Xylem Lab 870 - Manual (Page 29)

Lab 870 Operation
29 ba75555e04 11/2009
Displaying the
calibration data
You can display the data of the last calibration (see page 35).
Subsequently, you can transmit the displayed calibration data to the
interface, e. g. to a printer or PC, with the <CAL
_
> key.
Note
The calibration record is automatically transmitted to the interface after
calibrating.
Sample record:
If an ID sensor is used, the calibration record additionally names the
sensor type and sensor series number (see page 11).
Calibration evaluation After calibrating, the meter automatically evaluates the calibration. The
zero point and slope are evaluated separately. The worse evaluation of
both is taken into account. The evaluation appears on the display as
the CalClock and in the calibration record.
16.09.2005 08:53:54
Lab 870 02320025
Calibration pH
Cal time: 16.09.2005 08:22:14
Cal interval: 14 d
AutoCal
Buffer 1 2.000
Buffer 2 4.010
Buffer 3 7.000
Buffer 4 10.011
b1 -177.0 mV 25.0 °C
b2 177.0 mV 25.0 °C
b3 0.0 mV 25.0 °C
Slope : -58.99 mV/pH
Asymmetry : 0.4 mV
Sensor : +++
CalClock Calibra-
tion record Zero point
[mV] Slope
[mV/pH]
+++ -15 ... +15 -60.5 ... -58
++ -20 ... +20 -58 ... -57
+ -25 ... +25 -61 ... -60.5
or
-57 ... -56
- -30 ... +30 -62 ... -61
or
-56 ... -50