LBT-255LR Thermal and Vacuum Environmental Test Chamber
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Description
Product Introduction:
This product series conducts thermal cycling tests on test specimens under vacuum conditions. It is suitable for use in the aerospace, intelligent manufacturing, new energy, electronic instrumentation, electrical materials, automotive, metallurgical, and electronic product industries, as well as for evaluating the performance characteristics of various electronic components in high‑temperature vacuum environments and for quality management purposes. It is also employed for drying, baking, and heat‑treating materials. Furthermore, it can simulate the vacuum, cold‑black, and solar radiation conditions of space in a ground‑based setting, enabling thermal vacuum and thermal balance tests. Additionally, it can replicate the extreme thermal conditions of the vacuum environment, allowing for thermal vacuum testing of specimens while effectively controlling, monitoring, and recording their temperatures in the vacuum chamber—providing essential conditions for research and testing of related aerospace products. During simulated testing, specimens are typically operated under working conditions, with both operational and environmental parameters measured.
Product Features:
l A single‑use, high‑temperature‑resistant silicone rubber door seal, integrally molded in one piece, is installed between the chamber and the glass door to ensure effective sealing and maintain a high vacuum level inside the chamber.
l Buckle-type elastic adjustment door lock, ensuring excellent vacuum integrity.
The enclosure is made of high-quality cold-rolled steel sheet, with an electrostatic powder-coated finish that provides a hard, durable coating and excellent rust resistance.
l The worktop is made of high-quality stainless steel, featuring rounded corners, a smooth and streamlined design, and easy cleaning.
The space between the cabinet body and the working chamber is filled with ultra-fine glass wool insulation, providing excellent thermal insulation and ensuring stable, accurate internal temperatures while minimizing environmental influences.
The chamber door features a double-layer tempered glass construction, allowing clear observation of the heated items inside while providing excellent thermal insulation. This effectively prevents burns to operators.
l The heater is mounted on the outer surface of the chamber to maximize temperature uniformity inside and facilitate interior cleaning.
Technical Specifications:
| Device Model/Name | LBT-255LR Thermal‑Vacuum Environmental Test Chamber, Space‑to‑Earth Environment Simulator, Thermal‑Vacuum Environmental Test Chamber |
| Temperature control range | -70~+120℃ |
| Vacuum chamber dimensions | 600*600*700mm (Width*Depth*Height) |
| Operating chamber dimensions | 620*470*370mm (Width*Depth*Height) |
| Ultimate vacuum level | Limit: 10⁴ Pa (i.e., 0.0001 Pa) |
| Temperature resolution | 0.1℃ |
| Temperature fluctuation degree | ±0.2℃ (under steady-state conditions) |
| Heating/cooling rate | The surface temperature of the thermal load plate increases at a rate of 1.0–3°C/min (with an accuracy of ±0.5°C). |
| Power Supply/Voltage | 380V/50Hz three-phase five-wire system |
| Nitrogen flow rate | 0~100 L/min |
| Equipment external dimensions | 1300*110*1800mm |
| Heating method | Built-in hot-and-cold plate (4 sides) |
| Main Pump System | Front-stage pump: scroll dry pump (rapidly starts to reduce pressure when dropping from atmospheric pressure to 10 Pa) Secondary pump: composite molecular pump (pressure reduction begins when the pressure drops from 10 Pa to 10⁻⁴ Pa) |
| Temperature Monitoring System | PT100 platinum resistance thermometer |
| Cooling and temperature reduction method | Imported compressor cascade refrigeration |
| Vacuum level display method | Ruibao standalone digital vacuum gauge with touchscreen display |
| Temperature display mode | Color touchscreen digital display; features real-time temperature recording, batch recording and query of curve data, and storage and historical review of alarm and fault logs. |
| Vacuuming method | Automatic vacuuming |
| Enclosure structure | An independent heating chamber is controlled, and the vacuum system is connected to the heating chamber via piping. |
| Equipment material | The inner liner is made of high-quality SUS304 stainless steel, while the outer frame is constructed from cold-rolled steel sheets welded to channel sections, with an electrostatic powder-coated finish. |
| Door seal material | The door closure tightness is adjustable, and the unit features an integrally molded, Japan‑imported fluorocarbon door seal to ensure a high vacuum inside the chamber. |
| Insulation material | High-Temperature-Resistant Fireproof Aluminum Silicate |
| Sensor | High-temperature thermocouple |
| Safety device | Over-temperature alarm that cuts off the heating power supply, leakage protection, filament‑breakage alarm, phase‑loss protection, grounding protection, and other safeguards. |
| Installed capacity | 11KW |
| Net weight of the entire machine | 550KG |
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E-mail:lbt@lbt.ltd
Address:Tianjin Jinghai Economic Development Zone