Shen ChangHongShen ChangHong

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laboratory analytical instruments in China.

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Portable Water Quality Analyzer (COD、NH3N、TP、TN )

PWN-840A

[Product Overview]

Hand portable design, supporting the measurement of multi parameter COD, ammonia nitrogen, total phosphorus and total nitrogen.

[Application Area]

Applicable to outdoor and on-site use.
Product Details
Custom Matching


Technical Indicators



【Host】
Measurement range: COD NH3N TP TN
5~2000mg/L 0.02 ~ 25mg / L 0.00~10mg/L 0.05~150mg/L
Indication error:  ≤ ± 5 % ≤±3% (F.S) ≤±5% (F.S) ≤±5%
Repeatability: ≤3% Anti-chlorine interference:  ≤2000mg/L (COD measurement)
Temperature control accuracy:  ±0.5 °C Wavelength range:  COD (420nm and 610nm), ammonia nitrogen (420nm), total phosphorus (700nm), total nitrogen (340nm)
Temperature control time: adjustable from 1 to 999min Temperature control system: set at room temperature ~180 °C, COD digestion temperature is 165 °C, total phosphorus digestion temperature is 120 °C, total nitrogen digestion temperature is 125 °C.
Digestion time:  COD is 15 min, total phosphorus total nitrogen is 30 min Optical stability: the instrument absorbance value drifts less than 0.002A within 20min
Batch volume: 4 water samples (or 16 water samples)  Dimensions:  COD measuring instrument 80mm × 230mm × 55mm;Digestion instrument 105mm × 160mm × 90mm
Weight:  Host 0.5kg digestion instrument: 1kg Host power consumption:  current <40uA; digestor power consumption: <65W

Normal use conditions:

Ambient temperature: 5 to 40 ° C Relative humidity:  ≤85%
Power supply:  Main unit: Built-in lithium battery;

Digestion instrument: car cigarette lighter, portable lithium battery or 220V power supply

No significant vibration and electromagnetic interference, avoid direct sunlight.



Instrument Features



1. The digester is separated from the analyzer, which does not affect the measurement accuracy. The temperature PID automatically controls temperature and timing.

2. Using high-performance, low-power 16-bit single-chip system, the standby time of the instrument can be more than 6 months.

3. The instrument is small and convenient for on-site measurements. Supporting a variety of power supply methods: including automobile cigarette lighter, high-capacity portable lithium battery and 220V power supply, to get rid of the trouble of not being able to detect the conventional power source in the field.

4. Using imported cold light source, equipped with narrow-band filter system,the optical stability is very strong.

5. LCD large screen Chinese display, easy to operate.

6. Data will not lose even when power is cut off.

7.30 standard curves and 199 measurements can be saved (including residual chlorine value, absorbance value and light transmittance with time label of year, month, day, hour, minute and second).

8. With USB port, which can be connected to computer for records reading or printing.

9. The main engine shell is made of molded ABS material and IP65 design, with good anti-corrosion, waterproof and dustproof performance.

10.The digester can be equipped with portable lithium battery with high capacity, which can satisfy the measurements of water samples in large quantities

11. High - strength suitcase, smart, strong, easy to carry.



Packing List



Name Quantity Name Quantity
Host 1 1 digestion instrument
1 portable case 40 digestion colorimetric tubes
1 tube rack 10 Digestion Tubes
Cod reagent 1 set Ammonia nitrogen reagent 1 set
1 set of total phosphorus reagent 1 set of total nitrogen reagent
1 main charger 1 AC / DC converter (220V / 12V) of digestion instrument
One connecting line of automobile cigarette lighter USB line 1
1 digestion shield 1 product certificate
1 operation manual 1 warranty card