Upgraded 150L with computerized constant temperature and humidity test chamberIntroduction:

1The outer gallbladder is processed and formed using (t=1mm) A3 steel plate CNC machine tool, and the surface of the shell is sprayed with plastic for a smoother and more beautiful appearance

2. The inner liner is made of imported (SUS304) mirror stainless steel plate

3. Insulation material: high-density glass fiber cotton The insulation thickness is 80mm

4. Mixing system: Adopting a long axis fan motor and a stainless steel multi blade impeller that is resistant to high and low temperatures, to achieve strong convection and vertical diffusion circulation

5. Double layer high tensile sealing strips with high temperature resistance are used between the door and the box to ensure the sealing of the testing area

6. Using non reactive door handles makes operation easier

7. The bottom of the machine adopts high-quality fixed PU movable wheels

8. The observation window is made of multi-layer insulated tempered glass, with a laminated conductive film on the inside (allowing for clear observation of the test process)

9. The test hole (on the left side of the machine) can be used for external testing power or signal lines (the aperture or number of holes needs to be increased and indicated)

Upgraded 150L with computerized constant temperature and humidity test chamber

technical parameter

1. Temperature range:- 40℃～150℃

2. Humidity range: 20% to 98% R.H

3. Temperature uniformity: ≤± 2 ℃ (when unloaded)

4. Humidity uniformity:+ 2% -3%R.H

5. Temperature fluctuation: ≤± 0.5 ℃ (when unloaded)

6. Humidity fluctuation: ± 2%

7. Temperature deviation: ≤ ±2℃

8. Humidity deviation: ≤ ±2%

9. Cooling rate: 0.7-1.0 ℃/min

10. Heating rate: 1.0-3.0 ℃/min

11. Time setting range: 0-999 hours

12. Power supply voltage: 380V ± 10%

13. Total equipment power: 3KW~15KW

4、 Box structure

1. The box adopts an integral structure.

2. The inner side of the box is made of 1.0mm SUS304B stainless steel plate, and the outer side is made of 1.0mm cold-rolled steel plate sprayed with plastic. The insulation material is ultra-fine glass insulation cotton.

3. The door seal adopts double-layer silicone rubber sealing material.

4. The observation window is made of multi-layer conductive film tempered hollow glass, with a size of 200 × 300mm. In order to prevent frosting of the glass at low temperatures, a specially designed built-in heating wire is specially designed to surround it, and a lighting lamp is installed to provide illumination for observation.

5. There is a 50mm test hole with a plug on the side of the box. The plug material is low foaming silicone rubber, which can withstand high and low temperatures and has insulation effect.

6. There is an air conditioning cabinet installed at the rear of the box workshop, in which equipment such as evaporators, electric heaters, humidifiers, fans, and fan volutes are installed.

7. Place the temperature sensor at the air outlet.

The air supply method inside the test chamber is upward air supply and downward return air supply.

The constant temperature and humidity test chamber has been widely used in the fields of electronics industry, defense technology, chemical engineering, mechanical manufacturing, aerospace, etc. Its produced constant temperature and humidity test chamber adopts the internationally superior German design.

So how is the constant temperature and humidity test chamber maintained and cleaned in daily work?

1. Cleaning and maintenance of the inside and outside of the constant temperature and humidity test chamber

(1) The constant temperature and humidity test chamber should be cleaned of internal impurities before operation.

(2) Clean the distribution room at least once a year

Above, when cleaning, you can use a vacuum cleaner to remove indoor dust.

(3) The exterior of the box should also be cleaned at least once a year, by wiping it with soapy water before cleaning.

2. Inspection and maintenance of humidifiers in constant temperature and humidity test chambers. The water stored in the humidifier should be replaced once a month to ensure clean water quality. The humidification water tray should be cleaned once a month to ensure smooth water flow.

3. During the operation of the constant temperature and humidity test chamber, the set value of the over temperature protection should be increased by 20 ℃~30 ℃. When the temperature inside the test chamber rises to the set point for over temperature protection, the power supply to the heater stops, and the "OVERHEAT" over temperature warning light lights up but the fan still runs. If it runs for a long time without supervision, please make sure to check whether the over temperature protector is properly set before operation [the wet bulb over temperature protector is set to 120 ℃].

4. The condenser of the constant temperature and humidity test chamber should be regularly maintained on a monthly basis. Use a vacuum cleaner to remove the dust attached to the condenser's heat dissipation mesh or use high-pressure air to spray off the dust.

5. Replacement of wet bulb test cloth in constant temperature and humidity test chamber. When the surface of the test cloth is not clean or hardened, or after completing temperature control, the test cloth must be replaced before continuing with temperature and humidity bulb control. The test cloth should be replaced about every three months. When replacing, the temperature measuring body should be wiped with a clean cloth. When replacing the new test cloth, it should be cleaned first.

6. Check and adjust the water level of the wet bulb in the constant temperature and humidity test chamber. The water level in the water tank should not be too high, causing water to overflow from the tank or too low, resulting in abnormal water absorption of the wet bulb test cloth, which affects the accuracy of the wet bulb. The water level should be kept about six tenths full. The adjustment of the water level in the water tank can adjust the height of the water tank.