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How to maintain the thermal shock test chamber?

How To Maintain The Thermal Shock Test Chamber? Three Zones Thermal Shock Test Chamber Two Zones Thermal Shock Test Chamber 1. The radiator should be cleaned regularly. Condenser covered by dust will cause the high pressure switch of the compressor to trip and cause false alarm. The condenser should be maintained monthly. Use a vacuum cleaner to remove the dust attached to the condenser radiating net or use a hard brush after turning on the machine. Brush it or blow off the dust with a high-pressure air nozzle. 2. When opening and closing the door or taking the test object from the furnace, do not let the object touch the glue edge of the door to prevent the glue edge from being damaged and shortening the service life. 3. The ground around the fuselage and the bottom should be kept clean at all times to avoid accidents and performance degradation caused by a large amount of dust being sucked into the unit. 4. The refrigeration system is the core of the machine. Please check all the copper pipes for leakage of refrigerant once every six months, and the horn joints and welding joints, if there is oil leakage. 5. The high-current contacts of the power distribution board should be cleaned and overhauled at least once a year in the power distribution room. The loosening of the contacts will put the entire equipment in a dangerous working state. The components will be burned out, and the fire, alarm, and personal injury will be very dangerous. When cleaning Use a vacuum cleaner to suck out the indoor dust. 6. The power distribution room is cleaned once a year at least. When cleaning, please use a vacuum cleaner to suck up the indoor dust. The exterior of the cabinet must be cleaned more than once a year, and it can be cleaned with soap and water.If any questions about Thermal shock test chamber,please feel free to contact us to know more!Huda technology is always there for you./aboutus.htm

How to place wet ball gauze in the constant temperature and humidity test chamber?

How to place wet ball gauze in the constant temperature and humidity test chamber?During the humidity test, the wet ball gauze plays an important role in the humidity perception of the constant temperature and humidity test chamber.  The placement of wet ball gauze:1. Take the wet ball gauze out of the packing box and cut about 10cm;2. Put the lower end of the wet ball gauze into the sink to soak it (more easily to perceive the humidity), hang on it or put it on the humidity sensor. The maintenance of wet ball gauze:The wet ball gauze must be hung on the wet ball sensor at the upper end, and the lower end placed in the wet ball gauze sink, so that it can easily absorb the moisture in the sink and get wet. If the wet ball gauze is installed in other places, the humidity sensor will not be able to sense the humidity, resulting in the illusion that the humidity is 100%, the humidity cannot drop, or the humidity cannot be controlled at all. When doing the humidity test, you must check whether the wet ball gauze is hung up properly. If it has been hung, please check whether the gauze is wet. If it is dried out or the water absorption effect is poor, please replace the wet ball gauze in time.

What should you do if the constant temperature and humidity test chamber is stopped for a long time?

What should you do if the constant temperature and humidity test chamber is stopped for a long time? Due to special conditions, the constant temperature and humidity test chamber needs to be stopped for a period of time, some protective measures should be taken. The specific methods are as follows:(1) When the constant temperature and humidity test chamber is out of service, the contents in the chamber should be taken out, the power plug should be unplugged, and the inside and outside of the test chamber should be cleaned.(2) Use paper strips to pad between the door seal and the chamber body to prevent the door seal from sticking to the chamber body; if you plan to not use it for a long time, you can also apply some talcum powder on the door seal.(3) The test chamber must be placed in a dry and ventilated place to avoid direct sunlight. After the position is moved, the test chamber should be kept stable.(4) The indoor air has a certain degree of humidity, so do not cover the test chamber with a plastic bag. Moisture is not easy to be distributed, which will cause metal parts to rust and damage the performance of electrical components.(5) The freezing temperature of Freon used for refrigeration in the constant temperature and humidity test chamber is very low, so there is no need to worry about it freezing and place the test box in a higher temperature place.(6) If possible, it is best to switch on the power once a month, so that the compressor will run normally for half an hour to one hour and then turning off.

How to clean and maintain the constant temperature and humidity chamber in daily work?

How to clean and maintain the constant temperature and humidity chamber in daily work? 1. Cleaning and maintenance of the inside and outside of the constant temperature and humidity chamber.① The internal impurities of the constant temperature and humidity test chamber should be removed before operation.② The power distribution room should be cleaned at least once a year. When cleaning, a vacuum cleaner can be used to remove the indoor dust.③ The exterior of the cabinet must also be cleaned more than once a year, and wipe it with soapy water before cleaning.2. Inspection and maintenance of humidifier with constant temperature and humidity chamber. The water storage in the humidifier should be replaced once a month to ensure that the water is clean, and the humidification water tray should be cleaned once a month to ensure smooth water flow. 3. Removal of dust from the condenser of the constant temperature and humidity chamber. The condenser should be cleaned regularly and maintained monthly. Use a vacuum cleaner to suck out the dust attached to the condenser's heat sink or use high-pressure air to spray the dust.4. Replacement of the wet bulb test cloth in the constant temperature and humidity chamber When the surface of the test cloth is dirty or hard, or after the temperature control is completed, the test cloth must be replaced before the temperature and humidity sphericity control is continued. The test cloth should be replaced once every three months, and the temperature measuring body should be wiped with a clean cloth when replacing it, and the temperature measuring body should be cleaned first when replacing the new test cloth.5. Check the wet bulb water level of the constant temperature and humidity chamber and adjust the water level of the water tank not to be too high, so that the water overflows the water tank or is too low, so that the wet bulb test cloth absorbs water abnormally, affecting the accuracy of the wet bulb. The water level remains about six minutes full. That's it. The water level of the water tank can be adjusted to adjust the height of the water tank.

Energy saving control of constant temperature and humidity chamber

Energy saving control of constant temperature and humidity chamber   In this paper, we make a detailed analysis of temperature and humidity chamber’s hot and cold offset problems, put forward an elimination of hot and cold offset design principles. On the use of multi-body variable refrigerant flow system, proposed a system partition approach, this air-conditioning chassis group is often running, naturally, energy consumption will be more.   Therefore, to control the energy consumption of constant temperature and humidity chamber refrigeration system is the primary component of reducing the energy consumption. The energy-saving thinking and design of the temperature equipment refrigeration system is the most important problem that the engineering and technical personnel need to face. It is a requirement of the room temperature and humidity invariability. Sometimes the temperature deviation requirements within 1 degree Celsius, what’s more, also have higher humidity requirements.   With the rapid development in mechanical processing technology, requiring the deviation scope of temperature and humidity smaller, that means higher demand for the refrigeration system of constant temperature and humidity test chamber, will greatly improve the energy consumption of the refrigeration system. In order to reduce energy consumption, it is necessary to carry out the energy-saving design of the refrigeration system and experiment with it. In addition, because the refrigeration system approach uses traditional units, the current efficient variable refrigerant flow centralized air conditioning system is rarely used. Then the equipment of the cold and heat source costs can also be reduced to complete energy conservation.

Ozone gas what harm to human body ​

Ozone gas what harm to human body ​Ozone is mainly from the surface of the earth 20 km of the ozone layer, is the oxygen allotropy, mainly from human activities, automobiles, fuel and other important sources of pollution to produce ozone. If you inhale the ozone can cause respiratory infections, contact with the ozone will increase the existing respiratory diseases, and damage people's lung function, because the ozone is very strong corrosive. Ozone also on the human skin in the vitamin E until the destruction of the role, will lead to human skin wrinkling, dark spots, decreased vision, memory loss, but also damage the body's immune capacity, induced lymphocyte chromosomal lesions, accelerated aging, Copier toner heat generated by ozone is a strong carcinogen, it will cause all kinds of cancer and cardiovascular disease. From these aspects, the harm of ozone on the human body is very large, ozone aging test chamber is to simulate and strengthen the atmospheric ozone conditions, the role of ozone on the rubber and the law, rapid identification and evaluation of rubber anti-ozone aging performance And anti-ozone agent protective efficacy of the method, so as to take effective anti-aging measures to improve the service life of rubber products.

Types of Test Chamber Cooling System

Types of Test Chamber Cooling SystemThere are two major types of chamber cooling systems, expendable refrigerants and mechanically cooled.Expendable RefrigerantsExpendable refrigerants are liquid/gases that can be injected directly into the space being cooled or into heatexchangers, similar to mechanical systems. As the liquid enters the chamber (directly or through a fin coil) itabsorbs heat and flashes to a gas. The gas is then vented out of the chamber and should be ducted outdoors.The two most popular refrigerants are liquid nitrogen (LN2) and liquid carbon dioxide (CO2). Cryogenictemperatures down to - 184˚C can be achieved with LN2. CO2 on the other hand can only achievetemperature down to -68˚C. Both of these gases are environmental safe andcan be vented to the atmosphere. Note: it is imperative that the gases be ventedoutdoors. These gases displace oxygen and asphyxia can occur if the chamber is notproperly vented.Mechanically cooledMechanically-cooled refrigeration systems are fundamentally the same as those usedin home refrigerators. They utilize a compressor and circulate a refrigerant around aclosed loop system. The ultimate low temperature required by your testingdetermines the type of refrigeration system needed.Single StageSingle-stage refrigeration systems typically can pull the temperature in the chamber down to - 34˚C.Some manufacturers rate their single stage systems down to -40˚C. However, due to the refrigerant usedthere is very little cooling capacity available at -40˚C and can be difficult to achieve. For continuous operation at-40˚C and below most manufacturers recommend a cascade refrigeration system.CascadeCascade refrigeration systems have two separate refrigeration systems working to cool the chamber down to anultimate low of -73˚C and -85˚C on industrial freezer models. The first stage refrigeration system coolsand condenses the refrigerant in the second stage. The second stage refrigerant flows through an evaporatorlocated in the chamber which cools the air. These systems can become very complex depending on yourapplication.

Tell The Manufacturer Your Test Specimen Type

Tell The Manufacturer Your Test Specimen Type1.It is important to inform the chamber manufacturer of the type of product being test in the chamber. However, if all the details are not given to the chamber manufacturer, the resulting selection may not be best for your application and could cause safety risks.  2.The chamber manufacturer should understand your test objectives as well as you do. The more information he has regarding your product and your test requirements, the better equipped he will be in either selecting a standard product to meet your needs or proposing a custom chamber designed to meet the special requirements of your product testing.  3.For example, hydraulic valves under pressure are being test at various temperatures. Hydraulic lines enter and exit the chamber through an access port. Rarely, if ever, a fluid leak occurs in the chamber. This does not concern the operator since the warmest temperature achieved in the chamber is well below the auto-ignition point of the fluid. However, if a leak occurs the chamber will be at risk for an explosion. This is due to the fact that the standard nichrome wire heater used in most chambers can exceed 1000˚F surface temperature.  4.For this type of application temperature limited sheath heaters must be used at a minimum. Depending on the application, a classified explosion proof chamber may be required. There are many scenarios which could be used for examples, but the bottom line is to make sure you have given your chamber manufacturer all the details of your tests.  

Specification for maintenance of rain test chamber

Specification for maintenance of rain test chamberWe would like to introduce some Maintenances of Rain Test Box as follows:1.     Please check the water tank has enough water before operation, If not, please fill it avoid damaging the dump.2.     Please stopped it once you heard some noisy, and rebooted after the trouble is solved, in order to avoid influence the service life of the equipments.3.     It should be kept dry when the equipment is in nonworking condition. Please drain away water of the chamber and drying the chamber.4.     After the equipment runs for a long time, if the nozzle is blocked, the pipe must be removed, washed with tap water, and then assembled;5.     Avoid external force impact equipment;6.     Chemical exposure to this equipment shall be prohibited;7.     Check the circuit control system before each start.8.     Ventilation fans should be installed in the laboratory to maintain ventilation;9.     Check the Power supply and ground Wire10. Whether the power wire is properly connected to the specification and is truly grounded11.  The waste water discharge system of the equipment must be installed in place12. After the test, the power supply of the whole machine will be cut off;13. After test, the sample should be removed and the equipment should be cleaned.If you want to know more information (some guidance or user-manual), please feel free to contact with manager@climatetester.com.

How to Prevent Condensation in Test Chamber

How to Prevent Condensation in Test ChamberAir contracts as it cools. When a chamber is pulling down, it actually causes outside room air to be “sucked” into the chamber workspace. The moisture in the air will be drawn to and freeze on the cooling coil. The moisture will then vaporize into the air when the chamber is heated up and that moisture can end up as condensation on the test product. Dry Air Purge or Gaseous Nitrogen (GN2) may be used to minimize condensation. Purging the chamber with either of the two maintaining a slight positive pressure on the chamber and minimizes the moisture infiltration into the chamber. The dry air or GN2 contains very little moisture so the chamber air can stay “dry”. To help avoid condensation on the walls and product with humidity chambers, bring up the air temperature. first, let the walls and product stabilize, then raise humidity. If the chamber air temperature and humidity levels are raised faster than the wall and product temperature, moisture will condense on the cooler surfaces. By maintaining the dew point of the air below the surface temperature of the walls and product, moisture will not condense on the surfaces. In most cases you can run a characterization test or two first, to determine how long it takes the largest mass (be it product or wall) to stabilize. 

Troubleshooting for Some Problems during Application

Troubleshooting for Some Problems during ApplicationClimate explains some frequent questions of temperature and humidity chamber during application:. First, the constant temperature and humidity test chamber in the course of a sudden test failure, the control instrument appears on the corresponding fault display prompts and voice alarm tips. The operator can quickly check out which type of failure is in the chapter on the troubleshooting of the operation of the device. The operator can quickly troubleshoot to ensure that the test is performed normally. Other environmental testing equipment in use there will be other phenomena, it is necessary to specific phenomena, specific analysis and exclusion. Second, in the high temperature test, such as temperature changes can not reach the test temperature value, you can check the electrical system, one by one troubleshooting. Such as constant temperature and humidity chamber temperature is very slow, it is necessary to view the wind circulation system, look at the wind circulation adjustment baffle is open normally, on the contrary, check the wind cycle motor running is normal. Such as the temperature overshoot so you need to set the PID set parameters. If the temperature rises directly, then the controller fails to replace the control instrument. Third, the constant temperature and humidity test chamber in the hot and humid test, the actual humidity will reach 100% or the actual humidity and the target humidity difference is very large, the value is much lower, the former phenomenon: the wet bulb sensor may be caused by drying, It is necessary to check the wet bulb sensor water tank is water, the water level in the tank is controlled by a water level controller, check the water level controller water supply system is normal water supply, water level controller is working properly. Another may be the wet ball gauze due to the use of a long time, or water quality purity of the reasons, will make the gauze hard, so that gauze can not absorb moisture and dry, as long as the replacement or cleaning gauze can rule out the above phenomenon. The latter phenomenon is mainly the constant temperature and humidity chamber humidification system does not work, check the humidification system of water supply system, water supply system, whether there is a certain amount of water to control the humidifier boiler water level control is normal, humidification boiler water level is normal The If everything is normal, it is necessary to check the electrical control system, which requires professional maintenance personnel to repair. Fourth, constant temperature and humidity test chamber low temperature can not reach the test indicators, then you have to observe the temperature changes, it is clear that the temperature drop is very slow, or the temperature to a certain value after the temperature has rebounded. The former will check whether to do before the low temperature test studio drying, so that the studio to keep dry after the test sample into the studio to do the test, the studio test sample is placed too much, so that the studio The wind can not be fully circulated, in the exclusion of the above reasons, we must consider whether the refrigeration system failure, and this will ask the manufacturers of professionals to repair. The latter phenomenon is the use of constant temperature and humidity chamber equipment, such as the environment is not good, the device placed in the ambient temperature, place (the distance between the box and the wall) to meet the requirements (in the equipment operating instructions are provided ).

How to add Water to Saturated Tank

How to add Water to Saturated Tank A) Open the power control cabinet door, you can see the transparent water level indicator on the saturated tank, observe the actual position of the saturated barrel and the position of the highest water level (top of the water level indicator).  B) Open the water adding valve of the saturated barrel (the water adding valve is open when it is perpendicular to the water pipe and is close when it is in parallel with the water pipe).  C) Add purified water to the water adding inlet as shown in the figure (do not add the brine into it by mistake), and make sure to observe the water level sign. When the water level meets the requirement, stop adding water and close the water adding a hand-control valve.  Attention: if there is not sufficient water in the saturator, please add proper amount of Purified water or distilled water into it. If in the fog spray state, please stop fog spray. When adding water, firstly open the charging valve of the saturated barrel, and add into it from the water supply inlet of the saturated barrel and close the charging valve after adding the water. The Water Checking of Saturated Barrel Check the water level of the saturated barrel. Open the chamber door of the power distribution cabinet on the right side of the equipment, the saturated barrel is located at the right lower corner of the equipment, and the transparent water pipe on the saturated barrel is the water level indicator. The water level reaching 80% of the full chamber of the saturated barrel is appropriate. When the water level falls to 40% of the full, it is necessary to replenish water in time to avoid causing the test to stop in the middle due to water shortage.  When adding water to the saturated barrel, the water level should not be too high. When water level is too high, air may enter the saturated barrel to bring out a lot of water to the sprinkler head, causing the spray volume to increase, and the actual salt fog settlement is not accurate.  When adding water, make sure to pay attention to the water supply inlet position to avoid adding water into the brine chamber and influencing the concentration of the test solution, thereby influencing the final test, or adding brine into the saturator by mistake. 

Altitude Chambers - Altitude/Humidity/Temperature Test Chambers

Altitude Chambers - Altitude/Humidity/Temperature Test ChambersAltitude simulation testing is important for manufacturers of products that might be shipped via air. It is especially important for defense and aerospace applications where pressure and vacuum conditions are even more intense. CLIMATE INSTRUMENT altitude/temperature and altitude/temperature/humidity chambers offer performance flexibility and reliability for today's mixed-environment testing requirement. Our altitude test chambers control the temperature environment for testing your product while simulating various altitude environments from site level to 100,000 feet. The same chamber can be used to simulate temperature and humidity.If you are interested in CLIMATE Test Chamber, please feel free contact us :Our Email and Tel :manager@climatetester.com / 18680067830

Dust&Sand Test Chamber

Dust&Sand Test ChamberTemperature and humidity are not the only environmental conditions that products need to be tested to.Climatetester has developed advance designs to realize testing for additional conditions that products may be affected by.Dust testing is one of such designs. Dust Chamber Sounds simple enough, just build a cabinet that creates a continuous environment of dust. However, there are many details to consider.  The floor of the chamber is an inverse pyramid. At the tip of the cone, an air nozzle lets in compressed air.The cone is filled with dust. A wire shelf above the floor holds the part under test.A window and rubber gloves thru the door allow the parts to be turned to ensure even exposure without opening the door.Special considerations were made to ensure that the dust is continuously dispersed and not accumulating on the floor.The compressed air is dried to keep the dust from clumping. And a special clamshell type door is used for easy loading.