Gas Pup8 Instruction 55-9002Turning ON the Gas PupImportant! To assure that all detectors are properly zeroed, theGas Pup must be turned on in a gas-free environment (nocombustibles), and that no pressure is being applied to theinstrument’s pressure port.It is also recommended that the probe and hose assembly beconnected to the instrument before turning it on.Refer to Figure 5. The Gas Pup is turned ON by momentarily pressing thekey for 1 second. Listen for the pump to start and observe that allsegments of the display are momentarily turned on. After all segmentshave been displayed the word “UEr” (Version) is displayed followed by theinstrument’s software version number. Next, the letter “b” appears in theRANGE window along with the battery voltage momentarily appearing inthe READING window. The instrument will quickly move to display theword “GAS”, indicating that the instrument is operating in its gas mode.After several seconds, the READING window will display a flashing “AS”(Auto Start). This is the Auto Start portion of the instrument’s operation,and is used to stabilize the gas sensor in order to establish ‘zero’ gasreadings. Without additional operator intervention, the auto start portion ofthe start-up routine will finish, leaving the instrument in its PPM gas range.Operation