SPECIFICATIONS FIGURE 1 DESCRIPTION DIGITAL OXYGEN

SPECIFICATIONS FIGURE 1 DESCRIPTION DIGITAL OXYGEN
SPECIFICATIONS
DIGITAL OXYGEN METER OPERATION
Ranges:
Dissolved Oxygen
Oxygen hi Air
Temperature
0 to 20.0 mg/L (liter)
0 to 100.0% 02
0 to 50°C
Resolution:
Dissolved Oxygen
Oxygen
Temperature
0.1 mg/L
0.1% 02
0.1°C
Accuracy:
Dissolved Oxygen
Oxygen
Temperature
± 0.4 mg/L
±0.7% 02
±0.8°C, ±1.5°F
Probe Compensation
and Adjustment:
Sampling Time:
Data Output:
Case:
Fail safe:
Power:
Accessories
Supplied:
Temp:
Salt:
Height
0 to 50 °C, automatic
0 to 39% Salt
0 to 3900 meters
approximately 0.4 seconds
RS-232 PC serial Interface
ABS plastic
Low battery Indicator
one (1) 9-Volt alkaline battery
carrying case, oxygen probe, spare
diaphragms (two), electrolyte for probe,
battery, Traceable® Certificate, instructions.
FIGURE 1
DESCRIPTION
4-1
4-2
4-3
4-4
4-5
4-6
4-7
4-8
4-9
4-10
4-11
4-12
4.43
4-14
4-15
4-16
4-17
4-18
4-19
4-20
4-21
LCD Display
Power on/ff Button
Data Hold Button: press to hold reading
°C/°F button
LCD contrast Adjustment Knob
Memory Record Button: press to record results.
Memory Recall Button: press to show minimum and
maximum readings.
Factor Adjustment Button
Zero Button
% Salt Button
DO/02 Button
02 Calibration Button
Mountain Height Button
Battery Compartment
Probe Input Socket
RS-232 Output Socket
Oxygen Probe
Temperature sensor
Probe head with diaphragm
Protection cover for probe head
Oxygen Probe Plug
1.
This unit has been shipped with Electrolyte Liquid
in the sensor. This enables the probe to correctly
report oxygen. If calibrating the meter is difficult or if
the meter readings are unstable, then it is possible
that there is insufficient or no electrolyte in the
sensor. SEE REPLACING ELECTROLYTE on how
to fill the sensor.
2. Before use, the unit must be calibrated. Disconnect
the OXYGEN PROBE PLUG (4-18, fig. 1) from the
socket on top of the unit labeled INPUT (4-15, fig. 1).
3. Turn the meter on by switching the POWER
BUTTON (4-2, fig. 1) to the right.
4. Select 02 by sliding the O2 /DO selector (4-11, fig. 1)
to this position.
5. Press the ZERO BUTTON (4-9, fig. 1). The display
will show 0.
6. Connect the OXYGEN PROBE PLUG (4-18,
fig. 1) to the socket on top of the unit labeled INPUT
(4-15, fig. 1). Wait at least five (5) minutes until the
displayed values stabilize and no longer fluctuate.
7. Press the 02 CALIBRATION BUTTON (4-12, fig. 1).
The display will show either 20.8 or 20.9, the typical
oxygen percentage in the air.
NOTE: Calibrate the meter In a large, well
ventilated environment for best results.
8. To measure Dissolved oxygen, slide the O2 /DO
selector (4-11, fig. 1) to the DO position.
9. Depending on your application, you may need to
adjust the % salt compensation of the probe. Press
% SALT BUTTON (4-10, fig. 1). The Display will
show an “S” for salinity, and 0%. Press the FACTOR
ADJUSTMENT BUTTON (4-8, fig. 1) once. This will
add 1% to the original salt %. Continue pressing
this button until it reaches the desired value. When
complete, press % SALT BUTTON (4-10, fig. 1).
10. If your measurement is not taking place at sea level,
you will need to adjust the Height compensation.
Press the MT BUTTON (4-13, fig. 1) The Display will
show an “H” for height and a 0 for zero sea level.
Press the FACTOR ADJUSTMENT BUTTON
(4-8, fig. 1) once. This will add 100 meters. Continue
pressing this button until it reaches the desired
value. When complete, press MT BUTTON
(4-13, fig. 1).
11. Immerse the probe at least 10 cm into the liquid
being measured. This ensures that the probe will
measure the temperature of the liquid and the
automatic temperature adjustment will take place.
Allow a few minutes for the probe temperature reach
the temperature of the liquid. If there is more than a
few degrees of difference between the temperature
of the liquid and the probe, allow more time for the
probe temperature to adapt.
12. To measure the dissolved oxygen content, the
velocity of the liquid being measured must be at
least 0.2-0.3 m/s. To achieve this, immerse the
probe in the solution and gently shake it. For a more
accurate measurement, use a magnetic agitator to
ensure a certain velocity. Indicate that the value is a
“held” value. To cancel the data hold feature, simply
press the HOLD BUTTON a second time.
13. After use, rinse the probe thoroughly with tap water.
DATA HOLD
To hold a measurement on the display, press the HOLD
BUTTON (4-3, fig. 1) while a measurement is being
taken. The LCD display will show DH in the upper left
portion of the display to indicate that the value is a “held”
value. To cancel the data hold feature, simply press the
HOLD BUTTON a second time.
DATA RECORD
1. To record a measurement, press the RECORD
BUTTON (4-6, fig. 1) while a measurement is being
taken to hold the displayed value. The LCD display
will show REC in the lower left portion of the display
to indicate that the value is being recorded. To
deactivate the record function, press the RECORD
BUTTON again.
2. Memory Recall: Use the RECALL BUTTON
(4-7, fig. 1) to recall the minimum, maximum and
average readings. When the REC symbol appears on
the display, press the RECALL BUTTON (3-6, fig. 1)
once. The maximum recorded value will be displayed.
The letters “Max” will also appear on indicating that
this is the maximum or highest reading. A second
press of the RECALL BUTTON will display the
minimum reading. The letters “Min” will also appear
indicating that this is the minimum or lowest reading.
A third press of the RECALL BUTTON will display the
average reading. The letters “Avg” will also appear
indicating that this is the average reading. Note: The
Data Record function must be in use to utilize the
Memory recall features. Once the RECORD BUTTON
has been pressed a second time to deactivate the
data record function, the minimum, maximum and
values are no longer stored.
AUTOMATIC SHUT-OFF
The unit has an automatic shut off feature to prolong
battery life. If no button on the unit is pressed for ten
minutes, the unit will automatically shut off. To deactivate
this feature, press the RECORD BUTTON while a
measurement is being taken.
DISPLAY CONTRAST ADJUSTMENT
The Contrast of the LCD display may need to be
changed either because of light conditions, battery
voltage drop, or user preferences. The LCD display
contrast can be adjusted using the LCD DISPLAY
CONTRAST ADJUSTMENT KNOB (4-5, fig. 1). Simply
turn the knob to the left or right until the optimal LCD
contrast is obtained. If the display is filled with “88888”
when no reading is being taken, the contrast needs to be
adjusted. Turn the contrast knob to the left until a single
“0” appears.
RESETTING THE CPU SYSTEM
Certain incorrect operational procedures may disrupt the
meters CPU system. If the meter is not working properly,
the circuit may need to be reset. Set the DO/02 switch to
02 (4-11, fig. 1). Turn off the meter by pressing the power
button (4-2, fig. 1). Disconnect the probe from the meter.
Press the 02 CALIBRATION BUTTON (4-12, fig. 1)
continuously. While still pressing this button, press the
power button again. Then press the zero button (4-9,
fig. 1). Reconnect the probe and wait until the reading
stabilizes. Press the 02 CALIBRATION BUTTON (4-12,
fig. 1) again. Turn the power off. Begin normal operating
procedures again.
FIGURE 2
Probe filling Electrolyte
Probe head with
Diaphragm set
REPLACING THE ELECTROLYTE
1. When the meter cannot be calibrated
properly or if the reading is unstable, the
electrolyte may need to be refilled or the
diaphragm may be dirty and need to be
replaced. Unscrew the Probe Head
(8-3, fig. 2)
2. Pour out the old electrolyte from the Probe Head
(8-3, fig. 2).
3. Pour in the new Electrolyte into the container of the
probe head.
4. Reassemble the Probe Head (8-3, fig. 2) with the Probe
Body (8-1, fig. 2).
5.
RS—232 PC SERIAL INTERFACE
This unit features RS—232 output. A RS—232 OUTPUT
SOCKET (4-10, fig. 1) is located on the top of the unit. To
utilize this feature, connect the unit to a PC with the Data
Acquisition Accessory. (SEE ACCESSORIES SECTION).
Data is displayed in a 16 digit stream: D15 through D0.
Each digit indicates the following:
D0
end word
D1 to D4
Upper Display Reading, D1=LSD, D4=MSD
D5 to D8
Lower Display Reading, D5=LSD, D8=MSD
D9
Decimal Point (DP) for Upper Display:
0= no DP, 1=1 DP, 2= 2 DP , 3= 3 DP
D10
Decimal Point (DP) for Lower Display:
0= no DP, 1= 1 DP, 2=2 DP ,3= 3DP
D11/D12
Annunciator for Upper Display:
00= No Symbol, 01= °C, 02= °F,
03= %, 04= %RH, 05= % PH, 06= %O2
07= mg/L, 08= m/s, 09= knots, 10= Km/h,
11= Ft/mm, 12= mph, 13= ųS, 14=mS
15= Lux, 16= Ft-cd, 17=dB, 18=mV
D13
Annunciator for lower display:
0= No symbol, 1= °C, 2= °F
D14
Reading Polarity for the display:
0= both upper and lower displays are “+”,
1= upper is “–” and lower is “+”
2= upper is “+” and lower is “–”,
3= both upper and lower displays are “–”.
D15
start word
ACCESSORIES
Cat. No. 4138
Easy-Use™ Accessory Adaptor 115 VAC
Bonus Free Disk This demonstration disk shows the
data acquisition capabilities of this digital product when
connected to a computer. See Cat No. 4136 below to
order complete Data Acquisition System.
Cat No, 4136
Data Acquisition System Accessory Complete
DAS—3™ Data Acquisition System captures, displays,
and stores readings on any IBM-compatible PC.
Information can be imported into databases. Includes 3½
inch diskette and 5’ serial cable with D9F plug.
Cat No. 4325
Data Logger Complete DAS-4™ System captures and
stores up to 8000 bytes (over 1000 readings) from all
meters. Reading may be taken at intervals from 1 second
to 99 hours. Stored readings may be downloaded to
any PC and viewed. Can be read “as is” or imported
to spreadsheets, databases, and statistical programs.
Supplied with 36-inch serial cable with D9F computer
plug, 3½ inch diskette (Windows®), and four AA alkaline
batteries. Size is 5 x 3 x 1 inches. Weight is 7 ounces.
WARRANTY, SERVICE, OR RECALIBRATION
For warranty, service, or recalibration, contact:
CONTROL COMPANY
4455 Rex Road
Friendswood, Texas 77546 USA
Ph. 281 482-1714
Fax 281 482-9448
E-mail sales@control3.com
www.control3.com
TRACEABLE ®
DIGITAL
OXYGEN METER
INSTRUCTIONS
Control Company is ISO 9001
Quality-Certified by DNV and
ISO 17025 accredited as a
Calibration Laboratory by A2LA.
Cat. No. 4326
Accessory Adaptor 115 VAC for Data Logger
BATTERY LIFE
If the letters “LBT” appear on the left corner of the
display, it indicates the battery is low and needs to be
replaced. To replace the battery, slide the battery cover
located on the back of the unit away from the unit.
Remove the old battery and replace it with a new 9-Volt
alkaline battery. Use an alkaline battery, NOT a regular or
heavy duty battery. Properly connect the battery. Replace
the battery cover. Incorrectly installed batteries may
damage electronics.
ALL OPERATIONAL DIFFICULTIES
If this oxygen meter does not function properly for any
reason, please replace the battery with a new 9-Volt
alkaline batteries (see Low Battery section). Low battery
power can occasionally cause any number of “apparent”
operational difficulties. Replacing the batteries with new
fresh batteries will solve most difficulties.
Traceable® is a registered trademark of Control Company.
©2007
Control Company. 92-4320-00 Rev. 0 103007
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