Hach NT3100sc User manual

DOC023.97.90749
NT3100sc, NT3200sc
06/2023, Edition 4
User Manual
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Table of Contents
English..............................................................................................................................3
Français......................................................................................................................... 27
Español.......................................................................................................................... 52
Português...................................................................................................................... 78
中文............................................................................................................................... 102
日本語........................................................................................................................... 124
한국어........................................................................................................................... 147
.................................................................................................................................. 169
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Table of Contents
1 Specifications on page 3
2 General information on page 4
3 Installation on page 10
4 Startup on page 13
5 Operation on page 13
6 Maintenance on page 17
7 Troubleshooting on page 22
8 Replacement parts and accessories on page 23
A Instructions for laboratory measurements
on page 26
Section 1 Specifications
Specifications are subject to change without notice.
The product has only the approvals listed and the registrations, certificates and declarations officially
provided with the product. The usage of this product in an application for which it is not permitted is
not approved by the manufacturer.
Specification Details
Measuring principle UV absorption measurement, reagent-free
Measuring method NT3100sc: Sludge compensated, 2-channel beam path
NT3200sc: Sludge compensated, 3-channel beam path
Measuring path11 mm (0.04 inches), 2 mm (0.08 inches) or 5 mm (0.20 inches)
Measuring range NT3100sc NT3200sc
1 mm path: 0.1 to 90 mg/L NO3–N 1 mm path: 0.3 to 70 mg/L NO3–N, 0.4 to
92 mg/L NO2–N
2 mm path: 0.05 to 50 mg/L NO3–N 2 mm path: 0.15 to 34 mg/L NO3–N,
0.15 to 61 mg/L NO2–N
5 mm path: 0.02 to 25 mg/L NO3–N 5 mm path: 0.07 to 17 mg/L NO3–N,
0.06 to 23 mg/L NO2–N
Limit of detection (LOD)21 mm path: 0.1 mg/L NO3–N 1 mm path: 0.3 mg/L NO3–N, 0.4 mg/L
NO2–N
2 mm path: 0.05 mg/L NO3–N 2 mm path: 0.15 mg/L NO3–N, 0.15 mg/L
NO2–N
5 mm path: 0.02 mg/L NO3–N 5 mm path: 0.07 mg/L NO3–N, 0.06 mg/L
NO2–N,
Accuracy 21 mm path: ± 5% of the measured value
± 0.1 mg/L NO3–N
1 mm path: ± 4% of the measured value
± 0.6 mg/L NO3–N,
± 4% of the measured value ± 0.6 mg/L
NO2–N
2 mm path: ± 4% of the measured value
± 0.1 mg/L NO3–N < 22 mg/L,
±5 % of the measured value ± 0.1 mg/L
NO3–N ≥ 22 mg/L
2 mm path: ± 3% of the measured value
± 0.3 mg/L NO3–N,
± 3% of the measured value ± 0.2 mg/L
NO2–N
5 mm path: ± 3% of the measured value
± 0.05 mg/L for NO3–N ≤ 5 mg/L,
± 3% of the measured value ± 0.1 mg/L
for 5 mg/L < NO3–N < 13 mg/L,
± 5% of the measured value ± 0.1 mg/L
for NO3–N ≥ 13 mg/L
5 mm path: ± 3% of the measured value
± 0.1 mg/L NO3–N,
± 5% of the measured value ± 0.15 mg/L
NO2–N ≤ 6 mg/L,
± 5% of the measured value ± 0.24 mg/L
NO2–N > 6 mg/L
1Based on the probe version
2Measured with mono standard solution NO3–N for NT3100sc and with mono standard solutions
NO3–N and NO2–N for NT3200sc under laboratory conditions.
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Specification Details
Resolution 0.01 to 999.99
Sludge compensation Yes
Measuring interval 15, 30 seconds, 1, 5, 10, 30 minutes
Units mg/L, ppm
T100 response time 1 minute
Signal average 1 to 12 measurements
Power consumption 9 W
Cable length 10 m (33 ft)
Extension cables are available: 5, 10, 15, 20, 30 and 50 m. The maximum cable
length is 60 m (190 ft).
Environmental rating IP 68
Sensor pressure limit 0.5 bar (7.3 psi)
Ambient temperature 2 °C to 40 °C (36 °F to 100 °F), 95% relative humidity, non-condensing
Sample temperature 2 °C to 40 °C (36 °F to 100 °F), 95% relative humidity, non-condensing
Dimensions (Ø x L) 70 × 470 mm (3 × 18.5 inches) approximately
Weight 4.8 kg (10.6 lb) with 10 m cable
Altitude 2000 m (6562 ft) maximum
Pollution degree 2
Overvoltage category III
Environmental conditions Outdoor use
Sensor materials Enclosure: Stainless steel
Enclosure seals: Silicone
Wiper shaft, arm (5 mm) and wiper blade carrier (1 mm and 2 mm): Stainless steel
Wiper blade: Silicone
Measuring window: Quartz glass
Sensor cable: Polyurethane (PUR)
Cable gland: Stainless steel
Seal cable gland: Silicone HT
Process connection Immersion directly in media
Bypass with flow through unit
Sedimenter
Certifications CE, CMIM and UKCA approved, FCC, ISED
Warranty 1 year (EU: 2 years)
Section 2 General information
In no event will the manufacturer be liable for damages resulting from any improper use of product or
failure to comply with the instructions in the manual. The manufacturer reserves the right to make
changes in this manual and the products it describes at any time, without notice or obligation.
Revised editions are found on the manufacturer’s website.
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2.1 Safety information
The manufacturer is not responsible for any damages due to misapplication or misuse of this product
including, without limitation, direct, incidental and consequential damages, and disclaims such
damages to the full extent permitted under applicable law. The user is solely responsible to identify
critical application risks and install appropriate mechanisms to protect processes during a possible
equipment malfunction.
Please read this entire manual before unpacking, setting up or operating this equipment. Pay
attention to all danger and caution statements. Failure to do so could result in serious injury to the
operator or damage to the equipment.
Make sure that the protection provided by this equipment is not impaired. Do not use or install this
equipment in any manner other than that specified in this manual.
2.1.1 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.
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. A symbol on the instrument is referenced in the manual with a
precautionary statement.
This symbol, if noted on the instrument, references the instruction manual for operation and/or safety
information.
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.
This symbol indicates that a risk of electrical shock and/or electrocution exists.
This symbol indicates the need for protective eye wear.
This symbol indicates that the marked item requires a protective earth connection. If the instrument is
not supplied with a ground plug on a cord, make the protective earth connection to the protective
conductor terminal.
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This symbol, when noted on the product, identifies the location of a fuse or current limiting device.
This symbol indicates the presence of a UV light source that may cause eye and skin injury. Wear
appropriate protective equipment and obey all safety protocols.
2.1.3 Chemical and Biological Safety
D A N G E R
Chemical or biological hazards. If this instrument is used to monitor a treatment process and/or
chemical feed system for which there are regulatory limits and monitoring requirements related to
public health, public safety, food or beverage manufacture or processing, it is the responsibility of the
user of this instrument to know and abide by any applicable regulation and to have sufficient and
appropriate mechanisms in place for compliance with applicable regulations in the event of
malfunction of the instrument.
Normal operation of this device may require the use of chemicals or samples that are biologically
unsafe.
• Observe all cautionary information printed on the original solution containers and safety data
sheets prior to their use.
• Dispose of all consumed solutions in accordance with the local and national regulations and laws.
• Select the type of protective equipment suitable to the concentration and quantity of the dangerous
material being used.
2.1.4 Compliance and certification
CAUTION
This equipment is not intended for use in residential environments and may not provide adequate protection to
radio reception in such environments.
Canadian Radio Interference-Causing Equipment Regulation, ICES-003, Class A:
Supporting test records reside with the manufacturer.
This Class A digital apparatus meets all requirements of the Canadian Interference-Causing
Equipment Regulations.
Cet appareil numérique de classe A répond à toutes les exigences de la réglementation canadienne
sur les équipements provoquant des interférences.
FCC Part 15, Class "A" Limits
Supporting test records reside with the manufacturer. The device complies with Part 15 of the FCC
Rules. Operation is subject to the following conditions:
1. The equipment may not cause harmful interference.
2. The equipment must accept any interference received, including interference that may cause
undesired operation.
Changes or modifications to this equipment not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment. This equipment has been tested
and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC rules.
These limits are designed to provide reasonable protection against harmful interference when the
equipment is operated in a commercial environment. This equipment generates, uses and can
radiate radio frequency energy and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications. Operation of this equipment in a
residential area is likely to cause harmful interference, in which case the user will be required to
correct the interference at their expense. The following techniques can be used to reduce
interference problems:
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1. Disconnect the equipment from its power source to verify that it is or is not the source of the
interference.
2. If the equipment is connected to the same outlet as the device experiencing interference, connect
the equipment to a different outlet.
3. Move the equipment away from the device receiving the interference.
4. Reposition the receiving antenna for the device receiving the interference.
5. Try combinations of the above.
2.2 Icons used in illustrations
Manufacturer supplied
parts Mandatory action Do not use tools Do steps in reverse order
Do one of these
options
2.3 Intended use
The NT3100sc and NT3200sc probes are intended for use by water treatment professionals to make
sure that there is a consistently-low level of nitrate and nitrite in the municipal sewage at treatment
plants, surface water, untreated water and treated drinking water. Low nitrate and nitrite levels
prevent water toxicity exposure and/or make sure of regulatory compliance.
2.4 Theory of operation
Nitrate dissolved in water absorbs UV light with wavelengths below 250 nm. The nitrate and nitrite
absorption of UV light makes it possible to photometrically determine the dissolved nitrate and nitrite
concentrations without reagents. The sensor is put directly in the medium. The color of the medium
does not have an effect on the measurement because the measuring principle is based on the
analysis of invisible UV light.
2.5 Product overview
Use the NT3100sc probe to measure nitrate concentrations and the NT3200sc probe to measure
nitrate and nitrite concentrations. Refer to Figure 1.
Use the probe in activated sludge tanks in municipal sewage treatment plants, surface water,
untreated water and treated drinking water, or the outlet of wastewater treatment plants. Pumping
and conditioning are not necessary. Put the probe directly into the medium.
Note: Use the flow through unit when direct measurement in the medium is not possible or it is necessary to
measure a filtered sample (e.g., very high TSS3 content, sewage treatment plant inlet or waste dump leachate).
Connect the probe to an SC Controller for power, operation, data collection, data transmission and
diagnostics. Refer to the SC Controller manual for an overview of the controller.
The probe has a beam absorption photometer with turbidity compensation. A built-in wiper
mechanically cleans the measuring window.
Note: Enable the sludge mode to increase the number of concentration measurements done when the probe
measures in activated sludge. When sludge mode is active, several measurements are done to compensate for the
different sludge compositions.
Dissolved nitrate and nitrite, dissolved organics and particles absorb light, which has an effect on the
measurement absorbance value. The probe adjusts for this turbidity interference. However, there
may be applications where the combination of these compounds absorbs too much light. Thus, there
is not sufficient light transmitted to the sensors and inaccurate measurements occur. Make sure to
select the probe with the correct pathlength. Refer to Table 1 and Table 2.
3The TSS value is a recommendation and based on the substances of the wastewater.
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Table 1 Recommended pathlength—NT3100sc nitrate probe
Application
Pathlength
1 mm 2 mm 5 mm
Wastewater
Influent ✔ ✔
Nitrification/denitrification ✔ ✔
Nitrification/denitrification, more than 5,000 mg TSS/L sludge ✔
Effluent ✔ ✔
Drinking Water
Raw drinking water ✔ ✔
Finished water/distribution ✔
Table 2 Recommended pathlength—NT3200sc nitrate and nitrite probe4
Application
Pathlength (maximum mg/L NO3–N)
1 mm (max NO3–N) 2 mm (max NO3–N) 5 mm (max NO3–N)
Wastewater
Nitrification/denitrification ✔5 (30 mg/L) ✔ (5–10 mg/L)
Nitrification/denitrification, more than
5,000 mg TSS/L sludge
✔5 (25–30 mg/L) ✔(5–10 mg/L)
Anammox/nitritation mainstream ✔ (10–30 mg/L)
Effluent ✔5 (30–70 mg/L) ✔6 (20 mg/L) ✔ (5 mg/L)
Drinking Water
Finished water/distribution ✔5 (45–68 mg/L) ✔7 (15–20 mg/L) ✔8 (5 mg/L)
Note: After the complete installation of the NT3200sc, especially in sludge, it is possible that invalid values occur,
then the manufacturer recommends a matrix calibration. The matrix calibration makes sure to get a correct
measurement of the mixed NO2–N and NO3–N concentration. The matrix calibration will decrease the effect of the
light absorption caused by the unwanted and dissolved organics. Refer to Matrix calibration on page 16.
4When nitrate and nitrite are in the sample, the accuracy of NO2–N and the maximum NOx–N
concentrations decrease.
5Nitrite accuracy is limited.
6Nitrite accuracy is limited when NO3–N is more than 10 mg/L.
7Nitrite accuracy is limited when NO3–N is more than 18 mg/L.
8Only in low (approximately 0 mAbs/mm) UV absorbance matrix.
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Figure 1 Product overview
1 Probe 3 Probe cable
2 Measuring path with wiper
2.6 Product components
Make sure that all components have been received. Refer to Figure 2. If any items are missing or
damaged, contact the manufacturer or a sales representative immediately.
Figure 2 Product components
1 NT3100sc or NT3200sc 3 Wiper blade9 5 mm (5x)
2 Wiper blade9 1 mm or 2 mm (5x) 4 LZY261—Screw set, probe adapter for pole mount
9The wiper type depends on the probe version.
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Section 3 Installation
CAUTION
Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the
document.
3.1 Installation guidelines
• Do not use stainless steel probes in sea water or other corrosion-causing media (e.g., acids,
alkalis, chlorine-based compounds). Clean the probe immediately.
• Make sure that the measuring medium does not cause damage to the probe components.
• Do not replace the cable. If the cable has damage, contact the manufacturer.
• Make sure that the device cables do not cause a trip hazard and do not have sharp bends.
• Make sure that the cable is not routed near hot surfaces. Make sure not to put heavy objects on
the cable.
• Make sure that there are no unwanted materials in the optical path.
• Immediately set the controller to OFF if the probe sends out smoke, noxious fumes or gets hot.
Contact the manufacturer.
3.2 Installation overview
Figure 3 shows the probe installed with the optional bracket installation option. Figure 5 shows the
probe installed with the optional flow through unit. Refer to the documentation supplied with the
mounting hardware for more information.
Put the probe into the sample. Make sure that the optical path is fully immersed in the sample. Install
the sensor transversally to the flow direction of the sample so the particle on the windows are at a
minimum. Refer to Figure 4.
Note: Make sure that the probe does not touch the ground.
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Figure 3 Bracket installation
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Figure 4 Flow direction (top view)
Figure 5 Sensor with flow through unit installation
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3.3 Connect the probe to the controller
Connect the sensor cable to the quick-connect fitting of the SC Controller. Keep the device connector
caps for future use. Refer to Figure 6. Refer to the controller documentation for more information.
Note: Extension cables are available if a longer cable is necessary.
Figure 6 Connect the probe to the controller
Section 4 Startup
Connect the power cord to an electrical outlet with protective earth ground or set the circuit breaker
for the controller to on.
Section 5 Operation
5.1 User navigation
Note: Refer to the controller user manual for the keypad description and navigation information.
5.2 Configure the probe
Enter identification information, configure the measurement and change options for probe settings,
data handling and storage.
1. Make sure that the controller has the latest software installed. Refer to the controller user manual
for more information. (For the SC200 Controller, the minimum version is 2.06.)
2. Go to the device menu as follows:
• SC200 and SC1000 Controllers—Go to the main menu, then select Sensor setup. If
applicable, select the sensor.
Note: For older versions of the SC200 controller, select the Single measurements only setting.
• SC4500 Controller and Claros interface—Select the tile of the device, then select Device
menu.
3. Select Configuration.
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4. Select an option.
Note: The options that follow can show some differences in different controllers.
Option Description
Edit name Enters a description for the measurement site (default: serial number). Use the
description to identify the measurement locations (e.g., Aeration tank 1). The description
is saved with the measurement values in the controller data log.
Parameter Selects the measured parameter:
• NT3200sc—NO3-N, NO2-N, NOX-N (default) or NO3, NO2, NOX
• NT3100sc—NOX-N (default), NOX, NO3-N or NO3
Unit Sets the measurement units. Options: mg/L (default) or ppm
Measurement
interval
Sets the measurement interval. Options: 15, 30 seconds, 1, 5 (default), 10 or 30 minutes
Signal average Sets the number of saved measurements the controller uses to calculate the average
measurement: 1 to 12 (default: 3). The signal average setting decreases the variability
of measurements. The controller shows and saves the average measurement to the
data log. In addition, the controller updates the relays and analog outputs to the average
measurement.
Cleaning interval Sets the cleaning interval: 1 for each measurement (default), 1, 5, 10, 30 minutes, 1,
6 or 12 hours
Note: Changing the cleaning cycle can impact measurement results and the life time of
the wiper blades.
Wiper mode Sets the wiper cleaning cycle:
•Single—The wiper makes one movement, from one side to another, with each
cleaning cycle.
•Double A-B-A—The wiper makes two movements with each cleaning cycle. Starts at
position A, moves to position B and then returns to position A. One cleaning cycle A-
B-A is counted as two movements.
•Double B-A-B (default)— The wiper makes two movements with each cleaning
cycle. Starts at position B, moves to position A and then returns to position B. One
cleaning cycle B-A-B is counted as two movements.
Note: A and B are the two final positions of the wiper movement. Select the correct
setting based on the probe installation. When the wiper stops, it must be in the top
position.
Figure 7 Wiper in position B
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Option Description
Sludge mode Sets the number of measurements done for each concentration calculation.
•On
•Off if a flow through unit is used
•Auto (default) sets the number of measurements automatically based on the sludge
condition
Note: Enable the sludge mode to increase the number of concentration measurements
when the probe measures in activated sludge. When the sludge mode is active, several
measurements are done to adjust for different sludge compositions.
Bypass Sets Bypass to No (default) or Yes. Select Yes when the probe is installed in a flow
through unit.
Note: When Bypass is set to Yes, the wiper out position is disabled. Remove the probe
from the flow through unit before a wiper replacement or test.
Output mode Sets the output mode during calibration or maintenance tasks:
•Hold—Keeps the last measured reading when the controller goes to the calibration or
maintenance menu.
•Active—Transmits the current reading. The controller corrects the reading with the
last saved calibration data.
•Set transfer—Transmits the transfer value entered in the system setup.
•Selection (default)—The controller asks for a value each time it goes into calibration
or maintenance menu.
Service reminder Sets the time interval for service reminders. Options: off, 3, 6, 12 (default) or 24 months.
Reminder interval Sets the time interval for maintenance reminders. Options: 1 day, 3 days, 1 week
(default), 2, 3 or 4 weeks.
Reset
configuration to
defaults
Sets the configuration settings back to the factory defaults.
5.3 Calibration
5.3.1 Offset, factor and standard calibration
Use the offset and/or factor calibration option when the process water contains solids (e.g., activated
sludge). Use the standard calibration option for clean samples.
1. Go to the device menu as follows:
• SC200 and SC1000 Controllers—Go to the main menu, then select Sensor setup. If
applicable, select the sensor.
• SC4500 Controller and Claros interface—Select the tile of the device, then select Device
menu.
2. Select Calibration. If applicable, select the parameter.
3. Select an option.
Option Description
Offset Enters an offset value to adjust the standard calibration.
Options: –10% to +10% of the measuring range (default: 0). The measuring range is based
on the device type as specified by the measuring range in Specifications on page 3.
Note: Use Offset to adjust the measurement values of the probe compared to laboratory
values when there are constant deviations of the measurement. The adjustment of Offset
lowers or raises the calibration curve of the probe.
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Option Description
Factor Enters a slope factor to adjust the standard calibration.
Options: from 0.8 to 1.2 (default: 1)
Note: Use grab samples with known values or standard solutions to determine the slope
factor.
Standard
calibration
Start calibration—Starts a one-point calibration.
Standard value—Selects the value for the calibration standard.
Note: The Standard calibration option is not available if matrix calibration is active.
Calibration
interval
Sets the calibration interval. Options: off (default), 1 week, 4 weeks, 3 months or 6 months.
Note: Not available if matrix calibration is active.
5.3.2 Matrix calibration
The matrix calibration is only available for the NT3200sc probe and can have one, two or three
calibration points. The matrix calibration adapts the calculation for nitrate and nitrite to the conditions
in the medium. A matrix calibration is based on a laboratory comparison measurement. Start the
matrix calibration after the probe is in the medium and has adapted to the environment. Wait a
minimum of 15 minutes with the default configuration settings to let the probe adjust to the
temperature, complete some wiping cycles to clean the measurement gap and remove air bubbles.
The matrix calibration is necessary to adjust the measurements to the background environment. If a
single calibration point is used, it is recommended to select the calibration point at the lower limit of
the operating range of the application. For two calibration points, select the calibration points at the
lower and upper limit of the operating range. If a third calibration point is used, set the third
calibration point in the middle of the operating range.
The limit of the operating range depends on the application:
• If the nitrate concentration changes and nitrite is almost constant, set the limit to the lowest and
highest NO3 concentration.
• If the nitrite concentration changes and nitrate is almost constant, set the limit to the lowest and
highest NO2 concentration.
• If the nitrate and nitrite concentrations change, set the limit to the lowest and highest NO3
concentration.
If one more calibration point is added, the probe knows automatically which of the three calibration
points needs to be rewritten.
Each calibration point is shown in Matrix calibration > Information and can be deleted manually.
If one of the events that follows occurs, delete all of the existing calibration points and record new
calibration points:
• The probe is moved to a different environment
• The matrix changes significantly
• The matrix changes seasonal
• The process changes
• Comparison measurements with laboratory values are not matching
• An error message shows that a matrix calibration is necessary
Note: Doing or erasing a matrix calibration does not have an effect on the factory calibration.
Make sure that the steps are followed for each calibration procedure:
• The probe is in the medium and has adapted to the environment.
• Collect the grab sample, then immediately validate on the controller that the grab sample was
collected.
• Collect the sample as near as possible to the sensor.
• Start the matrix calibration only when the concentrations are stable.
• To measure the grab sample, refer to Instructions for laboratory measurements on page 26.
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1. Go to the main menu, then select Calibration > Matrix calibration > Start matrix calibration.
Note: There can be one, two or three open matrix calibration points. One of the three open calibration points
must be deleted before a new calibration point can be added.
2. Immediately follow the instructions on the controller to collect a grab sample. Accept the message
immediately after the grab sample is collected. Write the shown Point ID to the sample. Prepare
the grab sample (e.g., filtration) as soon as possible for laboratory measurement.
Note: The measurement data is initially saved on the controller for the probe, then adjusted when the
laboratory values are determined and entered.
3. Measure the grab sample in the laboratory with the two parameters: NO3–N and NO2–N or NO3
and NO2.
4. Select Calibration > Matrix calibration > Edit open calibration points.
Note: The Edit open calibration points option only shows when the Matrix calibration is started.
Note: Make sure that the chemical formulas of the sensor and laboratory measurements are the same (e.g.,
NO3–N and NO2–N or NO3 and NO2).
The first open calibration point is shown.
5. If several grab samples are collected without the laboratory values entered in between, use the
Point ID to make sure that the assignment is correct.
a. To enter an open calibration point, confirm the open point and then select Enter lab values if
the point ID matches the comparison measurement.
b. To delete an open calibration point, confirm the open point and then select Delete this point.
6. Select Next to move to the next point. Select Back to complete the matrix calibration.
7. Select Calibration > Matrix calibration > Information.
Data about the actual matrix calibration shows.
8. Select Calibration > Matrix calibration > Calibration interval to set a reminder for the Matrix
calibration.
Note: The calibration interval refers to the last completed matrix calibration.
If necessary, go back to the factory calibration. Select Calibration > Matrix calibration > Reset to
default.
5.4 Correction via Link2sc
The Link2sc procedure offers a secure method of data exchange between process probes and
Link2sc-compatible photometers using an SD memory card or via a local area network (LAN).
During a pure control measurement, the measurement data is transferred from the probe to the
photometer where it is then archived together with the photometric reference data that has been
recorded.
Refer to the Link2sc user manual for a detailed description of the Link2sc procedure.
5.5 Data logging
The SC Controller provides one data log and one event log for each instrument. The data log stores
the measurement data at selected intervals. The event log stores different types of events that occur
on the devices (i.e., configuration changes, alarms and warning conditions).
The data log and the event log can be saved. Refer to the SC Controller user manual for instructions.
Section 6 Maintenance
CAUTION
Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the
document.
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N O T I C E
Do not disassemble the instrument for maintenance. If the internal components must be cleaned or repaired,
contact the manufacturer.
6.1 Maintenance schedule
Table 3 shows the recommended schedule of maintenance tasks. Facility requirements and
operating conditions may increase the frequency of some tasks. Table 4 shows the average service
life of wearing parts for standard operating conditions and default (factory) settings.
Table 3 Maintenance schedule
Task 1 week 3 months 6 months 1 year As necessary
Visual inspection X
Clean the measuring path on page 18 X
Validate the probe calibration on page 21 X10
Replace the wiper blade on page 19 X10,11
Manufacturer service inspection X 12
Table 4 Wearing parts consumption
Wearing part Quantity Average service life
Wiper blades (set of 5 pieces) 1 > 1 year10,11
Wiper motor 1 7 years11
Wiper shaft with seals 1 2 years11
Housing seals13 1 2 years
Flashlamp 1 10 years
Measuring window 2 5 years10
Filter set 1 5 years
6.2 Clean the measuring path
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.
10 Based on non-abrasive water conditions
11 Based on the default settings
12 A minimum of one inspection per year is required. For the best performance and uptime, the
manufacturer recommends 2 inspections per year.
13 Replace each time the probe is opened.
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Normal operation of this device may require the use of chemicals or samples that are biologically
unsafe.
• Observe all cautionary information printed on the original solution containers and safety data
sheets prior to their use.
• Dispose of all consumed solutions in accordance with the local and national regulations and laws.
• Select the type of protective equipment suitable to the concentration and quantity of the dangerous
material being used.
If the wiper interval is correctly set for the application and the wiper profile is replaced regularly, more
cleaning of the measuring path is not necessary.
1. Go to the main menu, then select Sensor setup.
2. Select the applicable sensor, if necessary.
3. Select Maintenance.
4. Set the outputs on Hold.
5. Remove the probe from the tank or flow through unit.
6. Go back to the sensor menu, then select Diagnostics/Test > Signals.
7. Rinse the probe with clean water.
As an alternative, use a window cleaner, grease remover or 5 % hydrochloric acid to clean the
measuring path based on the quantity and type of contamination. Soak the probe in the cleaning
solution for 5 to 10 minutes.
8. Carefully clean the measuring path with distilled water.
Clean the measuring path until the DExt1 and DExt2 values are less than 15.
9. Select Back to go back to Diagnostics/Test.
10. Select Back again.
11. Select Return sensor to process.
The probe goes back to measurement mode after the automatic wipe cleaning.
12. Install the probe in the tank or flow through unit.
6.3 Replace the wiper blade
Replace the wiper blade when one or more of the conditions that follow occurs:
• After 25,000 cleaning cycles (A-B-A or B-A-B)
• After 50,000 cleaning single movements (A-B or B-A)
• if the wiper blade has damage or does not operate correctly.
1. Remove the probe from the tank or flow through unit.
2. Go to the maintenance menu as follows:
• SC200 and SC1000 Controllers—Go to the main menu, then select Sensor setup >
Maintenance.
• SC4500 Controller and Claros interface—Push the tile of the device and select Device menu >
Maintenance.
3. Select Wiper replacement.
4. Complete the instructions on the display. When asked, replace the wiper blade. Refer to the
illustrated steps in Figure 8 and Figure 9.
English 19

Figure 8 Replace wiper blade—1 mm and 2 mm
Figure 9 Replace wiper blade—5 mm
20 English