Overview
Overview
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
Solutions
Documentation & Tools
Documentation & Tools
Brochure
Flyer
Manual
Specification
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