O
2
sensor calibration
The O
2
sensor needs to be calibrated after each sensor service. Wait at least 30 minutes after
mounting a new membrane before re-calibrating. The sensor is in contact with either:
• Air at atmospheric pressure (In Air)
• O
2
at known concentration (Direct value). The gas can be dissolved or not.
In air calibration
This calibration procedure places the O
2
sensor in water-saturated air, to provide a known oxygen
reference against which to calibrate.
Dry the sensor thoroughly, before placing the sensor storage cap under tap water. Shake off any
excess water, but leave a few drops inside the cap. Verify that the screw-on protection cap is in place
on the sensor head. If you use a Dacron mesh inside the protection cap, make sure it is dry before
attempting to calibrate. Then, loosely place the storage cap back on the sensor, holding it in place
with a few turns of its collar.
Set the calibration parameters accordingly and press calibrate.
Direct calibration
This procedure calibrates the oxygen sensor against a liquid sample containing a known level of
dissolved O
2
flowing through the sample line.
The instrument displays the sensitivity of the sensor as a percentage of the sensitivity determined
when calibration was last performed.
Set the calibration parameters accordingly and press calibrate.
O
3
sensor calibration
The sensor is either in contact with:
• Air at atmospheric pressure (In Air)
• O
3
at known concentration (Direct Value). The gas can be dissolved or not.
The procedure is the same as for the O
2
sensor. In the case of the "In air" calibration, the sensor
measures O
2
during calibration. The O
3
coefficient is deduced taking into account how the sensor
behaves in O
2
. As a different voltage is used at the anode to measure O
2
and O
3
, the O
3
measurement takes a long time to stabilize. To facilitate the follow up after an "O
3
in air" calibration,
negative values can be displayed.
TC sensor calibration
Calibration of the measured gas
1.
Before initiating a calibration process, the calibration parameters must be set by pressing on the
Modify
button. The last calibration parameters are memorized, so this step can be ignored if the
correct parameters are already set. Similarly, if only the calibration value has changed, then this
can be updated directly instead of pressing the
Modify
button.
Option
Description
Gas Phase
Select
liquid
or
gas
(direct calibration only)
Gas unit type
Partial
,
fraction
or
dissolved
(dissolved is for calibration in a liquid only)
Gas unit
The list of available units depends on unit type selected above.
Liquid
Select as appropriate.
Value
Enter the gas concentration according to the value in the calibration media.
English
21
Summary of Contents for ORBISPHERE 410
Page 179: ...ESD 2000 m 6562 ft 2000 m 179...
Page 180: ...GFCI GFI PE 100 240 VAC 5 VDC PE PE 1 U 2 3 2 4 1 U 2 3 4 2 5 180...
Page 181: ...1 3 4 5 6 7 1 2 3 6 4 4 5 4 1 4 6 7 1 1 5 USB A 2 USB B 4 6 2 3 Ethernet 7 1 4 8 181...
Page 182: ...NEMA IP NEMA 4X IP66 1 Ethernet 2 25 mm 8 mm 3 4 1 4 7 2 5 8 3 6 5 6 10 30 VDC 8 BINDER 182...
Page 184: ...1 4 2 3 1 2 3 3 1 2 3 4 1 2 3 4 3 4 5 4 2 6 1 7 ORBISPHERE J8 P8 4 185 J7 J8 6 186 7 186 184...
Page 188: ...32605 ORBISPHERE TC LED 10 1 menu Up Main Close Help Enter 188...
Page 190: ...1 Configure View Conf Channel temperature Grid y z Auto scale Clean 2 190...
Page 191: ...1 Config instrument Measurement Continuous 1 EC EC ppm ppb 5 0 1 2 3 HOT 90 2 TC TC EC TC 191...
Page 196: ...2 OK ideal current 3 O2 O2 30 O2 O2 O2 O3 196...
Page 197: ...O3 O2 O2 O3 O2 O2 O3 O3 O3 TC 1 Modify Modify 2 OK ideal current 3 197...
Page 198: ...ppm Cancel Validation Enable Enable Service done RS485 PROFIBUS DP USB HTTP TCP IP 198...
Page 199: ...Hach 199...
Page 224: ...2000 6562 2000 224...
Page 225: ...GFCI GFI PE 100 240 5 1 U 2 3 4 225...
Page 226: ...1 U 2 3 4 5 1 3 4 5 6 7 1 2 3 6 4 4 5 4 1 4 6 7 226...
Page 227: ...1 1 5 USB A 2 4 USB B 6 2 3 Ethernet 7 1 4 8 NEMA IP NEMA 4X IP66 1 Ethernet 2 25 8 3 4 227...
Page 228: ...1 4 7 2 5 8 3 6 5 6 10 30 8 BINDER 2 BINDER 1 10 30 2 3 4 5 6 10 30 7 10 30 8 3 228...
Page 231: ...Ethernet RJ 45 ethernet ethernet 1 227 P3 4 6 7 J8 6 7 8 J7 9 J8 J7 16 J7 8 231...
Page 233: ...J4 1 J5 2 J6 3 40 ORBISPHERE 29089 ORBISPHERE 32605 ORBISPHERE 233...
Page 234: ...10 Menu Up Main Close Help CAP Enter Security 234...
Page 244: ...last calibration variation 3 ppm Cancel Validation Services Enable Enable Service done 244...
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