商品介绍
This series of curing boxes adopts an intelligent temperature and humidity control system, which can accurately command functions such as heating, cooling, and humidifying. It operates automatically and switches between functions to achieve dynamic balance of temperature and humidity inside the box. It can also be equipped with an automatic timing printer and a water level sensor. This improves the accuracy of temperature and humidity as required by standard curing conditions and the level of automatic control, reduces energy consumption, replaces existing low - grade standard curing boxes and non - standard curing rooms built by enterprises, and creates a standard environment for specimen conditioning and testing.
II. Main Technical Parameters
- Temperature control accuracy: ±1℃
- Temperature measurement accuracy: ±0.5℃
- Internal temperature of the box: 20℃
- Heating power: 500W, temperature difference < ±1℃
- Overall noise of the machine: <65dB, working voltage: 220V±10％
- Humidity control accuracy: ±1％RH, relative humidity ≥ 92RH
- Humidity measurement accuracy: ±3％RH, frequency: 50HZ
- Compressor power: 136W, temperature and humidity sensor: Pt100 A - grade
- Volume:
- Model 40B: 600*500*1150mm (40 groups of cement specimens, 15 groups of concrete specimens)
- Model 60B: 1000*500*1150mm (30 groups of 150*150*150mm concrete specimens)
- Standard Model 60B: 1370*500*1150mm (40 groups of 150*150*150mm concrete specimens)
- Model 90B: 1550*650*1150mm (60 groups of 150*150*150mm concrete specimens)
- Model 90B Cement - Concrete Standard Curing Box
- 1. Temperature controller accuracy: ±1℃
- 2. Temperature difference inside the box: ≤2℃
- 3. Humidity control: ≥95% (adjustable)
- 4. Working voltage: 220±10%
- 5. Heating power: 2000W
- 6. Compressor power: 158W
- 7. Internal dimensions: 1550×650×1150mm (60 groups of concrete specimens)
III. Working Principle
This instrument uses a precise platinum resistance Pt100 as the temperature - sensing element. A high - performance (A/D) converter converts the temperature and humidity equivalent voltage signals transmitted by the multi - way switch into corresponding digital signals, which are then processed by a single - chip microprocessor for display and control. When the temperature is lower than the lower limit of the set temperature control value, the instrument outputs a heating control signal. When the temperature is higher than the upper limit of the set temperature control value, the instrument outputs a refrigeration control signal. When the temperature enters the window area (CER set area) of the set control value, the instrument stops heating or refrigerating and enters a constant - temperature state. When the humidity is lower than the upper limit of the set humidity control value, the instrument outputs a humidifying signal. When the humidity is higher than the lower limit of the set humidity control value, the humidifying stops.
IV. Instructions for Use
1. Place the instrument in a well - ventilated, dry place. Use it indoors at an ambient temperature of 2 - 38℃, a relative humidity of not more than 85%, and without strong vibrations and strong electromagnetic field interference.
2. After the instrument is placed stably, check whether the door switch is flexible and whether electrical, refrigeration, and other components are damaged.
3. Add water to the water tank inside the box to a level 2 cm above the electric heating tube and below the bottom - most shelf. Open the side door, fill the humidifier water tank with distilled water, fill the plastic balls in the temperature - humidity measurement wet - and - dry box with water, and soak the gauze in the water.
4. Insert the power plug into a 220V socket with good grounding. Press the power switch, and the instrument will automatically enter the working state.
5. At the factory, the instrument has been programmed with a standard setting procedure. The temperature control value is 20.0℃±1.0℃, and the humidity control value is 95%±1.5%. Without special requirements, do not change the control program. Otherwise, the temperature and humidity control may exceed the technical range. If you need to change the control value data, you can modify the program according to the temperature controller manual.
V. Instrument Working Parameters (Factory - Standard Program Settings)
1. Temperature control value: 20.0℃
2. Temperature control upper limit (based on the control value): +1℃
3. Humidity control value: 95％
4. Temperature control lower limit (based on the control value): - 0.5℃
5. Humidity control upper limit (based on the control value): 1％
6. Humidity control lower limit (based on the control value): 1％
The SJ - 40A Mixing Mortar Standard Curing Box is suitable for standard curing of mortar specimens in scientific research and quality inspection departments. It adopts an intelligent temperature and humidity control system, which can accurately command functions such as heating, cooling, humidifying, and dehumidifying, and automatically switch between functions to achieve dynamic balance of temperature and humidity inside the box, creating a standard environment for specimen conditioning and testing.
Mortar Curing Box Technical Indicators
- Controlled temperature: 20.0±2.0℃
- Controlled humidity: 40 - 80±5％
- Refrigeration power: 150W
- Heating power: 600W
- Temperature measurement accuracy: ≤0.2℃
- Humidity measurement accuracy: ±3.0％
- Applicable range: 10℃ - 35.0℃
- Voltage: 220±10V
Precautions
1. The box should be used in an environment that is well - ventilated, dry, flat, and free of corrosive media.
2. After the box is placed in position, it needs to stand still for 24 hours before being powered on. It must use a regulated power supply with effective grounding. The wiring should be "neutral" on the left and "phase" on the right. After a power outage, turn off the machine. When restarting, there must be an interval of more than 3 minutes to ensure the normal service life of the compressor.
3. In daily use, pay attention to maintaining the water level in the humidifier water tank and the cocoon - shaped plastic box of the humidity control instrument sensor to avoid affecting normal use.
Usage Method
1. After the box is placed in position and stands still for 24 hours, connect the effective ground wire and adjust the box to be level. Add distilled water to the cocoon - shaped plastic box of the humidity control instrument sensor, and put one end of the gauze into the box.
2. Open the side door, remove the humidifier nozzle, take down the transparent water tank, unscrew the bottom cover of the water tank counter - clockwise, fill it with clean cold water (distilled water is preferred), screw the cover tightly, put it back on the humidifier, turn on the power switch (the power indicator light is on), and adjust the spray volume knob to the maximum position.
3. Check the set values of the temperature and humidity controller. The temperature and humidity set values have been adjusted at the factory. (Temperature control: upper limit 21.5℃, lower limit 18.5℃, humidity control value: 50％).
4. Connect the power supply, turn on the power switch, and let the instrument start working. Put the specimens in after the temperature and humidity inside the box reach the set values.