Measurement Cycle - Thermo Scientific 2210AM Manual

During standby operation, all fluidics devices are shut down
and the analyzer goes into a standby housekeeping mode in
which the pumps are activated on an hourly basis to prevent
tube pinching.
When manual restart mode is selected, the analyzer
automatically goes into standby operation after one hour
(60 minutes) of inactivity. Consult the factory for a different
standby time out or for details refer to Menu Overview section.
Even though the instrument is running
continuously and displays RUN MODE, to
know the actual RESTART mode of the
NOTE: instrument from MAIN MENU follow the
sequence:
➔
MENU
PARAMETERS

Measurement Cycle

The Orion 2210AM Ammonia Analyzer follows a sequence of
steps or events for performing the analysis cycle. They are:
1. Cell pre-wash followed by cell wash
2. Sample Capture
3. Optics Testing
4. Test Reaction Temperature (when enabled)
5. Dilution cycle if enabled per the range selected
6. Adds Reagent1
7. Blank Measurement
8. Adds Reagent2
9. Collect Data and Output Result
10. Post Wash
Cell Wash
In cell wash, the sample is pumped into the reaction cell. The
user is allowed to edit the volume of the sample to be
pumped by the parameter called CELL WASH VOLUME. To
edit the cell wash volume, from the MAIN MENU follow the
sequence:
➔ ➔
MENU SETUP METHOD
In cell wash volume, the positive volume is to pump the
sample into the reaction cell, and the negative volume is to
pull back an amount below the drain after the cell wash is
completed.
Orion 2210AM Ammonia Analyzer
➔
SETUP (+) ANALYSIS
➔
MODE
➔
CELL WASH VOLUME
During the cell wash, the stirrer is on and the info field (if
enabled) shows the sample pumping progress with a
progress bar, along with the volume pumped.
Sample Capture
In the sample capture step, the stirrer is switched off and fluid
is allowed to settle for 5 seconds to drain any excess from the
reaction cell overflow drain.
During the sample capture, the info field (if enabled) shows the
5 seconds countdown.
Optics Testing
In optics testing, the system checks the optical path and
status of the LED source.
During this stage in the cycle, the info field (if enabled) shows
the test optics progress bar which times out at a maximum
period of 90 seconds.
Optics test may flag the following error
messages:
"TESTING OPTICS, PLEASE CHECK
FOR OPTICS FAILURE"
Optics test failed due to the
non-functionality of the LED source or
detector, measurement is aborted, and
the info field will flash the error message.
"TESTING OPTICS PLEASE CHECK FOR
NOTE: STRAY LIGHT"
Stray light reading outside the allowed
limits: will flash with a warning message.
"TESTING OPTICS LOW SIGNAL
LEVEL . . . CELL MAY BE COATED AND
MAY REQUIRE CLEANING"
If the test determines that the light energy
reading is outside the allowed limits, the
measurement is aborted. The cell may
require cleaning, or you many need to
re-calibrate the optics.
Calibration of the Instrument for Measurement Analysis | 23