The storage conditions of precision instruments and meters, the influence of temperature and humidity changes on instrumentation and instrumentation cause the damage of instrumentation. There are vibration, heat and moisture. The damage of instrumentation and instrumentation cannot be observed from the outside in many cases. It will cause in use. Measuring additional errors affects the safe and economic operation of the main equipment. Therefore, it is very important to store instruments and meters reasonably and meticulously.
First, warehouse storage conditions and stacking methods:
(1) Instruments and meters must be placed in a dry, ventilated enclosed warehouse. The ambient temperature and humidity must not change drastically. It is best to control between 5 and 30 ° C and the relative humidity is below 70%.
(2) There shall be no corrosive gas in the library, and no chemical or acidic substances are allowed to exist;
(3) If the warehouse is insulated by infrared light bulbs, the light column of the infrared light bulb should not be directly exposed to the instrumentation equipment. Some infrastructure warehouses use furnace fire insulation in winter, and should be strictly fireproof and dustproof, and the fire source is not allowed to be directly close to the electrical instrumentation. In order to avoid overheating of the instrument bakelite or damage to internal electrical parts. Instrumentation, especially advanced precision instruments, should be placed in a special cabinet. Each instrument should be packaged with moisture-proof paper and placed in the original box (or foam box). Walk away and place the electrical instrumentation equipment on the rack.
If it is stored in a common rack, the curtain should be hung to prevent moisture and dust from intruding. For high-precision instruments above 0.5, it must be stored in the cabinet.
Store on the rack, the cartons should not be stacked too high to prevent the bottom layer from being crushed.
Instruments and meters packed in boxes (wooden boxes) can be stacked on top of each other, but the maximum is not allowed to exceed 3m, generally 1.5~2m. The pile shape must be flat and stable to prevent tilting and collapse. The bottom of the pile should be properly raised according to the ground moisture in the warehouse. It is better to be protected from the tides.
Instrumentation, whether handling or stacking, should be strictly prohibited from rolling, throwing, lying down, and inverting (including wooden box packaging), and must be handled lightly to avoid loss.
Second, storage and maintenance:
(1) During the storage of the instrument, the instrument should pay attention to the air flow in the warehouse to prevent exposure to the sun, and also does not allow the room temperature to change drastically. Because the overcooling or overheating will cause the internal parts of the instrument to shrink or expand and deform, it can also The permanent magnet in the instrument is demagnetized or the internal coil is mildewed.
(2) When the instrument is loaded or unloaded in the warehouse or stack, it must be protected from moisture, open air overheating (sunlight exposure) or rain. The storeroom is not allowed to use watering to cool down. When there is a lot of dust on the floor, it can be mopped with a mop. In the rainy season, the package is susceptible to moisture. If the moisture is emitted, the instrument is taken out immediately, and the instrument is loaded after drying (drying) the dry package.
(3) Instruments and their accessories and spare parts should be protected from rust. The externally threaded metal parts should be coated with neutral Vaseline (not too thick). The painted parts are not allowed to be oiled. Do not wipe with a damp cloth.
(4) During the storage period, the instrumentation should be diligently inspected, especially before and after the rainy season, and problems should be dealt with promptly. If you find that the appearance is mildew, you can use the car wax to polish it. If you find the quality change, you must send it to the manufacturer for overhaul.
(5) During the inventory period, all instruments that use dry batteries for working power must take out the dry batteries to prevent the internal batteries from being damaged by mildew or short circuit.
(6) All electrical instrumentation accessories should be stacked with equipment in principle. In order to store the warehouses neatly, they can be placed in a centralized manner. However, it is necessary to record the listings one by one, and write out the accessories belonging to the instrument, preferably the instrument. The main body of the instrument is placed on the upper part of the rack, and the attached and spare parts are placed correspondingly on the lower part of the apparatus, so that inspection, maintenance, storage and distribution are convenient.
It is better to stack the instruments that belong to the control panel (the same is also the switchboard), and stack the accessories together, so that the construction and production personnel can check the equipment and do the inspection and calibration work.
The storage of instruments and meters has strict requirements on the temperature and humidity of the environment. The temperature and humidity of the external environment change with the seasons. The instruments and meters stored in the warehouse are inspected and recorded by the warehouse manager or the manager from time to time. Value, the abnormal situation is found to use the humidification or dehumidification equipment to control the humidity of the warehouse and the workshop. Such management methods are time-consuming and labor-intensive, and the recorded data is not objective because of human factors. Such methods are not in line with the requirements of modern enterprise management; for advanced precision instrumentation, is there a better way? store? The constant temperature and humidity device can be used to store the instrument and meter, and the PC end can be connected remotely, so that the recorded data can be conveniently browsed, and the temperature and humidity storage problem of the instrument and meter can be solved.
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