SIRAX Climatic–Altitude Chamber
SIRAX is the officially manufactured DOT climatic–altitude chamber by Il Disgelo, designed for combined environmental testing of temperature, humidity, and pressure, with high-altitude simulation up to 30,000 m.
It is intended for laboratories and R&D departments in the aerospace, defense, energy, advanced electronics, and scientific research sectors, where high precision, stability, and long-term repeatability are required.
The SIRAX platform integrates a high-performance vacuum system and a multi-stage climatic circuit, enabling reliable testing even under severe dynamic conditions, with rapid variations in temperature and pressure.
The control system is fully proprietary DOT, based on AltitudeClimaLogic, the same platform used on DRACARYS and VIBERION, with DiDrus supervision software for cycle programming, real-time monitoring, and data logging.
Structure and Architecture
The SIRAX chamber features a high-thickness AISI 304 stainless steel test chamber, corrosion-treated and designed to withstand repeated pressure and temperature cycles.
Main construction features:
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internal structure in AISI 304 stainless steel
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enhanced thermal insulation (200 mm)
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multi-stage refrigeration system with semi-hermetic compressors
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balanced air treatment and recirculation system
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vacuum system with rotary mechanical pump
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digital control with adaptive PID
The design is focused on test stability and result repeatability.
Climatic and Altitude Performance
SIRAX allows:
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altitude simulation up to 30,000 m
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pressure range from 1013 to 10 mbar
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depressurization from atmospheric pressure to 10 mbar in less than 30 minutes
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thermal gradient ≥ 3 °C/min
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accurate and simultaneous control of temperature, humidity, and pressure
Available Models – SIRAX Technical Table
| Parameter | SIRAX-504-40 | SIRAX-1000-40 | SIRAX-504-70 | SIRAX-1000-70 |
|---|---|---|---|---|
| Usable volume | 504 L | 1,000 L | 504 L | 1,000 L |
| Internal dimensions (W×D×H) | 700 × 900 × 800 mm | 1000 × 1000 × 1000 mm | 700 × 900 × 800 mm | 1000 × 1000 × 1000 mm |
| Temperature range | −40 °C to +150 °C | −40 °C to +150 °C | −70 °C to +150 °C | −70 °C to +150 °C |
| Temperature uniformity | ±2 °C | ±2 °C | ±2 °C | ±2 °C |
| Temperature fluctuation | ±0.5 °C | ±0.5 °C | ±0.5 °C | ±0.5 °C |
| Humidity range | 20 to 98 % RH | 20 to 98 % RH | 20 to 98 % RH | 20 to 98 % RH |
| Humidity accuracy | ±3 % RH | ±3 % RH | ±3 % RH | ±3 % RH |
| Thermal rate | ≥ 3 °C/min | ≥ 3 °C/min | ≥ 3 °C/min | ≥ 3 °C/min |
| Pressure range | 1013 to 10 mbar | 1013 to 10 mbar | 1013 to 10 mbar | 1013 to 10 mbar |
| Pressure accuracy | ±1 mbar | ±1 mbar | ±1 mbar | ±1 mbar |
| Vacuum system | Rotary mechanical pump | Rotary mechanical pump | Rotary mechanical pump | Rotary mechanical pump |
| Refrigeration system | Multi-stage | Multi-stage | Multi-stage | Multi-stage |
| Cooling | Water-cooled | Water-cooled | Water-cooled | Water-cooled |
| Test chamber material | AISI 304 stainless steel | AISI 304 stainless steel | AISI 304 stainless steel | AISI 304 stainless steel |
| Control system | AltitudeClimaLogic | AltitudeClimaLogic | AltitudeClimaLogic | AltitudeClimaLogic |
| Software | DiDrus | DiDrus | DiDrus | DiDrus |
| Connectivity | Ethernet, RS485, USB | Ethernet, RS485, USB | Ethernet, RS485, USB | Ethernet, RS485, USB |
| Power supply | AC 380 V – 50 Hz | AC 380 V – 50 Hz | AC 380 V – 50 Hz | AC 380 V – 50 Hz |
Note: all SIRAX models share the same DOT technological architecture. Additional configurations and accessories are available on request.
Control System and Connectivity
The AltitudeClimaLogic control system enables:
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programming of complex climatic and altitude test cycles
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real-time parameter visualization
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data logging and test traceability
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integration with automatic test equipment (ATE)
Accessories and Options
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heated observation window
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KF side ports for cables, sensors, and fluids
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KF-class test terminals / columns
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internal specimen racks (2 sets)
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internal video monitoring system
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additional temperature and pressure sensors
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advanced vacuum safety systems
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certified calibration
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integration with customer systems
Standards Compliance
The SIRAX chamber is designed for testing in compliance with major international standards:
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MIL-STD-810H ↔ IEC 60068-2
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MIL-STD-883 ↔ IEC 60749
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RTCA DO-160 ↔ EN 60068 / EN 61000
Positioning Within the DOT Range
SIRAX completes the DOT range, complementing traditional climatic chambers and enabling combined climatic and altitude testing within a single solution.
It is the ideal choice when altitude simulation becomes a critical test parameter.
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