10 | P a g e
OPTICAL FIBER INSTALLATION
Important to know before you start:
oThe quality and accuracy of your results depends in part on how your optical fibers are
prepared and installed on the explosive or propellant.
oEnsure that the length of your optical fibers is more or less equal. Too big a difference
in length (for example: 30 [m]) can contribute to distorting your V.O.D measurement.
oIt is not necessary to respect an order to connect the optical fibers either on the
explosive or the Explomet 2.
oFor Dynamites, Water gels Explosives or Cartridges Explosives, respect a minimum
distance of three times the diameter of the cartridge between the primer and the 1st
optic fiber.
oWe recommend protecting the unused optical receivers of the Explomet 2 with the
supplied grey plastic caps avoid any stray light.
EQUIPMENT FOR THE MEASUREMENT OF DETONATION VELOCITY OF AN EXPLOSIVE WITH
THE EXPLOMET 2 AND ITS OPTICAL FIBERS
Explomet 2
From 2 to 6 Optical Fiber equipped with connectors
Folding Meter
White marker Edding 750
Swiss Knife
Universal Extra Power Tape
Example
V.O.D measurement of an emulsion explosive cartridge (50[mm] diameter, 1000[mm] length) on a test
area.
1. Position your explosive cartridge flat on the ground on the test area.
2. Choose at which end you will insert your primer. For example, on the left.
3. Measure the diameter of the cartridge using your folding meter and multiply by 3. For example,
the diameter of your explosive is 50 [mm], multiplied by 3 that makes 150 [mm].
4. From the left end of your explosive, measure ~150 [mm]. This will mark the point where you
insert your 1st optical fiber.
5. To do this, with your white marker, draw a mark at ~150 [mm] on the explosive.
6. Use the punch of your Swiss Army Knife to drill a small 2[mm] hole at the place of your mark to
insert the optical fiber into your explosive. Insert the fiber about 10 to 20 [mm] perpendicular to
the explosive.
