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IQ Sensor Net System WTW IQ Sensor Net FDO® Dissolved Oxygen Probe

Overview Specifications Solutions
Overview

Optical Dissolved Oxygen Probe for IQ SensorNet Systems

The WTW IQ Sensor Net FDO® Dissolved Oxygen Probe is 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. 

Product Features
  • Optical, luminescent based DO sensor
  • Intelligent sensor cap stores calibration data
  • Insensitive to air bubbles
  • Equal Path Reference System
  • Green light excitation technology extends the sensor cap lifetime.

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

The sea water model (FDO® 700 IQ SW) is optimized for use in special media: All wetted parts are made of titanium and plastic and are therefore extremely resistant to corrosion.

Available Versions:

  • FDO®700 IQ - optical IQ sensor for O2 (SKU: 201650)
  • FDO®700 IQ SW - like 700 IQ but sea water version (SKU: 201652)
  • FDO®701 IQ SW - like 701 IQ but sea water version (SKU: 201653)
  • FDO®701 IQ - like 700 IQ but with faster response time (SKU: 201660)

 

Specifications

Specifications

Specifications FDO® 700 IQ FDO® 700 IQ SW* FDO® 701 IQ FDO® 701 IQ SW*
Order Number 201650 201652 201660 201653
Measuring method Optical Optical Optical Optical
Measuring range (25 °C) - - - -
O2 concentration 0 ... 20.00 mg/l (0 ... 20.00 ppm) 0 ... 20.00 mg/l (0 ... 20.00 ppm) 0 ... 20.00 mg/l (0 ... 20.00 ppm) 0 ... 20.00 mg/l (0 ... 20.00 ppm)
O2 saturation 0 ... 200.0 % 0 ... 200.0 % 0 ... 200.0 % 0 ... 200.0 %
Resolution - - - -
O2 concentration 0.01 mg/l (0.01 ppm) 0.01 mg/l (0.01 ppm) 0.01 mg/l (0.01 ppm) 0.01 mg/l (0.01 ppm)
O2 saturation 0.1 % 0.1 % 0.1 % 0.1 %
Accuracy < 1 mg/l (ppm): ± 0.05 mg/l (ppm) > 1mg/l (ppm): ± 0.1 mg/l (ppm) < 1 mg/l (ppm): ± 0.05 mg/l (ppm) > 1mg/l (ppm): ± 0.1 mg/l (ppm) < 1 mg/l (ppm): ± 0.05 mg/l (ppm) > 1mg/l (ppm): ± 0.1 mg/l (ppm) < 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: < 150 s t95: < 200 s t90: < 60 s t95: < 80 s t90: < 60 s t95: < 80 s
Minimum flow rate No flow required No flow required No flow required No flow required
SensCheck Monitoring of membrane function Monitoring of membrane function Monitoring of membrane function Monitoring of membrane function
Temp. measurement Integrated NTC, 23 °F ... 140 °F (-5 °C ... +60 °C) ± 0.5 °C Integrated NTC, 23 °F ... 140 °F (-5 °C ... +60 °C) ± 0.5 °C Integrated NTC, 23 °F ... 140 °F (-5 °C ... +60 °C) ± 0.5 °C Integrated NTC, 23 °F ... 140 °F (-5 °C ... +60 °C) ± 0.5 °C
Temp. compensation 23 °F ... 122 °F (-5 °C ... +50 °C) 23 °F ... 122 °F (-5 °C ... +50 °C) 23 °F ... 122 °F (-5 °C ... +50 °C) 23 °F ... 122 °F (-5 °C ... +50 °C)
Pressure Resistance 10 bar (incl. sensor connection cable) 10 bar (incl. sensor connection cable) 10 bar (incl. sensor connection cable) 10 bar (incl. sensor connection cable)
Ambient Conditions 23 °F ... 122 °F (-5 °C ... +50 °C) -13 °F ... 122 °F (-25 °C ... +50 °C) 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) 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 2-wire shield cable with quick fastener to sensor 2-wire shield cable with quick fastener to sensor 2-wire shield cable with quick fastener to sensor
Electromagnetic Compatibility EN 61326, Class B, FCC Class A; Intended for indispensable operation EN 61326, Class B, FCC Class A; Intended for indispensable operation EN 61326, Class B, FCC Class A; Intended for indispensable operation EN 61326, Class B, FCC Class A; Intended for indispensable operation
Certifications CE, cETL, ETL CE, cETL, ETL CE, cETL, ETL CE, cETL, ETL
Mechanical Sensor cap, fixation: POM, PVC, silicone, PMMA sensor body: VA stainless steel 1.4571 protection type IP 68 Sensor cap, fixation: POM, PVC, silicone, PMMA sensor body: VA stainless steel 1.4571 protection type IP 68 Sensor cap, fixation: POM, PVC, silicone, PMMA sensor body: VA stainless steel 1.4571 protection type IP 68 Sensor cap, fixation: POM, PVC, silicone, PMMA sensor body: VA stainless steel 1.4571 protection type IP 68
Weight (without cable) 1.98 lb (900 g) 3.31 lb (1.5 kg) 1.98 lb (900 g) 3.31 lb (1.5 kg)
Warranty 2 years for defects in quality 2 years for defects in quality 2 years for defects in quality 2 years for defects in quality
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