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CALIBRATION RANGE CHECKING
When calibration is performed for In Air and In a
Span Gas calibration modes, the sensor
measurement current is compared to an ideal
current for the selected membrane to determine
whether or not to complete the calibration. You
can use the Calibration Range Checking menu
to enable or disable sensor calibration range
checking in the instrument.
Choose Disabled to calibrate without checking
the value of the measurement current, within a
range of 0% to 999% of the ideal current. When
set to Enabled, at calibration the measurement
current should be between 25% and 175% of the
ideal current; if the value is outside of these limits,
the calibration fails and Err is displayed on the
instrument LCD.
SPAN GAS
When calibrating the sensor in a span gas, use
the Span Gas menu to enter the span gas
concentration (as a %age) when using a span gas
as a calibration medium.
DUAL USE (MODEL 3650Ex/113 ONLY)
Use the Dual Use menu to change the
measurement phase (either dissolved or
gaseous) for the model 3650Ex/113 dual-use
analyzer.
Choose ppm (dissolved) to set the instrument for
dissolved measurement in liquids, or %
(gaseous) to set the instrument to gas phase
measurement.
Instrument Configuration (cont)
INSTRUMENT CONFIGURATION REVIEW
To review if the instrument is set up as expected, choose the Configuration view command.