toxic gas diffusion and escape environment, if there is no good ventilation conditions, it is also easy to make the content of toxic gas in the air of a certain part close to or reach the lower limit of explosion concentration. These are safety monitoring points that cannot be ignored. According to the analysis results of on-site accidents, more than half of them are caused by incorrect installation and calibration. Therefore, it is necessary to introduce correct installation and calibration precautions to reduce failures.

2. Precautions for installation of acousto-optic start emergency annunciator

(1) The probe of the start emergency annunciator is mainly a detection element that contacts the combustion gas sensor. It consists of a spherical platinum wire coil wrapped with aluminum oxide and adhesive, and its outer surface is covered with platinum, palladium and other rare metals. Therefore, be careful during installation to avoid damaging the probe. Sound and light start emergency signal at least sound generating equipment, no probe

(2) The installation height of the starting emergency annunciator should generally be more than 180cm, so that the maintenance personnel can carry out daily maintenance.

(3) The startup emergency annunciator is a safety instrument with sound and light display functions. It should be installed at a place where the staff can easily see and hear, so as to eliminate hidden dangers in time.

(4) There shall be no strong electromagnetic field (such as high-power motor and transformer) around the start emergency annunciator that may affect the operation of the instrument.

(5) The installation position of indoor probe shall be different according to the density of measured gas. When the measured gas density is less than the air density, the probe shall be installed 30cm away from the roof in a downward direction; On the contrary, the probe shall be installed 30cm above the ground in an upward direction.

Construction wiring diagram of acousto-optic start emergency annunciator

The controller is connected to the detector with three core shielded wire (note: the diameter of single core wire is not less than 0.75mm national standard wire, depending on the actual distance), and the shielding layer is connected to the controller housing and reliably grounded. When RVV cable is used, it shall pass through the metal pipe and reliably ground the metal pipe.

Refer to the wiring diagram of the controller and detector, and connect the controller of the acousto-optic emergency annunciator with the corresponding terminal of the detector.

Wiring mode:

1. Connect input controller terminal and detector terminal correspondingly;

2. Connection between output terminal and linkage equipment;

3. When inductive equipment such as exhaust fan meets the condition of no more than high/220VAV, it can be directly connected to the output terminal, but try to avoid the load equipment being directly connected to the output terminal. When the load equipment is greater than high/220VAV, it must be externally connected to the transfer equipment;

5. The controller and detector shall be reliably grounded;

6. When carrying out various installation operations, power off first, or the host may be burned.