RKI Instruments Gas Tracer 10,000 ppm - Manual (Page 106)

99 • Calibrating and Bump Testing the PPM Combustible Sensor 10,000 ppm Gas
2. Connect the other end of the tubing to the regulator’s or
dispensing valve’s hose barb fitting.
NOTE: Do not use the 6 inch humidifier tube at this point.
3. Fill the gas collection bag by screwing the fixed flow regulator onto
the calibration cylinder or by screwing the dispensing valve onto
the calibration cylinder and turning the knob counterclockwise.
NOTE: If the regulator has no on/off knob, then gas will begin to
flow at 0.5 LPM as soon as the regulator is connected to the
cylinder.
4. Allow the gas to dispense until the gas collection bag is a little over
half full.
5. If a fixed flow regulator without a knob is used, disconnect it from
the cylinder and immediately clamp down the hose clamp to
prevent the release of gas from the gas collection bag. If a fixed
flow regulator with a knob or a dispensing valve is used, turn the
knob clockwise to stop the gas flow, clamp down the hose clamp
and remove the regulator or dispensing valve from the cylinder.
6. Disconnect the tubing from the regulator or dispensing valve.
7. Install the hose and probe to the Gas Tracer.
Calibrating and Bump Testing the
PPM Combustible Sensor
When calibrating the ppm sensor, a 6 inch humidifier tube must be
used to connect the gas bag filled with zero air (if used for a WET
fresh air adjustment) and the gas bag filled with ppm calibration gas
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”