Control Company DISSOLVED OXYGEN PEN User Manual

SPECIFICATIONS
Dissolved Oxygen—
Range: 0.0 to 20.0 mg/L
Resolution: 0.1

Dissolved Oxygen Air Saturation—
Range: 0.0 to 100.0%
Resolution: 0.1

Temperature—
Range: 32.0 to 122.0 °F / 0.0 to 50.0 °C
Resolution: 0.1°

Automatic Temperature Compensation—
Range: 32.0 to 122.0 °F / 0.0 to 50.0 °C

Sensor—
Type: Polarographic with integrated

temperature sensor

Update Rate: 1 second

Battery: 4 each AAA (1.5V)

CALIBRATION CHECK

Prior to each use, the meter’s calibration should be
checked to insure accurate readings.

1. Remove the protective rubber cover from the
probe head.

◄

2. Press the POWER button to turn the meter on.

3. Set the display mode to %O2 (see the “Selecting
%O2 or mg/L” section).

4. Wait until the upper display stops  uctuating and

is stable, this could take up to 3 minutes.

5. Press and release the HOLD button (“HOLD”
will appear on the display).

6. Press and release the REC button, “CAL” will

 ash on the display and the meter will

countdown from 30 and then show “END”.

This upper display should read 20.8 %O2 or

20.9 %O2. If it does not, please see the “Probe
Maintenance” section.

7. Take the desired measurements (see the
“Dissolved Oxygen Measurement” and/or the
“Dissolved Oxygen Air Saturation Measurement”
section).

DISSOLVED OXYGEN MEASUREMENT

1. Check the meter’s calibration (see the
“Calibration Check” section).

2. Set the display mode to mg/L (see the
“Selecting %O2 or mg/L” section).

3. Select the desired temperature display mode
(see the “Selecting °F or °C” section).

4. To insure Automatic Temperature Compensation,
immerse the probe head and temperature
sensor completely. If Automatic Temperature
Compensation is not desired, simply immerse
the tip of the probe head.

For accurate Automatic Temperature Compensation,
the temperature sensor must reach equilibrium
with the liquid being measured, this could take
several minutes.

5. Insure that there is adequate movement of
the liquid around the tip of the probe head
(0.2 - 0.3 meters per second minimum). This
can be achieved by stirring the meter in the
liquid, or by the use of a magnetic agitator if in
a laboratory environment.

6. Take the desired measurements.

7. Press the POWER button to turn the meter off.
To preserve battery life, always turn the meter
off when not in use.

8. Rinse the probe head with tap water and
replace the protective rubber cover. Always
replace the protective rubber cover to prevent
damage to the probe head.

If no button is pressed for ten (10) minutes, the
meter will turn off automatically to preserve battery
life (see the “Automatic Shutoff” section).

DISSOLVED OXYGEN AIR SATURATION
MEASUREMENT

1. Check the meter’s calibration (see the
“Calibration Check” section).

2. Set the display mode to %O2 (see the “Selecting
%O2 or mg/L” section).

3. Select the desired temperature display mode
(see the “Selecting °F or °C” section).

4. Take the desired measurements.

5. Press the POWER button to turn the meter off.
To preserve battery life, always turn the meter
off when not in use.

6. Replace the protective rubber cover. Always
replace the protective rubber cover to prevent
damage to the probe head.

If no button is pressed for ten (10) minutes, the
meter will turn off automatically to preserve battery
life (see the “Automatic Shutoff” section).

SELECTING %O2 OR mg/L

The %O2 display mode is for measuring the dissolved
oxygen saturation in air. The mg/L display mode is for
measuring the dissolved oxygen in liquids.

The following procedure is used to change the
display from %O2 to mg/L, or from mg/L to %O2.

1. Press the POWER button to turn the meter on.

2. Press and hold the HOLD button. After
approximately three (3) seconds, the display
will switch to the opposite unit of measure. If
the meter had been displaying %O2, it will now
display mg/L, and vice-versa.

3. Release the HOLD button.

The meter will always default to the %O2
display mode when turned on.

SELECTING °F OR °C

The following procedure is used to change the
temperature display from °F to °C, or from °C to °F.

1. Press the POWER button to turn the meter on.

2. Press and hold the REC button. After
approximately three (3) seconds, the
temperature reading will switch to the opposite
unit of measure. If the meter had been displaying
°F, it will now display °C, and vice-versa.

3. Release the REC button.

The unit of measure selected will be the default
unit of measure for temperature until changed.

HOLD FUNCTION

The hold function allows the readings on the
display to be “frozen” so that they may be
recorded.

1. Press and release the HOLD button to “freeze”
the display at the current reading. “HOLD” will
appear at the top of the display.

2. Once the reading has been recorded, press and
release the HOLD button to return the display to
the current reading. “HOLD” will no longer
appear on the display.

RECORD MODE (Min/Max Memories)

While in the Record Mode, the maximum and
minimum dissolved oxygen readings will be
recorded. While in the Record Mode, the
Automatic Shutoff feature is disabled so that long
term monitoring may be performed.

1. To enter the Record Mode, while taking
measurements, press and release the REC

button. “REC” will appear on display.

2. To recall the maximum and minimum readings
achieved since entering the Record Mode
(“REC” appearing on the display), press and
release the REC button.

3. The  rst press of the REC button will display
the maximum reading achieved since entering
the Record Mode. (“REC MAX” will appear on
the display).

4. The second press of the REC button displays
the minimum reading achieved since entering
the Record Mode. (“REC MIN” will appear on
the display).

5. To return the display to the current reading,
press and release the HOLD button. “MAX” or
“MIN” will no longer appear on the display.

6. To exit from the Record Mode, press and hold
the REC button for 3 seconds. “REC” will no
longer appear on the display. The maximum

and minimum readings are automatically
cleared once the Record Mode has been exited.

AUTOMATIC SHUTOFF (Disable)

If no button has been pressed for ten (10) minutes,
the Automatic Shutoff feature will turn the meter off
to preserve battery life.

The automatic shutoff feature setting is overridden
while in the Record Mode. (See the “Record
Mode” section)

To disable the Automatic Shutoff feature, place the
unit into the Record Mode (see the “Record Mode”
section).

PROBE MAINTENANCE
Electrolyte Solution Replacement

If the calibration check does not return the desired
results (see the “Calibration Check” section) or if
the readings are unstable, it may be necessary to
replace the electrolyte solution in the probe head.

1. Unscrew the probe head.

2. Pour out the old electrolyte solution from the
probe head.

3. Fill the probe head with fresh electrolyte
solution.

4. Replace the probe head and tighten securely,
do not overtighten.

ALL OPERATION DIFFICULTIES

If this meter does not function properly for any
reason, replace the batteries with a new, high
quality batteries (see the “Battery Replacement”
section). Low battery power can occasionally
cause an number of “apparent” operational

dif culties. Replacing the batteries with new fresh
batteries will solve most dif culties.

BATTERY REPLACEMENT

An erratic display, faint display,
no display, or a battery symbol
appearing on the display are all
indicators that the batteries need
replacement. The battery cover
is located at the bottom of the
unit. While holding the unit upside
down, unscrew the battery cover
by turning it counter-clockwise.
Remove the exhausted batteries
and replace them with four (4)
new AAA alkaline batteries. Make
certain to insert the new batteries
with the proper polarity as indicated by the “+” and
“–” symbols in the battery compartment. Replace
the battery cover and tighten securely.

ACCESSORIES
Cat. No. 7790– Replacement Probe Head

w/Diaphragm

Cat. No. 8024– Electrolyte Solution

TRACEABLE

DISSOLVED

OXYGEN

PEN

INSTRUCTIONS

®

Diaphragm Replacement

A damaged diaphragm can cause the calibration
check to return incorrect results (see the “Calibration
Check” section) or cause the readings to be
unstable or inaccurate. The diaphragm may be
damaged if it comes into contact with a solid
object, or is subjected to impacts. The diaphragm
is integrated into the probe head.

1. Unscrew the probe head.

2. Pour out the old electrolyte solution from the
probe head.

3. Fill the replacement probe head with fresh
electrolyte solution.

4. Place the new probe head on to the meter and
tighten securely, do not overtighten.

WARRANTY, SERVICE, OR RECALIBRATION

For warranty, service, or recalibration, contact:

CONTROL COMPANY

4455 Rex Road

Friendswood, Texas 77546 USA

Ph. 281 482-1714 • Fax [phone]

E-mail [e-mail] • www.control3.com

Control Company is ISO 9001 Quality-Certi ed by DNV and

ISO 17025 accredited as a Calibration Laboratory by A2LA.

Control Company Cat. No. 4319

Traceable® is a registered trademark of Control Company.

2009 Control Company. 92-4319-00 Rev. 0 111309

©