RKI Instruments Gas Tracer - Manual (Page 219)

Gas Tracer Operator’s ManualCalibrating and Bump Testing the PPM Combustible Sensor
Calibrating and Bump Testing the
PPM Combustible Sensor
The PPM sensor in the Gas Tracer needs to be calibrated and bump
tested separately. It cannot be calibrated using the AUTO CAL or
ONE CAL
menu items in the main menu or bump tested using the
BUMP menu item in the main menu. The PPM CAL menu item must
be used. In addition, a 6 inch humidifier tube must be used to connect
the zero air cylinder (if used for a WET fresh air adjustment) and the
ppm calibration cylinder to the instrument.
From Measuring Mode, enter Calibration Mode by pressing and
holding the (SHIFT)▼ button, then pressing the DISPLAY(ADJ)
button and releasing both. If the unit prompts you for the password,
enter it by using the AIR▲ and (SHIFT)▼ buttons to select each
password number and then pressing and releasing POWER ENTER to
confirm it and move on to the next number. To go back a number, press
and release the RESET SILENCE button.
The factory set password is the
same as the factory set password for Maintenance Mode: 2102. You
can change the password by entering the PASSWORD menu item in
Maintenance Mode. See “Turning the Password Function On or Off”
on page 172. If you enter an incorrect password, an error screen will
display.
To return to normal operation, press and release the RESET SILENCE
button. You may then try to reenter Calibration Mode.
MAINTENANCE will appear along the top of the screen once you
have entered Calibration Mode. The first item in the calibration menu,
AIR CAL, displays.
Err
PASSWORD