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YSI IQ S ENSOR N ET NitraVis 70x IQ TS User Manual

Page 35

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NitraVis 70x IQ TS

Measuring / Operation

4 - 13

ba75950e02

11/2012

If no valid zero adjustment is possible under the current conditions, you

can restore the readiness for measurement by measuring with an older

valid zero adjustment.

To do so, select the

Zero adjustment

setting in the sensor settings

Factory

(factory zero adjustment) or

User

(last valid user zero adjust-

ment).

Then check the measurement results with a

Sensor check (standard)

.

Suitable standards (check equipment) for your sensor are available as

accessories (see chapter 6).

Result

after

Sensor check (standard)

Completing the sensor

check or

Zero adjustment

After a successful sensor check or

Zero adjustment

, return to measure-

ment as follows:

Store the sensor sleeve in a clean environment, e. g. in a plastic bag,

until the next sensor check or

Zero adjustment

.

Result

Meaning

OK

Sensor check (standard)

successful.

Error

Sensor check (standard)

not successful.

Possible cause: wrong or expired standard

17.

Confirm the calibration result with .

18.

Confirm the message,

"After successful cal ..."

with .

The display returns to the measured value display. The mea-

sured value flashes because the sensor is still in the mainte-

nance condition.

19.

Pour away the ultrapure water or standard solution and

remove the sensor sleeve.

20.

Screw in the blind plug or compressed air connector and install

the sensor at the measuring site.

21.

After the

Sensor check (standard)

:

Thoroughly rinse the sensor and sensor sleeve with ultrapure

water.

22.

Switch off the maintenance condition (use <> to select

the UV-VIS sensor, press and make the setting in the

Display/Options

menu).

23.

Switch to the measured value display with . The measured

value stops flashing.