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Related Manuals for Xylem FDO 925/STM
Summary of Contents for Xylem FDO 925/STM
- Page 1 2020-03-11 Operating Manual ® 925/STM Optical Dissolved Oxygen Sensor...
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Page 3: Table Of Contents
TABLE OF CONTENTS Overview ................................. 4 Structure and function .......................... 4 Recommended fields of application ..................... 5 Measuring / Operation ............................ 5 General information on the handling of the sensor cap ............... 5 Commissioning ............................. 5 Measuring ............................. 6 Function check and user calibration ..................... 6 Storage .............................. -
Page 4: Overview
Overview Structure and function ® 925/STM Shaft Connecting head with active sensor electronics ® Connection cable (FDO 925/STM) ® converter Schutzkorb Sensor membrane ® Sensor cap SC-FDO 925 with memory chip Gold-plated contacts for the memory chip of the sensor cap Locking device Measurement window O-ring... -
Page 5: Recommended Fields Of Application
Sensor cap with A memory chip is integrated in the sensor cap. The following data are stored memory chip on the memory chip: Type designation of the sensor cap Series number Data of the factory calibration or user calibration For each membrane, the individual calibration values are determined by a Intelligent membrane (IQMC technology) -
Page 6: Measuring
Measuring Minimum depth of Observe the required minimum immersion depth immersion ( chapter „Technical Data“). ® Incident flow The FDO 925 D.O. sensor enables precise measurements without any incident flow. However, an incident flow of the sensor membrane improves the responding behavior of the sensor (... -
Page 7: Storage
Storage ® Always store the sensor in the check and storage vessel (FDO Check) at a temperature in the range 0 … 50 °C (32 … 122 °F). Maintenance, cleaning, replacement General maintenance instructions Handling of the cap Despite its exterior robustness, the sensor is a high precision optical instrument. -
Page 8: Cleaning
Mounting the Check the front surface of the sensor for absolute cleanness and sensor cap clean it if necessary ( chapter 3.3.2). Thoroughly clean the thread of the protective hood. Check the sealing ring for intactness and correct position. The sealing ring has to be replaced if it is damaged. -
Page 9: Checking The Zero Point Of The Sensor
Checking the zero point of the sensor There are two methods to check the zero point of the sensor: Measurement in a nitrogen atmosphere (recommended method). Measurement in a sodium sulfite solution according to DIN EN 25814/ ISO 5814. Test criterion The sensor is OK if the measuring instrument displays <... -
Page 10: Technical Data
Technical data Dimension in mm Sensor Measuring range concentration 0.00…20.00 mg/l ± 0.5 % of measured value Measuring range saturation 0.0…200.0 % ± 0.5 % of measured value Measuring range partial pressure 0.0…400 hPa ± 0.5 % of measured value Temperature 0…50.0 °C ±... -
Page 11: Service And Returns
Our products and services move, treat, analyze, monitor and return water to the environment, in public utility, industrial, residential and commercial building services settings. Xylem also provides a leading portfolio of smart metering, network technologies and advanced analytics solutions for water, electric and gas utilities.
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