Instrument Configuration (cont)
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.
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.
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.
INSTRUMENT CONFIGURATION REVIEW
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
Choose ppm (dissolved) to set the instrument for dissolved measurement in liquids, or % (gaseous) to set the instrument to gas phase measurement.
To review if the instrument is set up as expected, choose the Configuration view command.
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