Seismographs for blasting control:
Resistance meters for blasting
The resistance meter OD-3 is a portable instrument designed for the measuring of electrical
resistances of the firing circuit
Technical data:
- Measuring range: 0-2000 Ohm.
- Resolution: 0-1000 Ohm: 0.1 Ohm. >1000 Ohm: 1 Ohm
- Measuring current: 7 mA (Typ.)
- Power supply: 3 x AAA alkaline battery
- Weight: 270 gr.
- Dimensions: 155 x 45 x 75 mm
