LBT-HW Programmable High- and Low-Temperature Constant-Temperature and Constant-Humidity Test Chamber (Temperature and Humidity Configurable)
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Description
Product Introduction:
A high‑and‑low temperature test chamber, also known as a programmable constant‑temperature and constant‑humidity test chamber, is suitable for reliability testing of industrial products under high‑ and low‑temperature conditions. It can simulate real‑world and complex natural environments, enabling environmental simulation—covering high temperature, low temperature, and alternating/cyclic variations—for products across a wide range of industries, including raw materials, electronic devices, automobiles and motorcycles, aerospace, military equipment, food, and metal construction materials. This equipment supports product design and refinement, helping to meet relevant standards and facilitating testing, certification, and inspection processes.
The performance indicators comply with the requirements of GB 5170, Parts 2, 3, 5, and 6‑95, “Verification Methods for Basic Parameters of Environmental Test Equipment for Electrical and Electronic Products: Low-Temperature, High-Temperature, Constant Damp Heat, and Cyclic Damp Heat Test Equipment.”
Basic Environmental Testing Procedures for Electrical and Electronic Products — Test A: Low-Temperature Test Method GB 2423.1-89 (IEC 68-2-1)
Basic Environmental Testing Procedures for Electrical and Electronic Products — Test B: High-Temperature Test Method GB 2423.2-89 (IEC 68-2-2)
Basic Environmental Testing Procedures for Electrical and Electronic Products — Test Ca: Constant Damp Heat Test Method GB/T 2423.3-93 (IEC 68-2-3)
Basic Environmental Testing Procedures for Electrical and Electronic Products — Test Da: Alternating Damp Heat Test Method GB/T 423.4-93 (IEC 68-2-30)
Product Features:
I. Structure and Materials:
1. Inner box material: Stainless steel sheet (SUS #304)
2. Outer casing material: stainless steel sheet with an atomization finish, or cold-rolled steel with baked enamel (optional)
3. Insulation material: rigid foam and glass wool
4. Air Supply Circulation System:
(1) One 90W motor
(2) Stainless steel extended shaft
(3) Multi-blade fan (SIRCCO FAN)
5. Door: Single-panel door with a single window, left-hand opening, and handle on the right side.
(1) Window: 260 x 340 x 40 mm, with a three-layer vacuum insulation.
(2) Flush-mounted handle
(3) Back button: SUS #304
II. Refrigeration System:
1. Compressor: Fully hermetic compressor imported from France
2. Refrigerant: Environmentally friendly refrigerant R404A
3. Condenser: Fin-type with built-in cooling fan
4. Evaporator: Finned, multi-stage, with automatic load‑capacity adjustment
5. Other accessories: desiccant, refrigerant flow window, expansion valve
6. Expansion System: Capacity-Controlled Refrigeration System
III. Control System:
Original 7-inch 880‑display LCD touch panel, featuring on-screen dialog‑based data entry; simultaneous programmable control of temperature and humidity; curve display; and setpoint/display value trend curves. It can display multiple alarm types separately, and in the event of a fault, the screen provides fault information to facilitate troubleshooting and prevent operator errors. Equipped with multiple PID control loops and precise monitoring functions, with all data presented directly on the display.
1. Controller specifications:
a. Accuracy: Temperature ±0.1°C, Humidity ±1%RH
b. Resolution: Temperature ±0.1°C, Humidity 1% R.H.
c. Temperature slope: 0.1–9.9, user‑adjustable
d. Features upper and lower limit standby and alarm functions
e. Temperature and humidity input signal selection: PT 100 Ω × 2 (dry-bulb and wet-bulb)
f. Temperature and humidity output: 4–20 mA
g.6 Group P.I.D control parameter settings, automatic P.I.D calculation, and automatic dry-and-wet-bulb correction.
2. Screen Display Function:
a. Touch-based input, with options displayed directly on the screen
b. Direct display of setpoint (SV) and process value (PV) for temperature and humidity (in English)
c. Can display the current program number, segment number, remaining time, and loop count.
d. Cumulative Operating Time Function
e. The setpoints for temperature and humidity are displayed as graphical curves, with a real-time display of the program curve’s execution.
f. Features a dedicated program editing screen for 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: a total of 5,000 segments
c. Repeatable commands: Each command can be executed up to 9,999 times.
d. The program is developed using an interactive, dialogue-based approach and includes functions such as editing and clearing.
e.SEGMENTS Time setting 0–530 hours 59 minutes
f. Features power‑off program memory, automatically restarting and resuming execution upon power restoration.
g. The graphical curve can be displayed in real time during program execution.
h. Features date and time adjustment functionality
i. Button and Screen Lock (LOCK) Function
IV. Standard Configuration:
A. Power cable, 4.0 mm x 3 cores
B. One 232 output terminal
C. Stainless Steel SUS #304 Square Perforated Steel Shelf
D. Four stainless steel adjustable-spacing clips
E. One 11W energy-saving window light fixture
F. One test port with a diameter of 50 mm on the left side of the enclosure, accompanied by one stainless steel port cover.
G. One piece of nonwoven fabric for standard testing
H. One set of controller user manual and one set of operating manual
Technical Specifications:
| Project | 80L | 100L | 150L | 225L | 408L | 800L | 1000L |
| Inner box dimensions (W×D×H mm) | 400*400*500 | 500*400*500 | 500*500*600 | 600*500*750 | 800*600*850 | 1000*800*1000 | 1000*1000*1000 |
| Outer carton dimensions (W×D×H mm) | 870*950*1700 | 870*1000*1700 | 970*1150*1750 | 1150*1250*1900 | 1300*1400*1950 | 1400*1500*2000 | 1500*1500*2000 |
| Optional temperature range | 0~150℃, -20~150℃, -40~150℃, -50~150℃, -60~150℃, -70~150℃, 70~150℃ | ||||||
| Optional humidity range | 20%～98%R.H. | ||||||
| Power supply | 220V/6KW | 220V/6.5KW | 220V/7KW | 220V/7.5KW | 220V/8KW | 220V/8KW | 220V/8KW |
| Temperature fluctuation degree | 0.5 | ||||||
| Temperature deviation | ≤2℃ | ||||||
| Heating time | Rises from ambient temperature to 150°C in approximately 40 minutes (no-load, nonlinear). | ||||||
| Cooling time | It takes approximately 60 minutes to cool from room temperature to -40°C (no-load, non-linear). | ||||||
| Humidity fluctuation degree | 3%R.H. | ||||||
| Humidity deviation | ≤3% | ||||||
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