+44 (0) 1628 850611

AR Series High Performance Environmental Test Chambers with Wide Temperature & Humidity Control Ranges

When it comes to environmental test chambers, ESPEC stands for quality and reliability. The AR Series Environmental Test Chambers, in particular, are engineered to exceed expectations, offering unmatched consistency and precision which have earned ESPEC a solid reputation globally. They are designed for performance that meets the rigorous demands of many testing environments.

The AR Series Environmental Test Chambers offer fast temperature cycling and extensive control over both temperature and humidity. When a product or specimen is tested, it can generate its own heat & moisture. In this instance the chambers will automatically adjust to maintain the correct test parameters, changing temperature and humidity as required.


When you choose ESPEC’s AR Series Test Chambers, you’re not just investing in a product with superior performance, you’re investing in peace of mind. ESPEC offers a comprehensive 3-year warranty on all parts and materials, showcasing their unwavering faith in the quality and reliability of their chambers.  With ESPEC, your confidence is a priority.

Select the ideal model from the AR Series to meet your specific capacity and performance needs. 32 models are available, offering temperature ranges from -70°C to +180°C and humidity levels from 10% to 98% RH, with change rates between 5K/min and 18K/min.


  • Temperature & Humidity Range
    • Minimum temp: -70゜C
    • Maximum temp: +180゜C
    • Humidity (ARSF only): 10 to 98%orh
  • Temperature Change Rate
    • 10K/min. – 15K/min and 18K/min between -45゜C ó +155゜C
    • Ideal for tests in conformance with IEC and automotive part standards


  • Totally Frost Free. (ARSF)
  • Heat Loads of up to 9000W
  • High-Accuracy Temperature & Humidity Control
  • Energy Saving Controls

Fast rate temperature and humidity stabliisation time 

The AR series environmental testing chambers achieve fast temperature and humidity stabilisation by minimising fluctuations as the chamber approaches the set-point (during testing from room temperature to 85°C/85% RH). The test chambers use a specimen temperature control sensor to monitor and control the temperature of the object under test and the uniform temperature distribution minimises variations in test results to provide precise and accurate testing.

Save Energy with the Eco-Operation function 

The new eco-operation function can reduce power consumption by up to 85% during temperature and humidity tests at 85°C/85% RH.

  • Compatible with existing products – by changing software.
  • Compatible with AR Series
    *Not compatible with rapid-rate temperature cycle type ARGF/ARSF Series 

Remote monitoring and control via an advanced web application

No software is needed to remotely monitor the cabinets. An innovative web browser application enables monitoring and control of the chamber via a mobile PC, tablet, or smartphone using the chamber’s standard Ethernet/LAN port. Multiple chambers can be connected wirelessly, ensuring control is always maintained.

Email alert
When an alarm is triggered, an e-mail is sent to the registered PC or mobile address. Notifications can also be sent upon test completion.

Copy your test programs, output data on USB memory
No PC is needed to copy and transfer your test profiles from one chamber to another. You can also download temperature and humidity data from the chamber for editing on your PC.


Supports heat loads up to 4500W during temperature testing

The AR Chambers support powered specimens and can handle up to 4500W of heat load during temperature testing. They conform to ISO12100 and IEC standards (60204, 61000, EN50581) and meet CE marking requirements based on EU directives, including the Low Voltage Directive, EMC Directive, Machinery Directive, Pressure Equipment Directive, and RoHS Directive.


All the Espec AR series environmental test chambers meet the following Global Safety Standards:
ISO12200 (safety of machinery), ISO14121 (Risk Assessment), IEC61000-6-2, IEC61000-6-4 (EMC), EN50581 (RoHS)


Test Standard Conformance

  • IEC 600068-2-1: Cold
  • IEC 60068-2-2: Dry Heat
  • IEC 60068-2-14: change of temperature with specified rate of change
  • IEC 600068-2-30 Damp heat cyclic
  • IEC 60068-2-38 Composite temperature/humidity cyclic test
  • IEC 60068-2-78: Damp heat, steady sate
  • IEC 61747 (5.2.7) Liquid crystal and solid-state display devices Environmental endurance and mechanical test
  • ISO 16750-4 (5.3): Road vehicles (temperature cycling)


AR series Standard Type chambers Brochure

AR Series Chambers
Standard Type


AR series Rapid Rate Temperature Cycling Brochure

AR Series Chambers
Rapid Rate Temperature Cycling

Video Environmental Stress Chamber AR series (Rapid-Rate Temperature Cycle Type)

Support when you need it

from expert people

Our after sales service and ability to support existing environmental test installations, from planned maintenance schedules and emergency repairs to full on-site refurbishment mean our customers equipment retains optimal performance and up time.