Ise Setup Menu Features - Thermo Scientific Orion Star Manual Del Usario

Meter Setup Menu Features

ISE Setup Menu Features

Concentration Range
The Orion Star and Star Plus ISE meters can be set for a high or low ISE
concentration range that is used to determine the calibration stability criteria .
If a high ISE concentration range is selected, the meter will perform a normal
calibration with no delay in displaying the calibration standard value . If a low ISE
concentration range is selected, the meter will wait about three to five minutes
before displaying a stable reading for the calibration standard values . The delay
will depend on the species being measured and the concentration of the calibration
standards . The low ISE concentration range is designed to improve the accuracy
of low concentration measurements by allowing the electrode to have a longer
amount of time to stabilize in the calibration standards .
Automatic Blank Correction
The Orion Star and Star Plus ISE meters have an ISE automatic blank correction
feature that uses an algorithm to compensate for the non-linearity of the ion
selective electrode in low-level standards and samples . Since the automatic blank
correction feature requires the use of a set of non-linear equations that can only
be calculated numerically, the user cannot analytically verify the calibration and the
average slope value that is displayed on the meter may be outside of the slope
range that is specified in the electrode user guide . In applications were analytical
verification is required, contact Technical Support . See the Assistance section for
contact details .
EN-72 Thermo Scientific Orion Star and Star Plus Meter User Guide
™