Mettler Toledo M400 Especificaciones descargar pdf (Pagina 50)

Transmitter M400 50

Printed in Switzerland 52 121 378

Enter the O

value of the sample then press the [ENTER] key to start the calculation of the cali-

bration results.

After the calibration the slope ”S” and the offset value ”Z” are 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).

* only available with ISM sensor. The values will be stored in the sensor.

If ”Adjust” or ”Calibrate” are chosen, the message ”Calibration successful” is displayed. The

M400 returns to the measuring mode.

7.5 Calibration of optical oxygen sensors

Oxygen calibration for optical sensors can be performed as a two-point, process or, depending

on the sensor model connected to the transmitter, also as a one-point calibration.

7.5.1 One-point calibration for optical oxygen sensors

Typically a one point calibration is done in air. Nevertheless other calibration gases and solu-

tions are possible.

The calibration of an optical sensor is always a calibration of the phase of the fluorescence sig-

nal towards the internal reference. During a one point calibration the phase in this point is mea-

sured and extrapolated over the measuring range.

Enter O2 opt calibration mode as described in section 7.1 “Enter Calibration Mode”.

Select 1 point as the calibration type. Press [ENTER].

Place the sensor in the calibration gas (e.g. air) resp. solution.

Depending on the parameterized Drift control (see chapter 8.2.3.5 “Parameters for oxygen mea-

surement based on optical sensors”) one of the two following modes is active.

1 2 ... 45 46 47 48 49 50 51 52 53 54 55 ... 130 131

Sin comentarios

Mettler Toledo M400 Especificaciones Pagina 50