Calibration When Connected With Analog Signal; Reset To Factory Calibration - Mettler Toledo InPro 6000 Bedienungsanleitung

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After the sensor signal has stabilized, the sensor can
be calibrated to the 0% value of the desired measur-
able variable, e.g. 0% air, 0.0 % O
25 ˚C / 77 ˚F (see instruction manual for the transmit-
ter).
h
Note: Incorrect zero point calibration is a frequent
source of measurement error. For correct calibra-
tion, we recommend the use of nitrogen gas or other
oxygen-free medium with a level of purity of at least
99.995 %.

5.3.7 Calibration when connected with analog signal

A s soon as a sensor is connected with an analog
communication, only rescaling of the sensor output
is available.
The procedures can be performed the same way as
with amperometric sensors:
1. Slope correction
2. Offset correction
These procedures do not replace a real calibration of
an optical sensor.
Before installing the sensor in a fermenter a one point
air calibration (see chapter 5.3.2) should be perfor-
med using iSense Asset Suite or iSenseLight or a digital
transmitter.
A two point calibration (see 5.3.6) should be perfor-
med after each OptoCap replacement and depending
on the process stress after 5 to 10 batches.

5.3.8 Reset to factory calibration

In case of a wrong calibration of an optical sensor,
e.g. by using wrong calibration values during slope or
process calibration, a new 2-point calibration is ne-
cessary. If it is not possible to perform a good 2-point
calibration a reset of the calibration data is possible
followed by a good 1 point air calibration (see inst-
ruction manual for the transmitter).
InPro 6000 optical O
52 206 256
InPro 6000 Series Optical O
sensors © 01/ 2016 Mettler-Toledo GmbH
2
Sensors 12 mm
2
, or 0 ppm at
2
Printed in Switzerland