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Handy Polaris Portable Dissolved Oxygen Monitor


This product is no longer in production – please see Handy Polaris 2 for new requirements

Portable Dissolved Oxygen Monitor

The Handy Polaris is the first Handy with the second generation Handy Probe and microprocessor controlled electronics. The Polaris benefits from advances in sensor performance and improved calibration accuracy whilst maintaining the ease of use of the Handy Beta.

Measuring Dissolved Oxygen in Activated Sludge Plants is a vital part of process control. The Polaris makes this an easy, fast and reliable process, allowing users to check process performance and the accuracy of any online instrumentation. The Polaris is also great for monitoring DO in Reservoirs, Rivers, Aquaculture and water treatment process.


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  • Overview
  • General Specification
  • Measurement Specification
  • Ordering Infomration

The handheld monitor has a large display and an extremely long battery life – many months of normal operation. The system carries out a self-check process every time it is switched on and will carry out calibration of the system at the push of a button. The long standing ability to store the probe dry removes the need for regular probe regeneration and means that the system is ready for use straight from the bag.

The Handy Polaris is supplied with a self polarising, galvanic sensor which is self temperature compensating and can be stored dry. There is no need for any maintenance other than wiping the sensor clean after use. The power consumption is exceptionally low, typically providing 1400 hour use from a single 9V battery.

Dimensions (hxwxd)Monitor: 98mm Diameter x 36 mm
Weight0.5 kg
Protection ClassElectronics: IP65
Sensor: IP68 to 5 metres
Enclosure MaterialPolyoxymethylene (POM)
Cable EntryIntegral Cable Gland
Cable Length3 metres standard, 100 metre maximum
Power SupplyStandard PP9, 9V Battery
Battery LifeApproximately 2 years with 1 hour's use per day, 5 months with 8 hours per day
Environmental Data
Operating/Storage TemperatureMonitor: -20 to 60ºC
Sensor: -5 to 45ºC
LocationPortable Indoor/Outdoor
User Interface
DisplayGraphical providing 3 1/2 digit Display
Setupvia 6 Button Membrane Keypad
Self CheckingPower Up check of Probe Function, Electronic Function, Cable and Battery Condition
Units of Measurementmg/l, ppm, %Sat
Measurement Characteristics
Dissolved Oxygen Range0-60 mg/l (ppm), 0-600 %Sat
Principal of OperationGalvanic Cell, Self-Polarising, Self Temperature Compensating
AccuracyBetter than +/- 1% of measured value
RepeatabilityBetter than +/- 0.5% of measurement
Response Time90% of end value in less than 20 seconds in water
Temperature Range-5 to 45°C
Temperature Accuracy+/- 0.2°C
Salinity Compensation0-59 ppt - manually set
Temperature CompensationAutomatic
Barometric Pressure CompensationAutomatic
Part NumberDescription
220407Oxyguard, Handy Polaris Portable Dissolved Oxygen Meter (Cable Length: 3 metres)
222627Oxyguard, Handy Polaris Portable Dissolved Oxygen Meter (Cable Length: 3 metres)
174940Oxyguard, Accessory Kit Handy DO, H10ACC

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