YSI 5200A - Manual (Page 41)

YSI 5200A
80 YSI 5200A
81
Press 11. to save the calibration and return to the Run Screen.
Rinse sensor in tap or purified water and place probe assembly in system 12.
stream or continue calibrating other sensors.
ORP
Menus → Calibration→ ORP
The ORP sensor - figure 4.5, page 74 - is calibrated with a one point calibration.
Directions to Calibrate ORP Sensor
Connect probe assembly - 1. page 60
Read 2. Getting Ready to Calibrate - page 73
Fill calibration cup with 3. 30 ml of known ORP solution. We recommend
using Zobell solution.
Carefully immerse the sensors into the solution. 4.
Gently rotate and/or move the probe module up and down to remove any 5.
bubbles from the pH/ORP sensor.
Screw the calibration/storage cup on the threaded end of the probe 6.
module.
Enter ORP calibration menu: 7.
Menus → Calibration→ ORP
Allow at least one minute for temperature equilibration. 8.
After one minute, verify the ORP and temperature values show no sig- 9.
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. Using the arrow keys to select numbers on the numeric keypad,
enter the value of the solution. Press

to confirm each number selec-
Configuring the 5200A
tion. The ORP solution value varies with temperature. Note the current
temperature reading of the solution and enter the solution value that cor-
responds 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.
Press
11. to confirm the entered value OR press to abort the
calibration and return to calibration menu without saving any changes.
Press
12. to save calibration and return to Run Screen.
Remove the calibration storage cup from probe assembly. 13.
Rinse the sensor in tap or purified water before continuing to calibrate 14.
other sensors or reinstalling the probe guard.
pH
Menus → Calibration→ pH
The pH sensor - figure 4.5, page 74 - 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
Connect probe assembly - 1. page 60.
Read 2. Getting Ready to Calibrate - page 73.
Fill the calibration cup with 3. 30 ml of pH buffer 7 solution.
Carefully immerse the sensor into the solution. 4.
Gently rotate and/or move the probe module up and down to remove any 5.
bubbles from the pH or pH/ORP sensor.
Screw the calibration/storage cup on to the threaded end of the probe 6.
module.
Enter pH calibration menu: 7.
Menus → Calibration→ pH→2 Point Cal (recommended)
OR
Menus → Calibration→ pH→1 Point Cal
Allow at least one minute for temperature equilibration. 8.
Configuring the 5200A