Hexavalent Chromium Analysis

1.Hexavalent Chromium Analysis Principle

Hexavalent Chromium Analysis is used to measure hexavalent chromium in water and was developed to determine the hexavalent chromium content of groundwater and industrial wastewater.This product is measured by diphenylcarboyldihydrazine spectrochromic method.After mixing the water sample with the regulator, the hexavalent chromium reacts with the indicator in the presence of an acidic environment and an indicator to form a chromatic complex.The analyzer detects the change of this color and converts this change into the hexavalent chromium value and outputs it.The amount of chromic complex produced is equivalent to the amount of hexavalent chromium.

2.Features of Hexavalent Chromium Analysis

The new optoelectronic quantitative technology is not affected by interference such as large chromaticity, many suspended objects, and many bubbles.It has high reliability and accuracy and strong anti-interference ability.

High detection accuracy, low measurement limit, and low long-term drift of the instrument.

It has one-click self-test function and self-diagnosis function.

It adopts a single-channel high-integrated valve set, making maintenance and cleaning simple and fast.

All-weather networking function, monitoring the operating status of the instrument anytime and anywhere.

It has alarm function, quality control function and counter control function.

It has automatic cleaning function and automatic calibration function.

It has full-point measurement, interval measurement and external control measurement.

It works automatically after power failure recovery.

Automatic prompts and automatic reset functions for faults and reagents (samples).

It has fault logging function.

Can save historical data for more than 3 years.

Satisfies the separation of cleaning liquid and waste liquid

3.Hexavalent Chromium Analysis Technical Parameters

Measurement method: diphenylcarboyldihydrazine spectrophotochrome

Measuring range: 0-2 mg/L; 0-20 mg/L; range can be customized

Display error: ≤±8% detection limit: 0.01mg/L

Repeatability: ≤±5% Waste liquid volume: 6mL/time

Memory effect: ≤±0.3mg/L Actual water sample comparison: When the concentration is ≤0.400mg/L, comparison

When the detection error is ≤0.06mg/L, concentration is >0.400mg/L

Comparative detection error ≤±15%

Constant temperature time: 360 seconds Voltage stability: ≤±5%

Measurement cycle: 25 minutes Calibration cycle: any specified time

Maintenance cycle: ≥720h/time Maintenance workload: <2 hours/month

Reagent consumption: 3 months/500ml display output: configured with a 10.1-inch color LCD touch screen

Color rendering temperature: The recommended temperature is 125℃, which can be set according to the actual water sample condition

Data export: The measured value can be imported into the USB drive and saved in the USB drive.

Signal output: RS485/RS232/USB interface/standard 2-channel 4-20mA output/standard two-channel switching input and output

Environmental requirements: Indoors with controllable temperature, recommended temperature (5-28℃), humidity ≦90% (no condensation)

Power supply and power: (220V±22) V/AC, (50±0.5Hz), 5A, 150W