Datasheet

Calibration
?Cal,01
ASCIIDec
0
Null
?Ca l,11
ASCIIDec
0
Null
?Cal,21
ASCIIDec
0
Null
or
or
Wait 300ms
1
Dec
0
Null
Wait 300ms
1
Dec
0
Null
Wait 1300ms
1
Dec
0
Null
Wait 1300ms
Cal,nn.nn
Cal,0 calibrate device to 0 dissolved oxygen
Cal,clear
Cal,?
delete calibration data
device calibrated?
Command syntax
Cal,20.95
Cal,0
Cal,clear
Cal,?
Example Response
1300ms
processing delay
Calibrated to O2
concentration at sea level
Altitude
(feet)
Altitude
(meters)
%
1,000
5,000
10,000
305
1,524
3,048
20.1
17.3
14.3
calibration to O2 levels at your altitude. nn.nn =%o2
After ~1 year the sensor may need re-calibration.
A single point calibration to atmospheric O2 levels
is all thats needed. 0 point calibration can also be
done if accuracy at low O2 levels is needed.