1. Product Name Ultra 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 -70 to 180°C (-95 to 356°F).
6.2. Temperature Constancy ± 0.3°C (± 0.5°C for Type 4) at -70 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 -70 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)
6.5. Temperature Pull-Down Time
6.5.1. 50Hz.
6.5.2. 60Hz.
6.6. Capacity for Live load
(Ambient Temperature of 23°C)
6.7. Air Flow 400 cfm for 8 cu. ft. and 14 cu. ft.
800 cfm for 32 cu. ft.
Model Size
ESZ-2C 8 cu. Ft
ESZ-3C 14 cu. Ft
ESZ-4C 32 cu. Ft
Model Amps
ESZ-2C 32 A
ESZ-3C 32 A
ESZ-4C 38 A
ESZ-2C ESZ-3C ESZ-4C
23 to 150°C 22 min. 30 min. 25 min.
-40 to 125°C 27 min. 30 min. 25 min.
ESZ-2C ESZ-3C ESZ-4C
23 to -65°C 48 min. 72 min. 114 min.
125 to -40°C 45 min. 72 min. 114 min.
ESZ-2C ESZ-3C ESZ-4C
23 to -65°C 35 min. 40 min. 85 min.
125 to -40°C 40 min. 60 min. 90 min.
ESZ-2C ESZ-3C ESZ-4C
23°C 1500 W 1200 W 1000 W
-50°C 850 W 650 W 500 W