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Environmental Chamber 821.2L 120V
List Price: $21,300.00
Clarkson Price: $19,170.00
You Save: $2,130.00 (10 %)
Clarkson Catalog Number: 3920
Manufacturer: Forma Thermo Scientific
Supplier Catalog Number: 3920
Manufacturer Direct Shipment
* Whole number only
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Clarkson 3920 Environmental Chamber 821.2L 120V Thermo Fisher - Forma Thermo Scientific 3920 / Fisher 13-262-340 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 |
3920 * |
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. |
120V 60Hz |
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