AKF-1 Carle water meter operating procedures

2016/09/05 08:51 I 阅读：64

1 、boot: boot before the inspection of the pipeline, bottle cap and dry pipe and other parts are connected, reagent bottle and solvent bottle of Carle's reagent and anhydrous methanol is sufficient. And then open the instrument back to the power switch, the instrument self-test after the input operator number (no more than 3 digits of any value), press [confirm] key to display the current time, press any key to enter the main menu.

2.Ceiling solvent: move the cursor to "manual control" press [confirmed] button to enter the sub menu, select "ceiling" solvent and press the [ceiling solvent] button, then the pump will solvent bottle of methanol will be injected into the cuvette and cuvette methanol level need to soak the cuvette platinum electrode and titrating head and press [return] button to stop. Rotating the knob to adjust the appropriate stirring stirring speed, the reaction of the liquid in the cup can fully mix.

3.Cleaning burette: in "manual control" menu select "liquid" and press the [confirmed] key and wait piston in the measuring tube is increased to metering tube top and tip back to the completion of the liquid, and then select the "absorption" and press the [confirmed] key and wait in the measuring tube is the piston down to the bottom, this reagent bottle of Karl Fischer reagent will be sucked into the measuring pipe, until prompted to imbibition. If the metering tube upper air, can repeat the above steps, and then back to a liquid and a liquid. The purpose of this step is to remove the air above the metering tube and to make the metering tube full of fresh Carle's reagent.

4.A blank titration: press [return] button to return to the main menu, press play blank] button, then the instrument began pre titration, Karl Fischer Reagent in the measuring tube will by titrating head into the reaction cup and remove the moisture contained within the reaction cup, the titration is complete after TIPS empty white finish, press [return] key to exit, the instrument ready ready and to automatically maintain a standby state to the end. If the standby process of the system prompts drift abnormal means that there is excess water in the reaction cup, can shake the liquid in the reaction cup to clean the inner wall of the water vapor, and then repeat the operation can be a blank.

5.Drift determination: in the main menu and select "calibration", press [confirmed] button to enter, select the "drift" determination of press [confirmed] button, then enter 2 ~ 5min determination of time, press [confirmed] key to continue, waiting for the determination of the end of time, pop-up drift measurement results, the size and the environment humidity, titration degree, reaction cup air tightness, as well as the reaction tube desiccant activity related.

6.The reagent calibration: in the main menu and select "calibration" and press [confirmed] button to enter, select "calibration records" according to [confirmed] button to enter through according to the up and down arrow keys to move the cursor and press [delete] key will be 5 records cleared, press [return] button to return to the higher level. With 10uL micro injection needle, the exact amount from 10uL deionized water and ensure that the needle no bubbles, and paper to wipe the needle water, select the reagent calibration "press [confirmed] key to continue, pop-up sample prompted the countdown, then open the reaction cup sample plug, 10ul water into reaction cup below the liquid level, press [confirmed] key to continue, and then enter the water weight 10mg, then press [confirmed] key to start the calibration, waiting for the calibration is finished, the pop up first calibration results, repeat the above steps, at least calibration more than 3 times. If the result of the calibration is not good, it can be repeated two times, and the error of the result is larger than that of the calibration record.

7、The samples were determined: return to the main menu, according to [measurement] key to enter the measurement method that, according to [confirmed] key tips with the countdown, then add the prepared samples (sample as far as possible not stuck in the titration of the inner wall of the cup and electrode), press the [confirmed] button input sample number and sample weight, and press the [confirmed] key to start the measurement. Measurement of the end of the pop-up measurement results, but also to the main menu of the "measurement records" option to view the results of the measurement, in the results of the details of the interface and then press [confirmed] key from the print out results (matching with the printer). Repeat the above steps to continue measuring the next sample.

8、Over : after completion of all testing, into the main menu of options "manual control", choose "back to liquid press [confirmed] key, the measuring pipe of reagent injection back to Carl Fischer reagent bottle of Hugh and choose" waste "press [confirmed] button to the reaction cup of the liquid discharged to a waste liquid bottle, emptying and press [return] button to stop. Then select the "solvent" press [confirm] key, add a small amount of methanol to the reaction cup to soak the electrode and the titration head, take down the waste liquid bottle empty waste liquid, and finally close the instrument power switch.

9、Note: fall to the surface of the instrument reagent will erode the shell, must promptly clean up, removal or installation of the cap, drying tube and pipe when attention to the sealing ring of the correct use and installation, to avoid affecting the system tightness; please note meaning waste liquid bottle capacity before the operation of discharging the waste liquid, waste liquid bottle waste overflow will direct corrosion and damage the instrument air pump; ensure the reaction cup has enough of the methyl alcohol in the titration reaction, to avoid affect the measurement; reagents may be toxic, corrosive, flammable, please safekeeping and use.