Water quality monitoring system of Online TN Analyzer – HATN-2000

Online TN Analyzer, HATN-2000, is a measuring equipment that quantifies total nitrogen by using the UV absorption spectrophotometry method. By oxidizing various nitrogenous compounds into nitrate nitrogen through oxidative degradation, it is quantified by using the UV absorption spectrophotometry. HATN-2000 has a simple configuration that has adopted the 7-port control valve to enable inflow of fixed quantity of sample and reagent for the purpose of accurate measurement. It has less clogging due to the use of large tubes, and it can automatically check the supply of sample and reagent.

Characteristics

HATN-2000

Simple structure：7-port control valve

Improved measurement accuracy

Compliance with the Standard Water Pollutant Testing Method

Economical maintenance expenses

Status condition display

Functions that separately discharges hazardous
waste liquid and general liquid (Option)

Principle

In the pretreatment step, by applying alkaline potassium persulfate and high heat to the sample, organic and inorganic nitrogen compound is turned into nitrate ions by using oxidative degradation. After cooling, the acidity is lowered and absorbance is measured to quantify the total nitrogen. The absorbance of nitrate ion is measured at 220nm, and the interference factor is compensated at 275nm.

Specification

• • Measurement item

Total Nitrogen (TN)

• • Measurement method

UV Absorption photometry

• • Measurement range

0~100mg/L (Adjustable)

• • Wavelength

220nm (275nm for compensation)

• • Measurement interval

60 minutes

• • Accuracy

±2% F.S.

• • Reproducibility

±2% F.S.

• • Linearity

±3% F.S.

• • Zero/Span drift

±2% F.S.

• • Oxidation method

120°C persulfate thermal oxidation

• • Calibration

Auto/manual calibration by standard solution

• • Sample/Reagent measurement method

Photo sensor pulse control

• • Sample/Reagent distribution method

7-port distribution control method (Fixed quantity injection with multi-channel valve system)

• • Operation system

Windows 7 (CPU process) or more

• • Output

TCP/IP, DC 4~20mA, RS-232C

• • Status display

Normal operation, on calibration, error

• • Display

Color LCD 10.4″ (Touch screen)

• • Power

AC 220V, 50/60Hz

• • Power consumption

Average 150W (Maximum 450W)

• • Voltage regulation

3% or less

• • Data storage capacity

HDD 100G or more

• • Data output

USB terminal

• • Enclosure / Size

Steel, IP55 / 600(W) x 662(D) x 1700(H) mm

• • Operating humidity

RH 95% or less

Application

Application Field

Surface water monitoring

• • River, lake, river water quality
  • Waterworks facilities (intake station and Water plant, etc.)

Water quality TMS

• • Sewage treatment plant, Wastewater treatment plant
  • Wastewater discharging facility, Rural sewage treatment facility, etc.

Process control, etc.

• • STP process management,
  • IWWTP process management, etc.