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32 of 66 Options Setup - 3654 Portable H2/N2 Analyzer
Operator Manual
ORBISPHERE
3.4.5 Calibration Medium
You can use the Configuration, Calibration medium command to select how the
sensor is to be calibrated.
Note:
You can create a solution having a known H
2
or N
2
concentration by dissolving H
2
or N
2
in water at a measured temperature and pressure. Hach Ultra can provide equipment
for generating such a solution. Alternatively, you can analyze a carbonated beverage
independently by other acceptable means.
3.4.6 Locking Out the Instrument’s CAL Button
3.4.7 Rolling Average
Choose either in pure H
2
or N
2
gas at
atmospheric pressure or in a liquid or
gaseous solution at a known concentration
of gas.
Choose OK when the desired medium is
selected.
You can use the Configuration, Sensor Calibration
Status menu to prevent an accidental sensor re-
calibration from the instrument keyboard.
Choose Disabled to lock out the keyboard CAL button.
To unlock this capability, choose Enabled. Choose OK
when the desired mode is selected.
Choose Rolling Average Status from the Configuration
menu to enable or disable the averaging of gas
concentration measurements.
To enable averaging on three successive gas
measurements, choose Enable. Choose Disable to
disable rolling average.