International Gas Detectors has launched a new 2-wire gas detection system that allows all devices to connect addressably using two-core cable.

The system significantly reduces install costs. A 2-core cable is able to transmit power and communication at the same time to up to 32 detector nodes per cable run. The detectors are termed ‘detector nodes’, as each detection point now has multiple I/O capability. Control panels can have up to 4 cable 'Highways' each. This gives up to 128 detector nodes on a control panel.

Detector nodes not only provide gas detection to a specific area but also have interfaces to connect to other various devices, including: beacon sounders, illuminated signs, slam switches, valves, and many more. This not only reduces the cost of cabling and install costs by up to 75% but also allows the distribution of control where it is needed.

Controllers can also be cascaded to created intelligent networks. For example one controller can act as a ‘Master’ and connect to up to 4 Slave panels. This allows controllers to be local to a ‘process’, whilst monitoring remotely. Three levels of cascades are possible allowing connection of up to 350 detector nodes over a 3km cable run. Many large-scale academic facilities utilise a controller per building floor linked to a central management HMI and BMS interface.

The system has two control panels (the Tocsin 750 with full-colour touchscreen, and the Tocsin 650 with LCD display), as well as a range of accessories, battery backup and relay modules.

The system is easy to configure and manage through its suite of Android apps for Service, Backup, Event Log, and Information download.

Click on ‘Visit website’ opposite to watch Andrew Collier's presentation on the features and benefits of the new IGD 2-wire gas detection system.


International Gas Detectors has launched a new 2-wire gas detection system that allows all devices to connect addressably using two-core cable.

The system significantly reduces install costs. A 2-core cable is able to transmit power and communication at the same time to up to 32 detector nodes per cable run. The detectors are termed ‘detector nodes’, as each detection point now has multiple I/O capability. Control panels can have up to 4 cable 'Highways' each. This gives up to 128 detector nodes on a control panel.

Detector nodes not only provide gas detection to a specific area but also have interfaces to connect to other various devices, including: beacon sounders, illuminated signs, slam switches, valves, and many more. This not only reduces the cost of cabling and install costs by up to 75% but also allows the distribution of control where it is needed.

Controllers can also be cascaded to created intelligent networks. For example one controller can act as a ‘Master’ and connect to up to 4 Slave panels. This allows controllers to be local to a ‘process’, whilst monitoring remotely. Three levels of cascades are possible allowing connection of up to 350 detector nodes over a 3km cable run. Many large-scale academic facilities utilise a controller per building floor linked to a central management HMI and BMS interface.

The system has two control panels (the Tocsin 750 with full-colour touchscreen, and the Tocsin 650 with LCD display), as well as a range of accessories, battery backup and relay modules.

The system is easy to configure and manage through its suite of Android apps for Service, Backup, Event Log, and Information download.

Click on ‘Visit website’ opposite to watch Andrew Collier's presentation on the features and benefits of the new IGD 2-wire gas detection system.


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