Hach LANGE EVITA OXY Manuel D'utilisation page 107

Figure 27 USC 5000/7000 calibration
Maintenance
The standard operating life of an OXY 1100 sensor is 2–3 years. The
sensor can be replaced in a few minutes.
The maintenance of the EVITA
which should occur every 2–3 months, and the calibration, which should
be performed every 6 months.
Cleaning (OXY transmitter)
If the TILTCAL function is activated, care must be taken during cleaning
that the sensor does not point upward for more than 3 minutes, as
otherwise the calibration procedure is initiated. The TILTCAL
can be deactivated in accordance with the depiction in
page 111.
1. Remove the transmitter from the medium to be measured.
2. Clean the sensor with clear water, in which you can add a little
washing-up liquid/cleaning agent.
OXY sensor is limited to the cleaning,
®
®
Figure 34,
3. Dry the sensor with a soft cloth.
4. Insert the transmitter again into the medium to be measured.
Cleaning (signal converter)
Clean the USC signal converter as required with a soft, damp cloth.
Replacement of the sensor
1. Remove the defective/worn out sensor.
2. Insert a new sensor (refer to
3. Set the operating hours counter (refer to
function
4. Place the transmitter such that the OXY 1100 sensor points
downward. Leave it in this position for at least 1 hour so that the
sensor can stabilize (refer to
5. Perform the calibration
Figure 6, page 90).
Figure 19, page
Figure 16, page 96).
(section Calibration, page 106).
99).
English 107