Polymetron SODIMAT 9073, Instruction Manual

Page: 62 / 88

SODIMAT - Model 9073
10-1
WARNING !
Mounting this option requires qualified
personal (Aftersales people or
Polymetron agents)
Chapter 10 : Options
10.1 Mixed bed option
3
Utilization :
This option is required when the
background (sodium concentration in the
sample when calibrating) value is too high
for the calibration to be performed.
3
Functioning :
Automatic calibration version
(AUTOCAL) :
When launching the calibration, the
selective valve lets the sample flow through
a ion exchanger resin cartridge (mixed bed)
which absorbes Na+ ions to obtain a
sample with low sodium content.
Considering the time required for the
sample to go through the resin cartridge,
the valve is released 5 minutes before the
sodium addition by the calibration system
(“CAL” is flashing during this time).
After this time, the sodium level contained
in the sample is stabilized and is low : the
calibration starts..
CARCAL cartridge calibration version :
The principle remains the same as the
AUTOCAL version, but before launching the
calibration the operator should activate the
mixed bed by pressing the push button on
the analyser front panel.
3
start up :
In any configuration (AUTOCAL or
CARCAL) , the presence of the mixed bed
should be indicated by entering 1 in
command 950 (“PROGRAMMATION”
mode).
You don’t need to program it if the mixed
bed has been factory-mounted.
Automatic calibration version
(AUTOCAL)
:
The operator has nothing to do.
Calibration with CARCAL cartridge :
The calibration sequences are as follows :
1) Press the push button to activate the
mixed bed. Wait 5 minutes for the sodium
concentration to decrease and stabilize.
Prepare a 200 ppb calibration cartridge.
2) Calibrate as indicated in paragragh 6.2.1.
3) When the calibration is validated, switch
off the calibration cartridge by pressing the
push button.