Explosion Proof Environment Test Chamber Constant Temperature And Humidity Test Chamber

Item

Instructions

    Basic product introduction

Name

Explosion-proof constant temperature and humidity test chamber

Model

LR-B001

Quantity

1pcs

Brand

Innovative instrument

Satisfying criteria

1.GB11158 High temperature test box technical conditions

Technical conditions

2.GB10589-89 low temperature test box

3.GB10592-89 high and low temperature test box technical conditions

4.GB/T10586-89 Wet heat test chamber technical conditions

5. GB/T2423.1-2008 Low temperature test chamber test method

Pictures GB/T2423.2-2008 high temperature test box test method

GB/T2423.3-2006 Wet heat test chamber test method

GB/T2423.4-2008 Alternating damp heat test method

⒐ GB/T2423.22-2002 Test method for temperature variation

⒑ IEC60068-2-1.1990 Test method for low temperature test chamber

⒒ IEC60068-2-2.1974 Test method for high temperature test chambers

⒓ GJB150.3 high temperature test

⒔ GJB150.4 Low temperature test

⒕ GJB150.9 wet heat test

Descriptive use

    This test chamber provides high temperature, low temperature, high humidity, low humidity simulation environment to detect rubber, plastic, electronic products before and after the test of material and strength decay degree. The machine can also simulate the container environment to detect the fading and shrinking of rubber and plastic under high temperature and humidity. Test the heat resistance, cold resistance, dry resistance and moisture resistance of various materials. Suitable for electronics, electrical appliances, batteries, universities, research institutes, inspection and quarantine Bureau, paper products, food, vehicles, auto parts, metal, chemical, building materials and other industries factory unit quality control testing

Feature

Perfect shape design high quality appearance equipment noise small operation simple safe and reliable

Performance index

Interior dimension

(W * H * D) 800mm*1000mm*500mm

Carton size

((W * H * D) 1300×1900×1100 mm

Container Internal Volume

400L

Temperature range

-25℃ ~ +150℃

Humidity range

20～98% R•H adjustable

Temperature and humidity control range 

Temperature and humidity control range

emperature ≤±0.5℃; Humidity ≤±2%

Equilibrium of distribution

Temperature ≤±1.5℃; Humidity ≤±3.0%

Heating up time

Average 2~5℃/ min, non-linear no-load temperature rise

Cooling time

Average 0.7~1℃/ min, nonlinear no-load cooling

Temperature limit

Maximum temperature +150℃; Minimum temperature -25℃

Box structure

Brief introduction to the box structure

The whole is divided into three combinations of laboratory, electric control cabinet and machine bin: the upper left side is the laboratory, which is composed of the inner chamber of the thermal insulation layer. The electric control cabinet is located on the right side, and the panel is mainly composed of temperature controller, switch button and fault protection indicator light. The machine compartment is placed under the test room and is composed of accessories such as filter, solenoid valve, line part and compressor.

Shell material

Plate paint

Interior material

SUS#304 stainless steel plate 

Insulation material

100mm Rigid polyurethane foam or glass fiber, fire resistant, meet environmental requirements

Door

Hinged single door, in order to prevent condensation or frost on the edge of the door frame and door during low temperature test, the edge of the door frame and door is provided with an electric defrost device;

Seal

The door and frame of the test box are sealed with double silicone rubber strips, which are resistant to high and low temperature, anti-aging, and have good sealing performance

Inspection window

The single door is equipped with a 3-layer vacuum large glass observation window, and there is no frost and condensation on the surface during any test.

Illumination

LED AC220V 1 energy-saving lamp, installed on the window, explosion-proof and moisture-proof

Instrument connection

The body is equipped with a Φ50mm hole, a soft plug and a hole cover. It can be used for external test power cord or signal cable

Instrument connection

The bottom of the machine adopts 4 sets of high-quality fixed universal movable wheels (easy to move) and flat foot cups (adjust the balance of the body).

Explosion door

The top of the box is equipped with an explosion-proof pressure relief door

Explosion door

There are four explosion-proof chains on both sides of the door

Fire sprinkler interface

The top of the equipment is equipped with a set of docking fire spray. If the product explodes and catches fire, the equipment will automatically open the fire spray and extinguish the open flame

Commodity shelf

There are 2 stainless steel storage racks with adjustable height in the box.

Temperature and humidity system

Heater

Taiwan imported stainless steel fin type heating pipe

Humidifier

Split type humidifier cylinder design

Humidification system

Water tank to pumping motor, pumping motor has double float control, the lower float ball falls to start pumping, the upper float ball floats to pump off, the advantage of the double float control pumping motor, the motor will not pump frequently.

Split humidifier tank

Large transparent glass window

It can clearly observe the water level and the cleanliness of the humidifier barrel

Water quality filter

Filter the dirt inside the water, but also easy to disassemble and clean

water suction pump

Delta quiet self-priming pump, low noise, stable performance, with filter (easy to clean water pump)

water tank

Built-in movable water tank 1 (easy to clean)

Water shortage warning device

Air circulation system

Electrical machinery

"Yizheng" synchronous acoustic mute motor

Air transport mode

The high-temperature circulating fan is adopted, the motor is installed outside the inner box, the stainless steel extended shaft extends to the box, and the multi-wing aluminum alloy fan wheel is installed at the end of the long shaft. Special heat insulation measures and heat dissipation system improve the safety of the motor, and the motor has a high temperature self-protection function.

Special adjustable sheet air supply circulation system to ensure the temperature uniformity in the box.

Air transport mode

Refrigeration system

Refrigeration methods are divided into vapor compression refrigeration, absorption refrigeration, vapor injection refrigeration, gas expansion refrigeration, thermoelectric refrigeration.

Among the above refrigeration methods, vapor compression refrigeration is the most economical and most widely used refrigeration method, and it is also the most commonly used refrigeration method in environmental test equipment. The principle is to use the evaporation potential of environmentally friendly freon and other liquids to absorb heat from the cooled object and achieve refrigeration. (Single stage refrigeration cycle diagram) is a diagram of the vapor compression refrigeration cycle process. The liquid that is throttled into the evaporator by the expansion valve absorbs the latent heat of evaporation from the surrounding objects and evaporates. After evaporation, it becomes a low-temperature and low-pressure gas that is inhaled by the refrigeration compressor. After being compressed by the compressor, it becomes a high-temperature and high-pressure gas into the water-cooled or air-cooled condenser, where it is cooled into a high-pressure liquid, and then enters the evaporator through the expansion valve. This cycle is repeated, absorbing heat from the low temperature to achieve cooling, and then releasing heat from the high temperature. In the refrigeration cycle shown (single-stage refrigeration cycle diagram), a change from one state to another is called a process. There are four processes in the refrigeration cycle. The following is a brief description of four processes in the refrigeration cycle.

(1) Evaporation process: through the expansion of the low pressure wet steam after throttling, in the evaporator from the surrounding medium heat absorption refrigeration, and gradually increase its dryness. In this way, the gas coming out of the evaporator has become dry saturated steam or slightly superheated steam. During evaporation, the temperature and pressure of the refrigerant remain unchanged.

(2) compression process: after the completion of refrigeration, the vapor from the evaporator enters the refrigerator, and after compression, the temperature and pressure rise sharply. Therefore, the gas discharged by the refrigerator becomes a hot steam with higher superheat. During the compression process, the entropy of the refrigerant remains unchanged.

(3) Condensation process: the high temperature and high pressure superheated vapor discharged from the refrigerator enters the condenser for heat exchange with cooling water or air, so that the superheated vapor gradually becomes saturated vapor, and then becomes saturated liquid. When cooled with cooling water, saturated liquid temperature

The degree will continue to drop, there will be too cold. The pressure remains constant during condensation.

(4) throttling process: the liquid from the condenser is throttled through the expansion valve or capillary and other throttling devices to become low-temperature and low-pressure wet steam, and the enthalpy value of the refrigerant is unchanged during the throttling process.

The above four cycle processes are continuously circulated in turn to achieve the purpose of refrigeration. In order to complete the thermodynamic process of the refrigeration cycle, it is necessary to compose the compressor, heat exchanger, pipeline, pipeline accessories, etc. - a system, the system is called the refrigeration system. Single-stage compression refrigeration means that the refrigerant vapor is only compressed once, and its minimum evaporation temperature can be controlled at -30 ° C ~-40 ° C. When a lower test temperature is needed, a cascade refrigeration system is usually used, that is, two single-stage compression refrigeration systems are stacked together. One system is the high temperature part, using the medium temperature refrigerant; the other system is the low temperature part, using the low temperature refrigerant. The high-temperature part of the evaporator and the low-temperature part of the condenser overlap to form a condensing evaporator.

Refrigeration compressor

Imported from France "Taikang" fully enclosed compressor or "Emerson" fully enclosed compressor

Condenser

The high temperature and high pressure vapor discharged from the compressor is cooled into a liquid; The heat released is carried away by water or air. Can be divided into water-cooled, air-cooled

Evaporator

Vaporize a liquid into a gas; Absorb heat or dehumidify

Device for drying and filtering

Absorb the residual water and acidic substances in the refrigerant of the refrigeration system and filter out the solid impurity particles in the system, copper cutting, etc., protect the normal operation of the expansion valve and the capillary tube, and avoid ice blockage and water blockage

Oil separator

The Emerson oil separator separates the refrigerant and liquid sprayed from the compressor to protect the compressor from the loss caused by the accumulation of refrigerant liquid (generally used in overlapping systems or large single systems).

Heat exchanger

High efficiency ST plate heat exchanger

Check valve

The main function of the check valve is to prevent a large number of high temperature and high pressure steam inside the rotary compressor from flowing back to the evaporator when it is shut down, so that the evaporator heats up, resulting in reduced refrigeration efficiency, that is, to control the flow of refrigerant under different conditions of hot and cold

Refrigeration system technology

The low-temperature connection pipe is made of high-quality oxygen-free copper pipe, and the well-known "Rosenberg" electric pipe bender is used for pipeline production, nitrogen filling welding, and 48-hour high pressure and leakage prevention process to ensure welding quality

Pipe welding: High quality copper pipe nitrogen protection welding method, so that the copper pipe inside smooth and no oxidation, to avoid the traditional welding method caused by oxide impurities in the inner wall of the copper pipe into the refrigeration system to the compressor damage.

Vibration reduction measures: the compressor bottom installation of the vibration reduction spring and anti-vibration soft cushion combination vibration reduction; Anti-vibration hoses and C-shaped elbows are added to the pipes of the refrigeration system to prevent the rupture of copper pipes caused by vibration and temperature changes, resulting in refrigerant leakage and affecting the overall performance of the system.

Noise control: Low speed and high air volume condensing fan is used on the condenser to achieve low noise effect

Energy-saving device

1) Danfoss electronic expansion valve. Refrigerant flow servo control (i.e., "static balance" technology of cooling without heating and heating without cooling)

2) Electronic expansion valve, as a new type of control component, has already broken through the concept of throttling mechanism, it is an important part of the intelligent refrigeration system, but also an important means and guarantee for the real realization of refrigeration system optimization.

3) Product features:

1. Fully enclosed design, stepper motor drive

2. From full off to full on in a very short time

3. High accuracy, extremely long life

4. Flow rate change is linear, wide range of cold capacity

5. Continuous cooling capacity adjustment, no liquid hammer phenomenon in the refrigeration circuit

6. Motor and valve integrated, high reliability, ceramic valve plate and valve parts wear resistance

4) Main advantages

1. Realize the active control of the refrigeration system, instead of the fixed proportion adjustment of the original thermal expansion valve. The output can be adjusted in advance and optimally for different modes and conditions.

2. Because the closed-loop control feedback front end of the electronic expansion valve is directly controlled by temperature and pressure dual sensors with high response, the optimal evaporator liquid supply can be provided, so that the refrigeration system can achieve excellent cooling capacity output in a wider working range.

3. Energy saving: the electronic expansion valve has a full range of self-adjustment + active adaptation to adjust the cooling capacity output, making the system more energy saving, and has the compressor energy regulation technology, which can achieve 70% energy saving effect.

Control system

Control system

Control mode

Balanced temperature and humidity control system (BTHC), control SSR by P.I.D. mode, so that the heating and humidification amount of the system is equal to the heat and humidity loss amount, so it can be used for a long time.

Controller characteristics

Independent research and development design

Programmable controller

LCD, color screen display

Touch screen direct button type

Temperature and humidity can be programmed simultaneously

Chinese and English display

7 inch true color screen

Large LCD controller with high contrast and adjustable backlight function.

Controller specification

Accuracy: Temperature ±0.1℃, humidity ±1%R.H

Resolution: Temperature ±0.1, humidity ±0.1%R.H.

With upper and lower limit standby and alarm function

Temperature and humidity input signal PT 100Ω×2 (dry ball and wet ball)

9 groups of P.I.D control parameter setting,P.I.D automatic calculation

Automatic wet and dry bulb correction

Picture display function

Screen conversation, no key input, screen directly touch options

The temperature and humidity setting (SV) and the actual (PV) value are displayed directly

Can display the current execution program number, segment, remaining time and number of cycles

Run cumulative time function

Temperature and humidity program setting values are displayed by graphical curve, with real-time display program curve execution function

With a separate program editing screen, each page can input at least 5 segments of temperature and humidity and time

English and Chinese can be switched at will.

The fault prompt screen is displayed.

The screen can be backlit

The screen display protection function can be used for timing, TIMER or manual shutdown Settings.

Program capacity and control functions

Groups of programs available: up to 120 PATTEN

Available memory capacity: Total 1200 SEGMENTS

Repeatable commands: Each command can be executed up to 999 times

The program is made in conversational style and has the functions of editing, clearing and inserting

SEGMENTS is set to 0 to 99Hour59Min

With power off program memory, automatically start and continue to execute the program function after the restart

The graphic curve can be displayed in real time when the program is executed

It has the function of booking start and shutdown

With date, time adjustment function

Key and screen LOCK function

Protector

Protector

1.Zero crossing thyristor power controller

2.Heating air burn protection switch

3.Compressor overpressure protection switch

4.Compressor overload and overcurrent protection switch

5.Phase loss protection switch

6.No fuse overload protector

7.Water tank protection switch

8.Fast heating and humidification insurance

Installation supplement

Service voltage

220V±10%  50HZ    

Power

6KW

Allowable use environment

0 ~30℃

Performance assurance environment

5 ~ 25℃

Cap screw

The left and right side of the fuselage Ø50mm test hole with a set of threaded cover

Non-woven fabric

Standard test nonwoven 5 pieces

Specification

Provide a copy when ordering  

      Specification

One copy of equipment manual

After-sales service commitment

After-sales service commitment

1, the product by the company's technical service department of professional technicians for after-sales service.

2, the customer shall provide the external conditions required for the installation of the instrument, and be responsible for the instrument in place, the corresponding other components, accessories in the installation state, the product by the engineering and technical personnel on-site free installation and commissioning, free training 1-2 system operators, after the completion of the installation and commissioning, the personnel of both sides signed on the commissioning acceptance report.

3, received customer service requirements, within eight hours to provide customers with a formal written maintenance plan, Dongguan city within 24 hours on-site service.

4, the product warranty period is 24 months, during the warranty period, the supplier will be free to repair and replace parts damaged due to quality reasons; Due to the failure of non-product quality problems, only the cost is charged. For the damage of spare parts outside the warranty period, the spare parts provided will only be charged for the cost, and the product will provide lifelong service and spare parts and wearing parts.