Ci4400 Weather-Ometer

The new Atlas Ci4400 Weather-Ometer® is the most advanced instrument yet providing easy and effortless operation, unmatched uniformity, increased capacity and a sleeker design, delivering unparalleled value and performance.

Design and engineering innovations in the airflow, irradiance and control systems have dramatically reduced variability in critical test parameters. As a result, the Ci4400 achieves new levels of temperature, humidity and light exposure uniformity.

  • 6500 W water-cooled xenon arc lamp system
  • Total exposure area of 7,300 cm2 (1,130 in2)
  • 3-tier inclined specimen rack with removable sections
  • Full color 15" touch screen user interface display of all test parameters
  • Direct setting and control of irradiance: 340nm, 420nm, or 300-400nm
  • Direct setting and control of BPT/BST
  • Direct setting and control of relative humidity
  • Direct setting and control of chamber air temperature
  • Display of diagnostic messages
  • 14 factory pre-programmed test methods
  • Space for 12 custom programs; sub-cycle capability
  • Multi-language capability (Chinese, Czech, English, French, German, Japanese, Korean, Polish, Russian, Spanish, Turkish)
  • Streaming data output via Ethernet or USB port. USB thumb drive included
  • SmartLightTM monitor verifies that correct light capsule is installed
  • Specimen and rack spray
  • Filter combinations available to meet all common test methods
  • Air intake filter
  • CS-9 xenon lamp cooling system
  • Water purity indicator with alarm
  • Test status indicator light
  • Fold-out tray to hold sample racks, logbooks, consumables, or laptop computers
  • Easy access to chamber for routine maintenance
  • Calibrated xenon reference lamp or Xenocal for Ci calibrator
  • Chamber viewing window in door
  • Universal electrical configurations to meet local frequency, voltage, and electrical requirements
  • Designed to meet CE, UL, ISO, EN, and CSA safety requirements
  • Automatic test countdown based on time or radiant exposure
  • VibraSonicTM Humidification System


  • XenoCal irradiance calibration device for independent irradiance calibration and measurement at the sample plane
  • Auxiliary filter lantern for meeting special test requirements
  • Specimen Holders available to accommodate many sample types
  • LiquiAirTM self-contained xenon lamp cooling system (top or wall mount available)
  • All-In-One-Sensor (AIOS) for control of all test parameters on the sample exposure plane
  • Dual Black Panel Temperature (BPT) and Black Standard Temperature (BST) Measurement/Control including uninsulated BPT and BST sensors
  • Monitoring of second wavelength: 300-400 nm, 340 nm, or 420 nm
  • All-In-One-Sensor (AIOS) for control of all test parameters on the sample exposure plane
  • WXView II Data Acquisition System - Web-based application to allow users to securely access instruments connected to their company network, download archived files, and other functionality

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