Teledyne GFC-7000E - Trace CO2 Analyzer - Manual (Page 61)

Model GFC7000E Instruction Manual Operating Instructions
04584 Rev A1 50
To view and clear warning messages
SAMPLE HVPS WARNING CO2 = 0.00
TEST CAL MSG CLR SETUP
Make sure warning messages are
not due to real problems.
Press CLR to clear the current
message.
If more than one warning is active, the
next message will take its place
Once the last warning has been
cleared, the analyzer returns to
SAMPLE mode
SAMPLE RANGE=500.000 PPM CO2 = 0.00
< TST TST > CAL
MSG CLR SETUP
SAMPLE HVPS WARNING CO2 = 0.00
TEST CAL
MSG CLR SETUP
TEST deactivates warning
messages
MSG activates warning
messages.
> keys replaced with
TEST key
NOTE:
If the warning message persists
after several attempts to clear it,
the message may indicate a
real problem and not an artifact
of the warm-up period
Figure 6-3 Viewing and Clearing MGFC7000E WARNING Messages
6.3. Calibration Mode
Pressing the CAL key switches the MGFC7000E into multi-point calibration mode. In this mode,
the user can calibrate the instrument or check the instruments calibration with the use of
calibrated zero or span gases.
If the instrument includes either the zero/span valve option or IZS option, the display will also
include CALZ and CALS keys. Pressing either of these keys also puts the instrument into
multipoint calibration mode.
• The CALZ key is used to initiate a calibration of the zero point.
• The CALS key is used to calibrate the span point of the analyzer. It is recommended that
this span calibration is performed at 90% of full scale of the analyzer’s currently selected
reporting range.
Because of their critical importance and complexity, calibration operations are described in detail
in Chapter 7 of this manual. For more information concerning the zero/span, zero/span/shutoff
and IZS valve options, see Section 5.4.
6.3.1. SETUP – PASS: Calibration Password Security
The MGFC7000E calibration functions may be password protected for to prevent inadvertent
adjustments. When the calibration password has been enabled using the PASS menu item found
under the Setup Menu (see below), the system will prompt the user for a password anytime CAL,
CALZ, CALS activated.