Electric detonator firing characteristics

C02, etc. Then the vessel was sealed and the gas pumped in to desired pressure, which was as high as 1000 psi. For experiments at 1 atm, the vessel was pressurized to 100 psi, left for 5 mins, exhausted, repressurized and finally depressurized to 1 atm. After each firing (by means of an electric detonator), the steel "witness block placed on top of gap assembly was examined for the characteristic impression formed on it, which... 

Firing characteristics of Brit electrical detonators are given in Ref 51, p 121... 

The firing characteristics of commercial electric detonators are shown in Ref 36, p 64, Fig 11, given here as Fig 13. The curve APB of Fig shows the relation between current t and "minimum lag time" for the most rapid detonator in the series, while the curve CPD shows the corresponding relation between current and "maximum excitation time " for the least sensitive detonator of the series. From the curve it can be seen that with current ij, the most rapid detonator will break the circuit in T4 milliseconds, whereas the least sensitive detonator requires at least T5 millisecs of current flow to enable it to fire. At a higher current 12, however, the excitation time T, is less than time T2 which is allowed by the most rapid detonator, and hence the least... 

S. Odierno, Information Pertaining to Fuzes , Vol 4(1964), Explosive Components has compiled a Table, "Electrical Detonator Data Sheets , showing electrical characteristics firing times for various electrical detonators... 

The transit time is independent of the electrical firing characteristics, strictly a function of initiator design and construction it depends upon the burning or detonation rates of the explosive materials as loaded, and on the distance, or length of the loaded explosive column. 

---