Calibration configuration
Note: This option can also be invoked by pressing the Modify button in either the Zero calibration or High level
adjustment calibration screens.
1. From the Main menu, select Calibration followed by Gas sensor and then Configuration.
Option Description
Auto-calibration Not available for this sensor.
Manual-calibration When Auto-End is enabled a manual calibration will complete automatically when the
parameters defined in Stop parameters are reached. Press on Configure to set the
manual calibration parameters. If the calibration fails, the previous calibration
parameters remain unchanged and a warning message displayed.
Hold during
calibration or
verification
If checked this keeps the last measured value and stops updating the outputs during
the calibration or verification process. This avoids sending invalid information to any
connected device. At the end of a calibration, this hold remains on for a further
10 minutes to allow the system to stabilize.
Zero calibration
bottle
Make sure this is disabled by unchecking the box as it is not relevant for this sensor.
Stop parameters If this button is pressed you can view or change the existing values or restore the
default values. It is highly recommended to leave these parameters at their default
values. These values apply to manual calibrations with the Auto-End parameter
enabled.
Configure manual calibration
1. Set the parameters for a manual sensor calibration:
Option Description
Calibration mode Select Zero calibration or High level adjustment. If using a high range sensor you also
have the option of 100% humid air calibration.
Note: If zero calibration or 100% humid air calibration is selected, no other parameters
are required. The following are only required for high level adjustment.
Cal. sample Set to In line sample, Gas bottle or Factory parameters. If factory parameters is
selected, the Ksv value is displayed but can be changed.
These additional parameters are required if in line sample or gas bottle has been
selected as the calibration sample:
Medium This is automatically set to Liquid if in line sample has been selected as the calibration
sample, or Gas if gas bottle has been selected.
Gas unit type Either Partial or Dissolved are available for an in line sample. If gas bottle was selected
this is set to Fraction.
Gas unit The list of available units depends on unit type selected above.
Liquid This defaults to Water for the K1200 sensor.
Reference value Enter the reference value for calibration.
Zero calibration
With this method, the sensor should be removed from the sample and exposed to pure N
2
gas. It is
recommended to use the specially designed portable calibration device for this purpose.
Press Start to start the calibration.
A screen is displayed showing the measured values and length of time the sensor has been under
calibration. These values are continually refreshed.
The value % last calibration is an informational message showing the difference between the
current and previous sensor calibrations.
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