YSI 5500D-1 - Manual (Page 42)

YSI 5X00
83
YSI 5X00
82
Main Menu
Press at the Run Screen to enter the Main Menu.
All system configuration is done through this menu. The four Main Menu submenus
are Calibration, System, Sensor Setup, and Timers.
Calibration Menu
DO sensors(s) must be user calibrated to ensure accurate measurements. Calibrate
DO sensors at the Calibration Menu. Entering the Calibration Menu de-energizes
control and alarm relays for the DO system being calibrated. Energized DO control
relays for systems not being calibrated remain energized including any/all tempera-
ture systems regardless if they are the configured temperature (temp) source for
the DO sensor being calibrated (5400 only). If necessary, disable any temperature
relays for the associated DO sensor in the Sensor Setup menu. There is a 30 second
hold off period for control and alarm relays after pressing
or at
the calibration menu. The hold off period allows sensors time to stabilize before
processing readings for controlling and alarming purposes.
Notes:
- Active Aux and Timer relays do not de-energize at calibration menu.
- A “Check probe” error message during calibration means that the sensor is
Configuring the 5X00
unable to calibrate within the 5X00’s specifications. This may indicate improper
sensor wiring (page 50), 5X00 location (page 27), sensor location or (page
33), the need to service the sensor, or a failed sensor.
- Calibration of temperature sensors is not required and is not available.
- Energized alarm relays for all systems de-energize when a front panel key
is pressed to enter the calibration menu. Alarm systems are not reset until
is pressed to return the instrument to the run screen.
Getting Ready to Calibrate
Calibrate DO sensor(s) by performing a one point calibration. Calibration can be
done to 100% Saturation (Sat) or mg/L. Calibrating to %Sat automatically calibrates
to 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 com-
pensation for the mg/L readings is obtained from the user entered ppt value. This
value can be entered and modified in the DO sensor setup menu.
Figure 4.5 Figure 4.6
Configuring the 5X00