YSI 5200A - Manual (Page 42)

YSI 5200A
83
YSI 5200A
82
11. Press to save the calibration and return to the Run Screen.
12. Rinse sensor in tap or purified water and place probe assembly in system
stream or continue calibrating other sensors.
ORP
Menus → Calibration→ ORP
The ORP sensor - figure 4.5, page 76 - is calibrated with a one point calibration.
Directions to Calibrate ORP Sensor
1. Connect probe assembly - page 61
2. Read Getting Ready to Calibrate - page 75
3. Fill calibration cup with 30 ml of known ORP solution. We recommend
using Zobell solution.
4. Carefully immerse the sensor into the solution.
5. Gently rotate and/or move the probe module up and down to remove any
bubbles from the pH/ORP sensor.
6. Screw the calibration/storage cup on the threaded end of the probe
module.
7. Enter ORP calibration menu:
Menus → Calibration→ ORP
8. Allow at least one minute for temperature equilibration.
9. After one minute, verify the ORP and temperature values show no sig-
nificant change for approximately 30 seconds. Then, press to
complete calibration OR press to abort the calibration and return
to calibration menu without saving any changes.
10. Use the arrow keys to select numbers on the numeric keypad, enter
the value of the solution. Press

to confirm each number selection. The
Configuring the 5200A
ORP solution value varies with temperature. Note the current temperature
reading of the solution and enter the solution value that corresponds to
that temperature. The calibration solution should include a temperature
chart that contains solution values based on the temperature. Only whole
numbers can be entered.
11. Press to confirm the entered value OR press to abort the
calibration and return to calibration menu without saving any changes.
12. Press to save calibration and return to Run Screen.
13. Remove the calibration storage cup from probe assembly.
14. Rinse the sensor in tap or purified water before continuing to calibrate
other sensors or reinstalling the probe guard.
pH
Menus → Calibration→ pH
The pH sensor - figure 4.5, page 76 - can be calibrated using either a one or
two-point calibration. For the highest accuracy, YSI recommends performing a
two-point calibration. Use two pH buffers that cover the pH range of the system
being monitored. For example, if the pH of the system water varies between 5.5
and 7, perform a 2-point calibration using pH 7 and pH 4.
Directions to Calibrate pH Sensor
1. Connect probe assembly - page 61.
2. Read Getting Ready to Calibrate - page 75.
3. Fill the calibration cup with 30 ml of pH buffer 7 solution.
4. Carefully immerse the sensor into the solution.
5. Gently rotate and/or move the probe module up and down to remove any
bubbles from the pH or pH/ORP sensor.
6. Screw the calibration/storage cup on to the threaded end of the probe
module.
7. Enter pH calibration menu:
Menus → Calibration→ pH→2 Point Cal (recommended)
OR
Menus → Calibration→ pH→1 Point Cal
8. Allow at least one minute for temperature equilibration.
Configuring the 5200A