Xylem FDO 925/STM, Руководство по эксплуатации, Страница: 5 / 11

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Sensor cap with
memory chip
A memory chip is integrated in the sensor cap. The following data are stored
on the memory chip:

Type designation of the sensor cap

Series number

Data of the factory calibration or user calibration
Intelligent membrane
(IQMC technology)
For each membrane, the individual calibration values are determined by a
factory calibration process and stored to the memory chip of the sensor cap,
ensuring maximum accuracy over the whole lifetime of the sensor.
Automatic sensor
recognition
The data of the sensor and sensor cap is recalled by the meter when the
sensor is connected and is used for measurement and for measured value
documentation. The calibration data are stored in the sensor cap. Thus, the
calibration is automatically retained if the sensor or meter are exchanged.
The digital transmission technique guarantees the failure-free
communication with the meter even with long connection cables.
Recommended fields of application 1.2

On site measurements in rivers, lakes and wastewater

Applications in water laboratories

BOD measurements
2 Measuring / Operation
General information on the handling of the sensor cap 2.1
Despite its exterior robustness, the sensor is a high precision optical instrument. Therefore, you should take the
following precautions when dealing with the FDO
®
925/STM:

Please do not touch the sensor membrane with your fingers

Avoid any great mechanical stress of the sensor membrane (pressure, scratches)
Commissioning 2.2
Scope of delivery

D.O. sensor FDO
®
925/STM with sensor cap

Check and storage vessel FDO
®
Check

Operating manual
Preparing the sensor
for measurement
Connect the sensor to the meter.
The sensor is immediately ready to measure.