RKI Instruments M2 Rig Monitor User Manual
Page 34
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M2 Rig Monitor Operator’s Manual
Preparing for Calibration
NOTE:
The following procedure assumes the use of a calibration kit which includes a
calibration gas cylinder, a zero air cylinder, a fixed flow regulator with an on/
off knob, and a short piece of sample tubing to connect the regulator to the
calibration cup/splash guard.
NOTE:
While in the calibration program, if there is no switch activity for the
calibration time-out period the unit will return to normal operation. See
“Viewing & Changing M2 Rig Monitor Parameters” on page 22 for instructions
to set the calibration time-out.
NOTE:
The following procedure assumes that the target gas is present in a high
enough concentration to affect the fresh air (zero) reading. If a fresh air
environment can be verified, applying zero air to the detector is not necessary
when setting the zero 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
M2 Rig Monitor will indicate Leaving CAL Mode and the M2 Rig Monitor will return
to normal operation.
Adjusting the Fresh Air Reading
1.
The display will indicate FreshAir Adjust? as described above in “Preparing for
Calibration”.
2.
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 Step 9.
3.
Screw the fixed flow regulator into the zero air calibration cylinder.
4.
Use the calibration kit sample tubing to connect the fixed flow regulator to the
calibration cup/splash guard.
5.
Turn the regulator knob counterclockwise to open the regulator.
6.
Allow zero air to flow for two minutes.
7.
Turn the regulator knob clockwise to close the regulator. The Rig Monitor will
continue to display the minimum gas response on the display and retain the response
level in its memory.
Calib?
YES/NO