Water quality monitoring system of Online NH3-N Analyzer – HANH-4000

Online Ammonia Analyzer, HANH-4000, is a measuring equipment designed to enable measurement of ammonia nitrogen by using the colorimetric method. The color formation reagent that is used by HANH-4000 is Hypochlorite and Salicylate substances, which are not harmful unlike the indophenols method that uses phenol. HANH-4000 continuously measures the ammonia nitrogen concentration in the water in accordance with the Standard Water Pollutant Testing Method, and it enables continuous automatic measurement of water quality in a variety of application areas such as drinking water quality management, wastewater treatment facility control, and groundwater.

Characteristics

HANH-4000

Distribution of Sample and Reagent Using Multi-channel Valves

• • Quantitative distribution of sample and reagent by using patented multi-channel valve system

Accuracy

• • Use of high-performance micro-pulse control pump
  • Accurate measurement of sample and reagent through correction per channel

Immediacy & Expandability

Immediacy

• • • Response within 15 minutes

Expandability

• • • Enables various water quality measurements using colorimetric method through change of only reagent and wavelength, if necessary

Convenience in operation

Convenience

• • • 3-point calibration and auto calibration function
    • Easy and simple operation, self diagnosis

Operation

• • • Easy maintenance by simplification of the flow channel
    • Easy operation by private-labeled operation program

Principle

When the sample flows in to the analyzer, the ammonia nitrogen in the sample becomes NH₂Cl under the Hypochlorite conditions, and after the reaction with Salicylate, 5-Aminosalicylate is colored formed with Sodium Nitroferricyanide and measured at 660nm. The absorption spectrophotometry using Salicylate method is almost same as the indophenols method, but because the harmful phenol reagent is replaced with Salicylate, safe measurement is possible.

Specification

• • Measurement item

Ammonia-Nitrogen (NH₃-N)

• • Measurement method

Absorbance spectrophotometry (Salicylate colorimetric)

• • Measurement range

0~20mg/L (Adjustable)

• • Wavelength

660nm

• • Measurement interval

15 minutes (Adjustable)

• • Detection limit

0.01mg/L F.S.

• • Accuracy

2% F.S.

• • Reproducibility

2% F.S.

• • Linearity

3% F.S.

• • Zero/Span drift

2% F.S.

• • Calibration

Auto/manual calibration by standard solution

• • Detection method

Photodiode detector

• • Sample/Reagent measuring method

Step motor 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 LED 10.4″ (Touch screen)

• • Power

AC 220V, 50/60Hz

• • Power consumption

Average 70W

• • Voltage regulation

3% or less

• • Data storage capacity

HDD 100G or more

• • Data output

USB terminal

• • Enclosure / Size

Steel, 1.5T(Except paint) / 645(W) x 439(D) x 1600(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.