Hach-Lange EVITA OXY User Manual - Manual (Page 34)

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If during the 5 minutes calibration period the
transmitter is turned with the OXY 1100 sensor
downwards, calibration stops and measurements
continue with the previous calibration value.
Temperature compensation is made automatically
during calibration via an internal temperature sensor.
In addition, using factory settings, compensation
is also made for air pressure, relative humidity
and salinity. These factory-set values can be
changed via the USC signal converter or via HART
®
communication.
The set values and the signifi cance of deviations
from them are given in appendix I.
A system accuracy of 0.5 % can be achieved by
lifting the transmitter out of the medium and placing
it with the OXY 1100 sensor downwards for 1 hour
to make sure the sensor is completely stabilised.
Calibration can then be initiated. Using the USC 5000/6000/7000
In operator menu use the key to select the
“Calibration” menu and press the key to initiate a
calibration.
Compensations for relative humidity and salinity can
be made by entering these values using the USC
5000/6000/7000, see fi g. 48, p. 37.
Fig. 41
USC 5000/6000/7000
calibration
* See “Advanced settings, fi g. 48, p. 37.