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National standard spectrophotometric water quality online monitoring instrument
Residual chlorine (total chlorine) online monitor
Online nitrate monitor
Online phosphoric acid water quality monitoring instrument
Online silica monitor
Online fluoride monitoring instrument
Hydrazine online monitor
CODcr Water Quality Online Monitor
Ammonia nitrogen water quality online monitor
Online monitoring instrument for total nitrogen water quality
Online monitoring instrument for total phosphorus water quality
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The principle of the total chromium online monitor is mainly based on spectrophotometry. Under acidic conditions, various valence states of chromium in the water sample (including trivalent and hexavalent chromium) are first uniformly oxidized to hexavalent chromium by oxidizing agents (such as potassium permanganate or potassium persulfate). Subsequently, hexavalent chromium complexes with specific chromogenic agents (such as diphenylcarbodhydrazine), forming a colored complex. The color depth of this complex is proportional to the total chromium content in the water sample. By measuring the absorbance of the complex at a specific wavelength and using the linear relationship between absorbance and total chromium content, the instrument can accurately calculate the total chromium concentration in the water sample. The entire process is highly automated, enabling continuous, real-time monitoring of water quality.
Technical Specifications |
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Measurement methods | Spectrophotometric method for potassium persulfate oxidation of diphenylcarbazid |
Implement standards | HJ798-2016 |
Measurement range | 0.04~5.00mg/L (range customizable) |
Measurement cycle | 60 minutes |
Precision | ≤ 5% F.S. Use a 50% range standard solution |
Application industries | Industrial water process monitoring in the power, chemical, and steel industries, as well as water quality monitoring of wastewater, drinking water, and surface water. |
Automatic cleaning | Yes |
Ambient temperature | 5~28℃ |
Relative humidity | 5~95% |
Sample requirements | Turbidity <50 NTU, maximum particulate size 100 μm< 0.1 g/L |
Sampling method | Through an external overflow container |
Reagent consumption | 260 or 500 times |
Power supply | 110-240 VAC、4A，50/60 Hz |
Maximum power consumption | 150 VA |
Analog signal output | 4-20 mA, maximum load of 500Ω |
Digital signal output | Supports RS485 (Modbus RTU) / Ethernet (Modbus TCP) |
Protective enclosure | IP67 |
Dimensions (H*D*W) | 690*370*400mm |
Weight | 30kg |
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Address：No. 267, 2nd Floor, East District, Zhimao City, Honghe Road, Jinghe Street, Tengzhou City, Zaozhuang City, Shandong Province
Email：mzd18363281129@163.com
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