Control-company 4320 DIGITAL OXYGEN METER Manuel d'utilisateur télécharger pdf

Probe head with

Diaphragm set

Probe filling Electrolyte

SPECIFICATIONS

Ranges: Dissolved Oxygen 0 to 20.0 mg/L (liter)

Oxygen hi Air 0 to 100.0% 0

Temperature 0 to 50°C

Resolution: Dissolved Oxygen 0.1 mg/L

Oxygen 0.1% 0

Temperature 0.1°C

Accuracy: Dissolved Oxygen ± 0.4 mg/L

Oxygen ±0.7% 0

Temperature ±0.8°C, ±1.5°F

Probe Compensation Temp: 0 to 50 °C, automatic

and Adjustment: Salt: 0 to 39% Salt

Height 0 to 3900 meters

Sampling Time: approximately 0.4 seconds

Data Output: RS-232 PC serial Interface

Case: ABS plastic

Fail safe: Low battery Indicator

Power: one (1) 9-Volt alkaline battery

Accessories

Supplied: carrying case, oxygen probe, spare

diaphragms (two), electrolyte for probe,

battery, Traceable

Certiﬁ cate, instructions.

FIGURE 1

DESCRIPTION

4-1 LCD Display

4-2 Power on/ff Button

4-3 Data Hold Button: press to hold reading

4-4 °C/°F button

4-5 LCD contrast Adjustment Knob

4-6 Memory Record Button: press to record results.

4-7 Memory Recall Button: press to show minimum and

maximum readings.

4-8 Factor Adjustment Button

4-9 Zero Button

4-10 % Salt Button

4-11 DO/0

Button

4-12 0

Calibration Button

4.43 Mountain Height Button

4-14 Battery Compartment

4-15 Probe Input Socket

4-16 RS-232 Output Socket

4-17 Oxygen Probe

4-18 Temperature sensor

4-19 Probe head with diaphragm

4-20 Protection cover for probe head

4-21 Oxygen Probe Plug

DIGITAL OXYGEN METER OPERATION

This unit has been shipped with Electrolyte Liquid 1.

in the sensor. This enables the probe to correctly

report oxygen. If calibrating the meter is difﬁ cult or if

the meter readings are unstable, then it is possible

that there is insufﬁ cient or no electrolyte in the

sensor. SEE REPLACING ELECTROLYTE on how

to ﬁ ll the sensor.

Before use, the unit must be calibrated. Disconnect 2.

the OXYGEN PROBE PLUG (4-18, ﬁ g. 1) from the

socket on top of the unit labeled INPUT (4-15, ﬁ g. 1).

Turn the meter on by switching the POWER 3.

BUTTON (4-2, ﬁ g. 1) to the right.

Select 04.

by sliding the O

/DO selector (4-11, ﬁ g. 1)

to this position.

Press the ZERO BUTTON (4-9, ﬁ g. 1). The display 5.

will show 0.

Connect the OXYGEN PROBE PLUG (4-18, 6.

ﬁ g. 1) to the socket on top of the unit labeled INPUT

(4-15, ﬁ g. 1). Wait at least ﬁ ve (5) minutes until the

displayed values stabilize and no longer ﬂ uctuate.

Press the 07.

CALIBRATION BUTTON (4-12, ﬁ g. 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.

To measure Dissolved oxygen, slide the O8.

/DO

selector (4-11, ﬁ g. 1) to the DO position.

Depending on your application, you may need to 9.

adjust the % salt compensation of the probe. Press

% SALT BUTTON (4-10, ﬁ g. 1). The Display will

show an “S” for salinity, and 0%. Press the FACTOR

ADJUSTMENT BUTTON (4-8, ﬁ g. 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, ﬁ g. 1).

If your measurement is not taking place at sea level, 10.

you will need to adjust the Height compensation.

Press the MT BUTTON (4-13, ﬁ g. 1) The Display will

show an “H” for height and a 0 for zero sea level.

Press the FACTOR ADJUSTMENT BUTTON

(4-8, ﬁ g. 1) once. This will add 100 meters. Continue

pressing this button until it reaches the desired

value. When complete, press MT BUTTON

(4-13, ﬁ g. 1).

Immerse the probe at least 10 cm into the liquid 11.

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.

To measure the dissolved oxygen content, the 12.

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.

After use, rinse the probe thoroughly with tap water.13.

DATA HOLD

To hold a measurement on the display, press the HOLD

BUTTON (4-3, ﬁ g. 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

To record a measurement, press the RECORD 1.

BUTTON (4-6, ﬁ g. 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.

Memory Recall: Use the RECALL BUTTON 2.

(4-7, ﬁ g. 1) to recall the minimum, maximum and

average readings. When the REC symbol appears on

the display, press the RECALL BUTTON (3-6, ﬁ g. 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, ﬁ g. 1). Simply

turn the knob to the left or right until the optimal LCD

contrast is obtained. If the display is ﬁ lled 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/0

switch to

(4-11, ﬁ g. 1). Turn off the meter by pressing the power

button (4-2, ﬁ g. 1). Disconnect the probe from the meter.

Press the 0

CALIBRATION BUTTON (4-12, ﬁ g. 1)

continuously. While still pressing this button, press the

power button again. Then press the zero button (4-9,

ﬁ g. 1). Reconnect the probe and wait until the reading

stabilizes. Press the 0

CALIBRATION BUTTON (4-12,

ﬁ g. 1) again. Turn the power off. Begin normal operating

procedures again.

FIGURE 2

REPLACING THE ELECTROLYTE

When the meter cannot be calibrated 1.

properly or if the reading is unstable, the

electrolyte may need to be reﬁ lled or the

diaphragm may be dirty and need to be

replaced. Unscrew the Probe Head

(8-3, ﬁ g. 2)

Pour out the old electrolyte from the Probe Head 2.

(8-3, ﬁ g. 2).

Pour in the new Electrolyte into the container of the 3.

probe head.

Reassemble the Probe Head (8-3, ﬁ g. 2) with the Probe 4.

Body (8-1, ﬁ g. 2).

1 2

Résumé du contenu

Page 1 - Probe filling Electrolyte

Probe head with Diaphragm setProbe filling ElectrolyteSPECIFICATIONSRanges: Dissolved Oxygen 0 to 20.0 mg/L (liter) Oxygen hi Air 0 to 100.0% 02

Page 2 - INSTRUCTIONS

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