Calibration Using A Calibration Cell - Mettler Toledo GPro 500 Kurzanleitung Zur Einrichtung

Quick Setup Guide TDL GPro™ 500
12.1
B
%V O
2
25.0
B
°C
B Point1 = 56.90 %sat
u
B O = 57.1 %air
2
12.1
B
%V O
2
25.0
B
°C
O S=– 0.070 nA Z=0.0000 nA
2
u
Save Adjust
Enter the concentration value of the sample then press the [ENTER] key to start
the calculation of the calibration results.
After the calibration the slope "S" is displayed.
In case of a successful calibration, the calibration values are stored in the cal
history and taken over (Adjust), stored in the cal history and not taken over
(Calibrate) or discarded (Abort).
If "Adjust" or "Calibrate" are chosen, the message "Calibration successful" is
displayed. The M400 returns to the measuring mode.

Calibration using a calibration cell

For a more accurate calibration the calibration cell can be used. Doing this the
TDL (the units head) needs to be removed from the probe. Then it has to be
mounted on the calibration cell according to the illustration below. Before cali-
bration is started new values for path length, temperature and pressure have to
be entered on M400. Then the calibration gas is flowed through the calibration
cell and the calibration is done in the calibration menu of M400.
During calibration with the calibration cell the process is still sealed and no
extra precautions need to be taken.
Calibration cell.
150 mm (5.91")
EPL
2 × 100 mm (3.94")
25