The Tenney JR is a compact benchtop environmental test chamber engineered to deliver precise temperature simulation across -75°C to +200°C. This mechanically refrigerated chamber accommodates small components and materials with 1.2 cubic feet of usable workspace and ±0.3°C control tolerance. Equipped with dual 1/2 HP compressors, a 500 W heating system, and CFC-free refrigerants, the JR provides consistent performance for electronics, military, and pharmaceutical testing applications. The chamber accepts multiple control platforms—including Watlow 942, F4T, and EZ-Zone Programmer options—enabling 99-step programming with looping capability, delayed-start functions up to two weeks, and non-volatile memory retention for five years during power loss.
Technical Specifications
• Temperature Range: -75°C to +200°C
• Interior Dimensions: 16″ W × 11″ D × 11.75″ H (406 mm × 279 mm × 298 mm)
• Exterior Dimensions: 37″ W × 22″ D × 31.75″ H (940 mm × 559 mm × 806 mm)
• Workspace Volume: 1.2 cubic feet
• Control Tolerance: ±0.3°C
• Heater Capacity: 500 W (low-mass nichrome, open wire elements)
• Refrigeration: Dual 1/2 HP air-cooled compressors with calibrated capillary tubes; CFC-free refrigerants
• Electrical: 120 V, 1 Phase, 60 Hz; 18 A nominal; 20 A fuse rating
– Key Features
• Temperature rise from ambient to +200°C in 60 minutes (chamber empty)
• Temperature descent from ambient to -75°C in 55 minutes
• Alphanumeric display with real-time setpoint and chamber temperature readout
• 99-step program storage with interval lengths up to 99 hours
• Looping and nested-loop programming
• Ten resident program capacity
• Guaranteed soak feature
• Time-of-day start and delayed-start options (up to 14 days)
– Typical Applications
Testing small components and materials in electronics manufacturing, military specification validation, and pharmaceutical stability assessment.
– Compatibility & Integration
Supports VersaTenn, Watlow 942, Watlow F4T, Watlow EZ-Zone Programmer, and Smart 1.2™ control systems.
