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CLIMATIC-ALTITUDE TEST CHAMBER – SIRAX SERIES
Combined environmental testing of temperature, humidity and pressure at high altitude
The SIRAX is the official DOT climatic-altitude test chamber manufactured by Il Disgelo, designed for combined environmental testing of temperature, humidity and pressure, with high-altitude simulation up to 45,000 m.
It is intended for test laboratories and R&D departments operating in the aerospace, defence, energy, advanced electronics and scientific research sectors, where high levels of accuracy, 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 temperature and pressure variations.
The control system is fully proprietary DOT, based on AltitudeClimaLogic, the same platform used on the DRACARYS and VIBERION product lines, with DiDrus supervision software for cycle programming, real-time monitoring and data logging.
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Request a dedicated technical consultation.
Our specialists will support you in configuring the most suitable solution for your testing requirements.
Structure and Architecture
The SIRAX chamber is built with a high-thickness AISI 304 stainless-steel test space, corrosion-treated and designed to withstand repeated pressure and temperature cycles.
Main construction features
Internal structure made of AISI 304 stainless steel
Reinforced thermal insulation (200 mm)
Multi-stage refrigeration circuit with semi-hermetic compressors
Balanced air treatment and recirculation system to ensure thermal and climatic uniformity
Vacuum system with rotary mechanical pump
Digital control with adaptive PID regulation
The overall design is focused on test condition stability and repeatability of results, even during combined and highly demanding test cycles.
Climatic and Altitude Performance
The SIRAX allows:
altitude simulation up to 45,000 m
pressure range: 1013 to2 mbar
depressurization: from atmospheric pressure to 10 mbar in less than 30 minutes
standard heating and cooling rates ≥ 3 °C/min, according to IEC 60068-3-5
accurate and simultaneous control of temperature, humidity and pressure
Control System and Connectivity
The DOT AltitudeClimaLogic control system enables:
programming of complex climatic and altitude test cycles
real-time visualization of all test parameters
data logging and full test traceability
integration with Automatic Test Equipment (ATE)
Supervision is provided by DiDrus software, accessible locally or remotely via Ethernet connection.
Standard connectivity includes Ethernet, RS485 and USB.
Available Models –SIRAX Technical Table
| Parameter | SIRAX 504-40 | SIRAX 1000-40 | SIRAX 504-70 | SIRAX 1000-70 |
|---|---|---|---|---|
| Usable volume | 504 L | 1000 L | 504 L | 1000 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 of change | ≥ 3 °C/min | ≥ 3 °C/min | ≥ 3 °C/min | ≥ 3 °C/min |
| Pressure range | 1013 to 2 mbar | 1013 to 2 mbar | 1013 to 2 mbar | 1013 to 2 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 space material | AISI 304 stainless steel | AISI 304 stainless steel | AISI 304 stainless steel | AISI 304 stainless steel |
| Control system | DOT AltitudeClimaLogic | DOT AltitudeClimaLogic | DOT AltitudeClimaLogic | DOT 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.
Special configurations and additional accessories are available on request.
Options and Accessories
heated observation window
KF side feedthroughs for cables, sensors and fluids
KF-class test terminals / columns
internal specimen racks (2 sets)
internal video monitoring system
additional temperature and pressure sensors
advanced vacuum safety systems
certified calibration
integration with customer systems
Standards Compliance
The SIRAX chamber is designed for testing in compliance with major international standards, including:
MIL-STD-810H ↔ IEC 60068-2
MIL-STD-883 ↔ IEC 60749
RTCA DO-160 ↔ EN 60068 / EN 61000
Positioning within the DOT Range
SIRAX completes the DOT range, complementing traditional climatic test 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.
