Hach MTC101 Manual de usuario
DOC022.53.80033
MTC101
05/2021, Edition 5
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.............................................................................................. 6
5.1 Calibration notes................................................................................................... 6
5.2 Calibration procedure........................................................................................... 7
Section 6 Sample measurement....................................................................... 7
6.1 Sample measurement notes................................................................................. 7
6.2 Sample measurement procedure......................................................................... 8
Section 7 Verify the calibration.......................................................................... 8
7.1 Verification procedure........................................................................................... 9
Section 8 Maintenance........................................................................................... 9
8.1 Clean the probe.................................................................................................... 9
8.2 Remove or install the shroud.............................................................................. 10
8.3 Storage............................................................................................................... 11
Section 9 Troubleshooting................................................................................. 11
Section 10 Consumables..................................................................................... 12
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Table of Contents
2
Section 1 Product overview
The Intellical MTC101 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 have a non-refillable, gel-filled electrolyte and a built-in temperature sensor. The open
reference junction gives an optimum electrical connection between the sample and the electrolyte
and does not become clogged. The standard probes are for laboratory use. The rugged probes are
for field use. Refer to Figure 1.
Note: Do not use the probe for measurements in organic solvents.
Figure 1 Probe overview
1 Shroud (rugged model) 6 Locking ring (rugged model)
2 Probe storage cap 7 Rugged probe
3 Platinum electrode and temperature sensor 8 Probe soaker bottle holder or storage cap
4 Reference junction 9 Standard probe
5 Protective tape (rugged model) 10 Probe soaker bottle with storage solution
Section 2 Specifications
Specifications are subject to change without notice.
Specifications Details
Probe type Digital combination electrode with a non-refillable Ag/AgCl
reference and a built-in temperature sensor
Range ±1200 mV
Resolution 0.1 mV
Reference type Ag/AgCl
Reference junction Open
English 3
Specifications Details
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
Body material (field rugged) Epoxy/stainless steel
Reference potential versus
Standard Hydrogen Electrode
207 mV at 25 °C
Electrolyte Non-refillable gel reference element
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: MTC10101: 1 m (3.3 ft); MTC10103: 3 m (9.8 ft)
Dimensions (rugged) Diameter: 46 mm (1.8 in.)
Length: 223 mm (8.7 in.)
Cable length: MTC10105: 5 m (16.4 ft); MTC10110: 10 m
(32.8 ft); MTC10115: 15 m (49.2 ft); MTC10130: 30 m (98.4 ft)
Warranty 6 months 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.
1Use of other storage solutions can cause permanent damage to the probe.
4 English
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.
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 reference junction of new rugged probes. A probe
with a blocked reference junction will not operate correctly.
New probes come with a soaker bottle that contains storage solution to keep the glass bulb and
reference junction hydrated. New rugged probes come with protective tape over the reference
junction. Prepare the probe as follows.
1. Remove the soaker bottle or probe storage cap from the probe. Refer to Figure 2.
2. If a rugged probe, remove the protective tape from the reference junction. Refer to Figure 2.
3. Rinse the probe sensors and reference junction with deionized water. Blot dry with a lint-free
cloth.
4. For faster stabilization, soak the probe for 3 or more minutes in the sample before use.
5. 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.
6. Connect the probe to the meter.
English 5
Figure 2 Remove the protective tape
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.
• Remove the shroud before calibration. Refer to Remove or install the shroud on page 10.
6 English
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. Rinse the probe
with deionized water.
Dry the probe with a
lint-free cloth.
Rugged probes:
install the shroud.
4. 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.
5. Shake the probe
from side to side to
remove air bubbles.
6. Stir gently, then
read the ORP/Redox
value of the standard
solution. The display
shows the mV 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 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.
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• 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 10. 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. If the samples
contain reducing
agents, soak the
probe in Reducing
Solution for ORP
Electrodes for 3 to
10 minutes.
2. Rinse the probe
with the sample. Dry
the probe with a lint-
free cloth.
Rugged probes:
install the shroud.
3. Put the probe in
the sample with the
sensor and
reference junction
fully in the sample.
Do not put the probe
on the bottom or
sides of the beaker.
4. Shake the probe
from side to side to
refresh the reference
junction and remove
air bubbles.
Rugged probes:
move the probe up
and down to remove
air bubbles.
5. Stir gently, then
read the ORP/Redox
value of the sample.
The display shows
the mV value when
the reading is stable.
Section 7 Verify the calibration
Measure the value of a fresh ORP/Redox standard solution to make sure that the result is accurate.
Refer to the procedure that follows. 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.
8 English
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