YSI 5200A - Manual (Page 37)

YSI 5200A
72 YSI 5200A
73
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
Sensors must be user calibrated to ensure accurate measurements. Calibrate the
sensors in the Calibration Menu. Entering the Calibration Menu de-energizes all
active water sensor control and alarm relays.
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 time for
the sensors to stabilize before processing readings for controlling and alarming
purposes.
Notes:
Energized timed sensor control relays (for example, conductivity, pH, & -
temperature high) begin a new dose cycle after the 30 second hold off
time. For example, say the pH dose up is set to five minutes but the pH
low range relay de-energizes after dosing for only two minutes because
Configuring the 5200A
the calibration menu is entered. If the pH system remains in low range
control after the calibration is saved and the 30 second hold off period
has passed, then the pH low range relay will begin a new five minute
dose cycle. The dose cycle does not dose for the remainder of the timed
dose cycle that was active when the calibration menu was first entered.
Instead, it begins a new dose cycle.
Active Aux and Timer relays do not de-energize at calibration menu. -
The temperature reading is displayed at Conductivity, ORP, and pH -
calibration menus.
A “ - Check probe” error message during a calibration indicates that the
sensor is unable to calibrate within the 5200A’s specifications. This may
indicate that the sensor needs serviced, the sensor is faulty, or improper
probe assembly setup or connection. See Connect Probe Assembly - page
60.
- The temperature sensor does not require calibration nor is it available.
User-configured sensor names appear at the top of the calibration -
menu.
Energized alarm relays for all systems de-energize when the 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
Use the calibration/storage cup, figure 4.5, for all 5562 sensor calibrations. To avoid
cross-contamination of solutions, rinse the calibration/storage cup between calibra-
tions. Additionally, rinse each sensor with a small amount of calibration solution
that can be discarded before placing the sensor in the calibration cup. Sensors
must be immersed in solution when calibrating Conductivity, pH, and ORP. The
recommended amount of calibration solution is provided in the sensor specific
calibration instructions.
Configuring the 5200A