Commissioning procedure for trace moisture analyzer
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The instruction manual of the trace moisture analyzer provides a detailed and detailed description of the process, assembly and maintenance procedures and procedures of the instrument. However, for the quick and convenient use of the customer, the steps of adjusting the instrument and adjusting the new electrolyte balance point are briefly described as follows:
1. After unpacking, check if the accessories are complete.
2, the fixed electrolytic cell (different types of different holders) holder, installed and tightened on the mainframe.
3. Carefully remove the electrolytic cell from the calcium plastic box, place 2 electrodes, dry tube (embedded in the calcium plastic box), inject the cock, take out the electrolytic cell stopper, and apply a little vacuum grease at all the grinding points. Or Vaseline is ready for use.
4. The silicone rubber pad in the middle of the injection cock is already installed. When the needle is inserted into the needle for the first time, it is difficult to get in. You can use the hard needle to repeat it several times, or you can loosen the injection cock.
5. Open the electrolyte bottle and pour the electrolyte into the lower mark line of the pool bottle. Then pour the electrolyte into the electrolysis electrode (with net) about 2 cm high, place it in the position of the pool bottle, put the white stir bar into the electrolytic cell liquid for the electrolyte to save, the fresh electrolyte is black, color The deeper the electrolyte, the fresher it is.
6. Place the measuring electrode (fine electrode with 2 small platinum studs), drying tube, stopper and injection cock in the corresponding position of the pool bottle. Place the assembled electrolytic cell on the main unit and prevent contact with water during the entire operation.
7. Plug the electrolytic electrode (with net) into the electrolytic socket of the host and plug the measuring electrode plug into the measuring socket of the host. Immediately after the electrolytic cell is placed, the left side is inserted into the left side and the right side is inserted into the right side.
8. Turn on the power switch on the back of the main unit, turn on the electroplating switch on the main unit panel, and turn on the stirring switch. Adjust the main unit's stirring speed control knob so that the liquid surface has a small swirl. Can't be too fast, too fast, the stirrer will beat the electrode.
9. Drain 10 μl of water from the injection cock with a 50 μl sampler and pour the needle under the liquid surface. Note: The first time may be very tight, you can hold it with your hand and you can't bend the needle. This was repeated several times with a 50 microliter sampler to draw 10 microliters of water from the injection cock opening to inject water into the electrolyte. Each time, it is 10 seconds apart to observe the color change. When the color turns brownish red, the injection volume is reduced to 1 microliter of water. Similarly, every time you enter, it is necessary to wait for 10 seconds to observe the color change. When the color changes to light yellow, the green light is on and starts counting, and the water is stopped ["Instruction" 5 (3)].
10, the new balanced electrolyte, the pool bottle is yellow, the inside of the electrolysis electrode is dark, and naturally turns pale yellow after a few hours. The liquid level of the electrolysis electrode and the pool bottle is not the same as high, and it automatically becomes the same after a few hours of normal use.
11. Wait until the end point is counted, stop counting, the end light is on, and the buzzer sounds, the electrolyte balance point is found, and the normal sample can be measured. Before the normal measurement of the sample, in order to determine the normal and accurate of the entire system of the instrument, electrolytic cell, electrolyte, 0.5 microliter of needle into the pure water for calibration ["Instructions" five (five)], with a 0.5 microliter sampler, into The accuracy of 0.1 μl water observation instrument is displayed between 90 and 110 micrograms, indicating that the instrument is normal and can be used normally.