These Tenney benchtop and upright test chambers are capable of simulating a wide range of temperature and humidity conditions. The Tenney Jr benchtop, its upright companion Tenny T-U Jr, and the Tenney TH Jr benchtop are portable, self-contained, temperature-controlled test chamber. Compact exterior dimensions, in combination with ample interior workspace, make these chambers ideal for laboratory testing. These chambers are well-suited for use in electronic, military, and pharmaceutical quality assurance and reliability testing, as well as research testing and production processes. As specified, the chambers are mechanically refrigerated by means of single or cascade systems of tirne- proven design. All TH Jrs are equipped for total programming capabilities of temperature and humidity over time. The VersaTenn control is a proprietary instrument developed specifically for environmental chambers, thus it is easy to use and precisely designed to take complete command of the chamber's conditioning systems. Both the Tenney Jr and T-U Jr are standard with 24-step, programmable Watlow 942 controls.

Features of the Tenney TH Jr.:

• Construction: All models feature vapor-tinht interior liners made of 100% stainless steel that is continuously welded under inert gas. Reinforcement is used at all critical points, and through-wall ports are continuously welded. The workspace is fully insulated with a combination of fiberglass and polyurethane that optimizes the insulating characteristics of each material. 

• Control system for TH Jr: Proprietary VersaTenn provides fully automatic, PID, chamber control through a user-friendly alpha-numeric display. Thc control is bi-directional, proportional for heating, cooling, humidification, and dehumidification. The proportional band and the reset are operator-adjustable. Logic circuits automatically select cooling, heating, and humidity modes as required.

• 99 step programming capability with step-interval length of 99 hours.

• Ability to store up to 10 resident programs.

• Looping and nested-loop capability. Loops can be repeated up to 255 times. Infinite looping is possible.

• Time intervals are programmable in seconds, minutes, and hours.

• Time-of-day start and delayed-start functions up to two weeks.

• Non-volatile memory for up to 5 years of power-off protection of RAM.

• Digital selection and indication of actual conditions.

• Control tolerance: +0.3°C and +2% RH typical after stabilization.

• Humidity system: "Tenney VaporFloq" The humidity system is constructed of 100% noncorroding parts and is equipped with its own low-water protection system. A transparent Pyrex vessel permits easy inspection and affords easy ckan out and maintenance. The system operates at atmospheric pressure and is specially vented to prevent unwanted siphoning.

Please contact us for more information on the Tenney TH Jr. Digital