Measurement steps of Hengaode multi parameter water quality nitrate ion two in one water quality meter

Usually refers to online analytical equipment that can simultaneously detect nitrate and nitrite, and its operating principle is mainly based on photometric or spectroscopic analysis techniques. The following is an overview of its core working principle:

‌Detection Principle‌The instrument measures the absorption intensity of specific wavelengths of light by nitrate and nitrite in water samples through optical sensors. Nitrates absorb specific wavelengths of light under ultraviolet light, while nitrites react with colorants to produce colored compounds, which are then measured for absorbance using colorimetric methods.‌

2 For example, UV spectroscopy utilizes the absorption characteristics of nitrate molecules towards ultraviolet light, based on the Lambert model-Bill's law (absorbance is proportional to concentration) calculates concentration;‌3 The detection of nitrite is often carried out by colorimetric method, which measures the optical density after reagent coloration.‌

‌Hengaode InstrumentMeasurement steps‌The water sample is first subjected to pre-treatment (such as filtration or adjustment)pH）Then enter the reaction chamber. For nitrate, it may be directly irradiated with ultraviolet light source and the transmitted light intensity detected; For nitrite, add a color developer (such asGriessReagents are used for color reaction.‌4 The built-in algorithm of the instrument (such as dual parameter calibration) will synchronously process the data of two ions to avoid cross interference.‌

‌Automation function‌These types of instruments typically support fully automated operation, including automatic sampling, automatic calibration, automatic cleaning, and fault self diagnosis, ensuring the stability of continuous monitoring.‌

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5 For example, by controlling the mixing of water samples and reagents through an injection pump, and then reading the signal with a photometer and converting it into concentration values.‌

‌Calibration and maintenance‌Before operation, a blank calibration (using distilled water as a reference) is required, and the curve is regularly calibrated with a standard solution.‌

6 Daily maintenance includes cleaning optical components, replacing reagents, and checking sensors to maintain accuracy.‌

‌Application scenarios‌Suitable for real-time monitoring in fields such as drinking water, sewage treatment, and aquaculture, it can quickly provide concentration data of nitrate and nitrite to help evaluate water quality safety.‌

In practical operation, users need to follow the instrument manual for installation, calibration, and sample processing to ensure accurate results. If specific models are involved, it is recommended to refer to the detailed process in the equipment manual