Under certain pH conditions, fluoride ion reacts with acetate and chromogenic agent to produce a fixed-color complex, which has a maximum absorption at a certain wavelength, and the absorbance is proportional to the concentration of fluoride ion.

Under certain pH conditions, fluoride ion reacts with acetate and chromogenic agent to produce a fixed-color complex, which has a maximum absorption at a certain wavelength, and the absorbance is proportional to the concentration of fluoride ion.

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: 0-10 mg/L.

3 Accuracy: no more than ±10%.

4 Repeatability: no more than ±10%.

5 Measurement period: The minimum measurement period is 20 minutes. According to the actual water sample, the digestion time can be arbitrarily modified within 5 to 120 minutes.

6 Sampling cycle: time interval (10～9999min arbitrarily adjustable) and hourly measurement mode.

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

8 Maintenance cycle: generally, once a month, each time is about 30 minutes.

9 Reagent consumption: less than 0.35 RMB/sample.

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

11 Environment requirements: indoor with adjustable temperature, recommended temperature +5～28℃; humidity ≤90% (no condensation).

12 Power supply: AC220±10% V, 50±10% Hz, 5A.

13 Others: abnormal alarm and power failure will not cause data loss; touch screen display and command input; after abnormal reset and power on after power failure, the instrument will automatically discharge the residual reactants in the instrument and restores to working state.