The seismic timer is used to
simultaneously set-off a single seismic-quality blasting
cap (seismic source of energy) and to trigger the
seismograph to start recording at exactly the same time.
By connecting to both the cap and the seismograph, the
timer acts as the interface between the two. The
seismograph is connected to the timer by the built-in
cable. To connect the cap, one end of the blaster cord
(example segment shown on left above) is inserted into
the locking posts on the timer and the other end is wired
to the cap.
The timer has a potential of 200 V at 100 microfarad
capacitance. It may be used for shot lines up to 300 m
long and the allowable distance from the seismograph is
500 m (actual distances dependent on ambient site
conditions). Requires separately purchased blaster cord
and, if needed, trigger extension cable to increase
distance from seismograph.
Fires a single cap up to 300 meters away; can be up to 500 m from seismograph.
Monitors shot line impedance, triggers seismograph when cap goes off.
Engineered for rugged field use.
Powered by 4 AA batteries. Delivers 200 V at 100 microfarads.