VisiWater Optical DO Sensors
The VisiWater Optical Dissolved Oxygen sensors are intended for the measurement of dissolved oxygen (DO) in environmental applications. It comes standard with a 10 m fixed cable and IP68 rating for submersion beneath the liquid surface. The VisiWater sensor includes integrated opto-electronics, having the full functionality of a measuring device with self-diagnostics. This design requires less maintenance than a classical amperometric oxygen sensor as it does not have a mechanically sensitive membrane or a corrosive electrolyte.
Hardwired Connection
The VisiWater does not have an option for wireless Bluetooth communication so a hardwired digital connection is required. This USB adapter enables configuration and calibration from a PC using ArcAir software.
Powering the VisiWater
The VisiWater requires external power from the control system or from a wall power supply that provides 7 - 30 VDC max. 1 W. Hamilton does not offer an separate power supply.
Resources
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Catalog - Process Analytics
Download the Process Analytics sensor catalog to learn about the complete offering of Hamilton process sensors and accessories. -
Brochure - Arc Intelligent Sensors
Arc Intelligent sensors offer a new way to connect to your process control system. -
Brochure - Optical Dissolved Oxygen
Download the dissolved oxygen brochure to explore the many benefits of making the switch to optical oxygen measurement.
Does salinity impact my DO measurement?
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What is the expected lifetime and when should I replace my ODO cap?
ODO cap health is process specific, with a cap quality indicator in ArcAir representing the general health of the ODO cap. ODO cap quality replacement is advised at 35%, however, some customers may replace ODO caps as part of a preventative maintenance program before reaching 35%. Click to learn more. -
Does temperature impact my oxygen measurement?
Yes, in a closed system, gas phase temperature is directly proportional to pressure and therefore measured oxygen content. In solution, temperature is inversely proportional to dissolved oxygen content. -
When should I calibrate my DO sensor?
The frequency of calibration will depend upon the duration of process runs and the accuracy required for process control. In bioreactor applications calibration can be performed before sterilization; however many customers choose to calibrate after sterilization as well.
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Modbus Communication Basics for Arc Intelligent Sensors
This simple primer article discusses the basic setup of Modbus for Arc intelligent sensors and VisiFerm ECS DO sensors. -
Connecting Arc Products to Programmable Logic Controllers (PLCs)
Wiring schematics and tips for connecting Arc sensors directly to programmable logic controllers. -
Firmware Updates for Arc Products
Hamilton Arc and VisiFerm ECS sensors rely upon internal firmware for their operation. Periodic firmware updates ensure that the sensor has the latest features and fixes any pre-existing bugs that may exist.
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