YSI 5200A - Manual (Page 39)

YSI 5200A
76 YSI 5200A
77
When the conductivity and temperature values show no significant change 9.
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. Using the arrow keys to select numbers on the numeric keypad,
enter the value of the calibration solution. Press

to confirm each
number selection.
Note:
The 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. The 5200A is programmed to calibrate to this temperature
compensated conductivity value which is commonly referred to as Specific
Conductance.
The calibration value range is automatically determined when the sensor -
is placed in calibration solution. The 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
Configuring the 5200A
be entered in 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.
Press 11. to confirm the entered value OR press to abort the
calibration and return to calibration menu without saving any changes.
Press
12. to save the calibration and return to the Run Screen.
Remove the calibration/storage cup from probe assembly. 13.
Rinse sensor and calibration/storage cup with clean water before calibrat- 14.
ing the next parameter 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 - figure
4.5, page 74 or YSI probe assembly 5561 - figure 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 137, or from the user entered ppt value in
the DO sensor setup menu.
Directions to Calibrate DO Sensor %Sat Value
Connect Probe Assembly - 1. page 60
Read 2. Getting Ready to Calibrate - page 73
Wait at least 10-15 minutes after the 5200A is powered on, or after the 3.
DO sensor is serviced, before calibrating. (This allows enough time for
the DO sensor to stabilize).
If not using a Conductivity sensor or if the conductivity sensor is disabled, 4.
enter the salinity (ppt) value of the water to be monitored in DO Sensor
Setup menu. This will result in accurate DO mg/L readings.
Menus → Sensor Setup→ DO→ppt
Enter the local elevation in the DO Sensor Setup menu, if not already 5.
configured.
Menus → Sensor Setup→ DO→Elevation
Configuring the 5200A