1、 Summary
Total As、Total Cd、Total Cr、Total Cu、Total Fe、Total Hg、Total Mn、Total Ni 、Total Pb、Total Zn It is a series of fully automatic online water heavy metal analyzers, suitable for industrial pollution sources such as metal mining and selection, metal smelting, metal products, lead-acid batteries, electroplating, printed circuit boards, printing and dyeing, leather manufacturing, etc., including wastewater discharge, tap water source water, surface water, etc.

2、 Main features
1. Stable and reliable
In order to meet the needs of industry and the environment online, its high stability in chemistry, optics, electricity, fluid mechanics, and other aspects has been determined. The electrical part, water sample pipeline, and chemical reaction unit are completely isolated, and the simple and stable loop analysis technology ensures that the instrument can operate stably for a long time.
2. Easy to install
The analyzer has successfully passed a series of tests to facilitate installation and setup. During installation, simply connect the reagent, sample, waste liquid pipeline, and power cord, set the parameters, and start
3. Correction method
Automatic timed calibration or manual calibration, the calibration standard solution can be configured and set according to the principle of proximity to the actual metal content range of the user's water sample
4. Fully automatic operation
No need for personnel on duty, it can achieve intelligent functions such as automatic zeroing, automatic calibration, automatic measurement, automatic cleaning, automatic maintenance, self-protection, and automatic recovery
5. Diversified online monitoring methods
It can achieve measurement methods such as manual real-time measurement, automatic timed measurement, and automatic periodic measurement
6. Complies with relevant Chinese national industry standards
7. By using optical quantitative technology, the repeatability of the measurement is greatly improved, ensuring high accuracy of the measurement

3、 Product advantages
1. Micro injection technology ensures low consumption of reagents
2. The electrical part is completely isolated from the water sample and chemical reaction part
3. Color touch screen display output
4. Data storage capacity: one year of valid data
5. Self leakage monitoring, instrument status self diagnosis
6. Automatic restart function after power failure
7. Standard 4-20mA analog output
8. Self diagnostic function, identifying whether there is a lack of water samples
9. Standard 4-20mA analog output, RS232 and corresponding software can be selected for local or remote PC control

4、 System Overview and Features
（1） Total arsenic
① System Overview
The total arsenic online monitoring instrument is a new generation of fully automatic water total arsenic online analyzer that technically complies with Chinese national standard methods. This product is another maintenance free online monitoring instrument launched based on years of research on water quality analysis products. The pre treated water sample is injected into a special reactor by an injection pump and first reacts with a reducing agent to uniformly reduce all forms of arsenic in the water sample to trivalent arsenic. Then, a color developing agent is added to measure the background absorbance of the solution, followed by the addition of an oxidizing agent to oxidize all trivalent arsenic to pentavalent arsenic. Finally, a color developing agent is added for the color developing reaction. The total arsenic content in the water sample can be calculated based on the changes in absorbance values before and after the two times.

② System features
1. The first optical method was used to determine the total arsenic content in water, which meets both national standards and environmental industry standards.
2. The water sample pretreatment device adopts a maintenance free design, which can ensure that the maintenance cycle of the pretreatment device exceeds six months.
3. The measurement process and results meet the national standard GB7485-87.
4. Micro injection technology ensures low consumption of reagents.
5. The fully imported components and innovative analysis flow path design and reagent formula ensure extremely high measurement reproducibility, with a current measurement reproducibility of up to 3%.
6. Fully automatic operation, no need for personnel on duty, can achieve intelligent functions such as automatic zeroing, automatic calibration, automatic measurement, automatic cleaning, automatic maintenance, self-protection, and automatic recovery.
7. The online monitoring methods are diverse and can achieve measurement methods such as manual real-time measurement, automatic timed measurement, and automatic periodic measurement.

③ Technical Index
Test method: Optical: Electrochromatographic method
Test range: (0—0.5/1/2/5)mg/L
Detection limit: 0.005mg/L
Accuracy:<10% reading
Reproducibility:<3% of readings
Response time (>90%): approximately 20 minutes
Testing methods: timed, equidistant, manual
Calibration method: automatic timed calibration or manual calibration
Reagent consumption: see operating manual for details
Secondary pollution: All chemical reagents used are recycled and there is no direct discharge to the outside world
Maintenance method: Self maintenance, user maintenance interval>1 month
MTBF (Time Between Failures): ≥ 720 hours per session
Self monitoring: self leakage monitoring, instrument status self diagnosis
Analog output: 4-20mA analog output
Relay control: 2-channel 24V 1A relay high and low point control
Data transmission method: RS232，RS485，GPRS
Display: Color touch screen display output
Data storage: one year of valid data
Working temperature: 5 ℃~+50 ℃
Power supply: 220V AC ± 10%/50-60HZ
Power consumption: approximately 100 W
Size: 1600mm × 500mm × 400mm
Weight: Approximately 80Kg

（2） Total cadmium
① System Overview
The total cadmium online monitor is a new generation of fully automatic water total cadmium online analyzer that complies with the Chinese national standard method GB7471-87. This product is a maintenance free online monitor launched based on years of research on water quality analysis products. The pre treated water sample is injected into the UV digestion reactor by an injection pump and first reacts with acidic oxides to oxidize all forms of cadmium in the water sample into divalent cadmium. Then, the pH value of the solution is adjusted to reach strong alkalinity. Finally, a color developer is added for extraction and color reaction. Within the measurement range, the degree of color change is proportional to the total cadmium concentration in the water sample. By measuring the color change, the total cadmium content in the water sample can be calculated.

② System features
1. The proprietary UV digestion technology greatly shortens the determination time of total cadmium, and the single measurement time is time-consuming
Not exceeding 15 minutes.
2. The water sample pretreatment device adopts a maintenance free design, which can ensure that the maintenance cycle of the pretreatment device exceeds six months.
3. The measurement process and results meet the national standard GB7471-87.
4. Micro injection technology ensures low consumption of reagents.
5. The fully imported components and innovative analysis flow path design and reagent formula ensure extremely high measurement reproducibility, with a current measurement reproducibility of up to 3%.
6. Fully automatic operation, no need for personnel on duty, can achieve intelligent functions such as automatic zeroing, automatic calibration, automatic measurement, automatic cleaning, automatic maintenance, self-protection, and automatic recovery.
7. The online monitoring methods are diverse and can achieve measurement methods such as manual real-time measurement, automatic timed measurement, and automatic periodic measurement.

③ Technical parameters
Test method: photoelectric colorimetric method
Test range: (0—0.1/0.5/1/2/5)mg/L
Detection limit: 0.005mg/L
Accuracy:<10% reading
Reproducibility:<3% of readings
Response time (>90%): approximately 20 minutes
Testing methods: timed, equidistant, manual
Calibration method: automatic timed calibration or manual calibration
Reagent consumption: see operating manual for details
Secondary pollution: All chemical reagents used are recycled and there is no direct discharge to the outside world.
Maintenance method: Self maintenance, user maintenance interval>1 month
MTBF (Time Between Failures): ≥ 720 hours per session
Self monitoring: self leakage monitoring, instrument status self diagnosis
Analog output: 4-20mA analog output
Relay control: 2-channel 24V 1A relay high and low point control
Data transmission method: RS232，RS485，GPRS
Display: Color touch screen display output
Data storage: one year of valid data
Working temperature: 5 ℃~+50 ℃
Power supply: 220V AC ± 10%/50-60HZ
Power consumption: approximately 100 W
Size: 1600mm × 500mm × 400mm
Weight: Approximately 80Kg

（3） Total Cr
① System Overview
The total chromium online monitoring instrument is a new generation of fully automatic water total chromium online analyzer that technically complies with the Chinese national standard method GB7466-87. This product is a maintenance free online monitoring instrument launched based on years of research on water quality analysis products. After pre-treatment, the water sample is injected into the UV digestion reactor by an injection pump and first reacts with a strong oxidizing reagent to uniformly oxidize all forms of chromium in the water sample to hexavalent chromium. Then, a reducing agent is added to complete the excess oxidant reaction. Finally, a characteristic color developer is added for color reaction. Within the measurement range, the degree of color change is proportional to the total chromium concentration in the water sample. By measuring the color change, the total chromium content in the water sample can be calculated.

② System features
1. UV digestion technology greatly shortens the determination time of total chromium, with a single measurement taking no more than 15 minutes.
2. The water sample pretreatment device adopts a maintenance free design, which can ensure that the maintenance cycle of the pretreatment device exceeds six months.
3. The measurement process and results meet the national standard GB7466-87.
4. Micro injection technology ensures low consumption of reagents.
5. The fully imported components and innovative analysis flow path design and reagent formula ensure extremely high measurement reproducibility, with a current measurement reproducibility of up to 3%.
6. Fully automatic operation, no need for personnel on duty, can achieve intelligent functions such as automatic zeroing, automatic calibration, automatic measurement, automatic cleaning, automatic maintenance, self-protection, and automatic recovery.
7. The online monitoring methods are diverse and can achieve measurement methods such as manual real-time measurement, automatic timed measurement, and automatic periodic measurement.

③ Technical parameters
Test method: photoelectric colorimetric method
Test range: (0--0.5/1/2/5)mg/L
Detection limit: 0.005mg/L
Accuracy:<10% reading
Reproducibility:<3% of readings
Response time (>90%): approximately 20 minutes
Testing methods: timed, equidistant, manual
Calibration method: automatic timed calibration or manual calibration
Reagent consumption: see operating manual for details
Secondary pollution: All chemical reagents used are recycled and there is no direct discharge to the outside world.
Maintenance method: Self maintenance, user maintenance interval>1 month
MTBF (Time Between Failures): ≥ 720 hours per session
Self monitoring: self leakage monitoring, instrument status self diagnosis
Analog output: 4-20mA analog output
Relay control: 2-channel 24V 1A relay high and low point control
Data transmission method: RS232，RS485，GPRS
Display: Color touch screen display output
Data storage: one year of valid data
Working temperature: 5 ℃~+50 ℃
Power supply: approximately 100 W
Size: 1600mm × 500mm × 400mm
Weight: Approximately 80Kg

（4） Total Copper
① System Overview
The total copper online monitoring instrument is a new generation of fully automatic water total copper online analyzer that complies with the Chinese national standard method GB7474-87. This product is a maintenance free online monitoring instrument launched based on years of research on water quality analysis products. After pre-treatment, the water sample is injected into a UV digester by an injection pump and first reacts with a strong acidic reagent to uniformly oxidize all forms of copper in the water sample into divalent copper ions. Then, a reducing reagent is added to reduce the divalent copper ions, followed by the addition of a masking agent to eliminate the interference of coexisting ions in the water sample. Finally, a characteristic color developer is added for color reaction. Within the measurement range, the degree of color change is proportional to the total copper concentration in the water sample. By measuring the degree of color change, the total copper content in the water sample can be calculated.

② System features
1. The proprietary UV digestion technology greatly shortens the determination time of total copper, with a single measurement taking no more than 15 minutes.
2. The water sample pretreatment device adopts a maintenance free design, which can ensure that the maintenance cycle of the pretreatment device exceeds six months.
3. The measurement process and results meet the national standard GB7474-87.
4. The fully imported components and innovative analysis flow path design and reagent formula ensure extremely high measurement reproducibility, with a current measurement reproducibility of up to 3%.
5. Fully automatic operation, no need for personnel on duty, can achieve intelligent functions such as automatic zeroing, automatic calibration, automatic measurement, automatic cleaning, automatic maintenance, self-protection, and automatic recovery.
6. The online monitoring methods are diverse and can achieve measurement methods such as manual real-time measurement, automatic timed measurement, and automatic periodic measurement.

③ Technical parameters
Test method: photoelectric colorimetric method
Test range: (0-1/5/10)mg/L
Detection limit: 0.01mg/L
Accuracy:<10% reading
Reproducibility:<3% of readings
Response time (>90%): approximately 10 minutes
UV digestion: Using unique UV digestion technology, it can greatly shorten the measurement time and greatly reduce the time consumption of a single measurement.
Digestion time: 5-60 minutes, can be set arbitrarily, and the instrument will automatically determine the time required for sample digestion, thus achieving a balance between shortening measurement time and improving measurement accuracy.
Testing methods: timed, equidistant, manual
Calibration method: automatic timed calibration or manual calibration
Reagent consumption: see operating manual for details
Secondary pollution: All chemical reagents used are recycled and there is no direct discharge to the outside world.
Maintenance method: Self maintenance, user maintenance interval>1 month
MTBF (Time Between Failures): ≥ 720 hours per session
Self monitoring: self leakage monitoring, instrument status self diagnosis
Analog output: 4-20mA analog output
Relay control: 2-channel 24V 1A relay high and low point control
Data transmission method: RS232，RS485，GPRS
Display: Color touch screen display output
Data storage: one year of valid data
Working temperature: 5 ℃~+50 ℃
Power supply: 220V AC ± 10%/50-60HZ
Power consumption: approximately 100 W
Size: 1600mm × 500mm × 400mm
Weight: Approximately 80Kg

（5） Total iron
① System Overview
The total iron online monitoring instrument is a new generation of fully automatic water total iron online analyzer that complies with the Chinese environmental protection industry standard HJ/T345-2007. This product is a maintenance free online monitoring instrument launched based on years of research on water quality analysis products. The pre treated water sample is injected into the UV digestion reactor by an injection pump and first reacts with a strong acidic reagent to dissolve all forms of iron in the water sample. Then, the pH value of the solution is adjusted, and a reducing agent is added to reduce the iron to divalent. Finally, a characteristic color developer is added for color reaction. Within the measurement range, the degree of color change is proportional to the total iron concentration in the water sample. By measuring the degree of color change, the total iron content in the water sample can be calculated.

② System features
1. The proprietary UV digestion technology greatly shortens the determination time of total iron, with a single measurement taking about 10 minutes.
2. The water sample pretreatment device adopts a maintenance free design, which can ensure that the maintenance cycle of the pretreatment device exceeds six months.
3. The measurement process and results meet the environmental standard HJ/T345-2007.
4. Micro injection technology ensures low consumption of reagents.
5. The fully imported components and innovative analysis flow path design and reagent formula ensure extremely high measurement reproducibility, with a current measurement reproducibility of up to 3%.
6. Fully automatic operation, no need for personnel on duty, can achieve intelligent functions such as automatic zeroing, automatic calibration, automatic measurement, automatic cleaning, automatic maintenance, self-protection, and automatic recovery.
7. The online monitoring methods are diverse and can achieve measurement methods such as manual real-time measurement, automatic timed measurement, and automatic periodic measurement.

③ Technical parameters
Test method: photoelectric colorimetric method
Test range: (0-1/5/10/100/100) mg/L Detection lower limit: 0.05 mg/L
Accuracy:<10% reading
Reproducibility:<3% of readings
Response time (>90%): approximately 20 minutes
Testing methods: timed, equidistant, manual
Calibration method: automatic timed calibration or manual calibration
Reagent consumption: Please refer to the operation manual for details. Secondary pollution: All chemical reagents used are recycled and there is no direct discharge to the outside world.
Maintenance method: Self maintenance, user maintenance interval>1 month
MTBF (Time Between Failures): ≥ 720 hours per session
Self monitoring: self leakage monitoring, instrument status self diagnosis
Analog output: 4-20mA analog output
Relay control: 2-channel 24V 1A relay high and low point control
Data transmission method: RS232，RS485，GPRS
Display: Color touch screen display output
Data storage: one year of valid data
Working temperature: 5 ℃~+50 ℃
Power supply: 220V AC ± 10%/50-60HZ
Power consumption: approximately 100 W
Size: 1600mm × 500mm × 400mm
Weight: Approximately 80Kg

（6） Total Mercury As
① System Overview
The total mercury online monitor is a new generation of fully automatic water total mercury online analyzer that complies with the Chinese national standard method GB7469-87. This product is a maintenance free online monitor launched based on years of research on water quality analysis products. After the pretreated water sample is injected into a special reactor by the injection pump, it first reacts with the oxidizing agent, uniformly oxidizes all forms of mercury in the water sample into divalent mercury ions, then reduces the excess oxidant, then adjusts the PH value of the solution, finally adds the characteristic color developer to carry out the extraction color reaction. Within the measurement range, the degree of color change is proportional to the total mercury concentration in the water sample. By measuring the degree of color change, the total mercury content in the water sample can be calculated.

② System features
1. The proprietary reactor can achieve online extraction function, and one instrument can be used for both total mercury determination and mercury ion determination.
2. The water sample pretreatment device adopts a maintenance free design, which can ensure that the maintenance cycle of the pretreatment device exceeds six months.
3. The measurement process and results meet the national standard GB7469-87.
4. Micro injection technology ensures low consumption of reagents.
5. The fully imported components and innovative analysis flow path design and reagent formula ensure extremely high measurement reproducibility, with a current measurement reproducibility of up to 3%.
6. Fully automatic operation, no need for personnel on duty, can achieve intelligent functions such as automatic zeroing, automatic calibration, automatic measurement, automatic cleaning, automatic maintenance, self-protection, and automatic recovery.
7. The online monitoring methods are diverse and can achieve measurement methods such as manual real-time measurement, automatic timed measurement, and automatic periodic measurement.

③ Technical parameters
Test method: photoelectric colorimetric method
Test range: (0-0.5/1/2/5)mg/L
Detection limit: 0.005mg/L
Accuracy:<10% reading
Reproducibility:<3% of readings
Response time (>90%): approximately 20 minutes
Testing methods: timed, equidistant, manual
Calibration method: automatic timed calibration or manual calibration
Reagent consumption: see operating manual for details
Secondary pollution: All chemical reagents used are recycled and there is no direct discharge to the outside world.
Maintenance method: Self maintenance, user maintenance interval>1 month
MTBF (Time Between Failures): ≥ 720 hours per session
Self monitoring: self leakage monitoring, instrument status self diagnosis
Analog output: 4-20mA analog output
Relay control: 2-channel 24V 1A relay high and low point control
Data transmission method: RS232，RS485，GPRS
Display: Color touch screen display output
Data storage: one year of valid data
Working temperature: 5 ℃~+50 ℃
Power supply: 220V AC ± 10%/50-60HZ
Power consumption: approximately 100 W
Size: 1600mm × 500mm × 400mm
Weight: Approximately 80Kg

（7） Total Manganese
① System Overview
The total manganese online monitor is a new generation of fully automatic water total manganese online analyzer that complies with the Chinese environmental protection industry standard HJ/T344-2007. This product is a maintenance free online monitor launched based on years of research on water quality analysis products. The pre treated water sample is injected into a special reactor by an injection pump and first reacts with a reducing reagent to uniformly reduce all forms of manganese in the water sample to divalent manganese ions. Then, the pH value of the solution is adjusted, and finally a characteristic color developer is added for color reaction. Within the measurement range, the degree of color change is proportional to the total manganese concentration in the water sample. By measuring the degree of color change, the total manganese content in the water sample can be calculated.

② System features
1. The use of optical quantitative technology greatly improves the repeatability of measurement, thereby ensuring high accuracy of the measurement.
2. The water sample pretreatment device adopts a maintenance free design, which can ensure that the maintenance cycle of the pretreatment device exceeds six months.
3. The measurement process and results meet the environmental standard HJ/T344-2007.
4. Micro injection technology ensures low consumption of reagents.
5. The fully imported components and innovative analysis flow path design and reagent formula ensure extremely high measurement reproducibility, with a current measurement reproducibility of up to 3%.
6. Fully automatic operation, no need for personnel on duty, can achieve intelligent functions such as automatic zeroing, automatic calibration, automatic measurement, automatic cleaning, automatic maintenance, self-protection, and automatic recovery.
7. The online monitoring methods are diverse and can achieve measurement methods such as manual real-time measurement, automatic timed measurement, and automatic periodic measurement.

③ Technical parameters
Test method: photoelectric colorimetric method
Test range: (0-1/510/20)mg/L
Detection limit: 0.01mg/L
Accuracy:<10% reading
Reproducibility:<3% of readings
Response time (>90%): approximately 10 minutes
Testing methods: timed, equidistant, manual
Calibration method: automatic timed calibration or manual calibration
Reagent consumption: see operating manual for details
Secondary pollution: All chemical reagents used are recycled and there is no direct discharge to the outside world.
Maintenance method: Self maintenance, user maintenance interval>1 month
MTBF (Time Between Failures): ≥ 720 hours per session
Self monitoring: self leakage monitoring, instrument status self diagnosis
Analog output: 4-20mA analog output
Relay control: 2-channel 24V 1A relay high and low point control
Data transmission method: RS232，RS485，GPRS
Display: Color touch screen display output
Data storage: one year of valid data
Working temperature: 5 ℃~+50 ℃
Power supply: 220V AC ± 10%/50-60HZ
Power consumption: approximately 100 W
Size: 1600mm × 500mm × 400mm
Weight: Approximately 80Kg

（8） Total nickel
① System Overview
The total nickel online monitoring instrument is a new generation of fully automatic water total nickel online analyzer that complies with the Chinese national standard method GB11910-89. This product is a maintenance free online monitoring instrument launched based on years of research on water quality analysis products. The pre treated water sample is injected into a special reactor by an injection pump and first reacts with a strong acidic reagent. After neutralizing excess acid, a masking agent is added to eliminate the interference of coexisting ions. Then, an oxidant is added to uniformly oxidize all forms of nickel in the water sample to trivalent nickel. Finally, a characteristic color developer is added for color reaction. Within the measurement range, the degree of color change is proportional to the total nickel concentration in the water sample. By measuring the color change, the total nickel content in the water sample can be calculated.

② System features
1. The non-contact injection pump technology ensures that strong acidic oxidants do not corrode the power core of the instrument - the injection pump.
2. The water sample pretreatment device adopts a maintenance free design, which can ensure that the maintenance cycle of the pretreatment device exceeds six months.
3. The measurement process and results meet the national standard GB119110-89.
4. Micro injection technology ensures low consumption of reagents.
5. The fully imported components and innovative analysis flow path design and reagent formula ensure extremely high measurement reproducibility, with a current measurement reproducibility of up to 3%.
6. Fully automatic operation, no need for personnel on duty, can achieve intelligent functions such as automatic zeroing, automatic calibration, automatic measurement, automatic cleaning, automatic maintenance, self-protection, and automatic recovery.
7. The online monitoring methods are diverse and can achieve measurement methods such as manual real-time measurement, automatic timed measurement, and automatic periodic measurement.

③ Technical parameters
Test method: photoelectric colorimetric method
Test range: (0-1/510/20)mg/L
Detection limit: 0.25mg/L
Accuracy:<10% reading
Reproducibility:<3% of readings
Response time (>90%): approximately 20 minutes
Testing methods: timed, equidistant, manual
Calibration method: automatic timed calibration or manual calibration
Reagent consumption: see operating manual for details
Secondary pollution: All chemical reagents used are recycled and there is no direct discharge to the outside world.
Maintenance method: Self maintenance, user maintenance interval>1 month
MTBF (Time Between Failures): ≥ 720 hours per session
Self monitoring: self leakage monitoring, instrument status self diagnosis
Analog output: 4-20mA analog output
Relay control: 2-channel 24V 1A relay high and low point control
Data transmission method: RS232，RS485，GPRS
Display: Color touch screen display output
Data storage: one year of valid data
Working temperature: 5 ℃~+50 ℃
Power supply: 220V AC ± 10%/50-60HZ
Power consumption: approximately 100 W
Size: 1600mm × 500mm × 400mm
Weight: Approximately 80Kg

（9） Total Pb
① System Overview
The total lead online monitoring instrument is a new generation of fully automatic total lead online analyzer based on electrode method. This product is a maintenance free online monitoring instrument launched on the basis of years of research on water quality analysis products. The preprocessed water sample is injected into a special reactor by an injection pump and first reacts with acidic oxidizing reagents to oxidize all forms of lead in the water sample into divalent lead. After adjusting the pH value of the solution, masking agents and ion strength regulators are added. Finally, the electrical signal of the electrode is read. Within the measurement range, the intensity of the electrode signal is proportional to the concentration of total lead in the water sample. By measuring this signal, the content of total lead in the water sample can be calculated.

② System features
1. The electrode method avoids the use of highly toxic substance potassium cyanide in measurement, and one instrument can be used for the determination of total lead or lead ions.
2. The water sample pretreatment device adopts a maintenance free design, which can ensure that the maintenance cycle of the pretreatment device exceeds six months.
3. The extremely wide detection range ensures that it can be used for monitoring lead in any water sample.
4. Micro injection technology ensures low consumption of reagents.
5. The fully imported components and innovative analysis flow path design and reagent formula ensure extremely high measurement reproducibility, with a current measurement reproducibility of up to 3%.
6. Fully automatic operation, no need for personnel on duty, can achieve intelligent functions such as automatic zeroing, automatic calibration, automatic measurement, automatic cleaning, automatic maintenance, self-protection, and automatic recovery.
7. The online monitoring methods are diverse and can achieve measurement methods such as manual real-time measurement, automatic timed measurement, and automatic periodic measurement.

③ Technical parameters
Test method: photoelectric colorimetric method
Test range: (0-1/5/10/100/1000)mg/L
Detection limit: 0.005mg/L
Accuracy:<10% reading
Reproducibility:<3% of readings
Response time (>90%): approximately 20 minutes
Testing methods: timed, equidistant, manual
Calibration method: automatic timed calibration or manual calibration
Reagent consumption: see operating manual for details
Secondary pollution: All chemical reagents used are recycled and there is no direct discharge to the outside world.
Maintenance method: Self maintenance, user maintenance interval>1 month
MTBF (Time Between Failures): ≥ 720 hours per session
Self monitoring: self leakage monitoring, instrument status self diagnosis
Analog output: 4-20mA analog output
Relay control: 2-channel 24V 1A relay high and low point control
Data transmission method: RS232，RS485，GPRS
Display: Color touch screen display output
Data storage: one year of valid data
Working temperature: 5 ℃~+50 ℃
Power supply: 220V AC ± 10%/50-60HZ
Power consumption: approximately 100 W
Size: 1600mm × 500mm × 400mm
Weight: Approximately 80Kg

（10） Total Zinc
① System Overview
The total zinc online monitor is a new generation of fully automatic water total zinc online analyzer that complies with the Chinese national standard method GB7472-87. This product is a maintenance free online monitor launched based on years of research on water quality analysis products. After pre-treatment, the water sample is injected into a special reactor by an injection pump and first reacts with an acidic oxidant to uniformly oxidize all forms of zinc in the water sample into divalent zinc ions. Then, the pH value of the solution is adjusted, and finally a characteristic color developer is added for color reaction. Within the measurement range, the degree of color change is proportional to the total zinc concentration in the water sample. By measuring the degree of color change, the total zinc content in the water sample can be calculated.

② System features
1. The use of optical quantitative technology greatly improves the repeatability of measurement, thereby ensuring high accuracy of the measurement.
2. The water sample pretreatment device adopts a maintenance free design, which can ensure that the maintenance cycle of the pretreatment device exceeds six months.
3. The measurement process and results meet the national standard GB7472-87.
4. Micro injection technology ensures low consumption of reagents.
5. The fully imported components and innovative analysis flow path design and reagent formula ensure extremely high measurement reproducibility, with a current measurement reproducibility of up to 3%.
6. Fully automatic operation, no need for personnel on duty, can achieve intelligent functions such as automatic zeroing, automatic calibration, automatic measurement, automatic cleaning, automatic maintenance, self-protection, and automatic recovery.
7. The online monitoring methods are diverse and can achieve measurement methods such as manual real-time measurement, automatic timed measurement, and automatic periodic measurement.

③ Technical parameters
Test method: photoelectric colorimetric method
Test range: (0-1/5/10/100/1000)mg/L
Detection limit: 0.005mg/L
Accuracy:<10% reading
Reproducibility:<3% of readings
Response time (>90%): approximately 10 minutes
Testing methods: timed, equidistant, manual
Calibration method: automatic timed calibration or manual calibration
Reagent consumption: see operating manual for details
Secondary pollution: All chemical reagents used are recycled and there is no direct discharge to the outside world.
UV digestion: Customizable unique UV digestion technology can greatly shorten measurement time
Dissolving time: 5-30 minutes, can be set arbitrarily, and the instrument will automatically determine the time required for sample digestion, thus achieving a balance between shortening measurement time and improving measurement accuracy.
Maintenance method: Self maintenance, user maintenance interval>1 month
MTBF (Time Between Failures): ≥ 720 hours per session
Self monitoring: self leakage monitoring, instrument status self diagnosis
Analog output: 4-20mA analog output
Relay control: 2-channel 24V 1A relay high and low point control
Data transmission method: RS232，S485，GPRS
Display: Color touch screen display output
Data storage: one year of valid data
Working temperature: 5 ℃~+50 ℃
Power supply: 220V AC ± 10%/50-60HZ
Power consumption: approximately 100 W
Size: 1600mm × 500mm × 400mm
Weight: Approximately 80Kg

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