1. Product Name Low Temperature Chamber.
2. Model
A = Refrigeration Cooling is by Air.
W = Refrigeration Cooling is by Water.
3. Temperature Control System Balanced Temperature and Humidity Control System: BTHC.
4. Power 208/230V 3Ph 60Hz ±5%
200/220V 3Ph 50Hz ±5%
5. Ambient Temperature Allowable Range of Operation: 5 to 35°C (41 to 95°F).
Range of Assured Performance: 10 to 25°C (50 to 77°F).
6. Performance
6.1. Temperature Range -35 to 180°C (-31 to 356°F).
6.2. Temperature Constancy ± 0.3°C (± 0.5°C for Type 4) at -35 to 100°C.
± 0.5°C (± 0.7°C for Type 4) at 101 to 180°C.
6.3. Temperature Uniformity ± 0.7°C (± 1.0°C for Type 4) at -35 to 100°C.
±1.0°C (± 1.5°C for Type 4) at 101 to 180°C.
6.4. Temperature Heat-Up Time
(208V Supply)
6.8. Temperature Pull-Down Time
6.8.1. 50Hz.
6.8.2. 60Hz.
6.9. Capacity for Live load
(Ambient Temperature of 23°C)
6.10. Air Flow 400 cfm for 8 cu. ft. and 14 cu. ft.
800 cfm for 32 cu. ft.
Model Size
ESU-2C 8 cu. Ft
ESU-3C 14 cu. Ft
ESU-4C 32 cu. Ft
Model Amps
ESU-2C 24 A
ESU-3C 24 A
ESU-4C 31 A
ESU-2C ESU-3C ESU-4C
23 to 150°C 22 min. 30 min. 25 min.
-20 to 85°C 20 min. 25 min. 20 min.
ESU-2C ESU-3C ESU-4C
23 to -30°C 50 min. 60 min. 84 min.
85 to -20°C 72 min. 96 min. 120 min.
ESU-2C ESU-3C ESU-4C
23 to -30°C 25 min. 27 min. 65 min.
85 to -20°C 30 min. 35 min. 75 min.
ESU-2C ESU-3C ESU-4C
23°C 1500 W 1200 W 1000 W
-20°C 700 W 600 W 400 W