Information Gases Detected Tech. Field tests should be performed frequently between calibrations. If the instrument is subjected to shock, from being dropped, exposed to high concentrations of gas, extended gas exposures, etc it is strongly recommended to perform a field test and recalibrate if necessary. Calibration should be performed in an area free of contaminants.
Instrument calibration is performed by entering the maintenance menu, choosing the calib .
The procedure is repeated for each sensor installed. This is the password screen to enter the maintenance mode. If the correct password is entered, the first screen of the maintenance mode is displayed. It is Auto-SET or program depending on how long the instrument has been on. If the password was not correct, bad code appears on the momentarily on the display, then it reverts back to the main gas display.