Tenney Benchmaster Test Chamber

Tenney's Benchmaster temperature and humidity test chambers are capable of simulating a wide range of temperature or temperature and humidity conditions. The five-cubic foot workspace will readily accept equipment as large as a 19" relay rack. 

In keeping with the needs of today's lab, we designed these temperature and humidity test chambers to have a compact exterior that maximizes the interior workspace. 

Benefits of the Tenney Benchmaster Test Chamber

  • Simulates a wide range of temperature or combined temperature and humidity conditions to meet a variety of testing needs
  • Compact design maximizes interior laboratory workspace
  • Vertical-down airflow assures consistent conditions

Equipment Types

  • Temperature Only
  • Temperature & Humidity
  • Cascade Refrigeration System


  • Vapor-tight interior liners of 100% continuously welded stainless steel
  • Humidity capable models constructed of 100% non-corroding parts and have a low-water protection system
  • Open-air low mass nichrome wire heating elements
  • Cascade refrigeration system with hermetic compressor
  • 100 Ohm Platinum RTD sensor for temperature measurement
  • Vapor-Flo I Humidity Generator (in humidity models)
  • In humidity models-dry capacitance type humidity sensor
  • Chamber drain connection
  • Propeller fan for airflow


  • Temperature Range: -68°C to  +180°C
  • In humidity models-Humidity Capability: 20% to 95% RH in the dry bulb range of +20°C to +85°C,limited by a 5°C dewpoint



  • Temperature alarm and shutdown circuit for additional protection against chamber and product over/under temperature
  • Reverse osmosis water purification system
  • Water demineralizer
  • Water reservoir for humidity system (5 gallon)
  • Recirculating system for humidity water
  • Viewing window, thermally insulated and heated
  • Interior light
  • Shelving, adjustable and removable
  • Automatic CO2 or LN2 cooling boost system
  • Automating boost heating system
  • GN2 purge system
  • Recording instruments
  • Chamber cart with casters for benchtop models

Test Chamber Quality

TPS Thermal Product Solutions is a pioneer in the design and manufacturing of environmental test equipment. The Tenney Brand has been an industry leader since 1932. Our decades of experience, processes and procedures ensure quality and reliability of every test chamber or walk-in room we manufacture. Rest assured that you are purchasing a world-class piece of equipment built to perform and last.


We back our equipment with a comprehensive service organization. Factory trained, courteous and knowledgeable technicians provide on-site installation, maintenance and repair for your test chamber or room. In-house service technicians and a parts & service department stand ready to assist you. Contact our service department to inquire on preventive maintenance programs, extended warranties, calibrations services and more. For a full list of chamber services click here.

Battery Test Options


Learn About Reverse Osmosis Options


  • Watlow F4T Temperature Controller

    Watlow F4T Temperature Controller

    The Watlow F4T Temperature Controller with INTUITION™ temperature process controller combines the flexibility of a modular I/O controller with best-in-class ease of use.


    • 4.3-inch, color touch panel with high-resolution, graphical user-interface
    • 1 to 4 control loops with TRU-TUNE+ adaptive control algorithm for superior controllability
    • 40 ramp and soak profiles with real-time clock and battery backup.
    • Ethernet Modbus® TCP connectivity
    • High-speed USB 2.0 host port
    • Modular design, which offers numerous types of field pluggable modules for maximum flexibility and easiest compatibility
    • Optional Data Logging capability
    • Optional Graphical Trend Chart
    • TPS provides panel mounted USB and Ethernet ports located on the front control panel of the equipment


  • GN2 Purge System

    GN2 Purge System

    • provides and inert atmosphere inside the chamber
    • minimizes moisture buildup
    • prevents condensation
    • prevents corrosion by eliminating oxygen in the chamber
  • Ion Cartridge Exchanger

    Ion Cartridge Exchanger

    • For use when resistivity of water supply is less than 50,00 ohms/cm.
    • Prevents encrustation of the generator's immersion heater, housing, float assembly, ultimatley causing failure.
  • LinkTenn 32 Controller Software

    LinkTenn 32 Controller Software

    • interactive remote control and monitoring
    • alarm reporting and notification via email or fax
    • user-friendly profile program editor
    • logging, printing and graphing of process data
    • exporting of logging history data via CSV file for easy import into Microsoft Excel or analysis packages
  • Chart Recorder

    Chart Recorder

    • Circular or strip type
    • Records temperature versus time
    • Some models include digital display
    • J thermocouple for temperature measurement

  • Dry Air Purge System

    Dry Air Purge System

    • removes unwanted moisture and process vapors from chamber
    • a chamber valve prevents chamber from becoming pressurized
    • self regenerating twin tower heatless dessicant type dryer
    • activated by an event output from main controller

  • CO2 Boost Cooling System

    • Increases the rate of cooling beyond refrigeration means.
    • Non-adjustable, carbon dioxide injecting port
  • Explosion Resistant Interior/ Exterior for Hazardous Area

    • May be designed to meet NFPA 497 and National Electric Code, Article 500 standards
  • Alarm Buzzer & Silence Switch

    • Disables buzzer while corrective action is taken
    • Silence light illuminates
    • Alarms operator to reset silence switch

  • LN2 Boost Cooling System

    • Increases the rate or limit of cooling beyond refrigeration means.
    • Manual set flow adjustment valve


Tenney Benchmaster Test Chamber Specifications

Overall dimensions in inches/centimeters

Tenney Benchmaster Specifications