Walk-in Cold Room Programmable Constant Temperature and Humidity Test Chamber for Environmental Climate Test Equipment

• Customization: Available
• After-sales Service: 2 Years
• Warranty: 1 Years
• Model NO.: BS-W-8000AD
• Application: Industry, School, Hospital, Lab, Test Equipment
• Customized: Customized
• Certification: CE, ISO
• Structure: Device
• Material: Stainless Steel
• Type: Test Machine
• Voltage: 380V
• Power: 32.5kw
• Gross Weight: 2500kg
• Cooling Method: Forced Air Cooling
• Compressor: French Taikang
• Temperature Range: -40℃~150℃
• Inner Capacity: 8000L
• Lead Time: 15-25days
• Packing: Wooden Box
• Resolution: Temperature: 0.01 °C Deg
• Control Stability: Temperature 0.5°C Deg
• Cooling Time: Average 1 Deg/Min, Non-Linear Cooling
• Heating Time: Average 3 Deg/Min, Non-Linear Heating
• Transport Package: Standard Export Strong Plywood Box
• Specification: 200*200*200(W*H*D)cm
• Trademark: BAOSHI
• Origin: China
• HS Code: 8479899990
• Production Capacity: 500 Sets Per Month
• Package Size: 370.00cm * 260.00cm * 230.00cm
• Package Gross Weight: 2500.000kg

Product Description

Custom size Walk-in Programmable constant temperature and humidity test chamber for  environmental climate test equipment

Walk-In Constant Temperature and Humidity Test Chamber
Product Design Specification (PDS)
 




(Appearance Reference Image. The actual product shall be the final standard.)

 

1. Technical Parameters

Item No.	Parameter Name	Technical parameters
1.1	Equipment Name	Walk-In Constant Temperature and Humidity Test Chamber
1.2	Equipment Introduction	The floor-standing constant temperature and humidity laboratory is a macroclimate simulation device designed for testing the aging performance of electrical and electronic products. It is suitable for evaluating thermal and humidity resistance in industries including new energy, automotive manufacturing, home appliances, semiconductors, electronics, aerospace, academic institutions, and instrumentation components. The system also conducts adaptability tests under extreme environmental conditions such as high temperatures, low temperatures, humid heat, and alternating humid-heat cycles.
	Product features	1,Using multi-channel, environmentally friendly and energy-saving (low noise) mechanical compression refrigeration system. All materials, components, and raw materials for this equipment, whether domestically produced or imported, are eco-friendly products. Based on the compression refrigeration characteristics of machinery, a dual-stage multi-way main-bypass system is adopted. The multiple main paths and bypasses can be automatically selected according to different operating conditions. The entire control system operates autonomously through intelligent control based on actual working conditions, replacing the traditional method of using thermostats to regulate heaters to offset cooling capacity. This achieves energy-saving effects by reducing energy consumption to just 80% of similar products. It also decreases the operational load on refrigeration compressors,minimizes equipment vibration and noise, and improves control precision. The refrigeration compressor's output adapts to various temperature change rates required by laboratories while controlling power consumption to enhance energy efficiency. Noise reduction measures are implemented throughout the structure and mechanical processes using sound absorption and noise elimination techniques, effectively minimizing overall equipment noise. 2. Self-developed multi-way and multi-stage throttling system (refrigeration system). The refrigeration system of this equipment is designed with different main and bypass capillary roads according to different working conditions of the system. The intelligent control system automatically controls the capillary throttle system according to working conditions, and automatically adjusts the flow size to achieve the purpose of temperature change, and the temperature field changes uniformly with minimal temperature fluctuation. 3. The broadband pressure balanced temperature control system is applied to realize rapid temperature control through the fast-converging PID adaptive algorithm. By integrating a temperature conditioning chamber, static pressure chamber,and centrifugal fan-driven forced air duct system, we ensure efficient heat exchange while delivering uniform airflow through the overhead perforated plate to every workspace (experimental area), achieving optimal temperature distribution. To accelerate thermal stabilization, our company collaborated with Weilun Corporation to develop a proprietary PID adaptive control algorithm. This intelligent control method continuously adjusts parameters based on real-time temperature data, ensuring rapid response, minimal overshoot, and highly stable performance throughout the process. 4,Realize remote visual control. The equipment features a human-machine interface and a touch-mode automated control system for seamless operation. It connects to remote computers via an RS485 communication interface, enabling network management and real-time monitoring. The system's graphical interface simplifies control operations, provides automatic fault alerts, displays energy-saving suggestions with visual indicators, and guides users through quick troubleshooting solutions.
1.3	Equipment Model	BS-B-8000AD
1.4	Effective Volume	8000L
1.5	Internal Chamber Dimensions	2000*2000*2000 (W*H*D)(mm)
1.6	External Dimensions	3250*2400*2350(W*H*D) (mm) ( Subject to the final confirmed 3D drawing )
1.7	Temperature Range	-40ºC~150ºC
1.8	humidity range	20~98%R. H (Temp. & Humidity Comparison Table)
1.9	Heating Rate	-40ºC ~ 150ºC ≥3ºC/min (Full-process Non-linearity & No-load Acceptance)
1.10	Cooling Rate	150ºC ~ -40ºC ≥0.7~1ºC/min (Full-process Non-linearity & No-load Acceptance)
1.11	Temperature and Humidity Display Accuracy	Temperature:0.01ºC Humidity:0.1%R.H
1.12	Temperature and Humidity Deviation	Temperature:±2ºC Humidity: When ≥75%RH, the humidity error shall be ≤+2 to -3%RH Humidity: When <75%RH, the humidity error shall be ≤+5%RH
1.13	Temperature and Humidity Fluctuation	Temperature:≤±0.5ºC Humidity:+2/-3%R.H
1.14	Temperature and Humidity Uniformity	Temperature:≤2ºC Humidity:+2/-3%R.H
1.15	Cooling Method	Water Cooling
1.16	Weight	2300KG
1.17	Power	380V/32.5KW
1.18	Others	All the above performance indicators refer to the data measured under the conditions of no load, no test sample, and ambient temperature of 25±2ºC. Operating Noise:70dB (measured at 1 meter from the chamber door and 1.5 meters in height).

1. Compliant Test Standards

Item No.	Standards	Explanation of Standards
2.1	General standards	GB/T2423.2-2008 Test Method: High Temperature
		GB/T 2423.1-2008 Test method: Low Temperature
		GJB150.4A-2009 Low Temperature Test Method
		GJB150.3A-2009 High Temperature Test Method
		G/BT 2423.4-2008/IEC6008-2-30:2005 Test Db: Alternating Damp Heat Method
		GBT 2424.6-2006 Environmental Testing for Electrical and Electronic Products - Performance Qualification Report of Temperature and Humidity Test Chambers
		GB/T10586-2006 Technical Specifications for Damp Heat Test Chambers
		GBT 2424.5-2006 Environmental Testing for Electrical and Electronic products - Performance Qualification Report of  Temperature Test Chambers.
		G/BT 2423.4-2008/IEC6008-2-30:2005 test Db: alternating wet heat method
2.2	Acceptance Execution Standards	Manufacturing Standards:GB/T10586-2006,GB/T10592-2008
		Verification Standards :GB/T5170.2-2017,GB/T5170.5-2016
		Technical Standards: Acceptance shall be conducted in accordance with the signed technical index requirements

1. Equipment Structure

Item No.	Description	Technical Specification Parameters
3.1	Cabinet Structure	The split frame structure is welded with national standard channel steel, which ensures the overall reliability and safety performance of the equipment with strong durability, low vibration and low noise during operation.
3.2	Inner Chamber Material	It adopts 1.0mm-thick SUS #304 stainless steel. l; the whole full welding treatment is adopted to ensure the sealing performance of the inner box, and the bottom reinforcement design ensures the bearing capacity of the bottom ≥500KG/M2 average load.
3.3	Outer Shell Material	It adopts cold-rolled steel plates with a thickness of 1.2mm, featuring double-sided spraying treatment and a blue-white color(Customizable according to customer requirements, color samples or color codes are available upon request).
3.4	Thermal Insulation Material	The thermal insulation layer has a thickness of 100mm and uses fire-resistant, high-strength rigid polyurethane foam insulation material. Thermal insulation coefficient: less than 0.0212 kcal/(m.hour).
3.5	Cabinet Door Structure	The double door is sealed with double-layer silicone rubber between the door and the box, which can withstand high and low temperature and resist aging to ensure the sealing performance. The door frame and edge are equipped with electric heating device to prevent condensation and frost, so as to avoid condensation on the surface of the box.
3.6	Test Observation Window	Set 1 vacuum multi-layer explosion-proof glass window, the window is designed to be frostproof: the window is coated with heating to prevent frost, so as to prevent water condensation; a safe high-brightness energy-saving lighting lamp is set above the observation window (which can be manually switched on and off).
3.7	Air Duct Components	It adopts a circulating fan with a motor, an aluminum extended shaft, and a high/low temperature-resistant aluminum alloy multi-blade circulating fan, achieving forced convection vertical diffusion circulation. The air outlet is adjustable.
3.8	Test Port	One test port with a diameter of 100mm is reserved on the left side of the chamber, and one set of silicone plug + sealing cover is provided.
3.9	Three-Color Indicator Light	Green for normal operation, yellow for standby, and red for fault alarm.
3.10	Drainage Trough	Drainage troughs are provided around the interior of the cabinet, facilitating the discharge of condensed water and preventing internal water accumulation.
3.11	Balance Hole	A pressure balance hole is installed inside the chamber to balance the pressure between the inside and outside of the chamber.
3.12	Swivel Caster	Swivel casters are installed at the bottom of the equipment, facilitating the relocation, movement and positioning of the equipment.
Assembly diagram

1. Circulation System

Item No.	Description	Technical Specification Parameters
4.1	Air Supply Method	It adopts a forced internal circulation mode with top air supply and bottom air return. The air deflector at the air outlet can disperse cold and hot air to the entire interior of the chamber, ensuring uniform and stable distribution.
4.2	Circulation Motor	It is a long-shaft motor, installed outside the chamber, avoiding the influence of temperature and humidity inside the chamber. The long shaft extends directly into the interior of the chamber, with silicone insulation and sealing.
4.3	Centrifugal Impeller	It is a multi-blade centrifugal circulating aluminum wind wheel, featuring light weight, large air volume, and high air pressure. Additionally, it exhibits resistance to high and low temperatures, a small expansion coefficient, and low operating noise.
4.4	Circulating Air Duct	The circulating air duct is matched with the refrigeration and heating system, and the sealing plate is closely attached to the evaporator and heating tube, allowing the circulating air to fully absorb the cold energy from the evaporator and the heat energy from the heating tube.
4.5	Sensor	Class A Platinum Resistance PT100+T Temperature and Humidity Sensor, featuring stable operation and accurate detection.

1. Refrigeration System

Item No.	Description	Technical Specification Parameters
5.1	Refrigeration Mode	Compressor-Based Refrigeration
5.2	Compressor	German "Bizer" fully enclosed compressor
5.3	Evaporator	High-Efficiency Multi-Stage Fin-and-Tube Evaporator with Hydrophilic Coating (Thickened Fin Type)
5.4	Condenser	Shell-and-Tube Condenser (Water-Cooled Type)
5.5	Refrigerant	Fluoride-Free Eco-Friendly Refrigerant, DuPont (USA) R404A
5.6	Thermal Expansion Valve	The core control logic of the thermal expansion valve is: The opening degree of the expansion valve is controlled by the superheat degree of the gaseous refrigerant at the evaporator outlet, thereby adjusting the flow rate of refrigerant entering the evaporator.
5.7	Oil Separator	The core function of the oil separator is to separate the refrigerating oil and refrigerant, allowing each substance to perform its respective function as required and preventing oil films from reducing heat exchange efficiency.
5.8	Filter-Drier	The filter-drier consists of two parts: the filter and the dryer. The filter is used to block solid particles such as iron filings, welding slag, and dirt, preventing them from clogging the passages; the dryer is used to absorb moisture circulating with the refrigerant, avoiding "ice blockage" inside the pipelines.
5.9	Solenoid Valve	Danfoss Solenoid Valve (for coarse adjustment of the cooling capacity of the entire refrigeration system)
5.10	Leak Detection Method	Nitrogen purging and pressure holding for 24 hours is adopted for leak detection testing of all pipelines in the entire system.
5.11	Vibration Damping Design	Compressor Base and Vibration Isolation Treatment: The base features a water-leakage prevention design. It is a self-evaporating waterproof base that effectively prevents condensed water from leaking out. Vibration isolation treatment is applied to moving components such as the compressor and fan, achieving a low-noise design.

1. Heating System

Item No.	Description	Technical Specification Parameters
6.1	Heating Method	It adopts an imported SSR (Solid-State Relay) for driving, featuring contactless control, no noise, no electric arc, and stable reliability.
6.2	Heating Tube	It adopts a stainless steel finned nickel-chromium wire high-speed heater.
6.3	Heating System and Electrical Components	It is a completely independent system that does not affect the refrigeration and humidification systems. Temperature control is achieved through microcomputer calculation and PID automatic adjustment; the output power changes based on the comparison result between the actual temperature value and the set temperature value, so as to achieve high precision, high efficiency, and high stability. Major low-voltage electrical components all adopt products from well-known brands: "Schneider" AC contactors and thermal overload relays, "OMRON" small intermediate relays, and Delixi signal lamps, switches, and circuit breakers.

1. Humidification System

Item No.	Description	Technical Specification Parameters
7.1	Humidification Method	It is a fully automatic humidification module system with integrated closed-loop humidity control, designed and manufactured using advanced technology. It is an improved and upgraded multi-functional integrated humidification system,featuring superior characteristics such as fast humidification, high efficiency, ultra-low failure rate, and higher reliability. It adopts SSR-driven contactless control and intelligent PID automatic calculation to adjust output power.
7.2	Water Level Control	It features automatic water level control and automatic water filling functions, which make the humidification system more efficient, the control more stable, and the equipment operation more reliable. These functions avoid the drawback of high failure rates in humidification systems and overall improve the equipment's reliability.
7.3	Humidifier	Closed-body structure, easy to install, can be installed on the outside of the room, the system structure is simpler, more efficient and practical.
7.3	Humidity sensor	Electronic temperature and humidity sensor: Select imported electronic temperature and humidity sensor.

1. Control System

Item No.	Description	Technical Specification Parameters
8.1	Control Method	Color Touch Screen + PLC Control System
8.2	Screen Display	7-inch screen with a resolution of 800*480, 65535 true colors, and LED backlight display; direct display of temperature and humidity set values (SV) and actual values (PV); Chinese/English language switchable display with true-color touch input; capable of displaying execution program number, segment number, remaining time, cycle times, and operation time; program editing and graphic curve display.
8.3	Temperature and Humidity setting	Set it independently according to the test temperature range requirements.
8.4	Data Logging	Built-in recording program, the memory in the controller can store 3 months of 24hour operation data. It can automatically generate temperature and humidity curve files, data, operation records, alarm records, etc., and can display set values and actual values, cycle numbers, temperature segments, temperature values, time, etc. in both digital and graphical forms.
8.5	External Connection	Communication methods such as USB, RS485, and LAN ports are supported, enabling external connection to a computer for full-function control, data storage, printing, and recording.
8.6	Running Mode	Rated value/program/slope running mode.
8.7	Input Method	RT100×2 (dry bulb and wet bulb) / 4~20mA, both built-in simultaneously
8.8	Output Method	Temperature×1, Humidity×1, END×1, RUN×1, T1~T4, TROUBLE×1, H1×1, TIME SIGNAL×3.
8.9	Display Precision	Temperature:0.01ºC Humidity:0.01%RHT Time:0.01 seconds
8.10	System Capacity	1~120 test programs (i.e., can be divided into 120 program groups), maximum 1~1200 steps (i.e., 1200 action steps), and single-step time up to 9999 hours 59 minutes.
8.11	Login Method	Chinese/English Name Login, Chinese/English Test Login, Operation Time Display.
8.12	Deviation Correction	It prevents parameter deviations caused by various factors; after correction, the temperature and humidity values can be more accurate and standardized.
8.13	System Functions	Sequence Control, Reservation Control, Power-off Recovery, Fault Display.
8.14	Password Control	Multi-level password protection can be set to prevent unauthorized use by non-operators and unauthorized modification of internal parameters.

1. Safety Protection Device

Item No.	Technical Specification Parameters
9.1	The compressor adopts a system high-low pressure protection (device).
9.2	Compressor Overload, Overcurrent, and Over-temperature Protection.
9.3	Compressor Oil Lack Protection.
9.4	Fan Overcurrent and Over-temperature Protection.
9.5	Humidifier Water Lack Protection.
9.6	Humidifier Dry-heating Over-temperature Protection.
9.7	Humidification Liquid Level Protection Indication.
9.8	Low-Temperature Non-Humidification Protection System.
9.9	Power Phase Loss Protection, Phase Sequence Error Protection, Phase Unbalance Protection, Leakage Protection.
9.10	Test Chamber Enclosure Grounding Protection.
9.11	Independent Over-temperature Protection for Working Chamber.

1. List of Main Accessories

Item No.	Accessory Name	Brand	Remarks
10.1	Control Instrument	Weishuo
10.2	Compressor	Birzel(Germany)
10.3	Refrigerant(R404)	DuPont(USA)
10.4	Air-Cooled Condenser	Customized
10.5	Evaporator	Customized
10.6	Expansion Valve	DANFOSS(Denmark)
10.7	Capillary Tube	Daikin(Japan)
10.8	Oil Separator	Emerson Oil Separator (USA)
10.9	Solenoid Valve	CASTEL Solenoid Valve (Italy)

1. Installation and Operating Conditions for Test Equipment

Key Point	Specific Requirements
Space Requirements: Positioning & Handling, Installation Footprint Dimensions, and Placement Environment Requirements
11.1 Installation Access It shall be able to pass through according to the external dimensions of the test chamber, with special attention to specific links such as corners, door entry dimensions, and elevator dimensions. For installation sites on upper floors or in underground vacant spaces, the floor load-bearing requirement of the site shall be ≥ 500kg/m².
11.2 Floor Space and Peripheral Relevant Dimensions
	Space around the equipment shall comply with the following: A: ≥ 60cm; B≥ 60cm; C≥ 80cm; D≥ 80cm
	The floor shall be level, with good ventilation, and free from flammable, explosive, corrosive gases and dust.
11.3 Other Environmental Requirements for Test Chamber Operation	Environmental Temperature Requirements		5~28ºC Ensure Optimal Performance
	Humidity Requirements		≤85%R.H
	Air Pressure Requirements		86KPa~106KPa
	Electromagnetic Environment		There shall be no strong vibration or strong electromagnetic radiation sources around the equipment.
	Site Drainage		A drainage floor drain shall be provided within 2 meters of the test chamber.
11.4 Safe Storage Conditions for Test Chambers	When the test chamber is not in use, the storage environment of the test chamber shall be maintained at a temperature consistently above 0ºC.
	If the storage environment temperature is below 0ºC, for water-cooled test chambers and humidity chambers, all residual water in the equipment shall be drained completely in a timely manner to prevent pipe damage caused by freezing.
Power and Related Conditions
11.5 Grounding Requirements		The grounding resistance shall be less than 4Ω, with independent grounding (i.e., TN-S grounding system), and a three-phase five-wire AC power supply shall be adopted (it is strictly prohibited to mix the neutral wire and ground wire).

1. Services

Item No.	Description	Service Content
12.1	Equipment Warranty Period	The supplier shall provide a 1-year warranty for the test equipment starting from the date of acceptance. During the warranty period, fees such as material fees and repair fees shall be waived (excluding damages caused by human factors or natural disasters). The supplier commits to providing lifelong free technical support and conducting equipment operation consultation and inspection twice a year.
12.2	Service Response Time	Upon receiving the customer's maintenance request notification, the supplier shall respond within 2 hours and arrive at the customer's site within 24 hours, making every effort to repair the product promptly. The company has sufficient spare parts to provide timely, fast, and high-quality services.
12.3	After-Sales Team	The company has a dedicated After-Sales Service Department, with more than 5 after-sales service engineers. Meanwhile, it has set up office-based service stations and built a comprehensive customer service system, as well as established customer files. In addition to providing technical consultation services to customers, the company is also responsible for collecting and organizing customer complaints and consultation information. It ensures that the problems and requirements raised by customers are handled in a timely manner, and tracks and verifies the handling status while establishing corresponding records. These efforts provide a basis for improving quality and enhancing products.
12.4	List of Randomly Included Documents	One copy each of the Product User Manual, Instrument Operation Manual, Product Certificate of Conformity, and Product Warranty Card.
12.6	Installation, Commissioning and Training	After the equipment arrives at the buyer's factory, our party shall be responsible for the on-site installation, commissioning and trial operation of the equipment. Meanwhile, our party shall provide free training to the buyer's staff to ensure that the buyer's relevant personnel can independently complete all tests specified in the contract, perform equipment maintenance and troubleshoot basic faults.
12.7	Installation, Commissioning and Acceptance	The buyer shall be responsible for providing the external conditions required for equipment installation in accordance with the supplier's requirements, and the installation shall be conducted by our company. The supplier shall be responsible for on-site installation and commissioning at the buyer's location. After the completion of installation and commissioning, personnel from both the supplier and the buyer shall sign the commissioning and acceptance report to confirm approval.

We have packing teams and shipping forwarder to pack and deliver your products!

Packing:
1. Out packing:Standard export wooden case.
2. Inner packing:With careful stretch film wrap product, hard wood board+ strong bandage to fix corners.
3. Checking teams: Specialized staff to inspect and classified your goods.

Shipping:
You can specify other shipping methods such as Airmail, FEDEX or DHL. We shall let you know about the shipping cost after receipt of your order. It's more preferable for you to provide us with your own FEDEX/DHL account number so that the delivery charge can be charged directly from your account.
IEC60695 Glow Wire Flammability Temperature Tester, Glow Wire Combustion Resistance Testing Machine, Glow Wire Burning Tester.
 

FAQ

1.Are your company a trading one or a factory ?

Factory + trade (integration), 18 years focusing on test instruments field, 6 years exporting experience.
OEM is also acceptable for us.

2.How to choose the most suitable products?
Our team will give you the best suggestion as long as you tell us what kind of test you need to do and the required specification.

3.What's the delivery term?
At most of time, we have stock in the factory. If there is no stock, normally, the delivery time is 15-20 working days after deposit receipt. If you are in urgent need, we can consider making special arrangement for you.

4.Do you accept customization service?
Yes, of course, we can not only offer standard machines, but also customized machines according to your request. Don't hesitate to tell us your requirement, we will try our best to meet your needs.

5.Can we visit your factory before order?
Yes, we warmly welcome and sincerely invite you or your team to visit our factory, we will help to arrange hotel and pick up you from airport.