Tenney Junior - 6 Air Circulation System

TENNEY ENVIRONMENTAL
Tenney Junior Test Chambers: Models TJR and TUJR, W942, or WF4
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Temperature Sensor -
TUJR Location
Tenney Junior Test Chambers are provided with an efficient airflow system that maintains maximum
temperature uniformity.
Chamber air is conditioned in the ceiling plenum where the circulation fan, heater elements, and refrigeration
coil are located. A propeller type fan driven by an externally mounted motor generates airflow. The plenum
cover prevents direct heat radiation to the workspace.
Process air is drawn up into the left side of the plenum. It flows through the heater elements and the
refrigeration coil and is discharged by the fan down into the workspace. The cycle repeats. A 100 ohm
Platinum RTD sensor mounted below the fan measures discharge air temperature.
6.0
A
IR CIRCUL
A
TION SYSTEM
Air Circulation
Air
C
ir
cu
l
a
ti
o
n
Circulation Fan & Guard
Heaters &
Refrigeration
Coil
Plenum
Conditioning Section
Heating
Elements
Refrigeration
Cooling Coil
Fan Blade