GL Control System

Touch-screen controller with Ethernet access

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

  • 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

Data & Program transfer: USB External Memory port
Remote access: Ethernet via browser, RestFUL API, or direct
Optional: RS-232, RS-485
Email alarm and macro notifications using SMTP
Operating Modes

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

500 steps per test profile
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

1G of available storage
Unlimited storage of test profiles
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

GL Control System Software/Communications


GL Control System

Current models: Platinous J-series chambers since 2025

GL Chamber Controller *Live Demo*

 
Software Interface Notes link

Web Controller (included)

Ethernet
  • Full access to GL user interface via a web browser.
  • Download data via browser or USB
  • Macro builder for email alerts and automation (accessible from a web browser only).

Web Controller Product Page
RESTful API Ethernet RESTful API for access from other software RESTful API documentation (sample Python code) 

Chamber Connect Library

Ethernet or optional RS-232 or RS-485

As-is source code for custom programming using direct controller commands. Bypasses the API and Web Controller. (Python 3) 

Python library at Github.com

Labview drivers

RS-232

Direct controller commands for VISA 5.0+

Labview drivers at ni.com (link)

Detailed guide on remote/software access (pdf)
GL Controller Remote Access Guide

GL Communications in a nutshell:

  • Included Web Controller: ESPEC’s most complete browser-based solution with Datalogging (CSV), profile creation, email alarms, Restful API for app/software integrations.
  • Free Chamber Connect Library: Basic code for connecting to GL for custom applications. Uses Ethernet or RS-232/485 options. (Download at Github.com)
  • Standard USB port: Allows data downloading, also program upload/download. Data downloads are CSV, program files are JSON. Data download at the chamber is to USB thumb drive. Downloads from a browser will be to the local device.
  • Optional RS-232 or RS-485 ports for direct command access, including via Chamber Connect Library.

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