Ⅳ.Main Technical parameters
 

1. Chamber (Water cooled ,ambient temperature +25℃,no load )
 

W1000 × D800 × H 1000 mm
 

W 1600 × H 2330 × D 3195 mm (Approx )
 

2. Temperature
 

-70℃～+150℃
 

≦±2.0℃
 

±0.5°C
 

≤±2.0°C
 

From -40⁰C to up to +85⁰C, linear 20⁰C/min (Dead load 30Kg iron)
 

From +85⁰C to up to -40⁰C, linear 20⁰C/min (Dead load 30Kg) iron without heating
 

From 20°C to 85°C (20°C/min) +85°C dwell for 23 minutes,
From 85°C to -40°C (20°C/min)-40°C dwell for 23 minutes
From -40°C to 20°C (20°C/min) in 3 minute ramp

*Temperature performance test is based on the relevant provisions of IEC60068 -3 standard
 
measurement; sensor placed in the unit outlet

Overall structure and chamber was composed of three parts as below.
 
Insulation box, separate refrigeration units, and electrical control cabinet.

wall material: high-quality carbon steel with static color spray
 
 inner wall material: SUS304 # matte stainless steel plate
 
Insulation materials: rigid polyurethane foam insulation layer + glass fiber.

Single door ,left open ,Heating wire was installed at the door frames to
 
prevent condensation at low temperatures.

With observation window(specific size according to design) multi-hollow
 
electric insulation coated glass prevent condensation effectively

Φ100 mm located on right sides with rubber stopper and plastic cover
 

LED One type located on observation window
 

High quality nickel-chromium wire electric heater, non contact control (SSR)
 

With workroom condensate and condensate drain
 

stainless steel sample holder 2pcs,Adjustable, load capacity 30kg/ layer
 

Mobile Casters *4 with foot cups
 

Total power circuit breaker, over-temperature protection.
 

Ⅵ,Freezing system
 

Bock /Bizer Semi-Hermetic Compressor from Germany
 

Environmental-friendly refrigerant: R404A ,R23
 

Shell and Tube condenser(Water -cooled)
 

Fin-type multi-stage automatic load capacity adjustment, No frost in long-
 
term use of low temperature and humidity conditions

Use internationally-known brand, such as high precise expansion valve,
 
oil extractor, dryer and many other accessories.

Adjust energy consumption output and control automatically to the
 
refrigeration system.

Adjust energy consumption output and control automatically to the
 
refrigeration system.

Ⅷ. Electrical control system
 

A. Emergency stop switch
B. Power switch
C. Over-temperature protection
D.RS-485 interface
 

A. Heater protection switch if no water
B.Heater over-current circuit breaker
C.Circulating fan over-current overload protection
D. Compressor high voltage protection switch
E. Compressor overheat protection switch
F. Compressor over-current protection switch
G. Over-voltage under-phase protection switch
H. Circuit Breakers
I. Leakage switch
J.Zero-crossing gate fluid power controller