Alertech has supplied gas detection systems into a number of industries. Alertech are dedicated to providing safety systems designed to protect the personnel, equipment and processes of our customers. We have products and services design to meet the requirements in the following applications.


Gas Detection System For Commercial Area

gas detector for vehcile, LNG car

Kitchen, Hotel, Hospital, Parks, Warehouse, Shopping mall... There are many places where may use or transport LPG or LNG.

To the Kitchen in hotel, the recommend direction is as same as the household type: Stove--detector+valve+regulator+cylinder, because the solenoid valve has the Max pressure limit, Generally, it's 100Kpa(1Bar) max for home, but to the high presure of the LNG, LPG in some cities, it possibly can not bear the high pressure of the LPG flow from the gas cylinder or pipe.

Actuator and solenoid valve are the good devices to assist you the control the gas leakage accident, they can shut off the gas when detector senses the situation. The actuator/manipulator is good for the ball valves with various dimensions, DN15, DN20, DN20 etc.

Since 2002, Alertech began developing the gas detector for vehicles, specially the LNG driven bus, taxi had been promoted. Alertech tried to develop the detector to keep safe for LNG vehicles. With the following years, the car use gas detector had made 6 breakthrough to conquer the difficulties. Till now Alertech can supply the high quality vehicle use gas detector for you.


Fire Alarm System For Commercial Area

fire alarm system for office, hotel, mall, plazza , store

wiring type,addressable fire alarm, conventional fire alarm, addressable type and conventional type of alertech products

Types of Fire Alarm Systems

All Fire Alarm Systems essentially operate on the same principle. If a detector detects smoke or heat or someone operates a break glass unit (manual break point), then alarm sounders operate to warn others in the building that there may be a fire and to evacuate. It may also incorporate remote signaling equipment which would alert the fire brigade via a central station.

Fire Alarm Systems can be broken down into four categories, Conventional, Addressable, Analogue Addressable and Wireless systems.

Conventional Fire Alarm System

In a Conventional Fire Alarm System, a number of call points and detectors are wired to the Fire Alarm Control Panel in Zones. A Zone is a circuit and typically one would wire a circuit per floor or fire compartment. The Fire Alarm Control Panel has a number of Zone Lamps. The reason for having Zones is to give a rough idea as to where a fire has occurred. This is important for the fire brigade and of course for the building management. The accuracy of knowing where a fire has started is controlled by the number of Zones a Control Panel has and the number of circuits that have been wired within the building. The Control Panel is wired to a minimum of two sounder circuits which could contain bells, electronic sounders or other audible devices. Each circuit has an end of line device which is used for monitoring purposes.

Addressable Systems

The detection principle of an Addressable System is similar to a Conventional System except that the Control Panel can determine exactly which detector or call point has initiated the alarm. The detection circuit is wired as a loop and up to 99 devices may be connected to each loop. The detectors are essentially Conventional Detectors, with an address built in. The address in each detector is set by dil switches and the Control Panel is programmed to display the information required when that particular detector is operated. Additional Field Devices are available which may be wired to the loop for detection only i.e. it is possible to detect a normally open contact closing such as sprinkler flow switch, or a normally closed contact opening. Sounders are wired in a minimum of two sounder circuits exactly as a Conventional System. Loop Isolation Modules are available for fitting on to the detection loop/loops such that the loop is sectioned in order to ensure that a short circuit, or one fault will only cause the loss of a minimal part of the system.

Office, Shopping mall, Hotel, Hospital, Inn, etc, Many rooms should be protected by fire alarm system,the conventional fire alarm could be fine when less than 10 rooms, while you can choose addressable type when more than 10rooms. it's more convenient to install and operate.

Wireless is another connection for system, the principle is same, just the connection method is without wiring. It has problem when there are some obtacles between the panel and alarms, or the distance between the panel and alarms is long, the wireless signal will be weaken.