Luminescence dissolved oxygen sensor IQ SensorNet FDO®

opticaldigitalfor wastewater

Overview
The IQ SensorNet FDO is a luminescence-based optical dissolved oxygen (DO) probe for continuous process monitoring within IQ SensorNet systems. It provides continuous DO measurement for control of aeration in activated sludge processes to support nitrification and reduce energy consumption. The probe uses replaceable sensor caps (SC-FDO 700 standard and SC-FDO 701 fast-response) to extend service life and simplify maintenance.

Key Features

• No electrodes, electrolyte or routine calibration required
• 45° angle sensor cap reduces DO over‑estimation from bubble burst on the cap
• Variants available for seawater, freshwater and Class 1 Division 2 environments
• Intelligent sensor cap with factory calibration data uploaded automatically
• Long sensor cap service life and user-replaceable caps
• Probe warranty: 2 years; SC-FDO 700 cap: 2 years; SC-FDO 701 cap: 6 months

Available Options / Variants

• IQ SensorNet FDO 701 IQ Fast Response Optical DO Probe
• IQ SensorNet FDO 700 IQ Optical Dissolved Oxygen Probe
• IQ SensorNet FDO 700 IQ SW Optical DO Probe for Seawater
• IQ SensorNet FDO 701 IQ SW Fast Response Optical DO Probe for Seawater

Specifications (table)
Certification: UL 61010-1, CAN/CSA C22.2 # 61010.1
Digital / Digital Sensors: Yes
Equipment used with: 282/284, 2020 3G
Integrated Lightning Protection: Yes
Languages: English, German
Measurement Range: Oxygen Concentration - 0 to 20.00 mg/L; Oxygen Saturation - 0 to 200.0%
Operating Temperature: 23 to 122°F (-5 to 50°C)
Parameters Measured: Dissolved Oxygen, Temperature
Response Time: T90 at 25°C in < 60 seconds
Smart Sensors / Ports: Yes
Storage Temperature: -13 to 122°F (-25 to 50°C)
User Replaceable: Yes
Warranty: 2 years
Waterproof: IP-68

Notes
Replaceable sensor caps extend device life and facilitate field maintenance. Use SC-FDO 700 for typical process applications; use SC-FDO 701 for highly dynamic conditions requiring faster response.

Technical specifications

• Type: Luminescence-based optical DO sensor
• Measurement ranges: 0 to 20.00 mg/L (oxygen concentration); 0 to 200.0% (oxygen saturation)
• Measured parameters: Dissolved Oxygen, Temperature
• Operating temperature: -5 to 50°C (23 to 122°F)
• Storage temperature: -25 to 50°C (-13 to 122°F)
• Response time: T90 < 60 seconds at 25°C
• Ingress protection: IP-68
• User serviceability: Sensor cap user-replaceable
• Warranty: Probe and SC-FDO 700 cap — 2 years; SC-FDO 701 cap — 6 months
• Options: Freshwater, Seawater, Class 1 Division 2 variants