Overview
WD9204B Portable water quality tester is a professional testing equipment produced by JINGQI. It adopts the separate design of digestion instrument and measuring instrument to effectively ensure the measurement accuracy. The instrument has the measurement function of ammonia nitrogen and total nitrogen. Measurement range is 0.02~ 25mg/L and 0.05~ 100mg/L, respectively, suitable for on-site rapid water quality analysis.
Features
1. The digestion instrument and the measuring instrument are designed separately and do not affect each other to ensure the Measurement accuracy. The temperature is automatically controlled and timed by PID.
2. Adopting a high-performance ultra-low-power 16-bit microcontroller, the standby time of the instrument can reach more than 6 months.
3. The operation process is time-saving and efficient.
4. Cold Illuminant, Narrow Band Interference Optical inspection system, Optical inspection Stability.
5. Equipped with data power-off protection function.
6. Can store 30 standard Linear dispersions and 199 Measured values, absorbance values and light transmitance data with time labels (year, month, day, hour, minute, second).
7. Equipped with a USB port, it can be connected to a computer to read records or print stored data.
8. The main cabinet is made of molded ABS material, IP65 Protection Rating design, excellent waterproof and dustproof performance.
Principle
The instrument works based on the Spectrophotometric method, spectra-trophotometry principle. After the water sample is digested at a specific temperature and time in the digestion instrument, the substance to be tested reacts with the Reagent to form a colored compound. The cold Illuminant in the meter emits light of a specific wavelength, which is irradiated to the sample through a narrow-band interference Optical inspection system. Absorbance or light transmitance is detected, and the concentration of the substance to be tested is calculated according to the built-in standard Linear dispersion.
Applications
Water quality monitoring, environment testing, sewage treatment, scientific research experiments
Standards
Ammonia Nitrogen Indication Error ：≤ +/- 3% and 0.2, Total Nitrogen Indication Error ：≤ +/- %, Repeatability: ≤ 3%, Chlorine Interference: ≤ 2000mg/L (COD), Optical inspection Stability: < 0.002A/20min
Steps
1. Prepare the water sample to be tested and the required Reagent.
2. Add the water sample and Reagent to the digestion tube and put it into the digestion instrument for digestion.
3. After digestion is complete, remove the sample and chill down.
4. Put the processed sample into the tester sample chamber.
5. Select the corresponding test item (e.g. ammonia nitrogen or total nitrogen) on the instrument.
6. The instrument automatically reads and displays the measurement results.
7. Data can be exported or printed by connecting to the computer through the USB port.
Notice
• Please read the manual carefully before use and follow the operation steps.
• Reagent is within the valid period and stored correctly.
• Please pay attention to high temperature during the digestion process to avoid burns.
• Before measurement and during measurement of different samples, make sure the Cuvette is clean.
• The instrument should be stored in a drying, non-corrosive gas environment.
• Regularly calibrate the instrument to ensure measurement accuracy.
When connecting to a computer, please ensure stable data transmission.
