SmartDesiccator™ Benchtop Storage Desiccators

No. 1911-41 Acrylic SmartDesiccator™. Shown with optional shelves and 304 stainless steel door frame

Miniaturized LED monitors humidity and displays set point

• First-of-its-kind SmartDesiccator™ cuts nitrogen expenses by up to 78%
• Automates clean, dry benchtop storage to eliminate moisture-related degradation and optimize yields
• Ideal for semiconductor components, biological and pharmaceutical samples, and other sensitive materials
• Fully integrated turnkey system takes 30 seconds to install!

Terra Universal's SmartDesiccator™ maximizes yields of sensitive materials by automatically maintaining a user-determined humidity set point.

Its quick-response feedback system continuously monitors the cabinet's relative humidity level and activates a purge of dry nitrogen only when it is needed. The system thus economizes on gas consumption and minimizes overpressures that can stress cabinet seals. Comparison testing reveals that the SmartDesiccator™ maintains a low relative humidity level using only 22% of the nitrogen required by a flowmeter-based system of the identical size (see sidebar).

The miniaturized LED display and sensor module eliminate the need for external control boxes. This design also simplifies installation—operation requires only one gas and one low voltage power connection.

304 stainless steel door frame restricts the door from flexing or bending, thereby preventing the cracks and fatigue that occur in all-plastic cabinets. The rigidity of the door also ensures a tight seal between door and frame, minimizing contamination influx and gas leakage. A specially designed lift latch eliminates hinge and door damage caused by the strain of twisting and turning conventional latch systems. The SmartDesiccator™ also incorporates a one-piece, nonadhesive, nonoutgassing gasket specially formulated to retain sealing integrity in extreme low humidity. Because it won't sag or migrate, it extends the service life of the cabinet.

Prices include the humidity control module, sensor, and Automatic RB® Valve, which ensures safe pressure release. Systems are available in 304 stainless steel, acrylic or transparent static-dissipative PVC, which helps control static charges and the particles they attract.

Ambient Humidity:	60% RH
Temperature:	70°F (21° C)
RH Setpoint:	10% RH
Test Period:	Achieve setpoint and then maintain it for 24 hours
Chamber Access:	Door opened once every 30 minutes; remains open for one minute
SmartDesiccator™ (blue line on chart)
To achieve setpoint:	85 cubic feet (2.4 cubic meters). Required 30 minutes @ 170 CFH (4.81 m³/hr) on high flow.
Maintain for 24 hrs:	40 cubic feet (1.1 cubic meters)
Total N2 Consumed:	125 cubic feet (3.5 cubic meters)
Desiccator with 0 - 20 SCFH flowmeter (red line on chart)
To achieve setpoint:	85 cubic feet (2.4 cubic meters). Required over 4 hours @ 20 CFH (0.57 m³/hr). Note: setpoint measured with a hygrometer, since this set up does not monitor humidity level.
Maintain for 24 hrs:	480 cubic feet (13.6 cubic meters)
Total N2 Consumed:	565 cubic feet (16 cubic meters)

Smart Performance—and Big Savings!
Testing demonstrates the cost benefit of the SmartDesiccator's automated nitrogen control system.

The test at right was conducted on a desiccator equipped with a flowmeter and then with a SmartDesiccator™ control system, under the condition specified in the chart.

SmartDesiccator™ uses 22% of nitrogen consumed by standard cabinet—a 78% saving!

Hardware Clearances (add to nominal dimensions)

Plastic SmartDesiccators™

Overall Dimensions 22"W x 20.5"D x 16.85"H (559 mm x 521 mm x 428 mm)

Electropolished 304 Stainless Steel SmartDesiccators™

Door Opening: 20.25"W x 14.5"H (514 mm x 368 mm) 
Optional Shelf ID: 19.5"W x 19.25"D (495 mm x 489 mm)