Dew Point Test Chamber

One Product Name:Dew Point Test Chamber

1. Equipment model: RD/NL-1000

2. Capacity and size:

2.1 Nominal internal volume (L): 1000 L

2.2 Nominal inner box size (mm): W1000 × H1000 × D1000

2.3 External dimensions (mm): approximately W 1500 × H 1900 × D 1500

2.3 Observation window visible range (mm): W 450 × H 300 (located on the door) Quantity: 1

2.4 Lead hole (mm): φ 100 (located on the left side of the box) with silicone plug and stainless steel cover Quantity: 1

2.6 Test the lighting on the door with a protective cover.

2.7 Sample rack: Stainless steel plate with hole spacing of 30-40mm, load-bearing capacity (evenly distributed): 40kg

2.8 Wet Heat System Water Supply: Approximately 40L Storage Tank Side Drawer Type Water Tank

3. Performance:

3.1 Test environment conditions:

Dew Point Test ChamberSmooth airflow around, no high concentration dust, no corrosive or flammable/explosive gases

Environmental temperature: 5-35 ℃

Relative humidity ≤ 85% RH

3.2 Testing Method:

3.2.1 Temperature range: 0 ℃ to+150 ℃

3.2.2 Temperature fluctuation: ± 0.5 ℃

3.2.3 Temperature uniformity: ≤± 2 ℃ (unloaded)

3.2.4 Temperature change rate:

3.2.4.1 Heating rate: ≥ about 3 ℃~5 ℃/min (0 ℃~+150 ℃ no-load nonlinear)

3.2.4.2 Cooling rate: ≥ about 0.7~1.5 ℃/min (150 ℃~0 ℃ no-load nonlinear)

3.2.5 Humidity Range: During constant temperature and humidity testing: 20-98% RH (+20 ℃~+85 ℃)

During condensation test: RH (+0%, -5%, condensation process)

3.2.6 Relative humidity deviation: ± 3.0% RH to ± 3.0% RH

The above indicators are tested under the condition of no sample load inside the box (unless otherwise specified).

3.2.8 Meet the test standards:

GB/T2423.1-2008 Test A: Low temperature test method

GB/T2423.2-2008 Test B: High temperature test method

GB/T2423.3-1993 Test Ca: Constant Damp Heat Test

GJB150.3a-2009 High Temperature Test

GJB150.4a-2009 Low Temperature Test

GJB 150.9A-2009 Damp Heat Test

GB/T 2423.3-2006 Constant Damp Heat Test Method Cab

GB/T 2423.4-2008 Alternating Damp Heat Test Method Db

GB/T 5170.2-2008 Temperature Test Equipment

GB/T 5170.5-2008 Damp Heat Test Equipment

IEC 60068-2-1

IEC 60068-2-78

IEC 60068-2-14

Condensation test of K-15 together with component group in VW80000 standard

2、 Function Introduction:

1. Equipped with an adjustable sink

2. Air conditioning cabinet equipped with condensation device

3. The necessary amount of water can be converted into steam

4. Cut off the air conditioning control device during the condensation stage

5. Adjust the room temperature of the test space through a thermostatic water bath

6. The plastic cover has a temperature resistance of 85 degrees, and the inclination angle of the plastic cover top is α ≥ 12 °

2、 Refrigeration system:

1.Compressor: 1 set of fully enclosed French Taikang, which can reach a temperature of 25 degrees Celsius and a humidity of 70% during summer work;

2.Cooling method: air cooling;

3.Refrigerant: R404;

4.The entire system pipeline undergoes a 48 hour leak detection test with ventilation and pressurization;

5.The heating and cooling systems are independent;

6.Internal spiral refrigerant copper tube;

7.Slope evaporator;

8.The dry filter, refrigerant flow window, repair valve, oil separator, solenoid valve, and storage tank are all imported original parts.

3、 Electrical control system:

1.Temperature and humidity controller: Imported from South Korea, the "Three Yuan" high-precision touch screen temperature controller has precise and stable control, and long-term operation without drift.

2.Time relay: adjustable from 1s to 9999h, m, s;

3.Temperature and humidity sensor: PT100 high-precision dew point testing sensor is used for humidity testing, and an anhydrous electronic sensor is employed.

4.Execution components: ABB or Schneider AC contactors, small relays, solid-state relays

4、 Wet heat system water supply

4.1 External water supply: Distilled water, pure water, and deionized water are all available (with a resistivity greater than 500 Ω· m) (provided by the user)

4.2 Internal water supply method: water pump lifting

4.3 Water storage device: located on the front or side of the mechanical room

5、 Safety protection device

5.1 Refrigeration system:

5.1.1 Compressor Overpressure

5.1.2 Compressor motor overheating

5.1.3 Compressor motor overcurrent

5.2 Humidification system:

5.2.1 Heating tube dry burning

5.2.2 Abnormal water supply

5.2.3 Abnormal Drainage

5.3 Laboratory:

5.3.1 Adjustable Overtemperature Protection

5.3.2 Extreme Overtemperature of Air Conditioning Channels

5.3.3 Fan motor overheating

5.4 Other:

5.4.1 Main power phase sequence and phase loss protection. The main switch air switch of the power supply has overcurrent and short-circuit protection functions;

5.4.2 Leakage protection

5.4.3 Load Short Circuit Protection

5.44 Alarm Sound: When the test box malfunctions, the three color alarm light emits an audible and visual alarm, with an alarm sound of ≥ 80dB

5.45 Alarm Record: All alarms can be displayed on the panel and software, and historical alarm messages can be queried in the monitoring software

rest

5.46 Emergency switch: The test box is equipped with an emergency switch, which uses a red self-locking button. When the switch is pressed, the electrical part of the equipment or the main power supply will be cut off. The emergency switch is designed with a protective cover;

5.57 Safety signs: Warning labels shall be affixed to the operating parts of burns, frostbite, cuts, inhalation of toxic substances, burns, dust inhalation, electric shock, pinch injuries, harmful radiation, combustion, and explosions, and the lifelong reliability of the labels shall be ensured;

▍ Compressor

1) Imported compressors form a refrigeration unit;

Energy saving design: VRF technology using PID+PWM principle (electronic expansion valve servo control of refrigerant flow based on thermal energy conditions);

A, VRF (Refrigerant Flow Control) technology based on PID+PWM principle is used to achieve low-temperature energy-saving operation (electronic expansion valve servo control technology for refrigerant flow based on thermal energy conditions): In low-temperature working state, the heater does not participate in the operation, and PID+PWM is used to adjust the refrigerant flow rate and direction, regulating the three-way flow of the cooling pipeline, cold bypass pipeline, and hot bypass pipeline, achieving automatic constant working room temperature. This method can achieve a 30% reduction in energy consumption under low-temperature conditions. This technology is based on the ETS series electronic expansion valve from Danish company Danfoss, which can be used to smoothly adjust the cooling capacity when different cooling capacity requirements are met, that is, to achieve compressor cooling capacity adjustment when different cooling rate requirements are met

2) Refrigeration process: The protection measures for the compressor are fully considered in the design of the refrigeration system, such as automatic protection of the compressor suction and discharge pressure

■ Reliability:

The main refrigeration components are all used, such as French Taikang or German Gulun or Bitzer compressors, Danish DANFOSS pressure controllers, thermal expansion valves, sight glasses, American EMERSON oil separators, drying filters, American EMERSON or Italian CASTEL solenoid valves, globe valves, etc. Please refer to the attachment for details.

Cooling method

■ Air cooled (condenser) Air cooled high-efficiency forced convection fin type

The condenser is designed with drainage holes, which can drain the water in the condenser when not in use in winter, avoiding damage to the heat exchanger, valves, and pipelines caused by low temperatures.

The characteristics of the EK series are:

1. High filtration accuracy, with a filtration accuracy of 20 microns;

2. High water removal performance effectively prevents the deterioration of POE oil;

3. The outer coating is corrosion-resistant epoxy powder spray paint;

4. Anti vibration and seismic effects of steel shell;

5. The filter element is made of 25% active aluminum and 75% molecular sieve

The STAS series features:

1. It is a dry filter with replaceable filter elements, and the internal components are easy to install and replace;

2. The inner wall design has low resistance and pressure reduction;

3. The outer coating is corrosion-resistant epoxy powder spray paint;

4. Hard steel body, long service life;

5. Filtration capacity (with filter element): 40 microns;

6. Adopt high acid/water removal filter element

6、 Usage conditions (guaranteed by the user for the following conditions):

6.1 Venue:

6.1.1 The ground is flat, well ventilated, and free of flammable, explosive, corrosive gases and dust

6.1.2 There is no strong electromagnetic radiation source nearby

6.1.3 There is a drainage floor drain near the equipment (within 2 meters of the refrigeration unit)

6.1.4 Ground bearing capacity of the site: not less than 500kg/m2

6.1.5 Leave appropriate maintenance space around the equipment

6.2 Environmental conditions:

6.2.1 Temperature: 5 ℃~35 ℃

6.2.2 Relative humidity: ≤ 85% RH

6.2.3 Air pressure: 86-106kpa

6.3 Power Supply: AC380V

6.3.1 Allowable voltage fluctuation range: AC (1 ± 10%) 380V

6.3.2 Allowable frequency fluctuation range: (1 ± 1%) 50Hz

6.3.3 The grounding resistance of the protective grounding wire is less than 4 Ω; TN-S power supply or TT power supply

6.3.4 Require users to configure corresponding capacity air or power switches for the equipment at the installation site, and this switch must be independent and dedicated for the use of this equipment