MicroRAE User’s Guide309.3.2. Sensor On/OffYou can turn sensors on or off via this set of submenus. The word “ON” or “OFF” below eachsensor’s name tells you its status.1. Press [MODE] to advance through the sensors.2. Press [Y/+] to turn a selected sensor on or off.3. Press [MODE] until “?” is selected.4. Press [Y/+] to save your selection and exit to “Clear Datalog”. Otherwise, to return to thefirst sensor, press [MODE].9.3.3. Clear DatalogThe instrument displays a floppy disk icon to indicate that a datalog is being recorded. Theinstrument stores the measured gas concentration for each sensor, date and time for eachmeasurement, Site ID, User ID, and other parameters. All data are retained (even after the unit isturned off) in non-volatile memory so that they can be downloaded at a later time to a PC.Clearing the datalog erases all data stored in the datalog.IMPORTANT!Once the datalog is cleared, the data cannot be recovered.Note: The datalog is password protected. You must enter the correct password in order to clearthe datalog.1. Enter the password (the default value is 0000).2. Press [Y/+].The message “Log Cleared!” appears briefly on the screen before advancing to “MonitorSetup.”9.3.4. Monitor SetupThe Monitor Setup menu provides access to settings for GPS, Site ID, and User ID.9.3.4.1. GPS On/OffIf your MicroRAE is equipped with GPS, you can turn it on or off:1. Press [Y/+] to enter “GPS On/Off”.2. Press [Y/+] to turn GPS on or off.3. Press [MODE] to save your choice and advance to “Set Site ID”.9.3.4.2. Set User IDIf your MicroRAE is to be used by a specific user, it can have a uniquely named User ID (a nameor numbers or combination) to help identify it in ProRAE Guardian monitoring software. TheUser ID must be eight alphanumeric characters.1. Press [MODE] to advance through the characters from left to right.2. Press [Y/+] to ] to advance through the letters and numbers (1, 2, 3, A, B, C, etc.).3. Press [MODE] to register your choice and advance to the next character.4. When you are satisfied with the Site ID, press [MODE] until “?” is selected.