78128868
May 15, 2002
A SYSTEM USED WITH PORTABLE GAS MONITORS WHICH CAN DO THE FOLLOWING: RETRIEVE INFORMATION FROM THE MONITOR(S) AND/OR DOWNLOAD DATA TO THE MONITOR(S) AND/OR CALIBRATE THE MONITOR(S) WITH A KNOWN CONCENTRATION OF GAS AND/OR CHARGE THE BATTERIES OF THE MONITOR(S).
Electrical and Scientific Apparatus