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TestEquity LLC, Environmental Chamber Division Environmental Chambers for Temperature and Humidity Testing
   TestEquity Model 140 Temperature Chamber (Environmental Chamber)
TestEquity 140 Temperature Chamber
  • -73°C to +175°C Temperature Range
  • 4 Cu Ft Workspace, 22W x 18H x 18D
  • Choice of Original F4 Controller or F4T Touch Screen Controller
  • High/Low Limit Control & Alarm
  • Viewing Window & Interior Light
  • 4" Access Ports on Left & Right Side
  • Non-CFC Cascade Refrigeration
  • 3 Year Parts, 1 Year Labor Warranty
  • Fast Delivery From Stock
  • Available For Sale, Rental or Lease

The TestEquity Model 140 provides full-range temperature testing with the smallest footprint in its class. Based on the field proven technology of our popular Model 1007C, it offers a more compact package at an economical price.

Your choice of the original F4 Controller or the NEW F4T Touch Screen Controller

F4T Controller    F4 Controller
F4T Touch Screen Controller
Modern touch screen interface
and connectivity
Original F4 Controller
Developed in 1998

NEW F4T Touch Screen Temperature Controller
The F4T is our next-generation controller. Featuring a touch-screen interface, it's exceptionally easy and intuitive to use. Includes RS-232 and Ethernet interfaces. GPIB is available as an option.

F4T Feature F4T Benefit
4.3 inch TFT Projected Capacitive (PCAP) color graphic touch screen Modern interface for quick entry and readout of parameters and functions
Direct alphanumeric parameter entry Quick and unambiguous entry of parameters for ease-of-use
Multiple levels of password security Prevent tampering of critical parameters and processes by unauthorized persons
Profile archiving and transfer via USB Flash Drive Quickly and easily transfer profiles to multiple chambers
Data Logging to USB Flash Drive Eliminate circular chart recorders which have limited usefulness, simplify your documentation process
F4 Compatibility Mode Use your existing software that was written for the original F4
Free Composer Software Easy creation and archiving of profiles and chamber configurations
NEMA 4 / IP65 Rated Front panel protects the controller against damage from dust and water intrusion

More about the F4T Touch Screen Controller >>

Original F4 Temperature Controller
Up to 256 steps can be programmed into as many as 40 nameable profiles. The context sensitive information key and guided steps make profile programming fast and easy. A four-line backlit LCD displays programming, setup, operating and help information. A large LED readout indicates the actual chamber temperature with 0.1° resolution. Internal logic provides refrigeration compressor control for responsive and reliable performance. Includes two alarms and seven event outputs to control remote devices. RS-232C communications is also included. GPIB, Ethernet and analog retransmit are available as options.
More about the Original F4 Temperature Controller >>

High/Low Limit ControllerHigh/Low Temperature Limit Controller and Alarm
Provides independent protection against excess temperatures. Both high and low limits can be set. The upper LED readout indicates the actual chamber temperature while the lower readout indicates the status The limit controller will shut down the chamber and trigger the audible alarm in the event of an out of limit condition. A set of uncommitted contacts are available to provide a safety power interlock for your test sample.

Viewing Window & Interior Light
6-Pane window minimizes thermal losses. Oven-rated interior light protrudes minimally in workspace.

Two 4" Access Ports
Lets you attach wires and sensors to your test sample through both the left and right side of the chamber.

Adjustable Shelf
A heavy-duty stainless steel wire shelf ensures proper airflow around your test sample for uniform temperature distribution.

Rugged 3" casters to permit easy movement, making the chamber truly portable.

Chamber Condensate Drain
The chamber floor has a drain to permit removal of condensate from the evaporator that can occur when cycling between low to high temperatures.

Power Cord with Plug
Heavy-duty power cord has a NEMA L6-30P twist-lock plug. Chamber requires 208V or 230V, 1 PH power.

World's Best Environmental Chamber WarrantyWorld's Best Environmental Chamber Warranty
Only TestEquity offers a 3-year warranty on parts and 1-year warranty on labor. Our nationwide service network is qualified to do the job right. And we always have replacement parts in stock for immediate shipment. Labor warranty applies to the United States and Canada only. See the complete warranty statement here.


No-Sweat Cabinet
We use a combination of structural urethane foam and fiberglass blanket insulation for a higher combined R-factor than just fiberglass alone. The door sealing surface is kept warm by circulating excess heat from the refrigeration system. The result is a cabinet that does not sweat due to condensation during low temperature operation.

The window is constructed of 6 panes of tempered glass separated by low-conductivity spacers to keep thermal losses to a minimum. Our unique design virtually eliminates exterior window sweating during normal temperature cycling conditions.

The stainless-steel interior liner is heliarc welded, while the refrigeration compartment behind the liner is double-insulated and carefully sealed. These design features reduce thermal losses and prevent moisture migration, ensuring years of optimum performance while keeping the cabinet rust-free.

Model 140Reliability & Safety That's Designed In
Non-CFC refrigerants are used in a cascade (two compressors) configuration. Expansion valves provide optimum performance throughout the operating range. Pressure regulators keep the operating pressures within safe limits regardless of load conditions. Liquid injection ensures cool compressor operation during high-temperature pull down for long life. Sequential starting of each compressor reduces the current demand on start-up. Each compressor is protected by a pressure switch. Care has been taken to use a minimum number of fittings, joints and welds to reduce the possibility of refrigerant leaks.

All electrical control components are UL approved. Each branch circuit is individually protected with Class CC fuses. The nichrome air-heater has a low watt-density and even heat distribution for reliable performance and fast response. A fusible link provides fail-safe protection against thermal runaways, in addition to the microprocessor-based high/low limit controller.

The side and rear panels are removable to permit complete access to the refrigeration system for ease of service and preventive maintenance.

Condensed Specifications
Temperature Range -73°C to +175°C
Tolerance Control: ±0.2°C; Uniformity: ±0.5°C
Rate of Change Heat: 7°C/min; Cool: 4°C/min (avg., -40°C to +85°C)
Inside Dimensions 22"W x 18"H x 18"D (4 Cubic feet)
Outside Dimensions 30"W x 64"H x 42"D
Input Power 208 or 230V, 1 Ph, 60 Hz, 25A (30A minimum service)
For detailed specifications CLICK HERE >>
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