Hand Cranked Blasting Machine with Line Continuity Tester
ERNA-3 is a medium energy hand cranked blasting machine that comes with a built-in line continuity tester. It uses a hand generator and the operator does not need an external power supply or batteries. The blasting machine is portable, compact and lightweight, and can easily be operated by a single person.
The integrated line tester verifies the line’s integrity and uses a two color LED that indicates to the user whether the resistance of the line and detonators is below 450 Ω. For safety reasons, the line tester current is limited to 1 mA.
The device comes in an aluminum enclosure and includes ON or OFF/L-test switch, terminals for connecting the electric detonator line, red/green LED for line testing and removable crank handle for capacitor charging. Both sides of the panel include READY LEDs to indicate the capacitor charge state.
The blasting machine has a durable CORDURA fabric bag.
Features and Benefits
No batteries required
Medium energy blasting machine
Built-in line tester with two color LED
Maximum permitted line resistance, for class 1 detonators
7 - 9 crank turns
Capacitor nominal value
Capacity (2 Ω, 1. class detonators)
Two-color LED, testing point 450 Ω
Maximum line testing current
–25 to + 55, at 100% relative humidity
142 x 125 x 45