- Conventional Pollution Online Monitoring Instrument
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- Special Parameter Online Monitoring Instrument
- Heavy Metal Online Monitoring Instrument
- Industrial Process Water Online Monitoring Instrument
- Anodic Stripping Voltammetry Heavy Metal Monitoring Instrument
- Laboratory Online Testing Instrument
- Water Treatment Process Instruments
Product Model: T8000-Cr
Measurement Method
Colorimetric determination of characteristic developing agent after acid oxidation and masking interference ions.
Multiple options are available
Timing measurement enables the instrument to be started every day at any time the user wants to monitor;
Isochronous measurement can automatically start the instrument for measurement every few hours at a fixed time interval every day;
Continuous measurement can realize automatic sample measurement one by one, which can be used for product acceptance and related technical certification;
Manual measurement can realize the user to start the measurement at any time, and can be used for field experiment comparison and equipment installation and debugging;
System Overview
The pre-treated water sample is injected into the colorimetric tank by the injection pump, and then the masking agent is added to eliminate the influence of interfering substances. Then the pH of the solution is adjusted, and the characteristic color developer is added under the appropriate pH condition for color reaction. The color change of the solution within the measurement range is proportional to the concentration of hexvalent chromium in the water sample. You can calculate the amount of hexavalent chromium in the water sample. If the total chromium is measured, the oxidizer is added to the automatic line after pretreatment to oxidize the chromium of various valence states into hexavalent chromium, and then the colorimetric determination is carried out.
Technical Parameters
| Measuring range: | (0-0.5/1/2/5) mg/L; |
| Measurement accuracy: | <10% when >1mg/L, <±0.1mg/L when <1mg/L; |
| Repeatability: | <5% when >1mg/L, <±0.5mg/L when <1mg/L; |
| Zero drift: | ±0.05mg/L; |
| Range drift: | ±10%; |
| MTBF: | ≥720 h/ time; |
| Actual water sample comparison: | ±10%; |
| Measurement time: | can be arbitrarily set, generally 10min; |
| Correction mode: | automatic timing correction or manual correction; |
| Reagent consumption: | only 3mL reagent is consumed per measurement; |
| Data transmission: | can provide 4-20 mA, RS232, RS485, GPRS, etc.; |
| Ambient temperature: | +5°C to +40°C; |
| Mechanical size: | 530×1340×390mm; |
| Weight: | about 45 kg; |
| Power supply: | (220±20) VAC /(50±0.5) Hz; |
| Power consumption: | about 100 W. |
System Features
· The water sample pretreatment device adopts maintenance-free design, which can ensure that the maintenance cycle of the pretreatment device exceeds half a year;
· The measurement process and results meet the relevant industry standards;
· The adjustable quantitative sampling device ensures that the instrument can accurately measure various water samples by adjusting the reagent dosage and sampling amount;
· The use of non-contact injection pump to avoid direct corrosion of reagent reagent pump, which can extend the life of core components and reduce user costs;
· Ultraviolet digestion technology can shorten the determination time of total chromium, and the single measurement time is less than 15min.
· All imported devices, analytical flow path design and reagent formulation ensure the measurement reproducibility, which can reach 5% at present.
· Automatic operation, no personnel on duty, can achieve automatic zero, automatic calibration, automatic measurement, automatic cleaning, automatic maintenance, self-protection, automatic recovery and other intelligent functions;
· On-line monitoring methods are diversified, which can realize manual measurement at any time, automatic timing measurement, automatic periodic measurement and other measurement methods.
