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Over 70 different Global-N models allow you to choose the size and performance best suited for your test applications. Temperature cycling rates from 5 to 20°C/min. are possible. Two different ultimate low temperatures are available: -35°C or -70°C. The Global-N series require the least amount of floorspace for this level of performance.

  • Five chamber sizes: 114, 380, 470, 800, and 1000 liters (4, 12, 16, 28, and 35 cubic feet)
    Four cubic foot model has the interior size of a benchtop, but rates up to 30°C/m
  • Temperature cycling as fast as 20°C per minute
  • Reliable Scroll compressors on most models
  • Humidity testing capability also available
  • Casters, shelf, and cable port are standard
  • CE-mark or ETL-listed electrical panel conforming to UL 508A

These chambers feature the classic ESPEC look of stainless steel with a new, modern style. The control console is on the door, making the footprint of the unit even more compact. A simple, but secure, door latch is easier than ever to use.

ESPEC can add safety options for testing lithium-ion batteries or other products. See the options tab for a list or the Battery brochure below.

Advanced GL Control System

Operating an environmental test chamber has never been easier, thanks to the GL Control System. The user interface is available from a 10-inch touchscreen or remotely via a web browser. Standard USB and Ethernet interfaces simplify programming and data acquisition, while API functions enable seamless integration with other hardware or software. Test the GL Control system here.

Features for Global-N Temperature Cycling Chambers
  • GL Control System with 10" color touch screen, data & program transfer via USB External Memory port, remote access with Ethernet via browser, RestFUL API, or direct
  • High performance, reliable Copeland Scroll compressors*
  • Lower sound levels, even for air-cooled models (click on model numbers to see specs)
  • One 4" (100mm) diameter cable port with flexible silicone plug
  • Heavy-duty casters with adjustable feet for leveling unit
  • Refrigeration gauges and hinged service panels for easy maintenance
  • Non-metallic thermal break around the doorframe for thermal integrity
  • Dew tray on the door to catch drips when opened
  • Adjustable stainless steel shelf with heavy-duty support rails, supports 100 lbs.

* Models without 'L' suffix have Copeland Discus compressors


Get A Fast, Free Price Quote

Photo of Global-N Temperature Cycling
Fast Temperature Cycling: 5, 10, 15 or even 20°C/min.

Product Suggestions
  • Looking for fast cycling in a smaller chamber? See: BTZ-4200
  • Need a larger chamber than 35 cu. ft.? See: Platinum
  • Don't need fast cycle rates? See: Platinous
ESPEC Humidity Testing Chambers
Model Number Interior Dimensions
(W x D x H)		 Interior Volume Temperature Range Humidity Control Change Rate
(heat/cool)		 Notes
EGNZ4-5NWL 19.6" x 15" x 23.6" 4 cu. ft. -65 to 180°C No up to 30°C/min.
EGNZ12-4NAL 23.6" x 29.2" x 33.5" 12 cu. ft. -70 to 180°C No up to 6.5°C/min. Quiet built-in air-cooled condenser
EGNZ12-6NAL 23.6" x 29.2" x 33.5" 12 cu. ft. -70 to 180°C No up to 11°C/min. Quiet built-in air-cooled condenser
EGNZ28-4NAL 39.4" x 31.5" x 39.4" 28 cu. ft. -70 to 180°C No up to 3°C/min. Quiet built-in air-cooled condenser
EGNZ28-6NAL 39.4" x 31.5" x 39.4" 28 cu. ft. -70 to 180°C No up to 5.5°C/min. Quiet built-in air-cooled condenser
EGNX28-6NAL 39.4" x 31.5" x 39.4" 28 cu. ft. -70 to 180°C Yes up to 6°C/min. Quiet built-in air-cooled condenser
EGNX16-7.5NWL 29.5" x 29.3" x 33.5" 16 cu. ft. -70 to 180°C Yes up to 15°C/min.
EGNX28-4NAL 39.4" x 31.5" x 39.4" 28 cu. ft. -70 to 180°C Yes up to 3°C/min. Quiet built-in air-cooled condenser
EGNL12-6NAL 23.6" x 29.2" x 33.5" 12 cu. ft. -35 to 180°C Yes up to 13°C/min. Quiet built-in air-cooled condenser
EGNL28-4NAL 39.4" x 31.5" x 39.4" 28 cu. ft. -35 to 180°C Yes up to 5°C/min. Quiet built-in air-cooled condenser
EGNL28-6NAL 39.4" x 31.5" x 39.4" 28 cu. ft. -35 to 180°C Yes up to 9°C/min. Quiet built-in air-cooled condenser
EGNX12-4NAL 23.6" x 29.2" x 33.5" 12 cu. ft. -70 to 180°C Yes up to 6.5°C/min. Quiet built-in air-cooled condenser
EGNL12-4NAL 23.6" x 29.2" x 33.5" 12 cu. ft. -35 to 180°C Yes up to 9°C/min. Quiet built-in air-cooled condenser
EGNZ12-4NWL 23.6" x 29.2" x 33.5" 12 cu. ft. -70 to 180°C No up to 6.5°C/min.
EGNX28-6NWL 39.4" x 31.5" x 39.4" 28 cu. ft. -70 to 180°C Yes up to 6°C/min.
EGNX28-4NWL 39.4" x 31.5" x 39.4" 28 cu. ft. -70 to 180°C Yes up to 3°C/min.
EGNZ12-6NWL 23.6" x 29.2" x 33.5" 12 cu. ft. -70 to 180°C No up to 11°C/min.
EGNZ12-7.5NWL 23.6" x 29.2" x 33.5" 12 cu. ft. -70 to 180°C No up to 16°C/min.
EGNZ28-6NWL 39.4" x 31.5" x 39.4" 28 cu. ft. -70 to 180°C No up to 6°C/min.
EGNZ28-4NWL 39.4" x 31.5" x 39.4" 28 cu. ft. -70 to 180°C No up to 3°C/min.
EGNZ28-12NWL 39.4" x 31.5" x 39.4" 28 cu. ft. -70 to 180°C No up to 13.5°C/min.
EGNX28-12NWL 39.4" x 31.5" x 39.4" 28 cu. ft. -70 to 180°C Yes up to 13.5°C/min.
EGNX12-7.5NWL 23.6" x 29.2" x 33.5" 12 cu. ft. -70 to 180°C Yes up to 16°C/min.
EGNL28-4NWL 39.4" x 31.5" x 39.4" 28 cu. ft. -35 to 180°C Yes up to 5°C/min.
EGNL28-12NWL 39.4" x 31.5" x 39.4" 28 cu. ft. -35 to 180°C Yes up to 16°C/min.
EGNL12-6NWL 23.6" x 29.2" x 33.5" 12 cu. ft. -35 to 180°C Yes up to 13°C/min.
EGNL28-6NWL 39.4" x 31.5" x 39.4" 28 cu. ft. -35 to 180°C Yes up to 9°C/min.
EGNL28-7.5NWL 39.4" x 31.5" x 39.4" 28 cu. ft. -35 to 180°C Yes up to 13°C/min.
EGNX12-6NWL 23.6" x 29.2" x 33.5" 12 cu. ft. -70 to 180°C Yes up to 11°C/min.
EGNX12-4NWL 23.6" x 29.2" x 33.5" 12 cu. ft. -70 to 180°C Yes up to 6.5°C/min.
EGNL12-4NWL 23.6" x 29.2" x 33.5" 12 cu. ft. -35 to 180°C Yes up to 9°C/min.
EGNZ28-15NW 39.4" x 31.5" x 39.4" 28 cu. ft. -70 to 180°C No up to 20°C/min.
EGNX28-15NW 39.4" x 31.5" x 39.4" 28 cu. ft. -70 to 180°C Yes up to 20°C/min.
EGNZ16-4NAL 29.5" x 29.3" x 33.5" 16 cu. ft. -70 to 180°C No up to 6°C/min. Quiet built-in air-cooled condenser
EGNZ16-4NWL 29.5" x 29.3" x 33.5" 16 cu. ft. -70 to 180°C No up to 6°C/min.
EGNZ16-6NAL 29.5" x 29.3" x 33.5" 16 cu. ft. -70 to 180°C No up to 13°C/min. Quiet built-in air-cooled condenser
EGNZ16-6NWL 29.5" x 29.3" x 33.5" 16 cu. ft. -70 to 180°C No up to 13°C/min.
EGNZ16-7.5NWL 29.5" x 29.3" x 33.5" 16 cu. ft. -70 to 180°C No up to 15°C/min.
EGNX16-4NAL 29.5" x 29.3" x 33.5" 16 cu. ft. -70 to 180°C Yes up to 6°C/min. Quiet built-in air-cooled condenser
EGNX16-4NWL 29.5" x 29.3" x 33.5" 16 cu. ft. -70 to 180°C Yes up to 6°C/min.
EGNX16-6NAL 29.5" x 29.3" x 33.5" 16 cu. ft. -70 to 180°C Yes up to 13°C/min. Quiet built-in air-cooled condenser
EGNX16-6NWL 29.5" x 29.3" x 33.5" 16 cu. ft. -70 to 180°C Yes up to 13°C/min.
EGNX12-6NAL 23.6" x 29.2" x 33.5" 12 cu. ft. -70 to 180°C Yes up to 11°C/min. Quiet built-in air-cooled condenser
EGNZ35-12NWL 39.4" x 39.4" x 39.4" 35 cu. ft. -70 to 180°C No up to 14°C/min.
EGNZ35-15NW 39.4" x 39.4" x 39.4" 35 cu. ft. -70 to 180°C No up to 18°C/min.
EGNZ35-4NAL 39.4" x 39.4" x 39.4" 35 cu. ft. -70 to 180°C No up to 9°C/min. Quiet built-in air-cooled condenser
EGNZ35-4NWL 39.4" x 39.4" x 39.4" 35 cu. ft. -70 to 180°C No up to 9°C/min.
EGNZ35-6NAL 39.4" x 39.4" x 39.4" 35 cu. ft. -70 to 180°C No up to 9°C/min. Quiet built-in air-cooled condenser
EGNZ35-6NWL 39.4" x 39.4" x 39.4" 35 cu. ft. -70 to 180°C No up to 9°C/min.
EGNX35-12NWL 39.4" x 39.4" x 39.4" 35 cu. ft. -70 to 180°C Yes up to 14°C/min.
EGNX35-15NW 39.4" x 39.4" x 39.4" 35 cu. ft. -70 to 180°C Yes up to 18°C/min.
EGNX35-4NAL 39.4" x 39.4" x 39.4" 35 cu. ft. -70 to 180°C Yes up to 9°C/min. Quiet built-in air-cooled condenser
EGNX35-4NWL 39.4" x 39.4" x 39.4" 35 cu. ft. -70 to 180°C Yes up to 9°C/min.
EGNX35-6NAL 39.4" x 39.4" x 39.4" 35 cu. ft. -70 to 180°C Yes up to 9°C/min. Quiet built-in air-cooled condenser
EGNX35-6NWL 39.4" x 39.4" x 39.4" 35 cu. ft. -70 to 180°C Yes up to 9°C/min.
EGNU12-4NAL 23.6" x 29.2" x 33.5" 12 cu. ft. -35 to 180°C No up to 9°C/min. Quiet built-in air-cooled condenser
EGNU12-4NWL 23.6" x 29.2" x 33.5" 12 cu. ft. -35 to 180°C No up to 9°C/min.
EGNU12-6NAL 23.6" x 29.2" x 33.5" 12 cu. ft. -35 to 180°C No up to 13°C/min. Quiet built-in air-cooled condenser
EGNU12-6NWL 23.6" x 29.2" x 33.5" 12 cu. ft. -35 to 180°C No up to 13°C/min.
EGNU28-12NWL 39.4" x 31.5" x 39.4" 28 cu. ft. -35 to 180°C No up to 16°C/min.
EGNU28-4NAL 39.4" x 31.5" x 39.4" 28 cu. ft. -35 to 180°C No up to 5°C/min. Quiet built-in air-cooled condenser
EGNU28-4NWL 39.4" x 31.5" x 39.4" 28 cu. ft. -35 to 180°C No up to 5°C/min.
EGNU28-6NAL 39.4" x 31.5" x 39.4" 28 cu. ft. -35 to 180°C No up to 9°C/min. Quiet built-in air-cooled condenser
EGNU28-6NWL 39.4" x 31.5" x 39.4" 28 cu. ft. -35 to 180°C No up to 9°C/min.
EGNU28-7.5NWL 39.5" x 31.5" x 39.4" 28 cu. ft. -35 to 180°C No up to 13°C/min.
EGNL16-4NAL 29.5" x 29.3" x 33.5" 16 cu. ft. -35 to 180°C Yes up to 7°C/min.
EGNL16-4NWL 29.5" x 29.3" x 33.5" 16 cu. ft. -35 to 180°C Yes up to 7°C/min.
EGNL16-6NAL 29.5" x 29.3" x 33.5" 16 cu. ft. -35 to 180°C Yes up to 13°C/min.
EGNL16-6NWL 29.5" x 29.3" x 33.5" 16 cu. ft. -35 to 180°C Yes up to 13°C/min.

    ⬆️  Click model number for details, including metric & english units.

Experience the next level of testing flexibility and functionality with the new GL controller system. Building on 35 years of engineering success, the GL controller offers advanced chamber operation, intuitive controls, and expanded capabilities for today's testing environments.

The user interface features simplified navigation for quick access to any function, and remote network operation allows you to monitor and control your chamber from anywhere on your network via a standard browser.

Advanced Capabilities and Integration

  • Virtually Unlimited Programs: Store virtually unlimited test profiles that can be downloaded via browser or USB. Easily share programs with other chambers for accurate and repeatable testing.

  • Comprehensive Data Logging: Log over 30 operational parameters. Downloads to a server or PC can be automated for efficient data management.

  • Multilingual Support: The display supports English, Spanish, or French, making it accessible to a wider range of operators.

  • Maintenance and Diagnostics: Use programmable timers to set reminders for maintenance or other actions. Advanced diagnostics, a complete history log, and a 'back trace' feature simplify troubleshooting.

Remote Access and Command

  • Web Controller functionality: Our Web Controller tool is built-in, used for remote monitoring, programming, and data logging. The flexible user interface is suited for all devices, from phones to large monitors.

  • API and Macros: Macros allow you to set alerts or updates to email or other devices, or change chamber operation. The RestFUL API allows direct access and interaction with other software and devices.

  • Command Protocol Access: Direct access to GL command protocols via the ethernet, enabling custom programming and integration with other test equipment. Options for RS-232 and RS-485 serial interfaces are also available.

GL Control System Specification

Specification Features
Display

Color touch-screen, 10-inch diagonal
Multilingual display in English, Spanish, French, Italian, Portuguese, German, French, Polish, Japanese, Chinese, Vietnamese, Korean
Control Method

PID (Proportional, Integral, Derivative)
Communications

Remote access: Ethernet via browser, RestFUL API, or direct

Optional: TCP/IP, RS232, RS485

Email alarm and macro notifications via ESPEC Azure or SMTP

Note: ESPEC Azure is the default email communication protocol. Customers can use SMTP (as alternative email protocol) if they subscribe to the service.
Operating Modes

STOP: chamber off, programmer on
PGM: RUN runs selected test profile
CONSTANT: runs at set value continually (three saved profiles)
Programming Capabilities

Max 500 steps per test profile; test profiles can be chained for >500 steps.
Nesting loops to repeat steps
Copy, edit, insert, and delete steps
Selectable end-of-test modes
Create pause steps within programs
Guraranteed soak mode delays step-timer until setpoint is reached
Upload and download of test profiles via USB or browser
Data Storage

Maximum data log file size is 1GB
Number of test profiles limited by internal GL system storage; current model: 16 GB
Datalogging retention: ~700 days at 10 second intervals (1 sec to 60 min possible)
25 operational parameters available for datalogging
Automated download and storage of data using macro functionality
Additional Functions

Alarm report lists alarm and time occurred (also datalogged)
Time signal relay control (with naming capability)
High/low limit alarm functions
Audible alarm with on-screen explanation
Selectable restart modes after power failure
Automatic start and stop functions
User and role-based log-in security
Customizable screen content display
Service guide and help screens
Three settable reminder alarms for PM
Running time meter is integral
Remote Ethernet Operation

Full functionality of the mounted display
Operation data may be exported to CSV to the local device
Download or upload of test profiles
Creation of Macro functions
Network view: to show status of all enabled chambers on the network
Command pass-thru, allow direct controller access
Firmware maintenance

Firmware updates available via cloud service. One year updates are included.
Firmware CVE (Common Vulnerabilities and Exposures) updates at espec.com

Software Options

Learn more about ways to access ESPEC controllers via software our support page:
Software for GL

Recommended: Web Controller

The ESPEC Web Controller is an embedded server/software solution for monitoring and programming your chamber via Ethernet. Works with P-300, SCP-220, F4T, & F4 controllers. Included with GL Controller.

See the brochure
Self-install kit for existing units
Try the live demo now!

Independent of the controller itself, the Web Controller adds additional capabilities for datalogging, programming, alarm emails, and RESTful API.

Get quick pricing on Global-N Temperature Cycling Chambers

Fill out contact details below to get a price quote right away. Standard price quotes are usually completed and sent in less than four hours.


Price quotes include:
  • Pricing for unit, options, freight, and install/start-up
  • Current lead-time or stock status
  • Related documents: brochure, detailed specifications, drawing
  • Contact information for your local sales representative

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