Optical IQ sensors for dissolved oxygen - WTW Germany

Calibration-free, reliable, DIN compliant – the optical FDO® oxygen sensors for the IQ SENSOR NET to regulate biological cleaning steps:

• Calibration and flow free
• Insensitive to air bubbles
• Low usage costs

FDO® sensors are the perfect solution for measuring dissolved oxygen. In addition to being free of calibration and flow, with their 45° membrane, they are also insensitive to air bubbles. Therefore, you will not require any additional installation equipment. The robust design of this sensors allows the use with an overpressure of up to 10 bar. The special membrane has a unique stability and thus ensures stable measured values.

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Models:

FDO® 700 IQ optical oxygen sensor for the IQ Sensor Net to regulate biological cleaning steps.
FDO® 701 IQ optical oxygen sensor for the IQ Sensor Net with a faster response time.
FDO® 700 IQ SW and FDO® 701 IQ SW: The sea water models are optimized for use in special media: All wetted parts are made of titanium and plastic and are therefore extremely resistant to corrosion.

Applications:

• Wastewater, e.g. regulation of biological treatment
• Drinking water
• Aquaculture, e.g. monitoring of water quality
• Surface water, e.g. river water monitoring
• Industry

Specification :

FDO®	700 IQ	700 IQ SW*	701 IQ	701 IQ SW*
Order No.	201650	201652	201660	201653
Measuring method	optical
Replacement caps	SC-FDO® 700 working life of 2 years		SC-FDO® 701 working life of 6 months
Measuring range (25 °C):
O2 concentration	0 ... 20,00 mg/l (0 ... 20,00 ppm)
O2 saturation	0 ... 200,0 %
Accuracy	< 1 mg/l (ppm): ± 0,05 mg/l (ppm) > 1mg/l (ppm): ± 0,1 mg/l (ppm)
Response time at 25 °C	t90: < 150 s t95: < 200 s		t90: < 60 s t95: < 80 s
Temp. measurement	Integrated NTC, 23 °F ... 122 °F (-5 °C ... +50 °C) ± 0.5 °C
Ambient Conditions	23 °F ... 122 °F (-5 °C ... +50 °C) -13 °F ... 122 °F (-25 °C ... +50 °C)		23 °F ... 104 °F (-5 °C ... +40 °C) -13 °F ... 104 °F (-25 °C ... +40 °C)
Electrical connections	2-wire shield cable with quick fastener to sensor
Weight (without cable)	Ca. 900 g	Ca. 1.500 g	Ca. 900 g	Ca. 1.500 g

Accesories:

Replacement caps for FDO® sensors - WTW

• Replacement caps for optical oxygen sensors for the IQ SENSOR NET

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Cable

• Sensor and connection cables for the IQ SENSOR NET

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Sensor Mounting

• Extensions and holders to mount 1 to 3 IQ sensors or analog process sensors