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WTW Dissolved Oxygen Sensor, FDO® 925

The FDO® 925’s small dimensions make it suitable for lab and process. The flow-free, easy-to-clean, beveled membrane allows it to be used in containers with low sample volumes. Low oxygen concentrations under 1 mg/l can also be detected accurately.

The fast and flow-free FDO® 925 is perfectly suited for field measurement. Accessories such as protective armor made of plastic or stainless steel, make this sensor ideal for use in harsh environments. The Kevlar®- strengthened cables of varying lengths allow reliable measurements in deep lakes or raging rivers.

In the sewage plant, FDO® 925 excels at BOD measurement in the Karlsruhe bottle as well as in the monitoring of stationary measurement systems. In connection with the AutoRead function of the MultiLine® devices, its characteristics can be aligned to that of the online sensor FDO® 700 IQ and thus guarantees comparable measured values.

IDS D.O. Sensors (IP 68)FDO® 925FDO® 925-3FDO® 925-6FDO® 925-25
Concentration0.00…20.00 mg/l ± 0.5 % of value
Saturation0.0 … 200.0 %± 0.5 % of value
Partial pressure0.0 ... 200 hPa± 0.5 % of value
Temperature0 … 50.0 °C ± 0.2 °C
Membrane typeBevelled
Shaft materialStainless steel, POM
Shaft dimensionsLength, 140 mm ± 1 mm, ∅ 15.3 mm ± 0.2 mm (5.5" ± .04", ∅ .6" ± .008")
Cable length1.5 m (4.9')3 m (9.8')6 m (19.7')25 m (82')

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Thomas No.Mfr. No.DescriptionList PriceExt. Price
1218A47 201300 Optical IDS D.O. sensor for field and laboratory applications with fast responding bevelled membrane. Electrode with 4.9 ft (1.5 m) fixed cable with waterproof digital connector.
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