Owner's manual

YSI 5200A
79
YSI 5200A
78
9. When the conductivity and temperature values show no signicant change
for approximately 30 seconds, press
to continue calibrating OR
press
to abort the calibration and return to the calibration menu
without saving any changes.
10.
Use the arrow keys to select numbers on the numeric keypad, enter
the value of the calibration solution. Press

to conrm each number
selection.
Note:
- e conductivity value of the calibration solution varies with temperature.
For proper calibration, enter the value of the calibration solution as it is
listed for 25°C. e 5200A is programmed to calibrate to this temperature
compensated conductivity value which is commonly referred to as Specic
Conductance.
- e calibration value range is automatically determined when the sensor
is placed in calibration solution. e four ranges are: 0-200µS, 0-2000 µS,
0-20mS, and 0-200mS.
- Take note of the calibration solution’s unit of measure and compare it to the
unit of measure selected by the 5200A’s auto range function. If the instru-
ment’s selected range is in mS, then the value of the calibration solution must
Conguring the 5200A
be entered as mS, not µS. 1,000 µS = 1 mS. For example, if the solution is
10,000 µS at 25°C and the 5200A has selected 0-20 mS for the calibration
range, enter 10 mS as the calibration solution value.
11. Press
to conrm the entered value OR press to abort the
calibration and return to calibration menu without saving any changes.
12. Press
to save the calibration and return to the Run Screen.
13. Remove the calibration/storage cup from probe assembly.
14. Rinse sensor and calibration/storage cup with clean water before calibrat-
ing the next sensor system and before reinstalling the probe assembly in
the system water.
DO
Menus → Calibration→ DO
To determine which sensor is the DO sensor, See YSI probe assembly 5562 - gure
4.5, page 76 or YSI probe assembly 5561 - gure 3.11, page 35.
Calibrate the DO sensor using a one point calibration. Calibration can be done in
% Saturation (%Sat) or mg/L. Calibrating in %Sat automatically calibrates mg/L
and vice versa so it is only necessary to calibrate one or the other, not both. For
both ease and accuracy, YSI recommends calibrating in %Sat.
Salinity compensation for mg/L readings is obtained from either the conductivity
sensor, if installed and enabled - page 153, or from the user entered ppt value in
the DO sensor setup menu - page 147.
Directions to Calibrate DO Sensor %Sat Value
1. Connect Probe Assembly - page 61.
2. Read Getting Ready to Calibrate - page 75.
3. Wait at least 10-15 minutes aer the 5200A is powered on, or aer the
DO sensor is serviced, before calibrating. (is allows enough time for
the DO sensor to stabilize).
4. If not using a Conductivity sensor or if the conductivity sensor is disabled,
enter the salinity (ppt) value of the water to be monitored in DO Sensor
Setup menu. is will result in accurate DO mg/L readings.
Menus → Sensor Setup→ DO→ppt
5. Enter the local elevation in the DO Sensor Setup menu, if not already
congured.
Menus → Sensor Setup→ DO→Elevation
Conguring the 5200A