RKI Instruments 65-2649RK-HC-04 User Manual
Page 38
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65-2649RK-HC-04 M2A Transmitter Operator’s Manual
Adjusting the Fresh Air Reading
1.
While in normal operation, press and hold the UP/YES button for 5 seconds to enter
Calibration Mode. Release the button when the following screen appears.
2.
If you want to continue with calibration, press and release the UP/YES button. The
display will indicate the target gas and CAL Mode for a few seconds before showing
FreshAir Adjust?
.
If you want to exit Calibration Mode, press and release the DOWN/NO button. The
M2A will indicate Leaving CAL Mode and the M2A will return to normal operation.
3.
To continue with adjusting the fresh air reading, press and release the UP/YES button.
ENTER
will alternate with FreshAir on the top display line and the current gas
reading will be on the bottom display line.
To skip adjusting the fresh air reading, press and release the DOWN/NO button. The
display will indicate SPAN w/Cal Gas?. Skip to the next section, “Adjusting the Span
Setting”.
4.
Screw the zero air cylinder into the fixed flow regulator.
5.
Use the flexible tubing coming from the calibration adapter/splash guard to connect
the regulator to the calibration adapter.
6.
Turn the regulator knob counterclockwise to open the regulator.
7.
Allow zero air to flow for the length of time determined in “Determining Response
Time” on page 31.
8.
Turn the regulator knob clockwise to close the regulator.
9.
Unscrew the zero air cylinder from the fixed flow regulator. Leave the calibration
adapter/splash guard’s flexible tubing connected to the regulator. The M2A will
continue to display the minimum gas response on the display and retain the response
level in its memory.
10. Press and release the ENTER button. The M2A will perform a fresh air adjustment
and the display will indicate SPAN w/Cal Gas?.
NOTE:
If the fresh air adjustment fails, see “Troubleshooting” on page 29 for
recommended actions.
Adjusting the Span Setting
1.
If you want to continue with adjusting the span setting, press and release the UP/YES
button. APPLY will alternate with SPAN Gas on the top display line and the current
gas reading will be on the bottom display line.
If you want to skip adjusting the span reading, press and release the DOWN/NO
button. The display will indicate Leaving Cal Mode and the M2A will return to
normal operation.
2.
Screw the calibration gas cylinder into the fixed flow regulator.
3.
Turn the regulator knob counterclockwise to open the regulator.
4.
Allow calibration gas to flow for the length of time determined in “Determining
Calib?
YES/NO