Online Aniline Water Quality Auto-Analyzer
Model: ADG678
The ULT200 ultrasonic level transmitter provides reliable non-contact level measurement for liquids, solids and slurries. With advanced echo processing technology, it delivers high accuracy even in challenging industrial environments.
- 24-Hour Response Fast turnaround time
| Model | ADG678 | ADG679 | ADG675 | ADG676 | ADG677 |
| Test Method | Spectrophotometry | Phosphomolybdenum Blue Spectrophotometry | Potassium Persulfate Spectrophotometry | Ethylenediamine Spectrophotome | |
| Measuring Range | 0-1.5mg/L (Segmented measurement, extendable) | 0-10mg/L (Segmented, auto-ranging) | 0-50mg/L (Segmented measurement, extendable) | 0-100mg/L (Segmented measurement, extendable) | 0-2mg/L (Segmented measurement, extendable) |
| Detection Limit | ≤0.03mg/L | 0.05mg/L | — | ||
| Resolution | 0.001 | — | |||
| Accuracy | ±10% | Standard solution and water sample concentration ≤0.5 mg/L, not exceeding ±0.05 mg/L Standard solution and water sample concentration ≥0.5 mg/L, not exceeding ±10% | Standard solution and water sample concentration ≤2 mg/L, not exceeding ±0.2 mg/L Standard solution and water sample concentration ≥2.0 mg/L, not exceeding ±10% | ±10% | |
| Zero Drift | — | ±5% | |||
| Span Drift | ±5% | ±10% | |||
| Measurement Cycle | < 40 min | < 20 min | < 50 min (Digestion time configurable) | ||
| Ambient Temperature Stability | ±3% | — | |||
| Sampling Interval | Interval (adjustable), On-the-hour, or Triggered mode; configurable. | ||||
| Calibration Interval | Automatic (interval: 1-99 days, adjustable) or Manual (based on actual sample); configurable. | ||||
| Maintenance Interval | Maintenance Interval: > 1 month (approx. 30 min per session). | ||||
| HMI (Human – Machine Interface) | Touchscreen for display and command input. | ||||
| Self-diagnostics & Protection | Self-diagnosis of operational status. Data retained during exception or power loss. Auto-purge of residual reactants and auto-recovery after reset or power restoration. | ||||
| Data Storage | Data Storage: 5years. | ||||
| Input Interface | Digital (switch) inputs/outputs. | ||||
| Output Interface | 1x RS232 output， 1x RS485 output，2x Isolated 4-20mA analog outputs | ||||
| Operating Conditions | Indoor. Recommended: 5-28°C, Humidity ≤90% RH (non-condensing). | ||||
| Power Supply & Consumption | AC220±10%V，50±0.5Hz，≤150W，exclusive of sampling pump | ||||
| Dimensions | Dimensions (H x W x D): 1470 x 500 x 400 mm. | ||||
| Working Principle | Under acidic conditions (pH 1.5~2.0), aniline compounds undergo diazotization with nitrite. The resulting diazonium salt then couples with N-(1- naphthyl)ethylenediamine dihydrochloride to form a magenta dye, which is quantified by spectrophotometry. | Urea reacts with diacetyl monoxime and antipyrine to form a yellow complex. The absorbance is proportional to the urea concentration. | The sample is mixed with a catalyst and a strong oxidizing digesting agent. Under high-temperature, high-pressure acidic conditions, polyphosphates and other phosphorus compounds in the sample are digested and oxidized by the strong oxidant to produce phosphate ions. In thepresence of the catalyst, the phosphate ions form a colored complex in a strongly acidic molybdate solution. The analyzer detects the change in this color and converts it into an orthophosphate concentration output. The amount of colored complex formed is equivalent to the orthophosphate concentration. | After mixing with a masking agent, nitrate nitrogen (present as free ammonia or ammonium ions) reacts with a potassium persulfate chromogenic reagent in an alkaline environment and in the presence of a sensitizer to form a colored complex. The analyzer detects the change in this color and converts it into a nitrate nitrogen concentration output. The amount of colored complex formed is equivalent to the nitrate nitrogen concentration. | In a phosphoric acid medium at pH 1.8±0.3, nitrite reacts with sulfanilamide to form a diazonium salt, which then couples with N-(1 – naphthyl)ethylenediamine dihydrochloride to produce a red dye. The maximum absorption of this dye occurs at a wavelength of 540 nm. |
| Certifications | Software Copyright Registration | ||||
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