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Environmental Test Chambers: Interface and Output Options



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When selecting environmental test chambers, analyze the user-interface options carefully, based on your requirements. These may include:

  • control-panels inputs such as keypads, dials, and switches for adjusting ranges and controlling parameters
  • analog devices -- such as gauges, meters and old-style chart recorders (see image below)
  • digital alphanumeric displays
  • display screen (may be touch screen)

Some environmental test chambers may include a programmable logic controller (PLCs) that can send/receive signals to/from the PLC. Programmable chambers often include a computerized interface and application-specific software so that they may be controlled/monitored remotely. Chambers may also be network and web-enabled.


above: A modern Reach-In type Temperature/Altitude/Humidity Environmental Test Chambers from Russells Technical Products

An environmental test chambers may offer the following outputs:

  • analog voltage (normally a linear function of the measurement)
  • analog current (such as 4-20 mA)
  • pulse signals (may include: frequency or modulated frequency outputs such as sine waves, pulse trains, amplitude modulation (AM), and frequency modulation (FM))
  • switches or relays (may be used in logic circuits to trigger alarms)
  • radio signals (as in wireless broadband)

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Updated: Friday, 2016-12-30 17:01 PST