Electrolytic analyzer is a commonly used analytical instrument. It adopts advanced ion-selective electrode measurement technology to achieve accurate detection. It has the advantages of fast, accurate, convenient and practical analysis, and is widely used in many industries. Users will also have certain faults when using the electrolyzer analyzer, so we need to have some understanding of the fault handling method in the process of use. Today, Xiaobian has summarized some common faults of electrolytic analyzers for everyone. Let's take a look at the solutions to the common faults of electrolytic analyzers.
1. How to solve when the detector fails
There are four reasons why the detector fails:
1 The plug of the detector is loose with the main board base;
2 the detector itself is broken;
3 The fixing screw on the valve core and the motor rotating shaft are not fastened in place;
4 The spool itself is too tight to rotate. The order of inspection is 3-1-4-2.
2. Reasons for the poor sample absorption and treatment methods
There are four main reasons for poor sample suction, which are checked along the line from simple to complex.
1 Check whether there is any air leakage in the connection between each interface of the pipeline (including the connection between the electrodes, between the electrode and the valve, and between the electrode and the pump tube). This phenomenon is manifested as not aspirating;
2 Check if the pump tube is stuck or too tired. At this time, replace the new pump tube. The phenomenon is that the pump tube emits an abnormal sound;
3 There is protein precipitation in each pipe, especially at each joint. This phenomenon is manifested by the unstable positioning of the liquid flow rate process, even if a new pump tube is replaced. The solution is to remove the joints and clean them with water.
4 The valve itself has a problem, so check it carefully.
3. Causes and treatment of electrode drift and loss of control
The most common cause of 1 electrode drift is that the ground wire is not connected, the ground wire should be inspected; check whether the drifting electrode silver bar is not inserted into the signal socket or the contact is poor;
2 voltage is unstable, it is best to connect UPS uninterruptible power supply or better quality regulated power supply (poor quality power supply will cause electrode drift);
3 to avoid electromagnetic interference, equipment with higher power should be as far away as possible from the instrument, independent power supply;
4 Check whether the standard solution and the cleaning solution have been used up; if the reference filling liquid in the flow cell is too small, it should be filled in time;
5Na, pH electrode drift when using glass electrode cleaning solution cleaning. Rinse again with distilled water;
6 If the electrodes are all drifting, check if the reference electrode is expired;
7 The positioning is not good, causing the solution not to fully immerse the electrode, and the positioning operation should be performed again;
8 There is a bubble above the reference electrode, the flow cell should be tapped, and the bubble is moved above the Na electrode;
9 The reagent expires or is contaminated. Check the A and B standard solution and the cleaning solution bottle for flocculation.
4. How to deal with when the electrode slope is reduced
Low electrode slopes will cause poor test linearity and sometimes affect electrode repeatability. The main reasons are:
Excessive protein adsorption on the 1 electrode membrane;
2 the air humidity is too large;
3 temperature is too low;
4 life is coming.
In the fourth case, the user needs to replace the electrode. The first type can be treated with deproteinized solution. The Na and pH electrodes have a special cleaning solution. The remaining electrodes can be prepared by a protein solution prepared by dissolving a piece of protease in 30 ml of 0.1 M hydrochloric acid. Use the first cleaning function of the service program to repeatedly clean, remove the protein, then rinse it with PVC cleaning solution several times, and calibrate the sample after stabilization.
The second and third cases mainly affect the Na and pH electrodes. The humidity of the air is too high. The dehumidifier should be used for dehumidification; if the temperature is too low, it can be heated indoors. If these two conditions are not available, the Na electrode, pH electrode, signal plate can be heated and dehumidified by a hair dryer before measurement.
5, the reason for the abnormal value of the test blood sample and its solution
When testing a blood sample, if an abnormal value occurs, follow the steps below to check:
1 Whether there is a high-powered electrical appliance near the start or leakage (such as centrifuges, refrigerators), causing voltage fluctuations;
2 inhalation of blood clotting during testing;
3 The solution is not in place, you can check whether the positioning is good. If the solution is not in place, you can use the relocation program in the service program to reposition it.
4 Check whether the container containing the blood sample is contaminated, and whether the disinfectant or the like remains.
5 Check if the correction factor is correct. If there is an abnormality, the correction factor can be cleared.
6 If it has not been calibrated for a long time, it can be recalibrated and then measured. Optical microscopy is a commonly used experimental instrument that plays a very large role in the laboratory. Optical microscopes produce a certain amount of dirt and wear during use. If these dirt and wear accumulate over a long period of time, it is easy to cause the optical microscope to be unusable. Therefore, when we use it, it is very important for the maintenance of optical microscope. What is the specific maintenance and maintenance method? The following small series will come to you for a specific introduction.
1, daily maintenance (1) moisture-proof optical lens is easy to mold, fog. Mechanical parts are prone to rust after damp. 1 to 2 bags of silica gel should be placed in the microscope case as a desiccant. (2) The surface of the dust-proof optical component falls into the dust, which not only affects the passage of light, but also enlarges the optical system to generate a large stain, which affects the observation. Dust and sand fall into the mechanical part, which also increases wear and tear, causing movement to be blocked and the damage is also great. Take care to keep the microscope clean. (3) Anti-corrosion microscopes cannot be placed together with corrosive chemicals. Such as sulfuric acid, hydrochloric acid, strong alkali and the like. (4) Heat prevention to avoid thermal expansion and contraction caused by opening and falling of the lens. Therefore, the biological microscope should be placed in a dry, cool, dust-free, non-corrosive place. Immediately after use, wipe it clean, cover it with a dust-proof venting cover or put it in a box. When the microscope is idle, cover it with a plastic cover and store it in a dry place to prevent dust and mildew. Store the objective lens and eyepiece in a container such as a desiccator and prevent some desiccant.
2, the maintenance of the mechanical system sliding parts: regularly apply some neutral grease paint and plastic surface cleaning: stubborn stains can be cleaned with a soft detergent, it is recommended to use silicon cloth. Plastic part: It can be cleaned with a soft cloth dipped in water. Note: Do not use organic solvents (such as alcohol, ether, thinner, etc.). Damage is caused by corrosion of machinery and paint.
3. Maintenance of the optical system After cleaning the lens, gently wipe the eyepiece and objective lens with a clean soft silk cloth. The concentrator and mirror can be wiped clean. For more stubborn stains, use long-fiber absorbent cotton or a clean cotton cloth to wipe off some dimethyl or lens cleaning solution (3 parts alcohol: 1 part ether), then dry with a clean soft silk cloth or use a blow ball. Blow dry. Note: Do not penetrate the lens into the lens of the objective lens, otherwise the lens of the objective lens will be damaged. Pure alcohol and xylene are easy to burn, so be careful not to ignite these liquids when turning the power switch on or off. Treatment of mold and eyepieces with mildew and fog. Prepare 30% absolute ethanol + 70% diethyl ether. Separate the different lenses into desiccant containers. It is best to use cotton sticks, gauze, soft brushes and other soft things. Wiping the oil mirror is going to be cleaned at the time. Especially for the 100X oil mirror, if the treatment is not proper, the front piece is easy to be immersed or opened. The eyepiece can be removed and cleaned by yourself. The 16X eyepiece should be replaced with a reversed surface. The front piece is concave. Do not remove the objective lens. Note: When scrubbing the lens, do not use excessive force to prevent damage to the coating. It is best to concentrate on maintenance once in 2 months. When the microscope is used for a long time, each lens should be labeled to avoid mismatching.
4, regular inspection In order to maintain the stability of performance, it is recommended to do regular inspections and maintenance. In summary, the maintenance of the biological microscope is mainly to prevent dust, moisture, heat and corrosion. Wipe clean in time after use, and regularly add neutral grease to the relevant parts. For some complicated structures and precision-equipped components, if you do not have certain professional knowledge, certain skills and special tools, you cannot disassemble them without damage.
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