YSI 5200 - Manual (Page 50)

YSI Incorporated 48 5200 Recirculating System Monitor
seconds of the powered cycle. The entire cycle is then repeated. Interval mode extends the time between
probe servicing and calibration, but disables DO control and alarm functions.
Display Range
The 5200’s DO system operates in either an Auto or Manual Range. Use Manual 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 DO alarm and control set points to change. After
changing the display range, confirm all set point values.
Display Format
The Display Format refers to the option between displaying your DO values in % saturation or mg/L.
Membrane Type
The 5200’s DO system can use either polyethylene or Teflon membrane caps. Teflon membranes offer
traditional, reliable performance for most applications; while polyethylene provide a significantly faster
response time and less flow dependence.
NOTE: After changing the membrane type, the DO probe must be calibrated. See 6.2.2 Dissolved
Oxygen Calibration.