YSI 5200 - Manual (Page 59)

YSI Incorporated 57 5200 Recirculating System Monitor
Display Range
The 5200’s Conductivity system operates in either Auto ranging or 1 of 4 manual ranges. Use a manual
range to enable the 5200’s control and alarm functions. If you select Auto, the control/alarm options
are NOT available.
CAUTION: Changing the display range will cause the Conductivity alarm and control set points to
change. After changing the display range, confirm all set point values.
Temperature Compensation
The conductivity of a sample varies with temperature, therefore, conductivity readings are normally
compensated to 25°C. An adjustment of approximately 1.91% per °C is common for the water
environment. The YSI 5200 has a default value of 1.91% and a range of 0–4%.
An asterisk next to the conductivity value on the 5200 display indicates that the reading is temperature
compensated. If the temperature compensation value is set to 0%, temperature compensation is disabled
and no asterisk is displayed.
5.3.7 Salinity System
The only Salinity Menu option is Enable/Disable.
5.4 Daily Checks
The YSI 5200 is designed to run 24 hours a day, 365 days a year. The only time it is not running is during
maintenance. Under normal operation the system requires virtually no interaction with the user. However,
below are some hints for keeping your YSI 5200 in good operating condition.
Daily Check List
By checking your YSI 5200 daily, you can identify a potential problem early.
1. Check the Status lights. Respond to any alarms. Refer to Section 2 Introduction, Status Lights for
details.
Should an alarm condition occur, pressing Enter key will reset the alarm - terminating further
audible and pager alarms for that event. However, as long as the parameter value stays within the
alarm range, an alarm message will be displayed in the status line. Once the parameter value
returns to acceptable Operating Range, the alarm will be turned off and the status message will be
removed.
2. Check your conductivity, temperature, pH, DO, and ORP values and compare them to the optimal
levels for your environment.
3. Check all of your peripheral devices to ensure proper operation (i.e. heater, chiller, ozonizer, pH
doser).
4. Conduct an alarm test, including paging or email if enabled.
5. Look for signs of stress on all aquatic inhabitants, if any.
Weekly/Monthly Checks
6. Check sensor calibration weekly, recalibrate if necessary.
7. Clean the probe module monthly, or as needed.