YSI ProDSS Meter Calibration and Maintenance
K:\Streamkeepers\Monitoring\Eqpt & supplies\Calibration-Maintenance\SOPs\YSI ProDSS maint-
cal SOP's
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Barometer Calibration
The YSI ProDSS has a built in barometer that has been factory calibrated and rarely needs to be
recalibrated. The accuracy of the barometer is essential for dissolved oxygen calibration. Before
and after each season, check the barometer readings for accuracy by testing against the weather
station located in the Roads Department upstairs. Record on Barometer data sheet the weather
station location, the weather station barometric pressure reading to 0.01 inches Hg, and the
ProDSS barometer reading to 0.01 inches Hg.
If the ProDSS’s barometer does not match the value of the weather station it will need
recalibration before QC-verified data can be collected in the field.
Calibration:
1.
If barometer units are not in inHg, refer to
Check Sensor Readings
on page 4 to change units.
2.
Select the
calibration button
, and select Barometer.
3.
Select Calibration Value then enter the correct “true” barometric pressure.
4.
Select Accept Calibration
Barometric Unit Conversions:
• BP in mmHg=25.4 x BP inHg
• BP in mmHg=0.750062 x BP mb
• BP in mmHg=51.7149 x BP psi
• BP in mmHg=7.50062 x BP kPa
• BP in mmHg=760 x BP atm
Conductivity Calibration
With this conductivity/temp sensor, once specific conductance is calibrated, all other parameters
measured by this sensor will be calibrated.
Equipment Needed:
•
“Conductivity Calibration Protocol & Data Sheets” notebook
•
YSI ProDSS meter
•
Purified water
•
Mild solution of dish soap and tap water
•
Cleaning brush found in maintenance kit
•
Conductivity standard solution
*Check date if opened. The solution expires one month
after opening. If expired, get new solution. NEVER REUSE CALIBRATION
SOLUTION.
