Hach sensION+ DO6 User manual

DOC022.97.90258

Manual

Manual de instruções

Manuel utilisateur

操作手册

07/2010, Edition 1

07/2010, Edición 1

07/2010, Edição 1

07/2010, Edition 1

2010

年7月，第一版

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sensION+ DO 6_HACH_0710.indd 2sensION+ DO 6_HACH_0710.indd 2 14/9/10 10:51:1814/9/10 10:51:18

ENGLISHESPAÑOLFRANÇAIS PORTUGUÊSCONTACT

中文

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Table of contents

1. Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . 3

2. General information . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.1. Safety information . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.1.1. Use of hazard information . . . . . . . . . . . . . . 4

2.1.2. Precautionary labels . . . . . . . . . . . . . . . . . . 4

2.2. General product information . . . . . . . . . . . . . . . . . . 4

3. Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.1. Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3.1.1. Component list . . . . . . . . . . . . . . . . . . . . . . 5

3.1.2. Accessories . . . . . . . . . . . . . . . . . . . . . . . . 5

3.2. Battery power . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3.2.1. Inserting the batteries . . . . . . . . . . . . . . . . . 6

3.3. Disconnecting/connecting the sensor . . . . . . . . . . . . 7

3.4. Carrying case . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

4. Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4.1. General information . . . . . . . . . . . . . . . . . . . . . . . . 8

4.2. User interface and browsing . . . . . . . . . . . . . . . . . . 8

4.2.1. Keyboard and display . . . . . . . . . . . . . . . . . 8

5. Set-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5.1. Atmospheric pressure . . . . . . . . . . . . . . . . . . . . . . . 9

5.2. Salinity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

6. Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

6.1. Polarisation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

6.2. Measurement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

6.2.1. Stability measuring . . . . . . . . . . . . . . . . . . . 11

6.2.2. Continuous measuring . . . . . . . . . . . . . . . . . 11

6.3. Changing measuring units (%/mg/L) . . . . . . . . . . . . 11

6.4. Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

6.4.1. One-point calibration . . . . . . . . . . . . . . . . . 12

6.4.1.1. Preparation . . . . . . . . . . . . . . . . . 12

6.4.1.2. Calibration . . . . . . . . . . . . . . . . . 12

6.4.2. Two-point calibration . . . . . . . . . . . . . . . . . 13

6.4.2.1. Preparation . . . . . . . . . . . . . . . . . 13

6.4.2.2. Calibration . . . . . . . . . . . . . . . . . 13

6.5. Manual calibration . . . . . . . . . . . . . . . . . . . . . . . . . 14

6.5.1. Preparation . . . . . . . . . . . . . . . . . . . . . . . . 14

6.5.2. Calibration . . . . . . . . . . . . . . . . . . . . . . . . 14

6.6. Readjusting temperature . . . . . . . . . . . . . . . . . . . . . 15

6.7. Restoring factory settings . . . . . . . . . . . . . . . . . . . . . 16

6.8. Disabling auto power off . . . . . . . . . . . . . . . . . . . . 16

6.9. Changing temperature units . . . . . . . . . . . . . . . . . . 16

6.10. Display backlighting . . . . . . . . . . . . . . . . . . . . . . . . 17

6.11. Shutting down the instrument . . . . . . . . . . . . . . . . . 17

7. Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

7.1. Cleaning the measuring instrument and accessories . . 18

7.2. Storing the instrument . . . . . . . . . . . . . . . . . . . . . . 18

7.3. Changing batteries. . . . . . . . . . . . . . . . . . . . . . . . . 18

8. Error messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

9. Accessories and spare parts . . . . . . . . . . . . . . . . . . 20

10. Limited warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Contact Information

ENGLISH

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1. Specifications

Subject to change without notice.

Specifications

Display

Liquid crystal, backlit, with pictograms

Keypad

Membrane, 5 keys

Saturation 0.0 to 199.9% and 200 to 250% (25°C)

Concentration 0.00 to 19.99 mg/L and 20.0 to 22.0 mg/L (25°C)

Reproducibility (± 1 digit)

Dissolved oxygen ≤ 0.2 of the measured value

Temperature ≤ 0.1 °C (≤ 0.1 °F)

Measuring error (± 1 digit)

Dissolved oxygen ≤ 0.5 of the measured value

Temperature ≤ 0.2 °C (≤ 0.4 °F)

Temperature

0.0 to 50.0°C (0 to 122°F)

Temperature compensation

Automatic, with NTC sensor

Correction of salinity and

atmospheric pressure

Automatic, with manual data entry

Standard calibrations

At 1 or 2 points. 0% and 100% saturation

Dimensions of the measuring instrument and ambient conditions

Operating temperature

0 °C to 50 °C (32 °F to 122 °F)

Storage temperature

–15 °C to 65 °C (5 °F to 149 °F)

Ambient conditions

80% relative humidity (non-condensing)

Weight

300 g

Size

186 x 73 x 38 mm

Additional technical data

Energy management

Automatic power off after 5 minutes of inactivity

Type of protection

IP 67

Power supply (batteries)

Three 1.5V AA batteries. Autonomy of over 500 hours

Connector

MP-5, five-contact multipin

Warranty

3 years

ENGLISH

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2. General information

As a result of constant improvements to our products sometimes differences may exist between this manual

and the instructions supplied with the instrument.

2.1. Safety information

Please, read carefully this information before installing and using the instrument !

Pay attention to all danger and caution statements.

2.2. General information

The

sensION ™+ DO 6

is a polarographic measuring instrument for dissolved oxygen. The instrument measures

the saturation (in %) or the concentration (in mg/L) and the temperature of the sample. The atmospheric pressure and

salt content are automatically corrected.

Before being able to read a measurement, you will need to connect a sensor (Fig. 3, pg. 7).

2.1.1. Use of hazard information

DANGER

Indicates a potentially or imminently hazardous situation that, if not avoided, will result in death

or serious injury.

WARNING

Indicates a potentially or imminently hazardous situation that, if not avoided, may result in death

or serious injury.

CAUTION

Indicates a potentially hazardous situation that, if not avoided, may result in minor or moderate

injury.

Important note: Indicates a situation that, if not avoided, could lead to damage to the instrument.

Important information that requires special emphasis.

Note: Information that supplements points in the main text.

2.1.2. Precautionary labels

Read all labels and tags attached to the instrument. Personal injury or damage to the instrument could

occur if not observed.

This symbol references the instruction manual for operation or safety information.

Electrical equipment marked with this symbol may not be disposed of in European public disposal

systems after 12 August of 2005. In conformity with European local and national regulations (EU

Directive 2002/96/EC), European electrical equipment users must now return old or end-of life

equipment to the Producer for disposal at no charge to the user.

Note: For return for recycling, please contact the equipment producer or supplier for instructions on

how to return end-of-life equipment, producer-supplied electrical accessories, and all auxiliary items

for proper disposal.

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3. Installation

3.1.1. Component list

Code Instrument Sensor Accessories Batteries Manual

LPV4500.97.0002

sensION ™+ DO 6

–– ––

✓✓

LPV4551.97.0002

sensION ™+ DO 6

LZW5120.97.0002

✓✓✓

ENGLISH

WARNING

Risk of falling. Measurements are made directly in situ with this instrument. To prevent the risk of

falling, ensure compliance with all local safety regulations on securing with ropes and on the use of

adequate protective clothing and footwear.

Risk of injury. Do not attach the measuring instrument to your body. The measuring sensor could

be accidentally caught in a motor or stirrer and could endanger the user through the connected

sensor cable.

3.1. Content of

sensION ™+ DO 6

After removing the instrument, check each part for possible damage. All components on the attached list

must be present. If there are any missing or damaged parts, contact the manufacturer or distributor.

3.1.2. Accesorios

• Carrying case.

• Sensor electrolyte (25 mL).

• Replacement membrane

• Two 90-mL bottles for sample and sensor

cleaning.

• Tube for calibration.

Fig. 1. Equipment composition

DO6

sensION

™

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3. Installation

3.2. Battery power

WARNING

Risk of fire or explosion. Use only AA alkaline batteries for the measuring instrument and ensure that

the batteries are correctly inserted in their compartment. Inserting batteries incorrectly can damage

the instrument and cause fires or explosions.

The measuring instrument works with three batteries (1.5 V, AA).

The batteries supplied have a useful life of approximately 500 hours.

Important note: never use different types of batteries together.

Important note: if the measuring instrument is not going to be used for a long period of time, remove

the batteries to prevent leakage in the instrument.

3.2.1. Inserting the batteries

1. Open the lid of the battery compartment by pressing and pulling on the tab.

2. Insert the batteries supplied (1.5 V AA). Note the polarity markings inside the battery compartment.

3. Close the lid of the battery compartment.

Fig. 2. Inserting the batteries

1

Tab

2

Battery compartment lid

3

Batteries

4

Battery compartment

+

2

1

3

4

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3. Installation

ENGLISH

3.3. Disconnecting/connecting the sensor

The

sensION ™+ DO 6

kits are supplied with the sensor attached to the instrument.

Fig. 3. Disconnecting/connecting the sensor to the measuring instrument

Sensor disconnection

Sensor connection

Important: do not unscrew the connector.

3.4. Carrying case

The carrying case can be used as a support for both, instrument and sensor, see figure:

Electrode position

when it is not in use.

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4. Start-up

4.1. General information

Important note: before start-up, make sure that the sensor is connected to the measuring instrument.

Fig. 4. Keypad description

Display

1 Measured DO values (mg/L or %).

2 Temperature.

3 Measuring time (hh:mm:ss).

4 Units of measurement.

5 Battery indicator.

Keypad

- Instrument on/off.

- Display light on.

- Start of measuring.

- Start of calibration.

- Selection of temperature units.

- Entry of numerical values during

set-up.

5

4

4.2 User interface and navigation

4.2.1 Keyboard and display

Figure 4 indicates the instrument keys and display.

1. Connect the sensor (if necessary) to the measuring

instrument (Fig. 3, pg. 7).

2. Turn on the instrument.

3. Perform calibration (see pg. 12-14).

4. Take measurement (see pg.10).

Note: With the instrument switched off,

- Press the

key and the instrument will begin

measuring.

- Press the

key and the instrument will begin

calibration.

Software version. Instrument

serial number.

Standby screen.

1

2

3

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5. Set-up

The

sensION ™+ DO 6

is supplied with the following

parameters:

– Atmospheric pressure: 1013 mb.

– Salinity: 0.0 g/L.

To display and/or modify these pa-

rameters, follow the diagram below.

5.1. Atmospheric pressure

Enter the atmospheric pressure value for the instrument to make the relevant compensation.

5.2. Salinity

Enter the salinity value of the sample to be measured. This is deter-

mined with a conductivity measurement.

Important note: salinity only affects the DO concentration

measurement (mg/L).

2 s

2 s 2 s

2 s

Conductivity (mS/cm) NaCl (g/L)

1.9 1.0

3.7 2.0

7.3 4.0

10.9 6.0

17.8 10.1

25.8 15.1

33.6 20.2

41.2 25.4

48.9 30.6

56.3 35.8

62.2 40.0

69.4 45.3

75.7 50.0

Conversion table

specific conductivity/salinity

ENGLISH

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6. Operation

6.1. Polarisation

The sensor must be connected and polarized before calibration. The measuring instrument polarizes the

sensor whenever it is connected, even if it is switched off.

Required polarisation

The sensor must be polarised 6 hours before use if:

• it is not connected to the measuring instrument

• the batteries have been inserted for the first time, they are running low or they need changing

The sensor must be polarised for 10 approximately minutes if the sensor is disconnected from the measuring

instrument for less than 5 minutes.

6.2. Measurement

1. Press

to turn on the instrument.

2. Remove the sensor protector.

3. Clean the sensor with deionized water.

4. Stir the sensor uniformly in the sample, holding it by the top.

Important notes: the instrument must be calibrated before taking the first reading.

The DO sensor consumes oxygen in the measured solution; hence, the liquid in contact with the membrane

needs to be renewed for a correct measurement. Otherwise, the reading will gradually drop. Gently stir the

liquid to be measured using the sensor. The minimum flow must be 0.3 mL/s.

Before measuring, the sensor must be fully polarised.

Salt content affects oxygen measurement when the result is expressed in mg/L and it must be adjusted

manually. To do this, measure the conductivity of the sample, determine the salt content (see table on pg. 9) and

manually enter it in the instrument.

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6. Operation

ENGLISH

+

Stability

measuring

Continuous

measuring

6.2.1. Stability measuring

Follow the diagram.

The reading is not locked on the screen until the sen-

sor signal varies less than 0.1% DO (0.125 nA) for

15 sec.

Once the reading has stabilized, the screen lights up

for 2 sec.

6.2.2. Continuous measuring

Once stability measuring has begun, press the

key twice.

The instrument displays the measured value directly on

screen at all times.

The continuous reading should always be started after

beginning a stability reading (see diagram).

To end a continuous reading, press

.

The display will light up for 2 sec.

Note: if the measuring instrument is not used for 5 min-

utes, it will shut off automatically.

6.3. Changing measuring units (%/mg/L)

To change the units of measurement from % to mg/L or vice versa.

2 s

In Stability measuring, hold down

the

key for 2 s.

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6. Operation

Screw the

sensor

to the 1st tube.

6.4. Calibration

The sensor and the measuring instrument must be calibrated correctly to obtain precise measurements.

Important notes:

The sensor must be connected and polarized before calibration (see sensor manual).

During calibration, the membrane must not enter into contact with the surface of the water. The membrane

must remain dry since water droplets can affect calibration.

Fig. 5. Preparación

1 2 3 4

6.4.1.1. Preparation

1. Unscrew the sensor protector.

2. Add a small amount of water to the

calibrator tube.

3. Empty the excess water by shaking

gently.

4. Screw the calibrator tube to the sensor.

6.4.1. One-point calibration

6.4.1.2. Calibration

Follow the diagram.

One-point calibration is performed in air saturated water,

100% DO.

This is the most common type of calibration.

Note:

If calibration is not performed correctly, the membrane must

be cleaned and the electrolyte changed (see sensor manual).

The calibration is correct if an oxygen content of over 98% is

displayed when taking a measurement in the calibrator tube.

A value of over 99% is optimal.

If the measuring instrument is not used for 5 minutes, it shuts

off automatically.

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6. Operation

ENGLISH

6.4.2. Two-point calibration

6.4.2.1. Preparation

1. Unscrew the sensor protector.

2. Dip the sensor into an oxygen-free solution.

3. Stir the sensor gently.

6.4.2.2. Calibration

Follow the diagram.

Note:

To perform a two-point calibration, you must be certain

that the solution is oxygen-free; otherwise, one-point

calibration (100% DO) using the calibrator tube is

preferable.

If calibration is not performed correctly, the membrane

must be cleaned and the electrolyte changed (see sen-

sor manual). The calibration is correct if an oxygen

content of over 98% is displayed when taking a mea-

surement in the calibrator tube. A value of over 99%

is optimal.

If the measuring instrument is not used for 5 minutes, it

shuts off automatically.

Dip the sen-

sor into an

oxygen-free

solution

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6. Operation

6.5. Manual calibration

Important note: before turning on the instrument, check that the DO

sensor is connected and polarised.

Manual readjustment of the dissolved oxygen measured within the

range.

When readjusting DO, the instrument behaves as though it were per-

forming a one-point calibration.

6.5.1. Preparation

1. Unscrew the sensor protector.

2. Rinse the sensor with deionized water.

3. Dip the sensor into the solution in which manual calibration is to be

performed.

Note: Before beginning manual calibration, you must take a measure-

ment in the standard to be used in the calibration.

6.5.2. Calibration

Stir gently holding the sensor by the handle.

Follow the diagram.

(1)

Hold down

and then press .

Note: If the measuring instrument is not used for 5 minutes, it shuts off

automatically.

If errors occur during calibration, an error message will appear on screen

(see pg. 19).

Before beginning manual calibration, you must take a measurement in the

standard to be used in the calibration.

Important note: to exit calibration without saving the adjustment,

press

.

(1)

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6. Operation

ENGLISH

6.6. Readjusting temperature

The instrument can correct the deviation of a temperature

probe (built into DO sensors) at 25°C and 85°C (77°F

and 185°F).

This allows the instrument to be used as a precision ther-

mometer.

Follow the diagram.

2 s

Enter the correction of the

temperature sensor at

25 °C (77 °F).

Enter the correction of the

temperature sensor at

85 °C (185 °F).

To exit adjust-

ment without sav-

ing the data.

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6. Operation

6.7. Restoring factory settings

2 s

6.9. Changing temperature units

The instrument is shipped ready to measure temperature and express the values in °C.

Follow the diagram to change the units to °F.

6.8. Disabling auto power off

If the measuring instrument is not used for 5 minutes, it turns itself off

automatically. This automatic power off feature can be disabled.

2 s

etc.

Automatic power

off is disabled

Stable measurement

The current calibration can be erased and restored to the factory

settings.

(1)

(1) Press the

keys simultaneously.

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