Xylem SI Analytics Lab 745 Manual De Instrucciones página 59

8.6.2.2 Temperature offset
Under menu item "Temp.Offs." you can enter an offset for the temperature value.
> Select "Temp.Offs.".
An input dialog allows you to set up the offset. This value can be positive or negative.
Via (CONF +1) or (LOG -1) you selected the desired setting.
(ON/OFF) confirms and saves your setting.
(MEAS) terminates the entry dialog without transferring the value.
8.6.2.3 One point calibration
The measuring signal will be calibrated at this one point by means of a defined oxygen concentration
(reference measurement) or a known nominal value, e.g. via an independent procedure or a lab/field
device.
> You will be invited to immerse the sensor into the calibration medium (ambient air).
Confirm this dialog with (ON/OFF). The currently measured values will be displayed.
If the measured values (O
(ON/OFF).
> You will be prompted to immerse a nominal value.
Via (CONF +1) or (LOG -1) you selected the desired setting.
(ON/OFF) confirms and saves your setting.
(MEAS) terminates the entry dialog without transferring the value.
This completes the calibration process. The new calibration value will be saved in the device.
8.6.2.4 Automatic calibration
The automatic calibration of the oxygen sensor is a one point calibration to 102 % and takes place in
water vapor saturated ambient air at a temperature of ≥ 5°C.
In order to avoid calibration errors caused by vaporization coldness (automatic temperature
compensation!), the sensor must be dry during this process.
> You will be prompted to immerse the sensor into the calibration medium (ambient air).
Confirm this dialog with (ON/OFF). The currently measured values will be displayed.
If the measured values (O
(ON/OFF).
Via (CONF +1) or (LOG -1) you selected the desired setting.
(ON/OFF) confirms and saves your setting.
(MEAS) terminates the entry dialog without transferring the value.
This completes the calibration process. The new calibration value will be saved in the device.
If the calibration is faulty, an error message will be displayed (see  8.6.2.5).
8.6.2.5 Calibration error
The limits for all calibration values are saved in the meter. If the entered values are outside these
limits, one of the following error messages will be displayed:
"!Incorrect entry!" or "!Calibration error!".
You may have to repeat the calibration, service the sensor (see  chapter 12 "Maintenance set
Z 615") or replace it (wear part!).
+ Temperature) are in a stable condition, reconfirm by pressing
2
+ Temperature) are in a stable condition, reconfirm by pressing
2
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