This monitor operates autonomously under ‌long-term unattended and continuous operation‌ based on field configurations. It is widely applicable to industrial pollutant discharge wastewater, industrial process wastewater, industrial sewage treatment plants, municipal sewage treatment plants, and similar scenarios. Depending on the complexity of on-site testing conditions, optional preprocessing systems can be integrated to ensure ‌reliable testing processes‌, ‌accurate results‌, and compliance with diverse operational demands.

>>Principle

The product utilizes the ‌dithizone spectrophotometric method‌ for cadmium determination. After mixing the water sample with conditioning agents, cadmium reacts with the indicator in an acidic environment to form a colored complex. The analyzer detects the color intensity change, converts it into cadmium concentration values, and outputs the results. The amount of colored complex generated is proportional to the cadmium concentration.

>>Technical Parameter

‌Test Method‌	Dithizone Spectrophotometric Method
‌Measuring Range‌	0~2mg/L (segmented measurement, expandable)
Detection Limit	≤0.02mg/L
Resolution	0.001mg/L
Accuracy	±5%
‌Repeatability‌	≤±5%
‌Drift (24h)‌	Zero drift: ±5% Span drift: ±10%
‌Measurement Time‌	<50min (digestion time adjustable)
‌Measurement Modes‌	Adjustable time interval, fixed time point, or triggered measurement
‌Calibration Modes‌	Automatic calibration (1~99 days adjustable) Manual calibration based on actual water samples
‌Maintenance Cycle‌	1 month per session; ~30min per maintenance
‌Human-Machine Interface‌	Touchscreen display and command input
‌Self-Diagnosis & Protection‌	Self-diagnoses operational status; retains data during anomalies/power outages Automatically clears residual reactants and resumes operation after reset/power recovery
‌Data Storage‌	5-year data capacity
‌Input Interface‌	Digital input
‌Output Interfaces‌	1× RS232, 1× RS485 2× 4~20mA analog outputs
‌Operating Environment‌	Indoor use; recommended temperature: 5~28℃, humidity ≤90% (non-condensing)
‌Power Supply‌	Voltage: AC 220±10% V Frequency: 50±0.5 Hz Power: ≤150W (excluding sampling pump)
‌Dimensions‌	520H × 370W × 265D (mm)

Tags:

Online Water Quality Monitor

Multi Parameter Water Quality Monitor

PH ORP Meter

Conductivity Meter

Dissolved Oxygen Meter

Ion-selective Meter

Residual Chlorine Meter

Turbidity Analyzer

TSS Analyzer

COD Analyzer

Optical Water Quality Sensor

Ultrasonic Meter

Water Quality Monitoring Accessories

Online Water Quality Monitor

Drinking Water Monitoring

Industrial Wastewater Monitoring

Aquaculture water Quality Monitoring

Boiler Water Monitoring

Multi Parameter Water Quality Monitor

PH ORP Meter

PH ORP Transmitter And Sensor

Portable PH ORP Meter

Desktop PH ORP Meter

Conductivity Meter

Conductivity Transmitter And Sensor

Portable Conductivity Meter

Desktop Conductivity Meter

Dissolved Oxygen Meter

Dissolved Oxygen Transmitter And Sensor

Portable Dissolved Oxygen Meter

Desktop Dissolved Oxygen Meter

Ion-selective Meter

Fluoride Analyzer

Chloride Analyzer

Calcium Analyzer

Ammonia Nitrogen Analyzer

Nitrate Nitrogen Analyzer

Residual Chlorine Meter

Disinfectant Water Monitoring

Turbidity Analyzer

TSS Analyzer

COD Analyzer

Optical Water Quality Sensor

Ultrasonic Meter

Liquid Level Meter

Sludge Interface Meter

Water Quality Monitoring Accessories

products details

Cadmium Online Water Quality Analyzer

Online Water Quality Monitor

Multi Parameter Water Quality Monitor

PH ORP Meter

Conductivity Meter

Dissolved Oxygen Meter

Ion-selective Meter

Residual Chlorine Meter

Turbidity Analyzer

TSS Analyzer

COD Analyzer

Optical Water Quality Sensor

Ultrasonic Meter

Water Quality Monitoring Accessories

Online Water Quality Monitor

Drinking Water Monitoring

Industrial Wastewater Monitoring

Aquaculture water Quality Monitoring

Boiler Water Monitoring

Multi Parameter Water Quality Monitor

PH ORP Meter

PH ORP Transmitter And Sensor

Portable PH ORP Meter

Desktop PH ORP Meter

Conductivity Meter

Conductivity Transmitter And Sensor

Portable Conductivity Meter

Desktop Conductivity Meter

Dissolved Oxygen Meter

Dissolved Oxygen Transmitter And Sensor

Portable Dissolved Oxygen Meter

Desktop Dissolved Oxygen Meter