YSI NiCaVis 701 IQ NI - Manual (Page 34)

Measuring / Operation
NiCaVis 70x IQ NI
4 - 10 ba76132e01 03/2013
Preparing the sensor
check or
Zero adjustment
Prepare the sensor check or Zero adjustment as follows:
Fig. 4-4 Maintenance condition
By activating the maintenance condition, linked outputs remain in their
present state. The cleaning and the determination of measured values
are switched off. The measured value display shows a flashing, invalid
measured value ("----").
1. Switch to the measured value display with <M>.
2. Use <> to select the UV sensor.
3. Call up calibration with <C>. The Maintenance condition:
Linked outputs are frozen. window appears.
4. Confirm the maintenance condition with <OK>.
5. Take the sensor out of the test sample.
6. Remove the blind plug or unscrew the compressed air connec-
tion from the sensor.
7. Thoroughly clean the sensor enclosure, sensor sleeve and the
compressed air channels (see section 5.1 M AINTENANCE ).
To finish the cleaning procedure, thoroughly rinse the entire
sensor with ultrapure water.
8. Mount the cleaned sensor sleeve:

Loosen both coupling rings on the sensor sleeve.
 Put the sensor sleeve on the sensor and align it:
– The measuring gap is in the center of the sensor sleeve
– The filling opening of the sensor sleeve and the measur-
ing gap opening of the sensor are offset by 90°.
 Tighten both coupling rings on the sensor sleeve by hand.