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