HandiTrap II VOD Recorder

Click here to enlarge image Applications:
1. Records the velocity of detonation (VOD) continuously along the length of a column of explosives loaded into one blasthole and records the delay time between decks of explosives if the blasthole is decked.
Click here to download an example of the HandiTrap II set-up and results in a PowerPoint presentation file.
2. Multiple HandiTrap IIs can be linked together and time synchronized to determine the delay times between blastholes.
3. Records the VOD continuously along the length of a sample of explosives or sample of detonating cord.

Users: Mines, Quarries, Blasting Contractors, Explosives Manufacturers, Universities, Blasting Consultants.


                                                                                                          If you can not see the animated image, click here
Description:
The HandiTrap II VOD Recorder is the world's most affordable explosives continuous VOD recorder for testing explosives loaded into one blasthole and for testing explosives samples.

For explosives samples, the Operator inserts a continuous resistance VOD PROBEROD into the explosives sample and connects the PROBEROD to the HandiTrap II through coaxial cable. When the explosives detonates, the HandiTrap II automatically records distance and time data. After the test the Operator can easily transfer the data from the HandiTrap II to a PC or PDA for graphical display and VOD analysis. The Operator can easily see VOD changes along the length of the explosives sample.

For explosives in blastholes, within minutes the blaster can tape the end of the factory made length of VOD PROBECABLE-HT to the booster and load it into the blasthole, connect the other factory prepared end of the PROBECABLE-HT with electrical tape to the coaxial signal cable on the cable reel and extend the signal cable to the HandiTrap II where it is connected. Before leaving the blast, the Operator turns ON the HandiTrap II and presses the START button and leaves the HandiTrap unattended to record the results automatically when the hole fires. When the explosives detonates, the HandiTrap automatically records distance and time data. After the test the data is transferred from the HandiTrap II to a PC or PDA for graphical display and VOD analysis which shows VOD behavior along the length of the blasthole or explosives sample.
The HandiTrap II is far superior to discrete point VOD recorders (such as those using fibre-optics) because the HandiTrap II collects 131,072 data points at a recording speed of 1 MHz to precisely profile the change in length with time of the VOD PROBEROD (explosives samples) or VOD PROBECABLE-HT (boreholes) as it is consumed in the detonation head.

Accessories: 30 m (100 ft.) spool of VOD PROBECABLE-HT for loading into one blasthole. 0.9 m (3 ft.) long rigid VOD PROBEROD for inserting into an explosives sample. Coaxial signal cable (RG-58/U) for connecting between the VOD PROBECABLE-HT or VOD PROBEROD and the HandiTrap II.

Requirements:A PC running Windows '95 or later, or a PDA running the Palm operating system is required for post-test data transfer, distance versus time graphical display, and comprehensive VOD analyses of the data. All software is provided at no additional cost and may be installed on an unlimited number of PCs and PDAs.