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Process Instrumentation (Import)

DO(FDO)
DO(FDO)
DO(FDO)
DO(FDO)

DO(FDO)

Optical Sensor FDO 700 IQ

FDO 700 IQ

• No change in flow rate required

• No errors caused by air bubbles

• Excellent cost-performance ratio

Product Information
Key Features
• Precise measurements using an innovative sensor cap
• Low operating costs and minimal maintenance
• Reduced energy consumption

Detailed Product Description

Digitla( Electrochemical / Optical )


• FDO 700 IQ: An optical DO sensor used to control and measure oxygen concentrations in biological wastewater treatment plants, where there is no flow rate, and where H₂S is sensitive. Connected to IQ Sensor Net by digital sensor.

• FDO 701 IQ: Same as FDO 700 and IQ, but fast response time.

• TriOxmatic 700 IQ: A universal O₂ sensor that injects oxygen in the wastewater treatment plant, measures and controls it. Membrane, flow rate, and response time are the same as the existing TriOxmatic series, but the calibration values are stored as digital signals.

• TriOxmatic 701 IQ: O₂ sensor with increased resolution and reduced response time. Specifications are the same as TriOxmatic 701 series, but the calibration values are stored as digital signals.

• TriOxmatic 702 IQ: Specially built model to measure O₂ in low range. O₂ concentration measurement digital sensor of completely pure water. Used for measurement of boiled water etc.



FDO And TriOxmatic in Comparison

Maker
WTW
Model
FDO 700 IQ/701 IQ
TriOxmatic 700 IQ/701 IQ/702 IQ
TriOxmatic 700/701
Measurement Principle
Optics
Electrochemistry
Electrochemistry
Membrane Replacement
Cap replaceable (with cap recognition)

Replaceable (membrane + electrolyte)

Replaceable (membrane + electrolyte)
Calibration
Not required
Required
Required

Drift Behavior

None
Present
Present
Interference (e.g. H₂S, organics)

Not affected

Affected
Affected
Measurement Range
Up to 20 mg/l
Up to 60 mg/l

Up to 60 mg/l

Self-diagnostic system
Not available
Available
Available
Sensor tracking function
Not available
Available
Available
Initial Investment Cost
Higher
Lower
Lower
Factory Calibration Data Storage
Available
Available
Available
Signal Output
Digital

Digital

Digital
Integrated Lightning Protection
Available
Available
Available



Product Specifications Digital D.O. Sensors

Product Type
FDO 701 IQ SW
Measurement method
Optics

Measurement range(25℃)

O₂ concentration

O₂ saturation

0...20.00 mg/l
0.0...20.00 ppm
0-200%

Resolution

O₂ concentration

O₂ saturation

0.010 mg/l
0.1 mg/l 0.1%
Response Time at 25°C
t90: < 150 s
t95: <200 s
Minimum Flow Rate
No flow required
Sensor check funktion
Membrane function, monitoring

Signal Output

Digital
Sensor Memory for Calibration Values

Yes (factory calibrated)

Power Consumption

0.7 Watt
Temp. measurement

Integrated NTC, 23 °F ... 140 °F (-5°C ... +60 °C)

Temp. compensation

23 °F... 122 °F

(-5°C ... +50 °C)

Maximum Pressure

10 bar (including sensor connection cable)

Ambient Conditions
23 °F ... 122 °F (-5°C ... +50 °C)
-13 ℉ ... 122 °F (-25 °C ... +50 °C)
Electrical Connection

2-wire shielded cable with quick-lock connector for sensor

Power Supply

Supplied via IQ Sensor Net

Integrated Lightning Protection
Yes
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