Electric Detonators
DAVEYDET Electric Detonators
Manufactured by Davey-Bickford to the highest quality standards.
Features:
- Accurate delay timing
- High level of protection against accidental initiation
- Excellent water resistance
- Fusehead constructed to aerospace standard
- Colour coded and twinned lead-wires offer good resistance to abrasion and traction
Instantaneous
Medium intensity detonator for initiating charges instantaneously, or a NONEL shock tube round. A solid coloured plastic tag is moulded onto one lead-wire in the shape of ”0” for instantaneous.
Millisecond ( Short Delay ) and Half-Second ( Delay ) Series
The Millisecond Series comprises 21 medium intensity detonators numbered 0 to 20 with a standard time interval of 25 milliseconds between each number. They are mainly used in quarrying for bench blasting.
The Half-Second Series comprises 13 medium intensity detonators numbered 0 to 12 with a standard time interval of 500 milliseconds between each number. They are mainly used in mining for tunnel driving, drifting and shaft sinking.
A solid coloured plastic tag is moulded onto one lead-wire of each detonator in the shape of the delay number.
| Instantaneous | Millisecond | Half-Second | |
| Nominal firing time | 0.7 to 4.5ms* | No.0 to 20 : 0 to 500ms with 25ms intervals | No.0 to 12 0 to 6s with 500 ms intervals |
| Lead-wires colour | Yellow/White | Pink/Green | Yellow/Red |
| Lead-wires length | 3.0m | 3.0m, 7.0m | 5.0m |
| Lead-wires diameter | 0.51mm | 0.51mm, 0.56mm | 0.51mm |
| Total resistance | 0.96 ohm | 0.96 ohm, 1.43 ohm | 1.30 ohm |
Guaranteed no fire current IO | 0.65A | 0.65A | 0.65A |
* Depending on applied current
