Accelerated Thermal Cycle Chamber / Environmental Test Chamber

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The Accelerated Thermal Cycle Chamber is ideal for test requiring rapid changes in specimen temperature, and covers various applications from JEDEC, IEC standards to screening. It features new technologies, such as a specimen temperature control function maintaining linear specimen temperature change rates during rapid thermal cycling, and temperature ramp control. S R LAb Instruments chamber meet JEDEC, IEC, and other international test performance standards. The units can be installed around the world for consistent testing at different facilities.

Compatible Test standards

IEC-60749-25: Semiconductor devices- Temperature cycling
IEC-60068-2-14 Nb: Environmental testing- Change of temperature
IEC-61147-5: Liquid crystal and solid-state display devices- Environmental, endurance and mechanical test methods
JESD22-A105-B: Solid State Devices, testing quality and reliability- Power and temperature cycling
SAE-J1211: Automotive components- Recommended environmental practices for electronic equipment design
IPC-9701: Performance test methods and qualification requirements for surface mount solder attachments.
IEC61215, 10.11 (JIS C-8990), IEC61646, 10.11 (JIS C-8991): To make an assessment of the module’s ability to withstand exposure to several environmental conditions during transportation and/or storage
JIS C-8917, JIS C-8938 : -40°C/+90°C
To make an assessment of the module’s ability to withstand exposure to several environmental conditions during transportation and/or storage.


Internal Finish

Interior made of vapour tight pre-polished 16 Swg 304 grade stainless Steel with adjustable/removable shelving.


External Finish

Outer material is 16 Swg CRCA/Stainless steel with primed and phosphate epoxy based electrostatic powder coating finishing for a pleasant appearance.



It’s environmentally friendly free of asbestos and CFC guarantees the best possible insulation values and hence, the lowest possible operating costs.

Workspace Conditioning

Air circulation within the chamber is Laminar airflow provided with suitable capacity of fan motor and impeller for uniform distribution of temperature and humidity to maintain within specified limits.

Heating System

Fast responding U-shaped jacketed air heaters are used to achieve the desired positive temperature. Air heaters are placed in the conditioning plenum such that there is no direct radiation from the heaters on to the test specimen.

Humidity Control System

A low-pressure free vapor moisture generator using direct vaporization system is used for stimulating the required humidity. Reservoir with automatic float switch/valve provided for maintain at appropriate level for continuous water supply to the humidity tank. The saturated humidified air to be circulated into the workspace.


De-Humidification System

A refrigeration based de-humidification system provided for avoid the condensation forming on test specimen as well as control the lower relative humidity. The desired level of lower humidity will be achieved by maintaining the precise dew point temperature. The output will automatically be activated based on the set point as well as in ramp up mode after a low temperature cycle.



Moreover, the test chamber is equipped with an adjustable safety cut-out against high and low temperatures. Low water level cut-off with alarm issued visually as well as acoustically. In addition, a potential-free contact is available. Every electrical functional circuit is equipped its own safety facility which shuts down the functional circuit affected or the entire test chamber in case of a malfunction.

Door & Gasket

Robust type hinges fitted on the right hand side of the chamber with front opening single door. Leak proof double lined silicon gasket will be provided.

Viewing Window

The multi pane window will consist 4 toughened clear glasses sealed with silicone and separated by spacers to form a completely vaccumised window.


Ports Holes

Even in the standard version of the equipment all sizes are equipped with two standard ports. These are located on the left or on the right side of the test chamber and can be used for inserting measurement and control cables, other supply connections or additional equipment.


The HygroClip series are digital humidity-temperature probes based on the Air Chip 3000 technology or 4 to 20 mA. These probes feature a UART serial interface and two 0..1 V linear analog output signals. The probes are designed for use with the HygroClip 2 generation of ROTRONIC humidity-temperature instruments. The probes maintain all of the benefits of the original HygroClip technology such as the possibility of hot-swapping probes and feature significant improvements in the area of measurement accuracy and functionality.


Controller System

PID/PLC based Color display Touch screen TFT provided with program logic controller. No. of programs & profile segments with ramp & soak duration provided for cyclic operation. The controller is able to communicate with many different types of hardware using high speed RS 232/485 communications ports and Ethernet/USB communications for fast downloads. Remote monitoring and operation. Internet explorer based comm. On board comms ports. Set value & process value with graphical display on main screen. Graphical trend and operating parameters of auto tune & calibration. PC communication facility for operating the chamber through PC & data logging option provided with log interval. The latest version software (user friendly) provided with controls & instruments. Fault indication.

Refrigeration System

A high boosted low temperature application sealed/semi sealed compressor is used to achieve and maintain the required negative temperatures. Non-CFC eco -friendly refrigerants are used with components complying to all international safety and environmental guidelines. The system is provided with adequate safety protection against excessive and low pressure and high pressure. Pressure gauges provided to indicate suction and head pressure. HP/LP cutoff switch and overload protection for the system. Oil separators with oil return & hot gas defrost system

Electrical Connection

415 V AC +/- 10%, 50 Hz, 3 phase/N/PE Or 230 V AC +/- 10%, 50 Hz.


Free Access

Cable ports are equipped on both left and right side, to ease specimen access and wiring.

Humidity Demineralizer Water Filter System

Demineralizer removes water impurities and minerals that can harm your test chamber. Cartridges will turn orange-brown when used and are easily replaceable. Additional demineralizer cartridges are available for overnight delivery.

Reverse Osmosis Water System

Water purification system for use with city/tap water. This option is not needed if chamber has demineralizer filter system.

Water Pressure Regulator

Water pressure regulator is recommended to regulate incoming water supply to <=25 psig.


LABRADAR: 21 CFR 11 compliant PC based software

Salient features

  • Universally accepted MODBUS protocol
  • Up to 253 instruments can be daisy chained on the RS 485 bus
  • Monitor/Download stored data from our range of supported products
  • User friendly and Reliable
  • User configurable on site
  • Paperless recorder
  • Recorder wiring
  • Thermocouple
  • Integrating hour meter with reset
  • Overcool protector
  • Emergency stop pushbutton
  • Cable port rubber plug
  • Anchoring fixtures
  • Chamber dew tray
  • Communication cables
  • Temperature recorder (digital)
  • Recorder terminal
  • Temperature attainment output
  • Additional overheat protector
  • External alarm terminal
  • Additional cable port
  • Specimen basket / shelf bracket
  • Casters
  • Interface
  • Power cable

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