bannière
Maison

Reliable Hot And Cold Resistance Test Equipment

Reliable Hot And Cold Resistance Test Equipment

  • Use Principle of High and Low Temperature Test Chamber Low Temperature Constant Temperature Tank Use Principle of High and Low Temperature Test Chamber Low Temperature Constant Temperature Tank
    Jan 03, 2025
    Use Principle of High and Low Temperature Test Chamber Low Temperature and Constant Temperature Tank  Because of its own circulation system, the uniformity of temperature field is very high, and more and more experiments are applied to the low temperature constant temperature tank. Mainly used in petroleum, chemical, electronic instrumentation, physics, chemistry, biological engineering, medicine and health, life science, light industrial food, physical property testing and chemical analysis and other research departments, colleges and universities, enterprise quality inspection and production departments, to provide users with a hot and cold controlled, uniform and constant temperature field source for test samples or products to perform constant temperature test or test. It can also be used as a heat source or cold source for direct heating or cooling and auxiliary heating or cooling. What are the precautions for using a low temperature or constant temperature tank? 1, Before the use of low temperature constant temperature tank, the tank should be added to the liquid medium (pure water, alcohol, methyl silicone oil), the medium liquid level should be less than 20mm workbench, otherwise the power will damage the heater. 2, The selection of liquid medium in the low temperature constant temperature tank should comply with the following principles: When the operating temperature is below 5 ° C, the liquid medium is generally alcohol; When the operating temperature is 5 ~ 85℃, the liquid medium is generally water; When the working temperature is 85 ~ 95℃, the liquid medium can choose 15% glycerol aqueous solution, which can reduce the evaporation of water; When the operating temperature is higher than 95 ° C, oil is generally selected as the liquid medium, and the open cup flash point value of the selected oil should be higher than the operating temperature of 50 ° C or more; Generally, methyl silicone oil with low viscosity is used. 3, Power supply: 220V50Hz, the power supply should be greater than the total power of the instrument, the power supply must have a good "grounding" device. 4, The instrument should be placed in a dry and ventilated place, and there are no obstacles within 300mm around the instrument. 5, When the thermostat working temperature is high, should be careful not to open the cover, hands do not enter the groove, to prevent hot injury. 6, After using, all switches are placed in the off state, cut off the power. 7, Avoid acid and alkali substances into the tank corrosion coil and inner liner. 8, The instrument should do a good job of regular cleaning work, long-term use, empty the media in the tank, and wipe clean, keep the workbench and the operating panel clean. 9, Often pay attention to observe the liquid level in the tank, when the liquid level is too low, the liquid medium should be added in time. 10, Liquid external circulation, customers should pay special attention to the fastness of the connection of the leading pipe, strictly prevent falling off, so as to avoid liquid leakage.
    EN SAVOIR PLUS
  • Efficacy of Electronic Expansion Valve in High and Low Temperature Test Chamber Efficacy of Electronic Expansion Valve in High and Low Temperature Test Chamber
    Dec 31, 2024
    Efficacy of Electronic Expansion Valve in High and Low Temperature Test Chamber The electronic expansion valve of the high and low temperature test chamber adjusts the water supply rate of the air conditioning evaporator according to the preset program flow, which is called the electronic expansion valve because it belongs to the electronic adjustment mode. It integrates the development trend of refrigeration mechatronics, with the unparalleled characteristics of the expansion valve, and presents the standard for the intelligent system operation of the refrigeration system of the quotation of the high and low temperature test chamber. It is a kind of automatic control environmental protection and energy-saving components with great development prospects, and is the orientation of the development trend of the quotation of the high and low temperature test chamber in the future. The main purpose of the electronic expansion valve and the hot air conditioning expansion valve is basically the same, and the structure is various, but in the characteristics, the two have great differences. From the perspective of control and maintenance, the electronic expansion valve is composed of three parts: control board, electric actuator and controller. Generally speaking, most of the electronic expansion valve only refers to the electric actuator, that is, the controllable drive equipment and the oil circuit board. In fact, only this part is unable to operate. The key hardware configuration of the electronic expansion valve control board is designed by single chip microcomputer, such as the control board also needs to operate the DC frequency conversion of the refrigeration compressor and the centrifugal fan, and the method of multi-machine cascade is generally selected. The controller of the electronic expansion valve generally uses thermal resistance or thermal resistance. As a new type of hydraulic control system, electronic expansion valve has been early to improve the definition of throttle organization, which is the key step of the intelligent system of refrigeration system, is the key way and ensure that the refrigeration system is upgraded enough to truly maintain, is a representative of the mechanical and electrical engineering of refrigeration system, has been used in more and more industries. Because of the selection of electronic expansion valves, the awareness of a certain type of system submission to expansion valves existing in the whole process of the refrigeration unit design scheme has been enhanced, and the new pattern of air conditioning expansion valves for system improvement services has played a key role in the development trend of the refrigeration manufacturing industry. The high and low temperature test chamber can complete the test process according to the pre-set curve, and can accurately control the temperature rate within the range of the heating rate capacity, and can control the heating and cooling rate according to the slope of the set curve. Temperature control is a heating process, high and low temperature test chamber heating using independent heating, far infrared nickel-chromium alloy high-speed heating wire, P.I.D+S.R system co-channel coordinated temperature control, through microcomputer calculation of output power, to obtain high-precision, high-efficiency electricity benefits. In order to achieve rapid heating and high temperature, the method of increasing the number of heating wires and improving the temperature control performance of software is generally adopted. By using international brand compressors and circulating fans, the chamber has uniform temperature distribution, high efficiency for environment-friendly refrigerant, low energy consumption and saved energy. The use of energy regulation technology in the design of refrigeration system can not only ensure the normal operation of the unit, but also effectively adjust the energy consumption and cooling capacity, so that the refrigeration system is in a good running state.
    EN SAVOIR PLUS

laisser un message

laisser un message
Si vous êtes intéressé par nos produits et souhaitez en savoir plus, veuillez laisser un message ici, nous vous répondrons dès que possible.
soumettre

Maison

Des produits

WhatsApp

Contactez-nous