Hash VT-7900 Fully Automated Laboratory Water Quality Analysis System

Hash VT-7900 Fully Automated Laboratory Water Quality Analysis System

Working Principle:

The VT-7900 fully automatic laboratory water quality analysis system is a COD fully automatic analyzer based on HJ/T 399-2007 "Determination of Chemical Oxygen Demand in Water Quality - Rapid Digestion spectrophotometric method" and USEPA digestion colorimetric method. This product integrates functions such as automatic sample/dosing, stirring, mixing, cleaning, digestion, and measurement, aiming to achieve high automation of the entire experimental process, improve the accuracy and precision of experimental data, reduce the harm of laboratory chemical reagents to experimental personnel, and ensure the safe, accurate, and effective conduct of water quality detection and analysis.

-Measurement parameters:

COD

-Typical applications:

Petrochemical, municipal, environmental protection, third-party testing and other industries

-Instrument features:

The entire process of sample pretreatment and measurement is automated, freeing up manpower and achieving unmanned operation.

Having the ability to pre process and measure large quantities of samples

Less reagent usage, safer and more environmentally friendly, using Hash 16mm COD pre made reagent

Using high-precision injection pumps to achieve precise sample addition and reduce manual experimental errors

Automatically clean the inner and outer walls of the injection needle to avoid cross contamination and reduce memory effects

Automatic stirring, easily achieving homogenization of particles and suspended solids in the sample

Intelligent human-computer interaction interface, simple and easy to use, can automatically generate reports and output data

The robotic arm automatically rotates, performs multi-point color comparison, automatically averages, eliminates measurement interference, and achieves more accurate measurements

technical indicators

measurement parametersChemical Oxygen Demand (COD)

Determination methodCOD: 2-hour standard method and 20 minute rapid method;

meet the standardCOD standard: The 20 minute rapid method complies with HJ/T399-2007 "Determination of Chemical Oxygen Demand in Water Quality - Rapid Digestion spectrophotometric method";

The 2-hour standard method complies with the US Environmental Protection Agency (USEPA) 5220D standard method for ammonia nitrogen:

Spectral colorimetric unit: meets the requirements of JJG178-2007 "Verification Regulations for Ultraviolet, Visible, and Near Infrared Spectrophotometers"

measurement range2-hour standard method COD: low range (3-150 mg/L); High range (20~1500 mg/L); Ultra high range (200-15000 mg/L)

20 minute rapid method COD: low range (15-150 mg/L); High range (100-1000 mg/L)

COD reagent is resistant to chlorine interferenceLow range and high range: chloride ion<2000 mg/L;

Ultra high range: chloride ions<20000 mg/L;

Sample size48 bits, supporting the expansion of sample size (optional external automatic sampler)

Dissolving digits48 digits

Dissolution temperatureRoom temperature~190 ℃, default digestion temperature for 2-hour method program is 150 ℃, default digestion temperature for 20 minute rapid method program is 165 ℃;

digestion time2 hours or 20 minutes, or customizable digestion time

Dissolve temperature indication error±1℃；

Uniformity of digestion temperature≤3℃；

cooling methodAuxiliary air cooling device to accelerate the cooling and temperature reduction of the reagent tube after digestion;

calibration curveThe instrument is equipped with COD pre prepared reagent calibration curves of different ranges;

injection volume0-10ml， Support customization;

Injection accuracy≤1%；

Injection methodDirect non-contact injection technology using injection pumps;

Cleaning functionAutomatically clean the inner and outer walls of the injection needle after injection;

Dilution functionSupport automatic dilution function;

Allow sample particle size160 μm；

Multi point colorimetric measurementSupport automatic rotation of pre made reagent tubes, achieve multi-point colorimetric measurement function, and automatically calculate the average value;

contact methodSupport data upload to LIMS system (users need to cooperate in providing data interfaces);

Instrument control modePC software for computers;

Early warning functionWhen the prefabricated reagent tube cannot be unscrewed, the instrument will give an alarm prompt;

Power requirementsAC220V±10%，50Hz，1700W

Working temperature and humidity15℃~35℃； Relative humidity ranging from 15% to 80%;

Instrument size1100 mm x 950 mm x 780 mm (length x height x depth)

Hash VT-7900 Fully Automated Laboratory Water Quality Analysis System

Ordering Guide

1. Instrument host and accessories

Order NumberProduct Description

2.99.VT7900VT-7900 fully automatic laboratory water quality analysis system (COD cr)

2.99.901Instrument vehicle, compatible with instrument host, equipped with brake turning wheel

2. Pre made reagents

Order NumberRange (mg/L)Number of reagent tubes/tubeRemark

2415925-CN200-1500025(16mm)COD standard method (150 ℃, 2 hours)

2415915-CN200-15000150（16mm）

2125925-CN20-150025(16mm)

2125915-CN20-1500150（16mm）

2125825-CN3-15025(16mm)

2125815-CN3-150150（16mm）

2038225-CN15-15025(16mm)COD rapid method (165 ℃, 20 minutes)

2038215-CN15-150150（16mm）

2038325-CN100-100025(16mm)

2038315-CN100-1000150（16mm）

Hash Company was founded in 1947 as a professional technology enterprise specializing in water quality and hydrological monitoring instruments. Hash Company's products are widely used by users in fields such as drinking water, groundwater, surface water, municipal sewage, industrial sewage, semiconductor ultrapure water, pharmaceuticals/electricity, and other industrial water purification. Its entire product line covers laboratory qualitative/quantitative analysis, on-site analysis, flow analysis testing, and online analysis testing. The product has the characteristics of precise measurement, reliable operation, simple operation, low maintenance, and compact structure.

Our goal is to continue providing reliable instruments, complete pre made reagents, accurate and diverse testing methods, simple operation steps, and high-quality customer service to our customers, constantly improving the quality of our products to meet the ever-changing needs of our customers.

Hash China has established over 50 after-sales service outlets, 1 large maintenance service center, and more than 100 technical and experienced after-sales service engineers in major cities across the country. At the same time, utilizing comprehensive testing tools and relying on efficient expert systems, adhering to the customer first service philosophy, we provide convenient, thoughtful, and efficient services to the vast number of users in China.