Shanghai Jingqi Portable Water Quality Meter (Total Nitrogen) WD9103B, Shanghai Jingqi Instrument Co., Ltd. (CAT#: STEM-AI-0945-YJL)

Shanghai Jingqi Portable Water Quality Meter (Total Nitrogen) WD9103B, model WD9103B is manufactured by Shanghai Jingqi Instrument Co., Ltd.
The portable rapid water quality analyzer is an integrated intelligent instrument designed by our company for monitoring and supervisory personnel to measure various chemical indicators of water samples on site. The instrument has the characteristics of automatic PID temperature control, dual liquid crystal display, AC and DC, automatic zero adjustment, direct reading of concentration, curve storage, automatic printing and so on. The instrument is easy to operate, man-machine interactive operation. Users can apply this product without complicated professional knowledge.

Digestion quantity: ≤4
Temperature indication error: ≤±1°C
Uniformity of temperature field: ≤2℃
Digestion time indication error: ≤±2%
Curve parameters: 100 measurement curve parameters can be set
Calibration: 1~7 point calibration mode, automatic calibration curve value
Clock: built-in real-time clock, the monthly cumulative error of the real-time clock is less than 10 seconds
Record storage: 10,000 measurement results can be stored, and the data will not be lost when the power is turned off
Printing: built-in printer, print measurement results at any time
Communication method: RS232, the measurement results can be uploaded to the computer, which is convenient for users to analyze statistically
Display: 240*128 large-screen blue backlight display, Chinese operation interface
Ambient temperature: (5 ~ 40) ℃; Ambient humidity: relative humidity < 85% (non-condensing)
Working power supply: AC220V±10% / 50Hz, DC 16V lithium battery
Dimensions: 400*300*200mm
Weight: 8kg
Total Nitrogen
Determination method: persulfate digestion colorimetric method
Measuring range: 0～100 mg/L Measuring error: ≤±5%
Digestion temperature: 125± 1°C
Digestion time: 30 minutes

Dual LCD display, pure Chinese operation interface, user-friendly design, friendly human-computer interaction interface.
Unique optical circuit design, strong anti-interference ability, high precision and good stability of measurement data.
Automatic constant temperature control system, PID adjustment technology, constant temperature and high precision in the digestion process.
The instrument can automatically correct the measurement curve, automatically adjust zero, and is easy to operate.
The measurement and digestion systems are designed separately, controlled by independent power sources, and the operation process can be carried out separately without affecting each other.
The instrument has a built-in DC power supply, powered by a lithium battery, which can realize heating, digestion and colorimetric determination of multiple batches of water samples.
The measurement light source adopts a cold light source, and the life of the light source lamp is as long as 100,000 hours, with small drift and long life.
The instrument has a built-in real-time clock, and each measurement record has a measurement time stamp, which is convenient for statistics and query.
With a data output interface, it can be connected to a computer, and the measurement data can be transmitted to the computer.
The instrument comes with a thermal printer, which can directly print measurement data and historical data.
Suitcase design, light weight, beautiful machine, easy to carry.

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