OTT Hydrolab DS5, User Manual

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Operation
4.2.7 Pressure Sensor Calibration
Note: The density of water varies with specific conductance. Pressure readings are corrected for
specific conductance.
1.
Remove water from the calibration cup.
2.
Point sensors down.
3.
Enter zero for the standard using Hydras 3 LT or a Surveyor.
4.2.8 pH/ORP Calibration
1.
Pour the pH or ORP standard to within a centimeter of the top of the cup.
2.
Enter the units for pH or ORP using Hydras 3 LT or a Surveyor.
Note: pH is a two-point or three-point calibration. A pH standard between 6.8 and 7.2 is treated as
the “zero” and all other values are treated as the “slope”. First calibrate “zero”, then calibrate “slope”.
After the sensors have been properly maintained, the sensors can be calibrated. Always
allow sufficient time for thermal stabilization of the standards. To reduce the time for
stabilization, try to keep all calibration standards and equipment stored at the same
temperature before parameter calibration. Always use fresh standard and do not tamper
with standards.
4.2.9 Other Sensor Calibrations
Refer to the sensor specific instruction sheet for more information.
4.3 Using the DS5/MS5 for Short Term Deployments
4.3.1 Gathering Data Using the Surveyor
Refer to the Surveyor Manual (Cat. No. 003070).
4.3.2 Gathering Data Using a PC and Hydras 3 LT
For online monitoring and real-time monitoring information, refer to the Hydras 3 LT Quick
Start Guide (Cat. No. 6234289).
4.3.3 Using the DS5/DS5X/MS5 for Unattended Monitoring
4.3.3.1 Creating Log Files
Note: A log file must be created and then enabled before data can be collected.
1.
Connect the Data Cable to a computer and to the Sonde.
2.
Start Hydras 3 LT. The software will automatically scan for Sondes. All detected
Sondes are displayed in the ‘Connected Sondes’ list in the Main window displayed
below. If a Sonde is not found, reattach the data cable and press
RE-SCAN FOR
SONDES
. Retry until the Sonde(s) are found.
3.
Click on the Log Files tab.
4.
Click the
CREATE
button.