I. Equipment Overview:                                        

The high- and low-temperature test chamber products simulate the patterns of temperature changes found in atmospheric environments. They are primarily designed for electrical and electronic products, as well as their components and other materials, to assess their adaptability under combined high- and low-temperature conditions during transportation and use. These chambers are utilized in various stages, including product design, improvement, verification, and quality inspection.

II. Equipment Functions:

1. The performance indicators meet the requirements of GB5170, 2, 3, 5, and 6-95 "Basic Verification Methods for Environmental Testing Equipment of Electrical and Electronic Products: Low-Temperature, High-Temperature, Constant Damp-Heat, and Cyclic Damp-Heat Testing Equipment."

2. Basic Environmental Test Procedures for Electrical and Electronic Products – Test A: Low-Temperature Test Method GB 2423.1-89 (IEC68-2-1); Basic Environmental Test Procedures for Electrical and Electronic Products – Test B: High-Temperature Test Method GB 2423.2-89 (IEC68-2-2); Basic Environmental Test Procedures for Electrical and Electronic Products – Test Ca: Constant Damp-Heat Test Method GB/T 2423.3-93 (IEC68-2-3)

3. Basic Environmental Test Procedure for Electrical and Electronic Products—Test Da: Alternating Damp-Heat Test Method GB/T 423.4-93 (IEC 68-2-30) Control Method and Features: The Balanced Temperature and Humidity Control System (BTHC) uses P.I.D. control with SSR, ensuring that the system’s heating and humidification output precisely matches the damp-heat loss rate, thus enabling long-term stable operation.

III. Main Technical Parameters:

1. Performance (Referring to the air-cooled type at room temperature 20°C, under no-load conditions)

1.1 Model: A (Inner Box Dimensions: W1000 × H1000 × D1000 mm)

B (Inner box dimensions: W1550 × H2150 × 1350mm)

1.2 Temperature Range: -40°C to 150°C

1.3 Temperature fluctuation: ±0.5℃

1.4 Temperature Deviation: ≤ ±2°C

1.5°C heating time: approximately 4°C/min (no-load, non-linear)

1.6 Cooling Time: Approximately 1°C/min (no-load, non-linear)

1.7 Humidity Range: 20%–98% R.H.

1.8 Humidity Fluctuation: ±3% R.H.

1.9 Humidity Deviation: ≤3%

1.10 Temperature and Humidity Control Range:

2. Structure and Materials:

2.1 Inner box material: Stainless steel plate (SUS #304, 1.0mm thick)

2.2 Outer box material: Stainless steel plate with matte finish (SUS #304, 1.0mm thick)

2.3 Insulation Materials: Rigid Polyurethane Foam and Glass Wool

2.4 Air Circulation System:

1.  
   1. 1 x 90W Motor
   2. Stainless Steel Extended Shaft
   3. Multi-blade Fan (SIRCCO FAN)

2.5 Box Doors: Single-panel door, single window, left-hand opening, with the handle on the right side

1.  
   1. Window, 270 x 360 x 40 mm, three-layer vacuum insulation
   2. Flat Embedded Handle
   3. Back button: SUS #304

3. Refrigeration System

3.1 Compressor: Fully hermetic compressor originally imported from France

3.2 Refrigerant: Environmentally friendly refrigerant R404A

3.3 Condenser: Fin-type with Cooling Fan

3.4 Evaporator: Finned Multi-Stage Automatic Load Capacity Adjustment

3.5 Other accessories: Desiccant, refrigerant flow window, service valve

3.6 Expansion System: Refrigeration System with Capacity Control

4. Control System

Originally imported from Korea, this product features a fully Chinese-language 7-inch LCD touch-panel display with graphical, dialog-based data input. It offers simultaneous programmable control of temperature and humidity, along with curve-display functionality—showing both setpoint and actual-value trends. The system can independently monitor multiple alarm conditions, displaying fault information directly on the screen to help users quickly identify and resolve issues, as well as prevent misoperations. Additionally, it includes advanced multi-group PID control capabilities and precise monitoring features, with all data clearly presented in an easy-to-read format on the screen.

4.1 Controller Specifications:

1. Accuracy: Temperature ±0.1℃ + 1 digit, Humidity ±1%RH + 1 digit
2. Resolution: Temperature ±0.1, Humidity 1% R.H.
3. Temperature slope: 0.1–9.9 is adjustable
4. Features standby and alarm functions with upper and lower limits
5. Temperature and humidity input signal selection: PT100Ω × 2 (dry bulb and wet bulb)
6. Temperature and humidity output: 4–20 mA
7. Six sets of P.I.D control parameter settings, P.I.D automatic calculation, and automatic dry-wet bulb correction.

4.1 Screen Display Function:

1. Touch-based input, with options displayed directly on the screen
2. Temperature and humidity setpoint (SV) and actual (PV) values are displayed directly (in English).
3. It can display the current program number, segment number, remaining time, and loop count.
4. Cumulative Operation Time Function
5. The setpoints for the temperature and humidity program are displayed as a graphical curve, with real-time display of the program curve execution.
6. Features a separate program editing screen, allowing direct input of temperature, humidity, and time.

3. Program Capacity and Control Functions:

a) Usable program groups: Up to 100 groups

b) Usable memory capacity: Total of 5,000 SEGMENTS

c) Repeatable commands: Each command can be executed up to 9,999 times

d) The program is created using a dialogue-based approach and features functions such as editing, clearing, and inserting.

e) SEGMENTS Time Setting: 0–530 Hours 59 Minutes

f) Features power-off program memory, automatically restarting and resuming program execution upon power restoration (capable of saving data for over 10 years)

h) Graphical curves can be displayed in real time during program execution

i) Features date and time adjustment functionality

g) Key and Screen Lock (LOCK) Function

5. Standard Configuration

a) Power cable 4.0 mm² x 3 cores

b) One USB export terminal

c) 2 Pieces of SUS#304 Stainless Steel Square Perforated Steel Shelf

d) 2 Sets of Stainless Steel Adjustable 40mm-Spaced Shelving Rails

e) One 11W energy-saving window light

f) One ψ50mm test port on the left side of the unit, complete with one stainless steel port cover and one silicone plug.

h) Standard test using 1 sheet of non-woven fabric

i) One set of controller user manual, one set of operation manual

6. Other Requirements

6.1 Online Software

6.2 Water-Cooled Cooling System

6.3 Surrounding Environment:

1. Permissible temperature range: 0–35°C
2. Performance guarantee range: 5–35°C
3. Relative humidity: Not more than 85%
4. Atmospheric pressure: 86–106 kPa
5. There are no strong vibrations nearby.
6. No direct sunlight or other direct heat sources.
7. Natural drainage outlet: *The drainage pipe must not have any protrusions along its length, and the house floor should not have extreme slopes.

6.4 Humidification water supply requirements: Purified water

6.5 Power Supply: 12 kW, 380 V, 50 Hz

7. Major Electrical Components (Complete Set of Testing Equipment)