INSTRUCTION MANUAL
Handy Polaris
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Handy Polaris – Instruction Manual
Table of Contents
1 General.................................................................................................................................... 4
2 Setup....................................................................................................................................... 5
2.1 Calibrate......................................................................................................................5
2.2 Set Salinity................................................................................................................... 5
2.3 User Interface..............................................................................................................5
2.3.1 Language............................................................................................................... 5
2.3.2 Temperature Units..................................................................................................5
2.3.3 Oxygen Units..........................................................................................................6
2.3.4 Auto shutdown........................................................................................................6
2.3.5 Light intensity (display backlight) ...........................................................................6
2.4 Information.................................................................................................................. 6
2.5 Status list.................................................................................................................... 6
3 Maintenance............................................................................................................................ 7
3.1 Battery exchange......................................................................................................... 7
3.2 Probe Renovation........................................................................................................7
4 Technical Support....................................................................................................................9
4.1 Returning Equipment for Repair..................................................................................9
5 Technical Specification..........................................................................................................10
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Handy Polaris – Instruction Manual
1 General
The OxyGuard Handy Polaris is a hand-held battery powered dissolved oxygen (DO) meter.
It measures mg/l (ppm), % saturation, temperature, has salinity compensation and automatic
compensation for temperature and barometric pressure. The probe is fully field serviceable.
The instrument can withstand wet conditions and being dropped in the water!
The Polaris is very easy to use. The arrow buttons allow you to move round in the actual
display, the "OK" button moves to the next level and the "ESC" button moves back. To turn
the Polaris on or off hold the on/off button depressed for 3 seconds. The instrument will
turn off automatically if no button is pressed for the auto shutdown time.
Use the arrow buttons to select which parameter is shown in large figures. If the Polaris shows
a setup display and you want to measure, press "Esc" one or more times to make it show the
measurement display.
If an error condition occurs then "Error", "Warning" or "Calibrate" will blink in the display. The
Polaris will show more information in the status list window. See Status List.
To measure DO, turn the Polaris on and immerse the probe in the water. If there is no flow
past it move the probe slowly – 5–10 cm/sec is enough. When you are finished using the
Handy rinse the probe in clean water. Wipe the meter dry if it is wet.
To calibrate, or check the calibration, make sure the probe has the same temperature as the
air.
Store the Handy in its pouch at a stable temperature overnight and check the reading in the
morning.
In water the probe adjusts to change in temperature in a minute or two, but in air it can take an
hour.
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Handy Polaris – Instruction Manual
2 Setup
From measurement press "OK" to reach the setup menu (if necessary press "Esc" repeatedly
as needed to reach measurement). The setup menu contains the following:
2.1 Calibrate
To calibrate, or check the calibration, make sure the probe has the same temperature as the
air.
The meter should show between 100 & 101% sat with the probe in air (the temperature must
be steady). Variations from 100.5 can be due to changes in humidity or changes in the actual
oxygen concentration of the air. If calibration seems to be needed wipe the membrane
carefully and check again. To calibrate select Calibrate and press "OK". Progress is shown
on the display, which will also tell you if anything is wrong. When "Calibration done" is shown
press "OK".
If changing temperature or similar prevent correct calibration you can "force" calibration by
holding "OK" depressed when "Calibrate - Please wait" is shown. The result will not
necessarily be precise – "Calibrate" will blink in the display when making measurements. Recalibrate under more stable conditions when possible.
2.2 Set Salinity
Use this function to set the salinity of the water you measure in. Set the tens figure first using
the arrow buttons. Press "OK" to go to units – set this figure and press "OK" again. "New
salinity" and the new setting appears in the display. Press "OK" to confirm and then "Esc" to
measure.
NB to go from units to tens press "Esc".
2.3 User Interface
This permits the following to be set:Language, Temperature units, Oxygen units, Auto
shutdown time, Light intensity (backlight)
NB "> <"indicates the current setting.
2.3.1 Language
Select Language and press "OK" to see which languages are found on your instrument.
Select the desired language and press "OK" to change the language, or press "Esc" to exit.
2.3.2 Temperature Units
You can choose between Celsius – °C – or Fahrenheit – °F. Use the arrow buttons, "OK" and
"Esc" as with the other parameter.
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Handy Polaris – Instruction Manual
2.3.3 Oxygen Units
You can choose between mg/l and PPM
2.3.4 Auto shutdown
The meter shuts down if no buttons are pressed after 2, 5, 10, 15 or 30 minutes as set. The
factory default is 5 minutes. A long setting gives shorter expected battery life. If "Off" is chosen
the Polaris MUST be switched off using the on/off button.
2.3.5 Light intensity (display backlight)
You can choose "Low" (default value), "Medium" or "High". Frequent use of high level
backlight will reduce the battery lifetime significantly.
2.4 Information
This shows the firmware version and the serial numbers for the probe and instrument.
2.5 Status list
This menu only appears if an error condition exists. Selecting this and pressing "OK" will
display a list of error conditions. For more information and help select the desired item and
press "OK". Press "Esc" several times to return to the measurement display.
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Handy Polaris – Instruction Manual
3 Maintenance
A message in the display will inform you when probe renovation is needed, otherwise just
calibrate, and keep the probe clean.
3.1 Battery exchange
Use the tool to unscrew the rear plate. The battery can then easily be exchanged. Take care
not to disturb the ribbon cables. PLACE THE BATTERY IN THE CUT-OUT IN THE PC
BOARD - do NOT put it on top of the print. Make sure you tighten the rear plate properly!
3.2 Probe Renovation
Do NOT do this unless a message in the display tells you so. See the drawings. NB. treat the
electrolyte as concentrated salt water.
Clean the probe. Pull off the membrane protector and unscrew the cap. Rinse the probe.
Clean off any loose white deposits from the anode with the brown plastic scouring pad
provided. Clean the cathode with the pad if needed. The cathode MUST NOT BE POLISHED.
Unscrew the ring from the cap and discard the used membrane and O-ring. Clean the cap and
ring and dry thoroughly. Place a new O-ring in the cap, then a membrane over the O-ring.
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Insert battery
here
The tool is
used to open
the rear plate
Handy Polaris – Instruction Manual
Screw the ring in place. Tighten fairly tightly, but the membrane must not wrinkle. If this
happens try again with a new membrane and O-ring. An O-ring can only be used once.
Fill the cap with type 1 electrolyte and screw it slowly onto the probe. Excess electrolyte will
dribble from the thread. Calibrate the probe. Re-calibrate after a few hours, since the probe
will take a little time to settle down after renovation.
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Handy Polaris – Instruction Manual
4 Technical Support
Technical Support is available by phone, fax, or email, the details of which are shown below.
• Phone: +44 (0) 1726 879800
• Fax: +44 (0) 1726 879801
• Email: techsupport@partech.co.uk
• Website: www.partech.co.uk
To enable us to provide quick and accurate technical support please have the following
information ready when you contact us:
• Serial Number or original purchase details
• Sensor Type, and Serial Number
• Application details
• Description of fault
4.1 Returning Equipment for Repair
If equipment needs to be returned to Partech for repair or service the following address should
be used:
SERVICE DEPARTMENT
PARTECH (ELECTRONICS) LTD
ROCKHILL BUSINESS PARK
HIGHER BUGLE
ST AUSTELL
CORNWALL
PL26 8RA
UNITED KINGDOM
Please include the following information with the returned equipment. Also ensure that
sensors are adequately protected for transportation (Advice on packing can be provided by
our service department).
• Contact name and phone number
• Return address for equipment
• Description of fault or service required
• Any special safety precautions because of nature of application
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Handy Polaris – Instruction Manual
5 Technical Specification
Operating Conditions:.....................Probe: -5ºC to + 45ºC, Meter: -20ºC to +60ºC
Waterproof to max 5m depth short-term
Measuring Range............................0 to 60.0ppm (mg/l) and 0-600%sat
Temperature Range........................-5ºC to + 45ºC
Salinity Compensation....................0-59 ppt salinity (manually set)
Accuracy:........................................Typically better than +/- 1 digit
measured value +/- 1 digit
Repeatability:..................................Typically better than +/- 0.5% of value
Accuracy, Temperature:..................+/-0.2ºC
Self-check of:..................................Probe, meter, cable, battery
Useful battery life:...........................Approx. 2 years with 1 hour use per day
5 months with 8 hours use per day
Battery:............................................9V E-BLOCK, 6LR61, 6F22, MN1604
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Partech Instruments
Rockhill Business Park, Higher Bugle,St Austell, Cornwall, PL26 8RA, UK
Tel: +44(0)1726 879800
Email: info@partech.co.uk Web: www.partech.co.uk
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