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Special Parameter Online Monitoring Instrument
Cyanide in Water Online Monitor
product details

Product Model: T8000-CN


Measuring Method


The pyridine barbituric acid colorimetric method follows the standard specifications GB 7486-87 and HJ484-2009.


System Overview


The preprocessed water sample is injected into a special reactor by an injection pump to react with strong acidic reagents, allowing various forms of cyanide in the solution to exist as cyanide ions. After neutralizing the excess acid, the pH of the solution is adjusted. At the same time, a masking agent is added to eliminate the influence of interfering substances on the measurement. Then, a characteristic colorimetric agent is added for colorimetric reaction. Within the measurement range, the degree of color change in the solution is directly proportional to the concentration of cyanide in the water. By measuring the degree of color change, the cyanide content in the effluent can be calculated. The instrument can also be used for measuring total cyanide in water by modifying the testing process and replacing reagents.


Measurement Principle


The characteristic of using the expulsion method is to eliminate the matrix interference of the water sample. Different water samples have different impurity contents in the water, and their impurities will greatly affect the colorimetric measurement. T8000-CN uses a unique expulsion method to transfer the cyanide in the water sample into a clean colorimetric cell for absorption measurement, and its measurement is not affected by any interference of the water sample matrix, thereby improving accuracy.


Technical Parameters


Measuring range: (0-1) mg/L cyanide;
Measurement accuracy: <10%;
Measurement repeatability: <5%;
Zero drift: ±5%;
Range drift: ±10%;
MTBF: ≥720 h/ time;
Actual water sample comparison test: 80%;
Relative error: ±15%;
Linearity: ±10%;
Measurement time: 5-15min;
Correction mode: automatic timing correction or manual correction;
Reagent consumption: only 4mL reagent is consumed per measurement;
Sampling inside the instrument: using injection pump;
Data transmission: Provide 4-20 mA, RS232, RS485 and other data transmission interfaces at the same time;
Ambient temperature: +5°C to +40°C;
Mechanical size: 530×1340×390mm;
Weight: approximately 45 kg;
Power supply: (220±20) VAC /(50±0.5) Hz;
Power consumption: approximately 100 W.


System features


Provide Multiple Measurement Methods to Choose From

· Timed measurement can enable users to start the instrument for measurement at any time they want to monitor every day;

· Isochronous measurement can automatically start the instrument every few hours at fixed time intervals every day for measurement;

· Continuous measurement can achieve automatic sample measurement one after another, which can be used for product acceptance and related technical certification;

· Manual measurement can enable users to start measurement on-site at any time, and can be used for on-site experimental comparison and equipment installation and debugging;


Reduce Workload

The preprocessing device has a self maintenance function, thereby reducing the maintenance workload of users;


The Reaction Time Can Be Adjusted

The chemical reaction time can be adjusted, and the measurement process and results meet relevant standards;


Adjustable Quantitative Sampling Device

Ensure that the instrument is prepared to measure various water samples by adjusting the reagent dosage and sampling amount;


Cost Reduction

The use of reagents adopts non-contact injection pumps to avoid direct corrosion of reagents on the reagent pump, which can extend the service life of core components and reduce user usage costs;


High Reproducibility

The design of imported devices and analytical flow paths, as well as the formulation of reagents, ensure measurement reproducibility, with a current measurement reproducibility of up to 5%;


Fully Automatic Operation

No personnel on duty, can achieve automatic zero, automatic calibration, automatic measurement, automatic cleaning, automatic maintenance, automatic protection, automatic recovery and other intelligent functions;


Diversified Online Monitoring Methods

It can achieve measurement methods such as manual measurement at any time, automatic timed measurement, and automatic periodic measurement;


Automatic Liquid Leakage Alarm Function

When there is a reagent leak, the instrument automatically alarms and prompts the user to perform maintenance.