I. Overview of constant temperature and humidity box for physical and chemical properties test standard of wood-based panel
TD17657-YH type wood-based panel physical and chemical properties test standard constant temperature and humidity box is made by Hebei Tianqi Xingzi Testing Equipment Co., LTD. B/T17657-2013 "Test Methods for Physical and Chemical Properties of wood-based Panels and veneer wood-based panels" requirements for balanced treatment of specimens developed, as well as the international standard ASTM D6007-02 "Standard test method for determination of formaldehyde concentration in gas released from wood products in small-scale environmental chambers" ISO16000-9 "Determination of volatile organic compounds released from building products and furniture". this product is suitable for: wood-based panel production enterprises and related quality inspection departments to all kinds of sheet specimen balance treatment.
According to the equipment in the fan dehumidification based on further improvement added dehumidifier, microcontroller control, in the overall shape of the internal combination, a series of improvements, closed door. Using magnetic strip closed, internal added refrigeration unit and humidification, dehumidification devices, with beautiful modelling, higher accuracy of temperature control a series of advantages, increased the user in the operating instructions from troubleshooting maintenance table, as the user for the manufacturer to provide maintenance records, in order to make our factory in the production process to further make products to be durable, achieve ideal purpose of users.
Two, the physical and chemical properties of wood-based panel test standard constant temperature and humidity box technical parameters:
1, temperature measurement accuracy: ±1℃
2, humidity measurement accuracy: ± 5%
3, control temperature: 20±2.0℃
4, control humidity: 50 ~ 93%
5, refrigeration power: 150W
6, heating power: 600W
7, humidifying power: 35W
8. Dehumidification power: 93W
9. Humidification capacity: 300ml/ hour
10, voltage: 220±10V
12, power frequency: 50±1HZ
13, working size: 5805001150
14. Overall dimension: 10007201450
3. Standard for physical and chemical properties test of wood-based panel
1. the box body is composed of two layers inside and outside. the outer box body is made of high-quality cold-rolled steel plate, the inner box body is made of acid-alkali resistant stainless steel plate, and the shelf is made of stainless steel profiles, with good corrosion resistance.
2. the rear of the box is heated by air heating tube.
3, humidifying system with ultrasonic humidifier humidifier.
4, dehumidification system to refrigeration moisture absorption method dehumidification.
5, automatic control system by the temperature control and humidity control instrument according to the given temperature value and relative humidity value of refrigeration and humidification and humidity to implement automatic switch, the temperature and relative humidity in the box, by the instrument digital display.
Four, physical and chemical properties of wood-based panel test standard constant temperature and humidity box working principle:
Temperature control: When the temperature in the cabinet is lower than the lower limit set by the temperature controller, the output heating signal of the temperature controller commands the electric heater to start working. (Conversely, when the temperature is higher than the upper limit given value, the temperature controller commands the refrigeration system to work). When the temperature in the box reaches the requirements, it will automatically stop heating or cooling. Humidity control: When the humidity in the box is lower than the lower limit set by the humidity controller, the humidification signal output by the humidity controller commands the ultrasonic humidifier to start working. (On the contrary, if the humidity is higher than the upper limit, the humidity controller will command the dehumidification system to start working). When the humidity in the cabinet reaches the required level, the humidification or dehumidification is automatically stopped.
Five, instrument setting method:
the INSTRUMENT can be SET after POWER-on, and it can be set according to the use requirements when leaving the factory. If there are special requirements, it can be reset to meet the needs of users.
6. Standard for physical and chemical properties test of wood-based panel
1, box position static 24 hours, must be connected to the effective ground wire and adjust the level of the box, to the moisture controller sensor cocoon type plastic box with distilled water, put the gauze into the box.
2. Open the side door, remove the nozzle of the humidifier, remove the transparent water tank, rotate the bottom cover of the water tank counterclockwise, fill it with clean cold water (distilled water), tighten the cover and put it back on the humidifier, turn on the power switch (the power indicator is on) and adjust the spray volume knob to the maximum position.
3. Check the given values of the temperature and humidity controller. the given values of temperature and humidity have been adjusted before delivery. (Temperature control: upper limit 21.5℃, lower limit 18.5℃, humidity control value: 50%).
4, switch on the power supply, turn on the power switch, make the instrument start to work, until the temperature and humidity in the box reach the given value before putting the specimen.
Seven, physical and chemical properties of wood-based panel test standard constant temperature and humidity box Precautions:
1. the box body should be placed in a ventilated, dry, smooth and non-corrosive medium environment.
2. after the box is in place, it needs to be stationary for 24 hours before it can be powered on. It must use a regulated power supply with effective grounding. the wiring should be left "zero" and right "phase".
3. Pay attention to keep the water level of the humidifier water tank and the cocoon plastic box of the humidity controller sensor in daily use, so as not to affect the normal use.
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