YH-40B Constant Temperature and Humidity Standard Curing BoxExport to countries and regions such as the United States, Europe, the Middle East, and Southeast Asia. Company SalesYH-40B Constant Temperature and Humidity Standard Curing BoxConcrete vibration table, concrete air content tester, steel bar marking machine, concrete vibrating screen machine, scraper fineness meter, Stomer viscometer, paint film impactor, paint film grid, pencil hardness tester, paint film magnetic thickness gauge, coating cup protrusion tester, T-bending tester, fluorescent UV aging chamber, etc. Faced with the increasingly competitive market today, Meiyu people will strive for a larger market share with higher quality products, more favorable prices, and more comprehensive after-sales service.

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Technical parameters:
● Humidity control temperature: RH90% or above.
Control temperature: 20 ℃± 1 ℃.
Power supply voltage: 220V 50HZ.
Heating power: 1000W.
Cooling power: 145W.
Humidification power: 45W.
Moisturizing capacity: 400 milliliters per hour.
Humidifier capacity: 5.5L.
● Box space: 40B type can hold 15 sets of 150 ³ concrete test blocks.

Introduction:
This box is developed, designed, and manufactured according to the national GB1345-99 "Cement Standard Consistency Water Consumption Setting Time Stability Test Method" and technical data provided by the National Building Materials Research Institute and relevant departments. It is suitable for use in large, medium, and small cement plants, construction and engineering departments for concrete and cement specimen setting and curing. In terms of the structure of the original product, a series of improvements have been made. The box door is sealed with magnetic tape, and the insulation layer is made of insulation cotton with good insulation effect. A refrigeration unit has been added inside, which runs smoothly and has low noise. The heater is made of copper pipes and is rust proof and corrosion-resistant. The humidification device has a series of advantages such as beautiful appearance, high precision in temperature control and humidity control. A user troubleshooting and maintenance table has been added in the user manual as a basis for users to provide records to the factory during maintenance, so that our maintenance box can be improved in the production process and the product can be durable to meet the user's requirements.

Structure and working principle:
The box is made of two layers, inner and outer, consisting of an outer box and an inner box. The outer box is made of high-quality cold-rolled steel plate, the inner box is made of stainless steel plate, and the shelves are made of stainless steel profiles, with good corrosion resistance. The water tank below the inner box is used for heating and auxiliary humidification. The humidification system mainly uses ultrasonic humidification instruments, supplemented by water heating and evaporation. The automatic control system is controlled by temperature and humidity control instruments to cool according to the given temperature and humidity, and automatically switch between heating and humidification. The temperature and humidity inside the box are displayed digitally by the instruments.

Temperature control: When the temperature inside the box is lower than the lower limit set value of the temperature controller, the temperature controller outputs a heating signal to command the electric heating element to start working. Conversely, when the temperature is higher than the upper limit set value, the temperature controller commands the refrigeration system to work. When the temperature inside the box reaches the required value, it automatically stops heating or cooling.
Humidity control: Ultrasonic humidifier is used for humidification, which can ensure that the humidity inside the box reaches ≥ 95%. The humidification device is automatically controlled by a temperature controller. When the humidity is less than 95%, the temperature controller commands the humidifier to work. After reaching the hysteresis value, it automatically stops working. The hysteresis value should be adjusted to 0-1 ℃ and should not be too large.

usage method:
The box is in place, leveled, grounded, and left to stand for 24 hours. Clean water is added to the water tank until the water level exceeds the heating tube.
Open the box door and take out the humidifier. Open the side door, place the humidifier on the upper tray, remove the transparent water tank, turn it counterclockwise, unscrew the water tank cover, fill it with clean water (distilled water is suitable), screw on the water tank cover after adding water, put it back into the humidifier body, then press the humidifier nozzle on, and insert the humidifier plug into the socket inside the side door. Turn on the power switch and adjust the spray knob to the zui large position. The temperature and humidity of the temperature controller in the maintenance box have been adjusted before leaving the factory.
Connect the power supply to start the instrument. When the temperature and humidity inside the box reach the set value, place the test piece. Heating and cooling are strictly prohibited from being carried out simultaneously.

Our company has a complete management system and a sound quality management system, as well as a comprehensive, fast, and in place after-sales service system, to serve customers with excellent quality!