Digest the water sample by heating with potassium permanganate at 95鈩? After all mercury compounds are converted to divalent mercury, the excess oxidant is oxidized and reduced with reductant. Under certain pH conditions, mercury ions and the chromogenic agent form a complex, and the absorbance is detected at a specified wavelength and converted to the concentration of mercury.

Characteristics:

l Valve components selection. It can select the reagent sampling sequence, with flexible channels, variable functions, minimum dead volume, easy maintenance, long service life and other advantages.

l Printing function. It can be connected to a printer (optional order) to print the measured data in time.

l It adopts 7-inch touch screen, with simple operation interface, easy for users to learn, operate, and maintain.

l Super large data storage capacity. It can realize storage of historical data for no less than 5 years (measurement interval is 1 time/1h), which greatly meets the needs of customers.

l Automatic leakage alarm function. When reagent leakage occurs, the instrument will automatically alarm to remind the user to perform maintenance.

l Light signal recognition function to ensure high accuracy of quantification.

l Simple and convenient chemical reagents maintenance. The reagents can be replaced once a month, which greatly reduces the maintenance of the user.

l U disk one-click upgrade. The software update is much easier.

1 Method basis: spectrophotometry.

2 Measuring range: 0锝?.0mg/L.

3 Accuracy: 卤10% or 卤0.0005mg/L (the larger of the two).

4 Repeatability: 10% or 0.0005mg/L.

5 Measurement period: The minimum measurement period is 30 minutes.

6 Sampling cycle: time interval (10锝?999min arbitrarily adjustable) and hourly measurement mode.

7 Calibration cycle: adjustable at any interval any time from 1 to 99 days.

8 Maintenance cycle: 1 time/month.

9 Reagent consumption: less than 0.1 RMB/sample.

10 Display: 10-inch color screen, 1024*600, 16.77 million true colors.

11 Output: RS-232, 4-20mA (optional).

12 Communication protocol: Modbus RTU, new national standard protocol, dynamic control protocol, and others.

13 Environment requirements: indoor with adjustable temperature, recommended temperature +5锝?8鈩傷 humidity 鈮?0% (no condensation).

14 Power supply: AC220卤10% V, 50卤10% Hz, 5A.