Hach CDC401 Series Manual de usuario

DOC022.53.80022

CDC401

05/2021, Edition 4

User Manual

Table of Contents

Section 1 Product overview................................................................................. 3

Section 2 Specifications........................................................................................ 3

Section 3 Safety information............................................................................... 4

3.1 Intended use ....................................................................................................... 4

3.2 Use of hazard information..................................................................................... 4

3.3 Precautionary labels............................................................................................. 5

3.4 Product hazards.................................................................................................... 5

Section 4 Preparation for use.............................................................................. 5

Section 5 Calibration............................................................................................... 5

5.1 Calibration notes................................................................................................... 5

5.2 Calibration procedure........................................................................................... 6

Section 6 Sample measurement.........................................................................6

6.1 Sample measurement notes................................................................................. 6

6.2 Sample measurement procedure......................................................................... 7

Section 7 Verify the calibration.......................................................................... 7

7.1 Verification procedure........................................................................................... 8

Section 8 Maintenance........................................................................................... 8

8.1 Clean the probe.................................................................................................... 8

8.2 Remove or install the shroud................................................................................ 9

8.3 Storage............................................................................................................... 10

Section 9 Troubleshooting................................................................................. 10

Section 10 Consumables..................................................................................... 11

Table of Contents

Section 1 Product overview

The Intellical CDC401 series conductivity probes are digital electrodes that measure the electrical

conductivity, salinity, resistivity or total dissolved solids (TDS) of wastewater, drinking water and

general water samples. The probes have a graphite, 4-pole conductivity cell and a temperature

sensor. The standard probes are for laboratory use. The rugged probes are for field use. Refer to

Figure 1.

Figure 1 Probe overview

1 Temperature sensor and conductivity cell 3 Shroud (rugged model)

2 Standard probe 4 Rugged probe

Section 2 Specifications

Specifications are subject to change without notice.

Specifications Details

Probe type Graphite, 4-pole conductivity probe

Conductivity range 0.01 μS/cm to 200.0 mS/cm

Cell constant 0.40 cm-1 ±10%

Conductivity resolution 0.0 to 19.99 μS/cm: 0.01 μS/cm

20.0 to 199.9 μS/cm: 0.1 μS/cm

200 to 1999 μS/cm: 1 μS/cm

2.00 to 19.99 mS/cm: 0.01 mS/cm

20.0 to 200.0 mS/cm: 0.1 mS/cm

Conductivity accuracy ±0.5% of reading

TDS (total dissolved solids) range 0 to 50,000 mg/L as NaCl

TDS resolution 0.0 to 19.99 mg/L: 0.01 mg/L

200 to 1999 mg/L: 1 mg/L

2.00 to 19.99 g/L: 0.01 g/L

20.0 to 50.0 g/L: 0.1 g/L

English 3

Specifications Details

TDS accuracy ±0.5% of reading

Sample salinity range 0 to 42 (ppt) (‰)

Salinity resolution 0.01 parts per thousand (ppt) (‰)

Salinity accuracy ±1 parts per thousand (ppt) (‰)

Temperature accuracy ±0.3 °C (±0.54 °F)

Operating temperature –10 to 110 °C (14 to 230 °F)

Storage temperature 5 to 40 °C (41 to 104 °F)

Minimum immersion depth 45 mm (1.77 in.)

Body material (standard) Noryl

Cable connection M12 digital output and connector

Dimensions Diameter: 15 mm (0.59 in.)

Length: 174 mm (6.9 in.) total; 90 mm (3.5 in.) below head

Cable length: CDC40101: 1 m (3.3 ft); CDC40103: 3 m (9.8 ft)

Dimensions (rugged) Diameter: 46 mm (1.8 in.)

Length: 223 mm (8.7 in.)

Cable length: CDC40105: 5 m (16.4 ft); CDC40110: 10 m

(32.8 ft); CDC40115: 15 m (49.2 ft); CDC40130: 30 m (98.4 ft)

Warranty 1 year on the probe. This warranty covers manufacturing

defects, but not improper use or wear.

Certifications CE, FCC/ISED

Section 3 Safety information

3.1 Intended use

The Intellical probes are intended for use by individuals who measure water quality parameters in the

laboratory or in the field. The Intellical probes do not treat or alter water.

3.2 Use of hazard information

D A N G E R

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

serious injury.

WARNING

Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death

or serious injury.

CAUTION

Indicates a potentially hazardous situation that may result in minor or moderate injury.

N O T I C E

Indicates a situation which, if not avoided, may cause damage to the instrument. Information that

requires special emphasis.

4 English

3.3 Precautionary labels

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

could occur if not observed. A symbol on the instrument is referenced in the manual with a

precautionary statement.

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

domestic or public disposal systems. Return old or end-of-life equipment to the

manufacturer for disposal at no charge to the user.

3.4 Product hazards

CAUTION

Chemical exposure hazard. Obey laboratory safety procedures and wear all of the

personal protective equipment appropriate to the chemicals that are handled. Refer to

the current safety data sheets (MSDS/SDS) for safety protocols.

CAUTION

Chemical exposure hazard. Dispose of chemicals and wastes in accordance with local,

regional and national regulations.

Section 4 Preparation for use

Prepare the probe as follows.

1. Rinse the probe with deionized water. Blot dry with a lint-free cloth.

2. Make sure that the meter has the correct date and time settings. The service-life time stamp in

the probe comes from the date and time settings in the meter.

Note: Some meters automatically open the date and time settings when the meter starts for the first time, or

after battery replacement.

3. Connect the probe to the meter.

Section 5 Calibration

The procedure that follows is applicable to meters that can connect to Intellical conductivity probes.

Refer to the applicable meter documentation for meter operation and probe-specific settings.

5.1 Calibration notes

Read the notes that follow before calibration.

• Do not dilute conductivity standards or samples.

• The meter shows the conductivity standard solution to use for calibration. If necessary, change the

standard solution in the probe settings menu.

• The conductivity value changes with temperature. The default probe settings apply a temperature

correction to adjust the conductivity measurements to the value at 25 °C.

• Use the default calibration options or change the options in the probe settings menu.

• Use the single display mode for calibration when more than one probe is connected to the meter (if

applicable).

• Calibrate the probes and verify the calibration regularly for best results. Use the meter to set

calibration reminders.

• The calibration data is stored in the probe. When a calibrated probe is connected to a different

meter with the same calibration options, a new calibration is not necessary.

English 5

• Air bubbles below the sensor when in solution can cause a slow response or error in the

calibration. Make sure to remove air bubbles during calibration.

• If the rugged probe does not easily go in the calibration container, remove the shroud. Refer to

Remove or install the shroud on page 9.

5.2 Calibration procedure

1. Go to the

calibrate menu.

Select the probe, if

applicable. The

display shows the

conductivity

standard solution to

use for calibration.

2. Pour the fresh

standard solution

into a beaker.

3. Rinse the probe

with deionized water.

Dry the probe with a

lint-free cloth.

4. Put the probe in

the standard solution

with the sensor fully

in the solution. Do

not put the probe on

the bottom or sides

of the beaker.

5. Shake the probe

from side to side to

remove air bubbles.

6. Stir gently, then

read the conductivity

value of the standard

solution. The display

shows the

temperature-

corrected

conductivity value

when the reading is

stable.

7. Save the

calibration.

Section 6 Sample measurement

The procedure that follows is applicable to meters that can connect to Intellical conductivity probes.

Refer to the applicable meter documentation for meter operation and probe-specific settings.

6.1 Sample measurement notes

Read the notes that follow before sample measurements.

• Rinse the probe with deionized water and dry with a lint-free cloth between measurements to

prevent contamination.

• If complete traceability is necessary, enter a sample ID and operator ID before measurement.

Refer to the meter manual for instructions.

6 English

• The meter can show the measured value as conductivity, TDS (total dissolved solids), salinity or

resistivity. Use the probe settings menu to change the parameter.

• If the probe is used to measure the salinity value for dissolved oxygen measurements, change the

parameter to salinity.

• The conductivity value changes with temperature. The default probe settings apply a temperature

correction to adjust the conductivity measurements to the value at 25 °C.

• The meter automatically saves the measurement data when the user manually reads each data

point and when the meter is set to read at regular intervals. The user must manually save each

data point when the meter is set to read continuously.

• Air bubbles below the sensor can cause a slow response or error in the measurement. Make sure

to remove air bubbles before and during measurements.

• If the probe is a rugged type, make sure to install the shroud before field use to prevent damage to

the sensing elements. Refer to Remove or install the shroud on page 9. The probe warranty

does not include such damage.

• To deploy a rugged probe at a distance, toss the probe body with a slow underhand throw. Do not

throw the probe by the cable to prevent damage to cable, the probe or the user.

6.2 Sample measurement procedure

1. Rinse the probe

with deionized water.

Dry the probe with a

lint-free cloth.

Rugged probes:

install the shroud.

2. Put the probe in

the sample with the

sensor fully in the

sample. Do not put

the probe on the

bottom or sides of

the beaker.

3. Shake the probe

from side to side to

remove air bubbles.

Rugged probes:

move the probe up

and down to remove

air bubbles.

4. Stir gently, then

read the conductivity

(or TDS, salinity,

resistivity) value of

the sample. The

display shows the

temperature-

corrected value

when the reading is

stable.

Section 7 Verify the calibration

Measure the value of a fresh conductivity standard solution to make sure the result is accurate. The

meter compares the selected standard solution value to the measured value and accepts or rejects

the measurement. The user can change the standard solution and acceptance criteria for verification

in the probe-specific settings.

Note: Password protection may prevent access to the acceptance criteria.

English 7

7.1 Verification procedure

1. Go to the

verification menu.

The display shows

the standard solution

to use for

verification.

Note: Menu name for

HQd meters: Run check

standard.

2. Pour the fresh

standard solution

into a beaker.

3. Rinse the probe

with deionized water.

Dry the probe with a

lint-free cloth.

4. Put the probe in

the standard solution

with the sensor fully

in the solution. Do

not put the probe on

the bottom or sides

of the beaker.

5. Shake the probe

from side to side to

remove air bubbles.

6. Stir gently, then

read the conductivity

value of the standard

solution. The meter

accepts or rejects

the result.

Section 8 Maintenance

8.1 Clean the probe

Clean the probe regularly to remove mineral or sample buildup on the electrodes. Symptoms of

contamination:

• Incorrect or irregular readings

• Slow stabilization times

• Calibration errors

• Sample material stays on the probe

1. Rinse the probe with deionized water. Dry the probe body with a lint-free cloth.

Note: Remove the shroud on a rugged probe before cleaning. Install the shroud after the probe is clean. Refer

to Remove or install the shroud on page 9.

2. Soak the probe in the applicable cleaning solution for the specified time. Refer to Table 1.

3. Rinse or soak the probe for 1 minute in deionized water. Dry the probe body with a lint-free cloth.

8 English

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