Xylem ORP15A HANDHELD ORP METERS - Manual (Page 2)

B. Soak the Electrode
1. Remove the electrode cap covering the ORP15A meter electrode.
2. Soak electrode in pH 4 buffer for 10 minutes before first use or after storage .
OPERATION
A. Power ON/OFF
Press “HOLD – On/Off” key for 3 seconds. The unit will turn on and enter the “Measure
Mode”. Repeat process to turn off. There is a 10 minute automatic shutoff feature if no keys are
pressed.
B. Set Date and Time
1. Press and hold “CAL” key until it enters “Date/Time Set Mode”.
2. Press “HOLD” key to select date or time parameters.
3. Press “CAL” key to increase or “SCROLL” keys to decrease values.
4. Press “STORE” key for 2 seconds to return to “Measure Mode”.
C. Offset Calibration
1. Press “CAL” key for 3 seconds and release to enter “Calibration” mode.
2. Immerse meter into YSI Zobell solution or other known solution.
3. Press “HOLD” key to select the ability to change the offset values.
4. Press “CAL” key to increase or “SCROLL” keys to decrease values.
5. Press “STORE” key for 2 seconds to return to “Measure Mode” displaying absolute
ORP values.
6. Press “CAL” key to display relative ORP values.
Note: For accuracy, it is recommended the ORP electrode is kept clean. Calibrations may only
be needed occasionally.
D. Measure
Dip the electrode into the test solution while in the “Measure Mode”. “CAL” will enable toggling
between absolute (direct reading) and relative (corrected based on calibration) ORP values.
ABS or REL will appear on the display based on the mode selected.
E. Hold Data
1. When the ORP is stable, press “HOLD” key once to lock the reading on the display.
2. Press “HOLD” key again to unlock reading and the unit will return to “Measure Mode”.
The unit is now ready for another measurement.
Note: The unit cannot be powered off in “Hold Mode”.
F. Save Data
Either in the “Hold Mode” or the “Measure Mode”, press “STORE” key for 2 seconds. “SAVE”
and “M-XX” will appear indicating the reading has been saved and stored in memory location
XX. The unit automatically returns to “Measure Mode”.
Note:
The non-volatile memory stores up to 50 sets of data (ABSolute and RELative mV,
Temperature, Date, Time) even if power is lost. If memory is full, the next set of data will
overwrite the first data set stored, then the second set of data, etc.
G. Recall Data
1. In “Measure Mode”, press “SCROLL” key 3 seconds and release. the most recent set
of saved data will appear.
2. Press the “SCROLL” key to view previous saved data.
3. Press “STORE” key for 2 seconds to return to “Measure Mode”.