YSI ORP15 Operating Manual

EcoSense® ORP15 ORP/Temperature Pen

Operations Manual

YSI ORP15 OVERVIEW

A. Description

2. Graphic LCD screen

3. Keypad

4. Belt clip (Do not remove screw.)

5. Electrode collar

6. Electrode & ATC assembly – outside o-ring on
electrode is yellow and inside o-ring is black.
(Electrode cap shown covering electrode.)

B. YSI ORP15 Keypad Layout

1. Battery cap

Hold – On/Off key

Store/Save key

Mode key

Scroll key

INITIAL INSPECTION AND ASSEMBLY

Carefully unpack the instrument and accessories, and inspect for shipping damages. Notify your

local dealer or YSI immediately (800-897-4151 or [e-mail]) of any damages or

missing parts. Save packing materials until satisfactory operation is confirmed.

BEFORE USING

A. Insert the Batteries

1. Remove the battery cap at the top of the unit.

2. Insert the set of batteries (included) ensuring correct polarities.

3. Securely replace battery cap.

B. Soak the Electrode

1. Remove the electrode cap covering the ORP15 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 2 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 “MODE” key for 7 seconds to enter “Date/Time Set Mode”.

2. Press “HOLD” key to select date or time parameters.

3. Press “MODE”

4. Press “STORE”

or “SCROLL” keys to increase and decrease values.

key for 2 seconds to return to “Measure Mode”.

C. Offset Calibration

1. Press “MODE” key for 2 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 “MODE” or “SCROLL” keys to increase and decrease values.

5. Press “STORE” key for 2 seconds to return to “Measure Mode” displaying absolute
ORP values.

6. Press “MODE” 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”. “MODE” 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”.

Note: The unit cannot be powered off in “Hold Mode”.

The unit is now ready for another measurement.

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”.