Water Quality Online Monitoring Device - Environmental XPRT · 2019-07-17 · water quality testing instruments, air quality monitoring systems, and gas leak alarm. We developed more

Water Quality Online Monitoring Device

Hangzhou Zetian Technology Co., Ltd. , founded in 2008, is located in Hangzhou, Zhejiang Province,

China. We are professional manufacturer of high-tech environmental monitoring equipment, analytical

instruments, industrial process control and industrial safety products.

We have five major products' series; Ultra-violet DOAS gas analyzer, Laser TDLAS gas analyzer,

water quality testing instruments, air quality monitoring systems, and gas leak alarm. We developed

more than 60 product models for these series, basically covering air and water pollution monitoring,

metallurgical industries, chemical and other on-line monitoring needs. Some of our products include

back-scatter laser dust meter, high temperature humidity meter, denitration escape ammonia analyzer,

sulphur analyzer, trace Cl analyzer system, immersive UV broad spectrum water analyzer, ammonia 2

nitrogen analyzer, colorimetric heavy analyzer, anodic stripping voltammetry heavy metal analyser etc.

We’ve combined integrated fields includ microelectronics, telecommunication, software, electrical and

mechanical engineering and other area of technology. We are among the few worldwide manufacturers

that have proprietary right for gas analysis, water analysis and dust analysis products at the same time.

We're technology innovation oriented driven organization. We trade with many corporate customers,

including domestic and foreign source on-line monitoring / process analysis system integrator; agents,

operation and maintenance providers; equipment manufacturers, thermal power plants, sewage

treatment plants, chemical plants and the like. We provide our clients with highly cost-effective

intellectual monitoring instrumentation and analysis equipment, analysis module / component, CEMS

program sets, complete set of water quality analysis program and other similar products. We accept

OEM, also provides ODM, on behalf of operation and maintenance and other services.

Hangzhou Zetian Technology is committed to the Integrity, Strength and Quality of our products. We're

internationally recognized. We warmly welcome you to visit us for business negotiation and products'

inspection.

ENTERPRISE INTRODUCTIONENTERPRISE INTRODUCTION

Technology Platform Introduction

Hangzhou Zetian Technology Co., Ltd. is the only domestic company with five analysis technical platforms which are

LED colorimetric platform, full spectrum colorimetric platform, cold atomic absorption colorimetric platform, anodic

dissolution platform and electrode method platform. These five kinds of analysis platform can measure the common

pollution factor in water, including COD, ammonia nitrogen, total phosphorus, total nitrogen and heavy metals such as

copper, chromium, lead, zinc, mercury, arsenic, etc. At the same time, using the full spectrum colorimetric platform or

anodic dissolution platform also can realize COD/ ammonia nitrogen integrated machine, total phosphorus/ total nitrogen

integrated machine, and all kinds of heavy metal integrated machine, etc.

The water quality series products of Hangzhou Zetian Technology Co., Ltd. have been experienced years of on-site

validation, stable and reliable, low failure rate. Comparison table of our products and other company's products is listed

below.

Platform Principle Introduction Advantages Disadvantages

LED Platform

Light source adopts high quality imported LED, precise constant current source drives LED, light transmits through the cuvette, and received by the photoelectric detector, using lambert beer's law to measure the concentration of the substance.

Simple measurement platform, low cost, high accuracy, suitable for common instruments, such as COD, ammonia nitrogen device, etc.

(1)In the same circumstances, the absorbance of LED light source spectrum is smaller than that of full spectrum method. (2)High temperature drift , must use reference beam, otherwise, the measurement data has large drift.(3)Generally, devices using LED light source can't measure a variety of factors simultaneously .

Full Spectrum Colorimetric

Platform

Using xenon lamp as light source, which transmits through the colorimeter cell, been detected by the other side of the spectrometer. Spectrometer obtains continuous spectrum from 200 nm to 800 nm bybeam splitter , then using the needed wavelengths, calculates the concentration of the substance based on Lambert. Beer's law.

(1 ) There a re severa l wave leng th po in t s to rea l i ze measurement, turbidity compensation, color saturation compensation and the reagent blank compensation. Suitable for analysis of heavy metal such as total lead, total manganese, total zinc, etc.(2) Unit absorbance of spectrometer is much bigger than that of LED, so detection limit can be lower.(3)Can get partial uv light (200 nm), while normally LED can't get this kind of wavelength.(4)Xenon lamp emits a continuous spectrum, so one device can measure multiple parameters.

(1)Higher cost compared to the LED platform. (2 )Sui tab le fo r mul t i -parameter in tegra ted machine, total nitrogen, heavy metal analyzer , etc.

Anodic Dissolution Platform

Under certain conditions, after electrolytic solution for a certain time, the metal ion deposits on the electrode. Then reversely apply voltage until reaching the oxidation voltage, the metal concentrated on the electrode dissolves out. Measuring according to the electrochemical dissolution curve.

(1) Can detect PPB level of metal content, suitable for heavy metals detection of pollution exits and surface water. ( 2 ) T h e r e a r e m u l t i - p a r a m e t e r s i n t e g r a t e d machine(can simultaneously measure various heavy metals).

(1)Higher cost compared to the colorimetric method. (2) Suitable for good water quality places (in case of poor water quality, can measure with our company's precision filtration equipment).

Cold Atomic Absorption

Colorimetric Platform

Light source adopts imported mercury lamp, which is driven by high voltage power supply. The light transmits through the cuvette (mercury vapor f l o w s t h r o u g h c u v e t t e ) a n d r e c e i v e d b y photoelectric detector, using lambert beer's law to measure the concentration of mercury vapor.

(1)Separate the mercury from water samples to avoid interference of ions, turbidity, chromaticity, etc. (2) Using mercury lamp to measure, it has big absorbance, and improves the detectionlimit.

(1)High costs.

Electrode Method Platform

It is a kind of electrochemical sensors which use membrane potential to measure activity or concentration of ions in the solution. When it contacts with solution which containing ions under test, on phase interface of the sensitive membrane and solution, it produces membrane potential relative to the ion activity.

(1) water sample pretreatment is simple, basically no need reagent;(2) applicable to some water samples of high concentration, without the influence of turbidity, etc.(3) simple maintenance.

(1)Electrode membrane needs regular maintenance and clean.

Zetian Technology Other Company

Peristaltic Pump Tube

The United States imported special rubber hose, long service life, a tube can use more than one year.

General rubber hose, easily go bad.

Sample ModuleHomemade sampling module uses the high pure PTFE material, sample valve imported from Japan, reliable operation, every channel is completely isolated.

Using rotary valve for sampling control, particularly for COD device, selector valve easily leaks, and if damaged, it needs whole replacement, large amount of maintenance.

Control System(1)Control solenoid valve uses non-contact electronic switch, no mechanical life. (2) Homemade control unit, after years of verification, low fault rate, high reliability, modular design, low maintenance cost.

(1)Control solenoid valve uses relay which has a mechanical life and is affected by the moisture, etc. (2) The control unit adopts PLC design, once damaged, it needs high cost of maintenance.

Instrument Protection

It provides instruments protection function as much as possible, such as reagents fault adding warning (especially H SO used in COD, if it is not H SO , it is likely to lead digestion tube 2 4 2 4

burst), leakage protection (if there is leakage, the instrument will report errors), pressure relief valve (making pressure in digestion tube within a certain range).

None, it is likely to lead digestion tube burst.

Grounding Ddesign

All the external interface and main circuit of equipment is in isolation, which makes the normal sample without the outside interference. Especially for unequal potential connection, its effect is particularly evident. External export and internal input are not isolated, communication is not

reliable.In analog circuits (measurement module) also made electrical isolation, which makes the minimum possible interference on measurement.

Measuring PartsModulating optical measurement makes no influence of external light on measurement, it is more stable

Affected by external light, measurement data is not stable.

External Interface

Largest configuration has 2×4-20 mA output, 4×4-20 mA input, 2 switch input, 2 switch output, can access the PH meter, flow meter, ss and other equipment, and can display on the main interface.

Very few external output interfaces.

Technology Platform It has five measuring platforms, suitable for the needs of different applicationsLess technology platform, single product, can't meet the ever-changing market needs

Permanganate Index Water Quality AnalyzerWDet-5000Mn

Instrument use the acidic potassium permanganate oxidation method to

measure the organic matter content of water.Theorganic matter in the

water is dispelled andoxidized by the acidic potassium permanganate at

the temperature of 95℃ .The amount of residual potassium

permanganate is reduced by excess sodium oxalate. Titrate the rest of

thesodium oxalate withpotassium permanganate.The index of

potassium permanganate is calculatedby the consumption of potassium

permanganate.

Product Features

Product Overview

Technical specifications

Acidic potassium permanganate spectrophotometry

No more than ±5%

0 20 50 100mg/L，～～～ adjustable

Digestion Time 3、5、20、30minutes optional

Continuous, 1, 2, 3... 24 hours, can also be triggered by a serial port

Period Minimum measurement period 45minutes

Span Drift ±5%

Reagent A single set of reagents can measure 250 samples

External Interface

Analog Output:1×4-20mA output (expandable to 2 channel) , the

maximum load 500Ω

Analog Input:1×4-20mA input (expandable to 2 channel) ,

compatible with 0-5V input

Relay Output: 4 channel (can be flexible configuration)

Maintenance ＜1hour per month

Working Temp. 5℃～40℃

Power 200W 220±10%VAC 50Hz ，regardless of the pump ( )

RS485/RS232/USB interface (optional)

Uncertainty

Interface

Method

Range

Interval

High reliability, low maintenanceCore components are imported, high reliability, long lifetime, suitable for long time online monitoring Water samples are quantified by means of the overflow cup, and reagents flow separately, which reduces the

pollution of the water samples on reagent flow pathWater overflow cup can be used for quantification of bad water qualityAll parts contacted with liquid before delivery will havea special test to ensure that these parts can be used for a

long timeFlow path is not easy to jam through the special design

Accurate measurement, unique designReaction liquid are analyzed by using advanced image recognition technology, and more accurate judgment of the

titration end-point Reagent is quantified by using capacitance metering module, high accuracy, more simple and reliable flow path

designAutomatically adjust the titration speed, high analysis efficiency

Identification methodlike human eye, can quickly identify the consumption of solution directlyA variety of practical function, providing humanized operation

When a reagent leakage, instruments and automatic will alarm and prompt the user for maintenanceEquipment has self-diagnosis function, if there is a defective, it will automatically alarm, and display nameExceed standard sample retained function, abnormal data samples will be retained for handwork analysisSimple equipment operation, the touch screen control panel and friendly software interface, providing abundant

information, the software is simple to understandA digital lock screen, prevent others wrong operation

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WDet-5000Ammonia-Nitrogen Water Quality Online Automatic Analyzer

Wdet - 5000 ammonia-nitrogen water quality online automatic analyzer (salicylic acid

method) based on the salicylic acid spectrophotometric method. In alkaline medium, the

ammonia nitrogen in water samples oxidizes into chloramine by hypochlorite oxidation.

Under the effect of catalyst, it reacts with salicylate to form compounds which have

characteristic absorption at 697 nm. Ammonia nitrogen content in water samples is

calculated by measuring the absorbance of the compounds.

WDet - 5000 ammonia-nitrogen water quality online automatic analyzer (salicylic acid)

can be widely used in ammonia nitrogen monitoring of surface water environment,

industrial depth treatment water sample.

High reliability, low maintenance

Core components are imported, high reliability, long lifetime, suitable for long time online monitoring

Using photoelectric measurement method and special measuring algorithm

All parts contact with liquid will be particularly tested to ensure a long service life

Specially designed flow path to prevent blocking

Accurate measurement, wide application scope

Photoelectric measurement method， accurate sampling ， low sample injection error

Automatic chromaticity and turbidity compensation algorithm, give full consideration to the situation of actual

water samples, real and reliable monitoring results

Unique hybrid technology of bubble agitation ensures thorough mixing of samples and reagents

Safe use, efficient analysis

Automatic leakage alarming, when reagent leakage appears, instrument self-check alarms, remind maintenance

Abnormal state automatic processing, when a power exception occurs during the operation, the instrument will self-

diagnose abnormal state the next time power restores, and clean flow path to recover sampling status

Easy operation, touch screen control panel and friendly software interface provide abundant information. The

software is easy to understand

A digital lock screen, prevent wrong operation

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Product Features


Product Overview

Salicylic acid spectrophotometric method

Accuracy：±3% F.S.

Reroducibility：±5% F.S.

0～0.5～2～10mg/L，other range is adjustable

Period Minimum measurement period 15minutes

Automatically adjust the measuring interval, can also be triggered by serial port

Detection Limit 0.05mg/L

Span Drift ±5%


External Interface


maximum load 500Ω








Uncertainty

Interface

Method

Range

Interval

Total Phosphorus Water Quality Online Automatic AnalyzerWDet-5000

Under neutral conditions, the sample is digested by potassium

phosphorus converting all of phosphorus into orthophosphate. Then

under acidic conditions, orthophosphate reacts with molybdate and

oxygen antimony potassium tartrate, generating phosphomolybdic acid

that is reduced by ascorbic acid to form blue complex. The amount of

blue complex is proportional to orthophosphate. Measurement by

colorimetric method gets total phosphorus content ultimately.

It applies to the monitoring of pollution sources and surface

water，can also be applied to the detection of the sewage treatment

process.

Method Ammonium molybdate spectrophotometric method

Uncertainty

Range 0.01～10mg/L,adjustable

Interval Continuous, 1, 2, 3... 24 hours, can also be triggered by a serial port

Reproducibility ±3%


External

Interface

Maintenance ＜2hours/month


Power 200W(220±10%VAC 50Hz), regardless of the pump

RS485/RS232/USB interface (optional)Interface

Analog Output：1×4-20mA output (expandable to 2 channel), the

maximum load 500Ω

Analog Input： 1×4-20mA input (expandable to 2 channel),

compatible with 0-5V input, optional


Molybdate yellow colorimetric method

0.2～100mg/L,adjustable

Product Overview













When a reagent leakage, instruments and automatic will alarm and remind maintenance

Equipment has self-diagnosis function, if there is a defective, it will automatically alarm and display

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Linearity：±3%

Reproducibility：±3%

Product Features

Total Nitrogen Water Quality Online Automatic AnalyzerWDet-5000

Under more than 60℃ in aqueous solution, potassium persulfate can be

completely decomposed into potassium bisulfate and atomic oxygen, and

at 120℃~ 124℃ conditions, the atomic oxygen can make the nitrogen of

nitrogen compound in water samples element oxidize to nitrate,

andorganic matter are also oxidized and decomposed simultaneously. The

absorbance of water samples is measured by UV spectrophotometry at the

wavelength of 220nm and 275nm. Total nitrogen content is calculated

according to this absorbance.

It applies to the monitoring of environmental pollution, industrial process

water, municipal wastewater treatment.

Product Overview


Alkaline potassium persulfate digestion - UV spectrophotometry

Reproducibility：±3%

Linearity：±3%

0.05～100～200mg/L，adjustable

Min Period Less than 1 hour


External Interface


maximum load 500Ω








Uncertainty

Interface

Method

Range




All parts contact with liquid will be particularly tested to ensure a long service life..










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Product Features

Immersion Water Quality AnalyzerWDet-5000UVI

WDet-5000UVI is the first full-spectrum (200-800nm)

immersion UV analyzer. Apply to measurement COD,

BOD, UV254, nitrate, TOC, DOC, turbidity, TSS, color

and other indicators of surface water, groundwater,

municipal wastewater.

It uses the pulse xenon lamp as light source, optical fiber

UV spectrometer as the detector, can real-time collect

water pollutants absorption spectrum between 200-800

nm, using chemometrics algorithms technology to real-

time analysis water contaminants. Its light path is

illustrated right:

220VAC，30W

2%F.S.

＜1%F.S.

0～50～200mg/L，Greater range can be customized

The shortest 60 seconds, the cycle can be set

＜10m

Can be adjusted according to the site conditions

5℃～45℃

IP65(secondary instrument)

Can be set

RS232/RS485 , 4-20mA output(2 channel)(Baud rate can be set)

φ60*380.5mm

5kg

Method

Power

Linearity

Zero Drift

Range(COD)

Interval

Probes Depth

Optical Path

Working Temp.

Enclosure Rating

Auto-cleaning

Interface

Probe Size

Probe Weight

Secondary instrument

Air compressor

Cable Gas circuit

Sewage being measured

Product Overview

Applications Scenarios Technical specifications

Technical Features

Light source

Fiber optic spectrometer

UV/visible differential optical absorption spectroscopy，

wavelength range 200-800nm

Analyzerprobe

1: Compared with the double wavelength background subtraction

technique, full spectrum (200-800nm) measurement technique

and chemometric algorithm allow more parameters to be measured,

and the influence of composition change is small

2: Automatic cleaning of gas probe with high-pressure provides

higher reliability than the mechanical blade

3: No reagents, low operating costs, no secondary pollution

4: Fast response(2s), applicable to real-time requirements of the occasion

5: Interference-free chlorine ion

WDet-5000UVS Extractive Water Quality Analyzer

It applies to the occasion of poor water quality

conditions, such as enterprises pollution exits, sewage

treatment plants entrance, sewage treatment plant

process on-line detection.

Extractive UV water quality analyzer uses full spectrum measurement technique which is the same as immersion water

quality analyzer. It can well improve the situation that optical lens of immersion UV water quality analyzer is easy to be

polluted in the case of poor water quality conditions, and manual maintenance is high. Every time the extractive UV water

quality analyzer measures through extractive liquid into the measuring chamber by the peristaltic pump. After the

measurement, the liquid can be discharged, and measuring pool should be cleaned by clean fluid. Its principle is as

follows:

Cleaningfluid

Peristaltic pump

Fiber optic spectrometer Light source

Measuringcell

Sewage being measured

Product Overview

ApplicationsTechnical Features

1: Measuring pool immerses in the cleaning fluid at ordinary

times, real-time sampling, real-time emptying, high

adaptation to the poor water quality

2: Automatic zero, no maintenance, no scale calibration, only

regular cleaning fluid(composition is dilute sulphuric acid,

consumption is 3 ml each time, configurable by users)

3:Compared with the double wavelength background

subtraction technique, full spectrum (200-800nm)

measurement technique and chemometric algorithm allow

more parameters to be measured, and the influence of

composition change is small

4: Can realize high range measurement (COD up to 10000 mg/L)

5: Fast response (5s) is applicable to occasions of real-time

requirements

6: Interference-free from chlorine ion

This instrument adopts the pulse xenon lamp as light source, optical fiber

UV spectrometer as the detector, collect real-time absorption spectrum of

water quality pollutants between 200-800 nm, using the weighted multi-

wave leng th abso rbance a s say WMW (Weigh ted Wave leng th

absorptiometry), to improve the shortcomings of UV method analyzer.

Taking COD for example, in detection of five typical UV absorption spectra

of the organic matter between 243 nm to 290 nm, according to the UV

absorbance information of full range (it builds a mathematic model of the

spectral data and the COD value, and by using the model extrapolation

ability, according to the absorbance value of unknown samples, it reversely

calculates the COD value of water sample.)

It can achieve the measurement of organic pollutants such as COD, BOD,

etc, widely used in environmental pollution monitoring, surface water

monitoring, municipal sewage treatment.

WDet-5000UV UV Water Quality Online Analyzer

Product Overview


±5%

COD: 0～200mg/L，higher range can be customized

BOD: 0～200mg/L，higher range can be customized

UV-vis spectrophotometry




External Interface


maximum load 500Ω








Range

Interface

Uncertainty

Method

Interval














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Product Features

MDet-6000XAnodic Stripping Heavy Metal Water Quality Online Analyzer

Analyzer uses electrochemical anodic stripping voltammetry which is

ranked by the US EPA of authority as a standard test method. Stripping

voltammetry is also called reverse stripping polarography, which make

the material be electrolytic a certain amount of time under the ion

polarographic analysis of limiting current potential test. Then change

the electrode potential, make the material gathered on the electrode to

be dissolved. According to the given volt-ampere curve in the

dissolution process for quantitative analysis.

(1) Before testing, the instruments automatically extract the fresh sample to clean sample pipe, metrology pipe and

measurement pool, to ensure that the sample is representative.

(2) The instrument uses the new peristaltic pump technology to sample. Pump pipe does not directly contact with

samples and reagents. The volume of the sample is controlled by an optical measurement system.

(3) Same as sample injection, reagent (buffer, electrolyte, etc.) is absorbed by peristaltic pump. Inhaled volume is

controlled by the optical measurement system. Reagent and water are mixed through the form of the bubble.

(4) Placing a constant voltage on the working electrode, the ion under test restores and dissolves out on the work elec-

trode surface. Then reversely apply a linear change scanning voltage. Metal elemental dissolves on the working elec-

trode, in the electrode circuit it produces characteristic current which feeds back ion concentration in the solution.

(5) Analyzer can use the built-in calibration standard solution and cleaning solution automatically for equipment

calibration and cleaning according to preset cycle.

ØPharmaceutical factory, chemical plants, electroplating factory.

ØLead-acid battery factory.

ØAll kinds of metal factory.

ØSewage treatment plant and other occasions.

Distilled

water

Dig

estion

solu

tion

Ad

justin

g so

lutio

n

Waste fluid bottle

Waste fluid

Waste flu

id

Standard solutionDistilled water

Water sampleAdjusting solution

ElectrolyteChannel valve

OxidantCoating solution

Ten-way valve

Meterin

g tub

e

Reference tank

Digestion tube

Peristaltic pump

Electrolytic tank

Elec t r ic machinery

Continuous, 1, 2, 3...24 hours a day, or triggered by the modbus device

1×4-20 mA output (expandable to 2 channel), 2 multi-function relay output

Components Cadmium, lead, zinc, copper, mercury, arsenic

Method Anodic stripping voltammetry

Range 1ppb～10ppm

Accuracy ±3%(100ppb)

Reproducibility ±5%(100ppb)

Enrichment Time 15s，30s，200s can be set

Interval

Calibration Automatic calibration time, interval can be set

Size 1460*510*410（mm）

Weigh

Working Temp. 5℃～40℃, ＜95%，no condensationhumidity

Power 100W（220±10%VAC 50Hz）， regardless of the pump

Output

Maintenance 15days


Preheat Time 2hours

Other Automatic cleaning, data records, print, buzzer alarm

70kg( )exclusive of reagent

Basic Principle

Measurement Process

Applications Analyzer Flow Chart


Portable Anodic Stripping Heavy Metal AnalyzerPDV-5000X

Analyzer uses anodic stripping voltammetry to detect heavy metals, it has features of low detection limit (up to PPB

level), high precision, stable performance, easy to carry, especially suitable for field operation. Widely used in

monitoring heavy metal content in the water of soil, food, solid material, drinking water, surface water, beverage, water

environment, seawater, industrial waste water.

Typically anodic stripping heavy metal detection process basically includes two steps:

(1)Use oxidant to decompose and convert metals contained in water samples into ions, then under constant potential

which is more negative than its peak potential, digestion solution pre-electrolyzes and gathers on the working electrode

for a certain time.

(2)Scan potential in the direction from negative to positive, make the material

enriched on the electrode oxidation dissolved. And record its dissolution map,

according to the stripping peak potentials to determine the composition of the

material being tested. According to the stripping peak current, the content of

material is measured.

Electrolytic reduction is slow accumulation, dissolution is quickly released, at

the time of dissolution, Faraday current as a signal increases greatly, so that the

sensitivity of method is greatly improved

ØTerminal analysis of the heavy metal sample

content in the laboratory.

ØThe rapid emergency detection of outdoor

environment accident point.

ØThe inspection analysis of industrial process.

Components Cadmium, lead, zinc, copper, mercury, arsenic

Method Anodic stripping voltammetry

Range 1ppb～10ppm

Accuracy ±3%(100ppb)

Reproducibility ±5%(100ppb)

Measuring Time 15s，60s，200s can be set

Battery Life Without external power supply, measuring time with built-in lithium battery can be 4 hours hours continuously

continuous

Size 200*102*55（mm）

Weight 5.3kg（）including the reagent

Working Temp. 5℃～40℃,humidity＜95%，no condensation

Power 220VAC( In),12V/1.5A(Out)

Signal Output Bluetooth

Maintenance Depending on the sample analysis cycle(nance

advise before measuring)

mainte-

Reagent Support measuring 50 samples , optional reagent kit with reagent

Preheat Time 2hours

Other Data record and print

Basic Principle

Applications


1: 240×160 pixel LCD screen

2: Form a complete set of experimental instruments, make the direct analysis possible on scene

3:Multiple sets of measuring cups, it is convenient to continuously measure a variety of samples at the same time

4: Detachable electrode combination, convenient to replace and maintain

5: In addition to the default measurement method, analysis of parameters can be set freely, to facilitate the expansion

of the measurement method

Product Features

WDet-5000 Integrated Water Quality Online Analyzer

WDet-6000X water qualityautomatic analyzer is a high level integration of

multi-parameter water quality analyzer, as upgrade product of WDet-

5000integrated water quality analyzer, analyzer, ituses modular design,

each parameter using independent sample and analysis module, to

realizethe use of any combinationsuch as COD, ammonia nitrogen, total

phosphorus, total nitrogen and a variety of heavy metals.Reagentused by

Instruments can be configured according to relevant national standards

It can be widely used in water pollution monitoring, industrial process

water, industrial and municipal wastewater treatment and surface water

monitoring, etc.

Product Overview

Technical specificationsCOD, ammonia nitrogen, total phosphorus, total nitrogen and part

of heavy metals. The other parameters can be customized

3、5、20、30、40、60、80、100、120min optional

Hourly and interval measurement, can also start the measurementvia a

serial port


External Interface


maximum load 500Ω







RS485/RS232/USB interface (optional) Interface

Parameters

Digestion Time

Interval

Product FeaturesHigh reliability, small amount of maintenance

Core components are imported, high reliability, long lifetime, suitable for long time online monitoring Water samples are quantified by means of the overflow cup, and reagents flow separately, which reduces the

pollution of the water samples on reagent flow pathWater overflow cup can be used for quantification of bad water qualityAll parts contacted with liquid before delivery will havea special test to ensure that these parts can be used for a

long timeFlow path is not easy to jam through the special design

Modular design, more convenient combinationA single HMI module can connect with multiple analysis module, to facilitate the measurement combinationof the

multiple parameterEach module has independent sample, resolution and measurement function, no cross interferenceStructure design of high compatibility, monitoring modulecan be replaced according to the field requirements

A variety of practical function, providing humanized operationWhen a reagent leakage, instruments and automatic will alarm and prompt the user for maintenanceAutomatic processingof abnormal state, whenpowerexception occurs during the operation, the instrument will

diagnose abnormal state, and clean flow path back to wait for sample statusthe next time power restoresExceed standard sample retained function, abnormal data samples will be retained for handwork analysisSimple equipment operation, the touch screen control panel and friendly software interface, providing abundant

information, the software is simple to understandA digital lock screen, prevent others wrong operation

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CCOD:low 10% of measuring value,≥40mg/L

low 5mg/L,＜40mg/L

Ammonia nitrogen: 3%

Total phosphorus: 3%

Total nitrogen: 5%

Heavy metals: 5%

Accuracy

COD/Ammonia Nitrogen/TPIntegration Water Quality Automatic AnalyzerWDet-5000I

WDet-5000 COD/ammonia nitrogen/TP Integration water quality analyzer is a new kind of automatic on-line analyzer

used for simultaneously measuring ammonia nitrogen, total phosphorus and chemical oxygen demand (UV method) in the

water. Using the latest photoelectric measurement, UV-VIS spectral measurement techniques, it has features of accurate

measurement, high integration, low detection limit, high reliability, strong adaptability, etc. Instrument reagent can be

self-configured in accordance with the relevant national standard.

COD measurement uses the weighted multiwavelength absorbance assay WMW (Weighted

Wavelength absorptiometry) to improve the shortcomings of the UV method analyzer. In

detection of five typical UV absorption spectra of the organic matter between 243 nm to 290 nm,

according to the UV absorbance information of all band, it builds a mathematic model of the

spectral data and the COD value, and by using the model extrapolation ability, according to the

absorbance value of unknown samples, it reversely calculates the COD value of water sample.

1: Full spectrum (200-800nm) measurement techniques, can simultaneously measure COD(UV method),

ammonia nitrogen and total phosphorus

2: Photoelectric non-contact measurement, high measuring accuracy, high reliability

3: Volume of a single sample liquid is less than 9 ml, low operational cost

4: Using high resolution industrial-grade colorized touch screen, easy to operate, rich information

5: Dispense with monitoring cabin, can be directly installed outdoors.

6: Built-in industrial air conditioner, avoid the influence of ambient temperature.

7: Support connections with instrument such as flow meter, PH meter.

COD

Molybdenum yellow colorimetry

±3%F.S.±5%F.S.

0-50mg/L(In terms of phosphorus）

±3%±5%

A single set of reagents can measure 250 samples

Total Phosphorus（TP）

＜1hour per month

5℃～40℃

200W（220±10%VAC 50Hz），regardless of the pump

0～200 mg/L～500

200-800nm spectrum

±5%F.S.

±5%

0～10mg/L

Ammonia Nitrogen

Nessler's reagent colorimetric


Method

Accuracy

Range

Reproducibility

ExternalInterface

Maintenance

Working Temp.

Type

Measurement

Reagent

UV-vis spectrophotometry

Power

Ultraviolet source

Spectrograph

Reaction tank

Optical fiber

Principle of full spectrum detection

Product Overview

Product Features

Instrument Indexes

Analog output: Each parameter configuration 1 channel

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output

Analog Input 1×4-20mA input (expandable to 2 channel), compatible with 0-5V input (optional)

Relay Control:4 channel,can be flexibly configured

Communication Interface: RS485/RS232/USB interface (optional)

CODcr Water Quality Online Automatic AnalyzerCODet-5000

CODet-5000 is a new-type on-line automatic analyzer for chemical oxygen demand

(COD) measurement. The instrument uses the latest technology such as optical

measurement, high temperature and high pressure digestion, color integration, etc, has the

feature of accurate measurement, low detection limit, high reliability and good

adaptability, etc.

CODet-5000 CODcr Water Quality Online Automatic Analyzer is widely used in water

pollution monitoring, industrial process water, industrial and municipal wastewater

treatment and other fields.

Quantitative potassium dichromate is added in water samples, and under the condition of

strong acid with silver halide as catalyst, after high temperature, oxygen organic matter and 3+ 6+reducing substances in water will restore Cr back to Cr . Through the photoelectric 3+colorimetric, measuring the generation of Cr , and comparing the measuring value of

sample with the calibration curve of the standard sample value, the COD value can be

obtained.


Water quality determination of cod-rapid spectrophotometric method

Accuracy：≥40mg/L，<10% of the measured value.

<40mg/L, <5mg/L

0～1000～5000mg/L (customizable)

Digestion Time 3、5、20、30、40、60、80、100 or 120minutes


Zero Drift ±5mg/L

Span Drift ±10%


External Interface


maximum load 500Ω








Uncertainty

Interface

1: Photoelectric non-contact measurement, high measuring accuracy and high reliability operation

2: Each sampling requires liquid amount < 9 ml, low maintenance cost

3: Integrated digestion / colorimetric module (patent technology), direct measurement after high temperature (170℃)

high pressure airtight digestion, compact structure, complete digestion, high efficiency

4: Using high resolution industrial-grade color touch screen, easy operation, rich information

5: It can access signal of flow meter and PH meter, main interface can real-time display the measured values

6: A multistage administrative access password and screen digital lock, prevent wrong operation

7: It can realize remote control (including start/stop, measurement, calibration, cleaning, etc.)

Product Features

Analysis Principle

Method

Range

Interval

Product Overview

Ammonia-Nitrogen Water Quality Online Automatic AnalyzerWDet-5000

WDet-5000 ammonia-nitrogen water quality online automatic

analyzer uses nessler's reagent colorimetric method. Now it provides

two options, one for direct injection, colorimetric measurement

scheme, namely, direct method, suitable for circumstance of the stable

and clean water quality, such as sewage treatment plant export.

Another kind is distillation of sewage to drive out NH , by using 3

absorbing liquid to absorb NH and colorimetric measurement, apply 3

to the sewage treatment plant entrance, colored water, etc.

It applies to water pollution monitoring, industrial process water,

industrial and municipal wastewater treatment and other fields.

Ammonia nitrogen in water is mainly refers to the ammonia form of 4+NH and NH , when alkali is strong, ammonia nitrogen mainly exists 3

in the form of NH . Directly join the Nessler's reagent in the water 3

samples (or diluted), using spectrophotometer to realize the

measurement of ammonia nitrogen in water samples.

Product Features1: Support direct method and distillation method,

convenient for user selection

2: Photoelectric non-contact measurement, high

measuring accuracy and high reliability operation

3: Patent of circular multi-channel sample dilution

technique, which can realize large dilution ratio

4: Each sampling requires liquid amount < 9 ml, low

maintenance cost

5: United States imported peristaltic pump pipe, in the

case of sampling per hour, pump pipe can be used

normally for more than six months

6: Reagents with special formula and long shelf life

Absorption/ colorimetric tube

LED DetectorMeasurement,sample injection, drainage module

Join the absorption liquid and nessler's A/nessler's B

Absorption/ colorimetric

tube

LED Detector

Join the absorption liquid and nessler's A

Measurement,sample injection, drainage module

Distillation tube

Peristaltic pump

Heater strip

1/8"Fluorine tube 1/8"Fluorine tube

PT100

Product Overview

Analysis Principal

Direct Method Flow Path Distillation Method Flow Path


Nessler's reagent colorimetric method

±2%F.S./7d

640*480 touch color LCD display

Reagent

Method

Span Drift

Display Screen

A single set of reagents can measure 250 samples

External Interface

Analog Output:1×4-20mA output (expandable to 2

channel) , the maximum load 500Ω

Analog Input:1×4-20mA input (expandable to 2

channel) , compatible with 0-5V input



Multirange, 0.05～50mg/L(low), 0.5～300mg/L(high) Range

±2%F.S./7dZero Drift

Self-Checking

Maintenance

Self monitoring leakage, instrument status self-diagnosis

Minimum measurement period 25minutesPeriod

±5%Linearity

±3%F.S.Reproducibility

4000 groups (extensible SD card storage)Data Storage



Interval>6months, every time approx.30minutes

MDet-5000XColorimetric Method Heavy Metal Water Quality Online Analyzer

Heavy metal pollution refers to the environmental pollution caused by

heavy metals or their compounds, which mainly caused by human

factors such as mining, exhaust emissions, sewage irrigation and the

use of heavy metal products. Heavy metal content of the environment

caused by human activities increases and beyond the normal range,

which leads to the deterioration of the environment quality.

Mdet-5000X series heavy metal water quality online analyzer can

detect the heavy metal content in the water quality online,

measurement is accurate, reliable and safe.

Product Overview

Product Features

Metal Measurement Field Key Indicators

Hexavalent Chromium

/Total Chromium

Widely used in monitoring of hexavalent chromium (total chromium) in industrial sewage

treatment plant and industrial process (such as electroplating, metallurgy, printing and

dyeing industry) , etc.

Range：0～2mg/L（expandable）

：±5% Uncertainty

Copper Ions

/ Total Copper

Widely used in monitoring of copper in wastewater produced by the process of the copper

zinc ore mining and smelting, metal processing, machinery manufacturing, steel production

and so on.


：±5% Uncertainty

Nickel Ions

/Total Nickel

Widely used in monitoring of nickel in waste water produced by mining, smelting, metal

production, metal processing, electroplating, chemical, ceramics and glass, etc.


：±5% Uncertainty

Arsenic Ion

/Total Arsenic

Widely used in monitoring of arsenic in waste water produced by arsenic metal mining,

smelting, production of glass, pigments, technical and paper with arsenic and arsenic

compounds as raw materials, use of arsenic pesticide.


：±5% Uncertainty

Mercury Ion

/ Total Mercury

Widely used in monitoring of pollutants containing mercury produced by metal production,

the semiconductor industry, energy-saving lamp production enterprise.

Range：0～0.5mg/L（expandable）

：±5% Uncertainty

Manganese Ion

/ Total Manganese

Widely used in monitoring of pollutants containing manganese produced by manganese ore

mining, smelting, and production of manganese, glass colorant, dye, paint, paint pigment,

matches, soap, synthetic rubber, plastics, pesticides.


：±5% Uncertainty

Zinc Ions

/ Total Zinc

Widely used in monitoring of industrial waste water containing zinc pollutants produced by

zinc mining, smelting processing, machinery manufacturing and galvanized, instruments

and meters, organic synthesis and papermaking.


：±5% Uncertainty


Core components are imported, high reliability, long lifetime, suitable for

long time online monitoring






Automatic chromaticity and turbidity compensation algorithm, give full consideration

to the situation of actual water samples, real and reliable monitoring results





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Total Lead Water Quality Online AnalyzerMDet-5000Pb

This instrument adopts the acidic oxidant under high temperature and

high pressure to transform leaded products into lead ion, then the

porphyrin chromogenic reagent and lead ions in alkaline conditions

form orange-yellow complex compound which has a characteristic

absorption at 480 nm. The complex concentration is proportional to the

concentration of Pb ion, and then through the multi-wave colorimetric

of characteristics complex compound by precision spectrometer, the

content of lead in water is accurately measured.

It is widely used in environmental pollution monitoring

(electroplating, battery, metallurgy, printing and dyeing and other

industries), and municipal wastewater monitoring.

Product Overview


Porphyrin reagent colorimetric method

0.05～5mg/L,higher range can be customized




External Interface


maximum load 500Ω








Method

Range

Interval

Uncertainty ±5%














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Product Features

MDet-5000Hg Total mercury Water Quality Online Analyzer

Mercury atomic vapor has a strong absorption in ultraviolet of 253.7

nm wavelength，mercury vapor concentration is proportional to the

absorption value. Using stannous chloride to restore mercury ofwater

samples into elemental mercury, pump in the air at ambient

temperature, vaporize the mercury, load the cold atomic absorption

mercury measurement instrument, measure the absorption value, map

the concentration peak shape, the total mercury content in the sample

can be obtained.

Surface water, groundwater, drinking water, sewage and industrial

wastewater

Measuring module

Mercury absorption curve

absorbance

Product Overview

Technical Specifications

Cold atomic absorption spectrophotometry

0.002～0.2mg/L




External Interface


maximum load 500Ω








Method

Range

Interval

±3%Uncertainty














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Product Features

Under the condition of weak acid, cyanide of water samples and

chloramine T generate chloramine cyanide, and then react with

isonicotinic acid, after the hydrolysis generate pentene dialdehyde,

finally, together with barbituric acid generate purple blue compounds,

in a certain concentration range, the chroma is proportional to the

concentration of cyanide.

It applies to the cyanide monitoring of surface water, sewage and

industrial wastewater.

WDet-5000CN Cyanide Water Quality Online Analyzer

Product Overview


Isonicotinic acid - barbituric acid

±5%

0～1mg/L,higher range can be customized




External Interface


maximum load 500Ω








Uncertainty

Interface

Method

Range

Interval














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Product Features

When fluorine electrode contacts with the test solution containing

fluorine, battery electromotive force E changes with the change of

fluorine ion activity in the solution (comply with the Nernst

equation).When the total ion strength of solution is the fixed value and

enough, it obeys the relation:

1: Design on the principle of single chip solid ion selective electrode,

the electrode is easy to clean

2: Built-in reference electrode, high measurement accuracy

Slope: within the linear range, when the activity of the ions under test

changes an order of magnitude, it causes electrode potential change value

(mV), which called the slope of electrode to a given ion, also called the

slope of E - logai curve. The theoretical value is represented:

S=2.303RT/(NIF)

It is suitable for determination of the fluoride in surface water, ground

water and industrial wastewater (including semiconductor

manufacturing, solar cells and metallurgical).

Method Ion selective electrode method

Range 0～2000～20000mg/L，other range is adjustable

Interval Continuous, 1, 2, 3... 24 hours, can also be triggered by a serial port

Zero Drift ±5%


ExternalInterface



Power 200W（220±10%VAC 50Hz）， regardless of the pump

RS485/RS232/USB interface (optional)Interface

Analog Output:1×4-20mA output (expandable to 2 channel),

the maximum load 500Ω

Analog Input: 1×4-20mA input (expandable to 2 channel),

compatible with 0-5V input, optional


Span Drift

Linearity

Reproducibility

±5%

±5%

±5%

Period 20 minutes

Fluoride Water Quality Online AnalyzerMDet-5000F

Instrument Principle

Applications

Product Features

Technical Specifications

Corresponding range and detection limitof ion selective electrode

-300

-250

-200mV

-[F ]

E=E2.303RT

Flog c

F

Turbidity analyser

Fluorescence dissolved oxygen analyzer

ØWater plant, turbidity monitoring of reservoir, water wells, clear

water reservoir, before and after filtration, sedimentation and

effluent water.

ØIndustrial production process: water quality monitoring of water

circulation in production, circulating water, etc.

ØSewage treatment: water quality monitoring of water inlet and

outlet.

LCD screen and multiple parameters with the screen display

Built-in bubble elimination system, improve the measurement accuracy and

stability

High accuracy, good repeatability, strong anti-interference ability

Using two-point correction method

Simple cleaning maintenance, convenient correction

Field calibration by comparison

A variety of measuring unit form such as NTU, mg/L

Multifarious installation such as immersion flow-through and plug-in

Sensor can be configured with purging device, controlled by the transmitter for

self-cleaning

Fluorescence principle, sensitive reaction, stable and reliable measurement

Special optical coating, no replacement, no electrolyte, no maintenance

No oxygen consumption, no request of flow rate and agitation.

PPM level sensor, suitable for sewage measurement control

Many kinds of signal output such as current, relay, etc

LCD liquid crystal display

Multiple installation, easy maintenance

Long service life, high accuracy and resolution

Note: please call us for specific performance indicators.

ØMunicipal and industrial wastewater treatment, including

adjusting pool, aeration tank, aerobic and anaerobic digestion

pool, water testing, etc.

ØPower plant water treatment, boiler circulating water.

ØWater environment monitoring of rivers, lakes, sea water,

fisheries aquaculture, etc.

Other Water Quality Online Analyzer

Applications

Product Features

Applications

Product Features

Residual chlorine analyzer Conductivity meter PH meter Sludge concentration meter Ultrasonic flowmeter

Applications

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Water monitoring

Environmental monitoring station

Municipal water treatment process

Municipal pipe network water quality monitoring

Rural water monitoring

Circulating cooling water

Swimming pool water operation management

Industrial water recycling

Factory aquaculture and other fields

Typical Applications

HANGZHOU ZETIAN TECHNOLOGY CO.,LTD.

Web

Phone: 86-13588711905 86-0571-28322780

Fax: 86-0571-87851772

E-mail: [email protected]: en.zetian-tech.com

Add: Taiheng Mansion, 22 Zhiren Street, Binjiang District, Hangzhou,

Zhejiang Provice, China.

Documents

Water Quality Online Monitoring Device - Environmental XPRT · 2019-07-17 · water quality testing instruments, air quality monitoring systems, and gas leak alarm. We developed more