Xylem FDO 925 Bedienungsanleitung

FDO®925ba75898defs01 04/2010Operating manualOptical D.O. sensor

Maintenance, cleaning, replacement FDO®92526ba75898s01 04/20103.2 Exchanging the sensor capNoteBefore removing the sensor cap, observe the general mai

FDO®925 Maintenance, cleaning, replacement27ba75898s01 04/20103.3 Cleaning the sensor3.3.1 Exterior cleaningDirt on the sensor can affect the measurin

Maintenance, cleaning, replacement FDO®92528ba75898s01 04/2010NoteIf the sensor cap is visibly damaged it has to be replaced.3.4 Checking the zero poi

FDO®925 What to do if...29ba75898s01 04/20104 What to do if...Error symptom Cause RemedyNo temperature value or D.O. value – No connection between met

Technical data FDO®92530ba75898s01 04/20105 Technical dataGeneral features Measuring principle Optical measurement based on photolumi-nescence.Tempera

FDO®925 Technical data31ba75898s01 04/2010MeasurementconditionsMeasuring ranges at 20 °C (68 °F)0 ... 20 mg/l D.O.0 ... 200 % D.O. saturation0 ... 400

Wear parts and accessories FDO®92532ba75898s01 04/20106 Wear parts and accessoriesNoteFor further accessories, refer to the WTW catalog or the Interne

FDO®925 18ba75898S01 04/2010NoteThe latest version of the present operating manual can be found on the Internet under www.WTW.com.Copyright © Weilheim

FDO®925 Contents19Contentsba75898S01 04/20101 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 211.1 Structure and

Contents FDO®92520ba75898S01 04/2010

FDO®925 Overview21ba75898s01 04/20101 Overview1.1 Structure and functionStructureSensor cap withmemory chipA memory chip is integrated in the sensor c

Overview FDO®92522ba75898s01 04/2010Automatic sensorrecognitionThe data of the sensor and sensor cap is recalled by the meter when the sensor is conne

FDO®925 Measuring / Operation23ba75898s01 04/20102 Measuring / Operation2.1 General information on the handling of the sensor capDespite its exterior

Measuring / Operation FDO®92524ba75898s01 04/20102.4 Function check and user calibrationFactory calibration The FDO®925 is factory calibrated. In the

FDO®925 Maintenance, cleaning, replacement25ba75898s01 04/20103 Maintenance, cleaning, replacement3.1 General maintenance instructionsHandling of thes