For years AGREE chambers have been the workhorses of the environmental test chamber industry. Originally created to meet military test standards, their flexible design has made them suitable for a wide variety of applications. Fast temperature changes of 5 to 25°C/m. are possible, even with significant loads. The chambers have a removable floor, allowing integration with vibration test systems. Custom designs are common, allowing configuration to meet your exact requirements.

  • Special model EADX52 can interface with both vertical and horizontal vibration systems
  • ETL-listed electrical panel conforming to UL 508A

In addition, the P-300 touch-screen controller makes running an ESPEC environmental test chamber a breeze. The full-color, touch-screen interface is remarkably easy to use and understand. The P-300 Touch Screen Controller can be managed remotely via our new Ethernet/LAN-based Web Controller, serial port, or GP-IB/LabView.

ESPEC custom chamber capabilities:

Nearly every Agree chamber we build is designed per the application. ESPEC can build custom sizes, automation, and movement needed for applications with or without vibration systems.

Features for AGREE Chambers


  • Full-opening door with silicone gaskets and cam latch
  • Interior lighting recessed clear of workspace
  • Exterior is painted ESPEC slate blue and gray
  • Chamber floor designed to be changeable to accommodate different “floor plugs” for vibration systems
    • Standard floor plug provided is diaphragm for vertical vibration applications (solid or other floors optional)
    • Teflon glides in floor slot make floor replacement very easy
  • Custom models with vertical and horizontal movement to accommodate the use of combo-base vibration systems available.

Refrigeration and Plenum

  • Plenum with cooling coil and nichrome wire heaters
  • ¾ hp blower motors with one-piece stainless steel shafts
  • Non-CFC cascade refrigeration system using semi-hermetic Copeland Scroll or Discus compressors
  • Automatic water regulator controls water usage on water-cooled models
  • Humidity models include steam generator and dehumidification coil

System Controls

  • Instrumentation console mounted to the right of the door
  • Three levels of overheat protection including an independent, adjustable sensor
  • Electrical disconnect switch for main power
  • Specimen power interlock relay for chamber and sample protection

ESPEC’s New P-300 Programmer/Controller:

  • Easier to use, with USB functionality, smoother ramping, and energy saving operation
  • User-friendly touch-screen operation with 6.5" active-matrix color display
  • Three different ‘constant mode’ settings can be saved for single-setting operation
  • Store 40 programs, with up to 99 steps each (programs may be written on a PC and uploaded via USB)
  • The trend-graph display shows a record of setpoints and actual values (operation data can be downloaded as needed, or continually, to USB)
  • Two time signal relays for automated on/off control of test devices/samples
  • System alarms are stored in memory for historical review
  • Built-in timer functions allow the chamber to be started or shut down automatically
  • Pattern Manager Lite PC software for program editing and datalog viewing/exporting, to support USB functionality

Get A Fast, Free Price Quote

Photo of AGREE
Industrial-quality chambers for combination testing with vibration systems

Product Suggestions
Model Number Interior Dimensions
(W x D x H)
Interior Volume Temperature Range Humidity Control Change Rate
EAZ64-15NW 48" x 48" x 48" 64 cu. ft. -70 to 180°C Optional up to 15.6°C/min. Also available in 84 and 114 cu. ft. models
EAZ34-15NW 39" x 39" x 39" 34 cu. ft. -70 to 180°C Optional up to 18°C/min. Also available in 15 and 46 cu. ft. models
EAZ34-12NWL 39" x 39" x 39" 34 cu. ft. -70 to 180°C Optional up to 11.5°C/min. Also available in 15 and 46 cu. ft. models
EAZ34-6NWL 39" x 39" x 39" 34 cu. ft. -70 to 180°C Optional up to 5.5°C/min. Also available in 15 and 46 cu. ft. models
EAZ64-12NWL 48" x 48" x 48" 64 cu. ft. -70 to 180°C Optional up to 9°C/min. Also available in 84 and 114 cu. ft. models
EAZ64-6NWL 48" x 48" x 48" 64 cu. ft. -70 to 180°C Optional up to 3.5°C/min. Also available in 84 and 114 cu. ft. models
EADZ52-15NW 54" x 41.5" x 40" 52 cu. ft. -70 to 180°C Optional up to 5°C/min. Designed for use with combo-base vibration systems that operate in vertical or horizontal modes

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

Get improved performance, energy savings, plus USB access

New P-300 controller with USB

The exclusive ESPEC P-300 controller has USB and Ethernet features to make programming and data collection easier than before. The user interface uses tabs for faster access to any screen. Standard USB and optional Web Controller/Ethernet interfaces make programming and data acquisition much simpler. In addition, improved algorithms make operation faster and smoother.

DEMO: See how easy the P-300 is

USB port for upload/download of test profiles and test data

  • Test programs can uploaded or downloaded from the P-300 via USB thumb drive.
  • Create, edit, and store programs on a PC using the included Pattern Manager Lite software.
  • Accurate, repeatable testing by uploading the same program to multiple chambers.
  • Create your own back-up archive of programs, and get additional profiles from ESPEC's library.
  • Retrieve and download test operation data via USB thumb drive. Data timeframe is selectable.
  • For integrity, viewing test data on a PC and exporting to Excel requires included Pattern Manager Lite software.

Energy-saving operation

Invisible to the end user, the P-300 uses advanced cooling control via an electronic expansion valve, saving energy and improving temperature stability. Sophisticated future-looking algorithms make temperature ramping faster and smoother. These high-end features are unique to ESPEC. Additional improvements in refrigeration and heater operation will make the next generation of ESPEC chambers the most energy efficient ever.

Additional capabilities

  • Store up to forty programs, as well as three different constant-mode set-ups.
  • Multilingual display in English, Japanese, Chinese, or Korean.
  • Alarm diagnostics and history, plus a ‘back trace’ feature for troubleshooting.
  • Three programmable timers allow the user to set reminders for maintenance or other actions.
  • Energy saving by using only one compressor when testing above -10°C (for cascade refrigeration models).
  • Optional Ethernet/browser-based Web Controller access can also be used to upload and download programs, as well as data.
  • Optional Product Temperature Control allows faster ramping to the desired conditions on the sample.
  • Computer interface options for specialized programs: RS-232/serial or GP-IB.

P-300 Specification

Specification Features

Color touch-screen, 6.5 inch diagonal, 640x480 resolution
Multilingual display in English, Japanese, Chinese, or Korean

Control Method

PID (Proportional, Integral, Derivative)
plus WRTC (Window Reference Trajectory Control)


Standard: USB External Memory port
Optional: RS-232, RS-485, GP-IB, Ethernet

Operating Modes
(as indicated in upper left of the display)

STOP: chamber off, programmer on
PGM: RUN runs selected test profile
CONSTANT: runs at set value continually

Program Capacity

40 programs, 99 steps per program

Programming Capabilities

Create or copy programs
Upload and download of programs via USB
Copy, edit, insert, and delete steps
Two nested loops to repeat steps 999 times
Selectable end-of-test modes
Create pause steps within programs
Soak control delays timer until setpoint is reached

Additional Functions

Alarm report lists last 1000 alarms and time occurred
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
Keylock protection and configuration lock-out
Service guide and help screens
Three settable reminder alarms for PM
Running time meter is integral
RoHS directive lead-free compliant

Pattern Manager Lite Software

Allows creation, editing, and archive storage of test profiles on a PC
Test profiles may be uploaded and downloaded to P-300
Allows viewing and graphing of chamber operation data downloaded via USB
Operation data may be exported to CSV for use with Excel or other programs

Software Options

Learn more about ways to access ESPEC controllers via software our support page:
Software for P-300

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.

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.

Product Suggestions

Get quick pricing on AGREE Chambers

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  • Pricing for unit, options, freight, and install/start-up
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  • Related documents: brochure, detailed specifications, drawing
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Contacting ESPEC