4
|
Startup and Operation
Section
Section
Thermo Scientific
Orion 2295 Phosphate Analyzer
|
23
To prime the lines:
MENU
➔
SERVICES
➔
PRIME FLUIDICS
➔
AUTO PRIME ALL
Repeat auto prime as necessary to purge all the air from the lines. When done proceed to
calibrate:
MENU
➔
MEASUREMENT
➔
CALIBRATE
➔
CALIBRATE STANDARD [ENTER]
The result of the calibration will be displayed as follows:
STANDARD : 10 ppm ***depends on the range selected
ABSORBANCE : 0.19
SLOPE : +055.00
INTERCEPT : -0.4
Refer to
Theory of Measurement
section for a detailed explanation about the slope and
intercept. The absorbance value found corresponds to the standard concentration used. If the
calibration absorbance value is within ± 5% of your system QC report, then the system is
operating properly and ready for running sample analysis. If the data is different, repeat the
calibration cycle before proceeding further.
Executing a Manual Calibration
If the result is outside the user specified tolerance (default 5%), the analyzer will warn the user
to avoid storing the wrong calibration data. The user may then ACCEPT or REJECT the
calibration result. Note user accepted manual calibration will become the REFERENCE
calibration data.
The analyzer will use the REFERENCE calibration data when checking for the acceptable
tolerance limits in BOTH manual and auto cal cycles.
In Auto-Calibration Mode
The system will run a second calibration cycle if the first calibration result was outside the user
specified tolerance. If the second calibration result is still outside the specified tolerance limits,
the analyzer will continue to use the previously stored calibration and will flash the “CHK CAL”
message in the Info section of the LCD screen.
NOTE:
It is highly recommended to allow the Orion 2295 Phosphate Analyzer to
complete its measurement cycle rather than using the STOP key. If the STOP
key is pressed before a measurement cycle is complete, it is highly
recommended to perform both the AUTO PRIME ALL and CLEAN
sequences described in
Section 4
.
