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Intelligent water-cooled COD reflux digestion instrument

NegotiableUpdate on 01/14
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Overview
The chemical oxygen demand (COD) of the intelligent water-cooled COD reflux digestion instrument is a necessary measurement item in water bodies such as surface water, industrial wastewater, and domestic sewage. It is an important indicator reflecting the pollution status of water quality by oxygen consuming substances and is also one of the key indicators for implementing total discharge control. The "Determination of Chemical Oxygen Demand in Water Quality - Dichromate Method" (HJ828-2017) is currently the most accurate and reliable detection method for determining water quality. However, the reflux digestion process of water samples is a process with strict temperature and time control, and poor control can lead to deviations in the analysis results.
Product Details

Intelligent water-cooled COD reflux digestion instrumentUsage description: Chemical Oxygen Demand(COD)It is a mandatory test item in water bodies such as surface water, industrial wastewater, and domestic sewage,It is an important indicator reflecting the pollution status of water quality by oxygen consuming substances, and is also one of the key indicators for implementing total emission control. And the "Determination of Chemical Oxygen Demand in Water Quality - Dichromate Method"(HJ828-2017)It is currently the most accurate and reliable detection method for measuring public health. However, the reflux digestion process of water samples is a process with strict temperature and time control, and poor control can lead to deviations in the analysis results.

Our company extensively listens to the opinions of users and refers to themHJ828-2017Method to launch this instrument. Replace high-power electric furnaces with temperature controlled electric heaters for heating, replace tap water cooling with automatic circulating water cooling, and achieve automatic temperature control and micro boiling state120The technical means of automatic countdown in minutes and automatic shutdown at the end of digestion have achieved the operation method in line with the national standard method, with one click operation, automatic digestion, energy saving and consumption reduction. It is easy to use and convenient to operate, while also avoiding non national standard measurement methodsCODThe technical controversy caused.

Intelligent water-cooled COD reflux digestion instrumentTechnical advantages:

Fully compliant with standard instrument design and based on all criteriaHJ828-2017Determination of Chemical Oxygen Demand for Water Quality The standard of "Dichromate Method" is metGB11914-89CODDetermination of Dichromate Method ", precise temperature control, thorough digestion, good parallelism;

One click start, automatic digestion throughout the process, unmanned operation only requires one click start. Each digestion unit automatically heats up to the set temperature according to the set program, automatically counts down for reflux, and automatically stops heating;

Uniform heating, thorough digestion, and visible operating parameters throughout the entire processPIDThe temperature control program ensures uniform heating and thorough digestion. The real-time heating temperature and remaining working time of each digestion unit can be monitored and changed in real time through a LCD screen.

Humanized design, easy to operate LCD touch screen, all individual operating parameters can be monitored in real-time throughout the process.

Comparative analysis:

name

Intelligent water-cooled reflux digestion instrument

ordinaryCODReflux digestion apparatus

execution standard

HJ828-2017

HJ828-2017

display mode

Color LCD display, displaying individual unit temperature and time separately

LCD (Liquid Crystal Display)

Heating method

Independent heating far-infrared ceramic heating furnace with stable performance and uniform heating

Integrated heating tube, uneven heating

cooling method

Automatic internal circulation water cooling method

Natural air cooling

Acid addition operation

The length of the reflux tube is appropriate, and adding acid is simple, convenient, and easy to operate

The reflux tube is relatively long, making acid addition slightly inconvenient

Reflux pipe design

Spherical reflux condenser tube

Umbrella shaped straight pipe reflux pipe

Backflow tube flushing

After digestion, rinse with pure water directly above the reflux tube, which is simple and easy to operate

The digestion unit needs to be removed from the host and rinsed with pure water.

temperature control accuracy

±1

±3

Dissolving unit

12Position can be individually controlled

12bit

heating power

2500WSingle hole power: ≤400W

1500W