The high and low temperature test box machine / alternating damp heat test box is mainly for the adaptability test of electrical, electronic products, and other components and other materials when stored, transported, and used in high temperature and low temperature environments. The high and low temperature test chamber is mainly used to carry out environmental simulation tests on the physical and other relevant characteristics of the product under low temperature, high temperature and conditions according to national standards or user-defined requirements. After the test, the performance of the product is judged by inspection , Whether it can still meet the predetermined requirements for product design, improvement, identification and factory inspection. Due to the large volume of the high and low temperature alternating heat and humidity test chamber, it is inconvenient to move or move and the circuit is complicated. When a fault occurs, it is often difficult for the user to start. In order to allow the user to quickly judge the fault and solve it by himself, the following introduces some maintenance high and low temperature Common faults and treatment methods of the test box. When the temperature and humidity controller displays abnormal temperature, please check the over-temperature protector of the control panel, whether the high and low temperature test box machine / alternating humidity and humidity test box is set at 150 ℃, please check whether the circulating motor in the equipment room is damaged or not running , Please check whether the solid-state relay in the temperature part is burnt out and short-circuited: if the heater is not burnt out, please use the AC voltage file of the three-meter meter, the voltage range is opened to the position of 600 volts, and the red and black rods are placed on the wire number and marked as T Set the temperature setting value of the humidity part to 0 ℃ on both sides of the solid state relay of AC, and the indicator light of the solid state relay of the temperature part will not light up. Below 10V, the solid state relay is burned and short-circuited.
1. The temperature controller of the high and low temperature test chamber machine / alternating humidity and humidity test chamber adopts imported instruments with PID adjustment and SSR output, fast auto-tuning, digital display, and convenient reading.
2. The box door, working room and shell are equipped with high temperature resistant sealing strips and pressing devices, which can effectively ensure the sealing and thermal insulation performance of the box body.
3. The studio and sample rack are made of stainless steel, and the outer box is made of high-quality cold-rolled steel plate with beautiful appearance.
4. With over-temperature protection, overload protection and short-circuit protection of the control circuit, it is safe and reliable to use.
5. The refrigeration system uses the French "Tai Kang" original fully enclosed compressor to ensure the low temperature stability of the high and low temperature test chamber.
The daily maintenance of the high and low temperature test chamber and the simple test of the main technical indicators can ensure that the work of the high and low temperature test chamber is in the best condition. The following are some points to note about the maintenance of high and low temperature test chambers:
1. The temperature and humidity of the high and low temperature test chamber are important factors that affect the performance of the instrument, which can cause the corrosion of mechanical parts, reduce the finish of the metal mirror, and cause the error or performance of the mechanical part of the high and low temperature test chamber; cause high and low temperature test The aluminum film of the optical components of the box, such as gratings, reflectors, focusing mirrors, etc., rusts, resulting in insufficient light energy, stray light, noise, etc., and even the instrument stops working, which affects the life of the high and low temperature test box. It should be regularly corrected during maintenance.
2. The dust and corrosive gas in the working environment of the high and low temperature test chamber can also affect the flexibility of the mechanical system, reduce the reliability of various limit switches, buttons, and photoelectric couplings, which is also the cause of the corrosion of the aluminum film that must be learned. one.
3. After a certain period of high and low temperature test chamber is used, a certain amount of dust will accumulate inside. It is best to regularly open the high and low temperature test chamber cover by a maintenance engineer or under the guidance of the engineer to remove dust inside, and at the same time, the radiator of each heating element Retighten, clean the sealed window of the optical box, calibrate it if necessary, clean and lubricate the mechanical parts, and finally, restore it to its original state, and then perform some necessary testing, adjustment and recording.
The high and low temperature test box machine / alternating humidity and heat test box is a simulation of the natural high and low temperature change environment, and is widely used in the test of the adaptability to the temperature environment during the storage and transportation of electronics, electrical products and other product parts and materials. Changes in electrical properties and mechanical properties. A: Low-temperature test method, Test B: High-temperature test method "Low-temperature and high-temperature tests are performed on the product. The high and low temperature test chamber adopts the most advanced temperature control method-balanced temperature adjustment method, so it can automatically obtain a reliable and accurate test temperature from high temperature to low temperature, or from low temperature to high temperature. Please check whether the solid state relay of the humidity part is burned out and short-circuited: if the heater is not burned out, please use the AC voltage file of the tri-meter, the voltage range is turned to 600 volts, and the red and black rods are placed on the line number marked H On both sides of the solid state relay, set the humidity setting value of the humidity part to 0%. At this time, the indicator light of the solid state relay of the humidity part will not light up. If the measured voltage value does not change, maintain it at 10V The following represents that the solid-state relay burns and shows a short-circuit state. Or first set the humidity setting value to 0%, and then check whether the humidification bucket in the machine room is boiling.
A wooden box is a container made of wood for storage or as a shipping container.
Construction may include several types of wood; lumber (timber), plywood, engineered woods, etc. For some purposes, decorative woods are used.
Boxes and crates are not the same. If the sheathing of the container (plywood, lumber, etc.) can be removed, and a framed structure will remain standing, the container would likely be termed a crate. If removal of the sheathing resulted in there being no way of fastening the lumber around the edges of the container, the container would likely be termed a wooden box.
The strength of a wooden box is rated based on the weight it can carry before the cap (top, ends, and sides) is installed. "Skids" or thick bottom runners, are sometimes specified to allow forklift trucks access for lifting.
Performance is strongly influenced by the specific design, type of wood, type of fasteners (nails, etc.), workmanship, etc.
Some boxes have handles, hand holes, or hand holds.
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