Dyno Nobel Initiation Systems

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Dyno Nobel offers its HotShot and Digidet initiation systems. According to the company, the HotShot system eliminates the need to program each detonator individually; a digital signal sent to one detonator is recognized and then relayed to the next detonator. Its auto-detection capability automatically locates individual detonators and creates a visual presentation of the entire blast layout, and automatic programming assigns delays prior to blasting by means of a menu-driven interface. The assigned delays are then automatically sent to the detonators by daisy-chaining prior to blasting. The system's software detects and warns of detonator and harness faults, and highlights design and connector errors.

Digidet is an electronic initiation system that employs shock tube initiation. The product involves a length of shock tube crimped inside an electronic detonator; when the shock tube is fired, it sends a signal to the electronic detonator which is then transformed into electrical energy, activating an electronic timer inside the detonator. This gives the system the simplicity of a shock-tube system, according to the company, while offering the accuracy of electronic timing. Digidet detonators are factory-programmed with delay times up to 1,000 ms (the delay times include both the time delay in the shock tube and the delay in the detonator). The user initiates the shock tube near the delay tag to achieve the nominal firing time, an approach that is said to be flexible enough to handle most surface-blasting timing requirements. Dyno Nobel

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