YSI 5200 - Manual (Page 74)

YSI Incorporated 72 5200 Recirculating System Monitor
- 7 0 3 m v T = 7 2 . 5 ° C
U s e r V a l + 3 0 7
8. Enter the correct value of the calibration solution you are using at the current temperature. Refer
to Table 6-2 Zobell Solution Values.
Temperature °C Zobell Solution Value, mV
-5 270.0
0 263.5
5 257.0
10 250.5
15 244.0
20 237.5
25 231.0
30 224.5
35 218.0
40 211.5
45 205.0
50 198.5
Table 6-2 Zobell Solution Values
9. After displaying a brief message, the display will return to the ORP Calibration menu.
NOTE: You may enter one of the other ORP System menus (Set Point, Control or Alarm menu),
but your calibration changes are not saved until you exit the ORP System menu as described
below.
10. Press the [ ESC ] key to exit the ORP Calibration menu. You will be prompted to save your
changes.
C a l i b r a t i o n
S a v e ? Y e s
11. Press the Enter [  ] key to save the new calibration value, or select No, then press the Enter [  ]
key to exit without saving any changes.
12. Rinse the probe module and sensors in tap or purified water and dry.