Forma Thermo Scientific Environmental Chamber 311.5L 220/240V

Forma Thermo Scientific 3913

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Description
Specifications
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Clarkson 3913
Environmental Chamber 311.5L 220/240V
Thermo Fisher – Forma Thermo Scientific 3913

Broad Range of Features and Controls

  • Wide temperature range of 0° to 60°C enhances the flexibility of the unit
  • Relative humidity control via steam generator from above ambient to 95% at 37°C†
  • Sophisticated digital controls
  • Programmable ramp and soak cycles for temperature and RH†
  • Durable cabinets feature true laminar airflow through side plenums for extremely tight uniformity
  • Phenolic-coated evaporator for use in applications that create corrosive byproducts
  • Manual control of defrost and refrigeration cycles
  • Visible/audible safety alarms alert to over- and undertemperature conditions, deviation of humidity from set parameters (except Model 3920)

Durable Construction

  • Cold-rolled steel, powder-coated cabinet
  • 2.0 in. (5.1cm) thick, CFC-free, foamed-in-place polyurethane insulation
  • Stainless-steel interior
  • Solid stainless-steel adjustable shelves
  • Directed horizontal airflow system for excellent uniformity
  • Locking swivel casters ensure easy mobility during installation and cleaning
  • Leveling feet provide stability and added safety in the lab

Broad Range of Options

  • Interior lighting for Models 3920, 3940 and 3949‡
  • Reinforced shelving and flooring for heavy loads
  • Heatless dryer for lower humidity levels
  • Access ports for probes, sensors
  • Interior convenience receptacles
  • CO2(IR sensor)
  • 6 in. and 12 in. temperature chart recorder
  • Other custom options available
Specifications
Display Type Digital dual LED
Control Type Microprocessor, PID
Programmability Temperature ramp and soak, up to 24 steps
Temperature
Sensor RTD
Range 0° to 60°C
Resolution 0.1°C
Relative Accuracy ±0.1°C at 25° to 37°C
Uniformity ±0.3°C at 25° to 37°C
Refrigeration and Heating
Compressor 1/4hp, air-cooled
Refrigerant CFC-free, R134A
Defrost Adjustable defrost timer; factory set for two 15-min. defrost cycles/24 hr.
Heat Output 1750W (6000BTUH) at 220V, 1600W (5500BTUH) at 115V
Relative Humidity (all models except 3920)
Display Digital, dual LED (direct set and read in % RH)
Control Microprocessor, PID
Sensor Bulk polymer
Range Above ambient to 95% at 37°C (98.6°F)
Resolution 1.0%
Relative Accuracy ±5.0%
Humidity Source Steam generator; initial fill approx. 1 qt. (1L)
Input Water Pressure Range Water Inlet Gravity to 40psi
Water Consumption 0.25 gal./hr. input water volume
Water Resistivity 50kilohm to 1megohm resistance


Catalog Number Capacity Interior D x W x H Exterior D x W x H No. of Shelves Electrical Requirements
3911 11 cu. ft. (311.5L) 27 x 31 x 24 in. (68.6 x 78.7 x 60.9cm) 32 x 38 x 52.5 in. (81.3 x 96.5 x 133.2cm) 3 supplied; 11 max. 208/220V 60Hz
3913 * 11 cu. ft. (311.5L) 27 x 31 x 24 in. (68.6 x 78.7 x 60.9cm) 32 x 38 x 52.5 in. (81.3 x 96.5 x 133.2cm) 3 supplied; 11 max. 220/240V 50/60Hz
3940 29 cu. ft. (821.2L) 27 x 31 x 60 in. (68.6 x 78.7 x 152.4cm) 32 x 38 x 88.5 in. (81.3 x 96.5 x 224.8cm) 6 supplied; 19 max. 208/220V 60Hz
3949 29 cu. ft. (821.2L) 27 x 31 x 60 in. (68.6 x 78.7 x 152.4cm) 32 x 38 x 88.5 in. (81.3 x 96.5 x 224.8cm) 6 supplied; 19 max. 220/240V 50/60Hz

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