Robo-Tank DIY All-In-One Aquarium Controller User Manual
Robo-Tank DIY All-In-One Aquarium Controller
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User Manual v4.05 – Page 53
Calibrating a Dissolved Oxygen (DO) Probe
Atlas EZO DO circuits can be calibrated 2 ways:
1 Point Calibration
2 Point Calibration
For this calibration, if you’re doing a 2 Point Calibration*, you will require a DO calibration solution, a 0mg/L solution,
(available from Atlas).
*NOTE: This is not required or necessary for aquariums, as long before the Dissolved Oxygen reaches anywhere close to
1.0mg/l, your fish will be at the surface or dying or already dead.
A Dry or 1 Point Calibration is always done first, and is the first calibration, you do on a new probe.
*NOTE: a new probe comes with a “cap” over the end of the probe, PULL it off. Do Not unscrew it!
Selecting Dissolved Oxygen (O
2
), takes you to the
screen at left, CALIBRATE DISOLVED OXYGEN.
The Dissolved Oxygen probe can be calibrated using
a 1 or 2 point calibration process.
A single point calibration doesn’t require any buffer
solution, as it’s a Dry Calibration and only requires
your probe to be dry and exposed to the air.
A 2 Point calibration does the same as a 1 Point, but
with the addition of a Low Oxygen Test Solution, in
this case a 0mg/L solution, for the second
calibration.
Regular maintenance calibrations, i.e. yearly are done just using the 1 Point or Dry Calibration.
Now select the calibration type you want to perform and you’ll be taken to the next step.
After you select the calibration type you want to
perform, in this case a Single Point Calibration,
you’ll see the screen to the left, CALIBRATE
DISSOLVED OXYGEN.
At the top it’ll tell you how many points the
calibration is, in this case a Single Point
Calibration, which is Dry Air, the Target value for
Dry Air is approximately 8.82mg/L.
Below this you’ll see instructions for completing
the calibration, follow these steps and press OK
after waiting 30+ seconds.
There is no limit how long it takes to complete a step, you can leave the probe for 20 minutes and press OK, just be sure to
leave the probe exposed to air for more than 30+ seconds.
If you selected a 1 point calibration the calibration is complete once you press OK and you’ll see a screen verifying this.
Otherwise you will be taken to the next screen.
