Hach MTC301 Manuel utilisateur

DOC022.53.80026

MTC301

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............................................................................................. 4

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

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

Section 5 Calibration.............................................................................................. 7

5.1 Calibration notes................................................................................................... 7

5.2 Calibration procedure........................................................................................... 8

Section 6 Sample measurement....................................................................... 8

6.1 Sample measurement notes................................................................................. 8

6.2 Sample measurement procedure......................................................................... 9

Section 7 Verify the calibration.......................................................................... 9

7.1 Verification procedure......................................................................................... 10

Section 8 Maintenance........................................................................................ 10

8.1 Clean the probe.................................................................................................. 10

8.2 Fill the probe....................................................................................................... 11

8.3 Replace the filling solution.................................................................................. 11

8.4 Storage............................................................................................................... 12

Section 9 Troubleshooting................................................................................. 13

Section 10 Consumables..................................................................................... 13

Table of Contents

Section 1 Product overview

The Intellical MTC301 series ORP probes are digital, combination electrodes that measure the

oxidation reduction potential (ORP/Redox) of wastewater, drinking water and general water samples.

The probes are refillable and have a built-in temperature sensor and a ceramic pin reference

junction. A 28-mL bottle of reference electrolyte filling solution is supplied with the probe. Refer to

Figure 1.

Note: Do not use the probe for measurements in organic solvents.

Figure 1 Probe overview

1 Probe soaker bottle with storage solution 5 Cable

2 Platinum electrode, reference junction and

temperature sensor

6 Probe soaker bottle holder

3 Filling-hole plug 7 Electrode filling and storage solution

4 Protective tape and filling hole

Section 2 Specifications

Specifications are subject to change without notice.

Specifications Details

Probe type Digital combination electrode with a refillable Ag/AgCl

reference and a built-in temperature sensor

Range ±1200 mV

Resolution 0.1 mV

Reference type Ag/AgCl

Reference junction Ceramic pin

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

Operating temperature 0 to 80 °C (32 to 176 °F)

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

Minimum immersion depth 20 mm (0.79 in.)

Body material (standard) Epoxy

English 3

Specifications Details

Reference potential versus Standard

Hydrogen Electrode

207 mV at 25 °C

Electrolyte filling solution 3 M KCl saturated with AgCl

Storage solution Hach pH electrode storage solution1 or 3 M KCl

Cable connection M12 digital output and connector

Dimensions Diameter: 12 mm (0.47 in.)

Length: 175 mm (6.9 in.) total; 103 mm (4.1 in.) below head

Cable length: MTC30101: 1 m (3.3 ft); MTC30103: 3 m

(9.8 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. 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.

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.

1Use of other storage solutions can cause permanent damage to the probe.

4 English

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.

CAUTION

Personal injury hazard. Glass components can break. Handle with care to prevent cuts.

Section 4 Preparation for use

N O T I C E

Make sure to remove the protective tape from the filling hole of new probes. A probe with a blocked

filling hole will not operate correctly.

New probes are filled with electrolyte filling solution and have a soaker bottle that contains storage

solution to keep the glass bulb and reference junction hydrated. Prepare the probe for calibration and

measurement as follows.

1. Remove the protective tape from the filling hole. Refer to Figure 2.

2. Rinse the reference junction and glass bulb with deionized water. Blot dry with a lint-free cloth.

3. If the inner filling solution is low, add more filling solution. Refer to Fill the probe on page 11.

4. 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.

5. Connect the probe to the meter.

6. Open the filling hole before use. Keep the level of the electrolyte filling solution above the level of

the measurement liquid during use. Refer to Figure 3.

English 5

Figure 2 Remove the protective tape

6 English

Figure 3 Probe position during use

1 Open filling hole 3 Level of calibration solution or sample

2 Level of electrolyte filling solution

Section 5 Calibration

The procedure that follows is applicable to meters that can connect to Intellical ORP (MTC) 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:

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

solution in the probe settings menu.

• Do not dilute the standard solution. Discard the standard solution after each calibration.

• If the calibration standard is ZoBell's ORP/Redox standard solution, calibrate the probe at a

solution temperature that is between 0 and 30 °C (32 to 86 °F). If the calibration standard is Light’s

solution, calibrate the probe at 25 °C (77 °F).

• 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.

• 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.

English 7

5.2 Calibration procedure

1. Go to the

calibrate menu.

Select the probe, if

applicable. The

display shows the

ORP/Redox

standard solution to

use for calibration.

2. Pour the fresh

standard solution

into a beaker.

3. Open the filling

hole.

4. Rinse the probe

with deionized water.

Dry the probe with a

lint-free cloth.

5. Put the probe in

the standard solution

with the sensor and

reference junction

fully in the solution.

Do not put the probe

on the bottom or

sides of the beaker.

6. Shake the probe

from side to side to

remove air bubbles.

7. Stir gently, then

read the ORP/Redox

value of the standard

solution. The display

shows the mV value

when the reading is

stable.

8. Save the

calibration.

Section 6 Sample measurement

The procedure that follows is applicable to meters that can connect to Intellical ORP (MTC) 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.

• For measurements in reducing-type samples, soak the probe in Reducing Solution for ORP

Electrodes for 3-10 minutes before the initial sample measurement. The soak time significantly

decreases the stabilization time.

• 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.

• 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.

8 English

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