IQ SensorNet 282/284 Controller


With an easily scalable solution, the 282 and 284 controllers can connect to 1-4 sensors, allowing up to 20 parameters to be measured. Add or change sensors at any time with ease – all IQ SensorNet sensors are compatible with the 282 and 284 controllers. This completely modular plug-and-play system allows you to monitor and control the process in your wastewater facility continuously and accurately.

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The YSI IQ SensorNet 282 and 284 controllers are a modular system for a complete sensor network. This powerful, reliable system continuously measures your water quality parameters anywhere in a facility for process control. Immediate benefits include better network visibility and management, early detection of network failures, improved compliance with regulatory targets and cost savings (energy, pump/blower maintenance, labor).

The IQ SensorNet 282 and 284 controllers have an easy-to-read digital display and a USB interface and data logging capabilities for further analysis and troubleshooting. The 282 and 284 can connect to almost any communication protocol including MODBUS TCP, MODBUS RTU, PROFIBUS and PROFINET.

The 282 or 284 system is capable of measuring:

  • Dissolved oxygen (optical or electrochemical)
  • pH
  • ORP
  • Conductivity
  • Temperature
  • Orthophosphate
  • Turbidity – ultrasonic cleaning
  • TSS (total suspended solids) – ultrasonic cleaning
  • Ammonium
  • Nitrate
  • Nitrite – ultrasonic cleaning
  • NOx – ultrasonic cleaning
  • Potassium
  • Chloride*
  • COD / BOD – ultrasonic cleaning
  • TOC (total organic carbon) – ultrasonic cleaning
  • DOC (dissolved organic carbon share of TOC) – ultrasonic cleaning
  • SAC (spectral absorption coefficient) – ultrasonic cleaning
  • Salinity
  • Sludge Level
  • Specific conductance
  • UVT-254 – ultrasonic cleaning

*Chloride can be seen in the menu on the terminal but only the last value. There is no real-time monitoring and control function when used on the NitraLyt or VARiON sensor as compensation for nitrate.

The entire system accommodates 1 to 4 sensors for the above listed parameters in any combination. Add sensors at any time and at any location or exchange them with ease. Simply change sensors (parameters) and start getting data for the new parameter.

Only YSI can offer you:

  • 3-year warranty
  • Lightning protection
  • Modular expansion
  • One cable for power AND communications
  • Dedicated experts to answer any of your application questions


Cable Feeds 4 screw cable glands M 16 x 105
Cable Options 2-wire with shield for power supply and communications; resistant to polarity reversal; comprehensive EMC shield control; cable topology within network can be in the form of a line, tree, star or multiple star, Total cable length max. = 250 m (820 ft)
Certifications ETL, cETL (conforms with relevant UL and Canadian standards), CE
Connector Screw terminal strips; terminal area for solid connectors 0.2 to 4.0 mm for flexible connectors 0.2 to 2.5 mm; accessible through cover, Used for connecting sensors or as an input/output or for looping through/branching of the IQ SensorNet cable
Display Graphic color display; resolution 320 x 240 pixels; visible area 77 x 64 mm (3.03 x 2.52 in); backlit
Enclosure Material: PC-20% (Polycarbonate with 20% fiberglass)
Rating: IP-66 (not suitable for conduit connection)
Dimensions for 282/284: 144 W x 144 H x 120.2 D mm (5.67 W x 5.67 H x 4.73 D in)
Weight for 282/284: 1.2 kg (2.6 lbs)
Weight for DIQ/S 284-CR6: 1.7 kg (3.7 lbs)
Integrated Lightning Protection According to EN 61326 enhanced over-voltage protection for entire system, implemented in each component
Keypad 5 operation keys: 3 master keys for Measurement (M), Calibration (C), Set/System settings (S), 2 function keys for confirmation/switching menu OK (OK) and Escape (ESC), 4 directional buttons for quick selection of software functions
Memory Data memory up to 520,000 data sets
Module Coupling at Rear Combined mechanical and electrical connection for rapid coupling to modules; no wiring required, Combined mechanical and electrical connection for docking additional modules; a total of 3 modules as a stacked mounted unit
Operating Temperature -4 to 131 °F (-20 to 55 °C)
Power 100 to 240 VAC (50/60 Hz), 24 V AC/DC
Radio Radio transmission Class 1 with a range of 100 m (328 ft); max 300 m (984 ft)
Storage Temperature -13 to 149 °F (-25 to 65 °C)
Warranty 3 years
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