Hach NT3100sc Manuale utente
DOC023.97.90749
NT3100sc, NT3200sc
06/2023, Edition 4
User Manual
Manuel d'utilisation
Manual del usuario
Manual do Usuário
用户手册
取扱説明書
사용 설명서
Table of Contents
English..............................................................................................................................3
Français......................................................................................................................... 27
Español.......................................................................................................................... 52
Português...................................................................................................................... 78
中文............................................................................................................................... 102
日本語........................................................................................................................... 124
한국어........................................................................................................................... 147
.................................................................................................................................. 169
2
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.
English 3
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.
4 English
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.
English 5
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.
English 7
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.
8 English
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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