Calibration Configuration - Hach ORBISPHERE G1100 User Manual

Calibration Menu

7.2 Calibration configuration

This option can be invoked directly from the main calibration menu by selecting the
Configuration option, or by pressing the Modify button in either the zero or high level
calibration screens. The process sets all the parameters used for sensor calibration.
58
Auto-calibration: Off by default. If enabled, press on
•
Configure to set the auto calibration parameters. Refer to
Configure automatic calibration on page
Manual-calibration Auto-End: On by default. When
•
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 (refer to
page 59 for detailed information). If the calibration fails,
the previous calibration parameters remain unchanged
and a warning message displayed.
Hold during calibration or verification: On by default. 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 for a
further 10 minutes to allow the system to stabilize.
Zero calibration bottle: On by default. This tracks the
•
usage of gas from the gas bottle used in the zero
calibration. The remaining volume is displayed as a value
and usage bar. When 10% or less of the total volume
remains, a warning alarm event is triggered and the bottle
should be replaced. When replacing the bottle, use this
option to enter the volume (in liters) of the new bottle and
press Apply to update.
If the Stop parameters button is pressed on the main
configuration screen, 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 and not change them.
These values apply to automatic calibrations and to manual
calibrations with the Auto-End parameter set.
Start period: is the minimum time period that must elapse
•
before measurements are considered valid
Number of points: is the minimum number of
•
measurements that must be taken
Stop criteria: is the maximum allowable signal standard
•
deviation value to ensure an accurate calibration.
Repeat autocal if failure: defines the time period that
•
elapses before a second calibration attempt is made. A
calibration failure event only occurs after the second
failure.
59.
Configure manual calibration on