VMS2000 Series blast monitoring seismographs from Thomas Instruments Inc. are completely field programmable and have a four line by 20 character LCD. Other features include peak particle velocity, PVS and frequency; a blasting log for event details; programmable start time; RS232 serial port and peak sound level. The seismographs also are available with external strip chart printer, remote phone modems and external strobe light options. The system's SeisWare vibration analysis software is compatible with any PC Windows operating system. Thomas Instruments Inc.
April 1, 2002