Total Chromium Online Analyzer Diphenylcarbazide Spectrophotometric Method 0-100mg/L OEM Range RS-232 4-20mA RS-485 Output Total Chromium Water Quality Monitor

This analytical method is applicable to wastewater containing total chromium concentrations within the range of 0–100 mg/L.

• Data retention during abnormal alarms or power outages.
• Touchscreen display and command input.
• Automatic discharge of residual reactants and resumption of operation after power restoration or system reset.

Unique Design: This product features a distinctive design that ensures lower failure rates, reduced maintenance requirements, minimal reagent consumption, and higher cost-effectiveness compared to similar products.

• Enables flexible reagent sampling timing and diverse channel configurations.
• Minimizes dead volume for easy maintenance and extended service life.

• Utilizes a visual photoelectric system for precise reagent measurement, eliminating quantitative errors caused by peristaltic pump tube wear.
• Achieves accurate micro-dosing at 0.7 mL per dose, significantly reducing reagent usage.

• Employs a peristaltic pump with negative pressure suction, creating an air buffer zone between reagents and the pump tube to prevent corrosion.
• Simplifies and enhances flexibility in reagent mixing.

• Operates under high-temperature and high-pressure conditions to accelerate reactions.
• Eliminates corrosion risks from volatile gases in open systems.

• Uses imported modified PTFE (polytetrafluoroethylene) transparent tubing with an inner diameter > 1.5 mm to minimize clogging by particulate matter in water samples.

The water sample is mixed with a strong oxidizing agent for digestion, during which trivalent chromium is oxidized to hexavalent chromium. Under acidic conditions and in the presence of an indicator, hexavalent chromium reacts with the indicator to form a colored complex. The analyzer detects this color change, converts the variation into a total chromium concentration value, and outputs the result. The amount of colored complex formed corresponds to the total chromium content in the sample.