MREL MicroTrap, Operation Manual, Page: 4 / 56

M i c r o T r a p ™ O p e r a t i o n s M a n u a l - E d i t i o n 4 . 4
IV
Chapter 4: Recording VOD and Hole/Deck Delay Times 21
4.1 Safety Considerations for Selecting an Explosive Testing Site 22
4.2 The Resistance Wire Technique for Measuring VOD 22
4.3 Using ProbeRods for Testing Samples of Explosives 23
4.4 Using ProbeCable for Testing Explosives in Blastholes 25
4.4.1 Preparation of ProbeCable for Single Blasthole Recording 25
4.4.2 Preparation of ProbeCable for Multiple Blasthole Recording 27
4.5 ProbeCable and Coaxial Cable Protection 28
4.6 MicroTrap™ Setup Procedure for VOD Measurements 30
4.7 Probe Resistance Out of Range Lights 32
4.8 Utilizing the External Trigger 33
4.9 Additional Information on Memory and Triggering 33
4.9.1 Memory 33
4.9.2 Triggering 34
Chapter 5: Recording Voltage Signals From Gauges 39
5.1 Introduction to Recording DC Voltage Signals 40
5.2 Connecting Gauges to the MicroTrap™ VOD/Data Recorder 40
5.3 Signal Cable Protection 41
5.3.1 Detonation Cord 41
5.4 MicroTrap™ Setup Procedure for Recording Voltage Signals 42
5.5 Utilizing the External Trigger 44
5.6 Additional Information on Memory 45
Chapter 6: MicroTrap™ VOD/Data Recorder Software 47
6.1 Retrieving Data 48
6.2 Selecting Data Files for Analysis 48
Chapter 7: Contacting MREL for Technical Support 49
7.1 Contacting MREL 50