Xylem WTW TriOxmatic 690, Руководство по эксплуатации, Страница: 12 / 40

Measuring / Operation TriOxmatic
®
690
12 ba25314e05 09/2020
Required precision 5 %
Measured value in air: 97 % saturation (nominal value: 100%)

No cleaning or recalibration is necessary as the measurement error
lies within the range of precision required by the user.
Measured values
outside the required
precision
If the measured value lies outside the range of precision required by the
user, clean the sensor shaft and membrane (see section 5.2) and
calibrate the sensor (see section 4.2).
In the case of air temperatures under 5 °C do not perform
the function check in air but in air-saturated water that has
a higher temperature. You obtain air-saturated water by
pouring water several times in and out of two vessels so
that it sparkles.
Then submerse the sensor in a vessel with air-saturated
water and perform the function check as described above.