Terra Part # 3950-36F-ISO
$6,936
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Designed in the USA

• Chambers per Tier: 2

• Grounding is not standard. Cabinets are only grounded if part number 1600-59A is specified. Grounding is a per-chamber charge

• Warning: Conductive connectors can create sparking, which can damage sensitive materials. Use of a resistor (not included) is highly recommended

• CAUTION: Acrylic is damaged by alcohol and many other cleaning agents. Use only water and mild detergent

• Includes Gas Dilution Module (using 24V) to provide humidity uniformity through the desiccator cabinet (draws power from IsoDry Dual Purge system)

• Requires IsoDry Humidity Controllers: IsoDry Dual Purge System, RH sensor, and IsoDry NitroWatch for operation (order separately)

• Cabinet pre-wired for easy installation of RH sensor

• Innovative wall fusing technology creates a rigid, durable structure that withstands high-frequency vibration testing

• Includes (2) stainless steel racks per chamber and (1) Perforated Shelf; order additional shelves separately

• Plenum chamber minimizes backfill, ensures even gas distribution

• Chrome-plated LiftLatches™ included

• Upgrade to all-stainless steel (304 or 316) LiftLatches to minimize scratching, corrosion and contamination resulting over time with chrome-plated latches; specify when ordering

• Locking Liftlatches™ also available - specify one per chamber

• Access doors include stainless steel reinforcing frame

• Doors include Santoprene® “e”-shape non-outgassing rubber gasket to eliminate leaks

• Order replacement door(s) to ensure uninterrupted service should a door ever be damaged

• Includes (1) Automatic RB Valve per chamber and (1) door switch per door; use online System Builder to select other desired shelves, gas controllers or stand

Chamber Dimensions: 22.125" W x 22.125" D x 11.625" H

Opening Dimensions: 21.5" W x 10.75" H

Number of Chambers: 10 Chambers

Electrical Specifications: 12 V, 1 Ph, 50/60 Hz

Marks & Listings: CE, UL, ULC

Weight, Product: 207 lb

Weight, Shipping: 382 lb

Dimensions, Product: 46" W x 22.5" D x 60" H

Dimensions, Shipping: 51.5" W x 67.5" D x 28" H

Package Type: Crate

Unit of Measure: EA

Features and Benefits

IsoDry Explained

IsoDry Dual Purge/NitroWatch Systems

The complete IsoDry control system includes a relative humidity sensor mounted inside the chamber and a Terra's IsoDry Dual Purge and NitroWatch systems, which work in tandem to ensure fast set point recovery times (see graph above).

The Dual Purge system provides a high-volume burst of nitrogen to attain the RH set point upon system set-up. Once this set point is attained, it uses an economical low-flow purge to maintain the set point, and then activates the high-flow purge the minute a door opens to recover set point with minimal nitrogen waste. The NitroWatch provides continuous monitor/display of both measured RH and set point levels.

Status alerts built into the IsoDry Dual Purge System warn if incoming nitrogen line pressure falls below operational rates (signaling an interruption in the gas supply) or if the system remains in high-flow purge for an excessive period (signaling a door left ajar). This integrated system also provides the low-voltage power required by the IsoDry and a variable speed control for the dilution fans.

For smaller cabinets, a flowmeter kit provides an economical alternative to the automated Dual Purge/NitroWatch controller. The flowmeter kit includes a plug-in power supply for the gas mixing fans, but does not include set-point capability or RH monitoring.

What's Your Application?

The standard NitroPlex™ system provides unsurpassed moisture control in dozens of storage applications. Temperature, gas or biological sensors expand the range of critical operations.

  • Microelectronics components, surface-mount devices (SMDs), hybrid packages
  • Storage of printed circuit boards (PCBs) for rework
  • Pharmaceutical R&D studies
  • Kitting of high-precision watch components
  • Pass-through transfer of night-vision electronics
  • Lithium battery development
  • Humidity testing of cosmetics
  • Accelerated life testing of ICs
  • Animal inhalation and toxicology research

Which critical control application can you find in your facility?

Power Requirement 24V: draws power from IsoDry Dual Purge System
Fans 120 CFM each
Display 5-digit LED
Display Resolution ± 0.1%RH
Sensor Accuracy ± 2% RH @ 20°C
Measuring Range 0 - 100% RH
Calibration None required for standard accuracy range

Automatic Relief/Bleed Valve

Terra's Automatic Relief/Bleed (RB) Valve opens up at 0.01 PSI, relieving overpressure that could damage desiccators; also works as a check valve to prevent influx of room air.

IsoDry Gas Dilution Module

IsoDry Gas Dilution Module enhances the relative humidity uniformity throughout the desiccator cabinet.

Ergonomic LiftLatches

Lifting latch mechanism minimizes stress on wrists and desiccator hinges; non-rotary motion generates no particles inside the storage area (optional locking model shown)

Reinforced Doors with Non-adhesive Gaskets

Stainless steel door frames extend desiccator life; one-piece fused gaskets are non-outgassing, will not creep or sag

Gas Dilution System Ensures Uniform Humidity

IsoDry Gas Dilution Module enhances relative humidity uniformity throughout the desiccator cabinet and speeds up moisture removal after doors are closed.

Three-Chamber IsoDry Desiccator Cabinet

Available in three chamber sizes, these desiccators provide uniform gas distribution and reach humidity set-point quickly, ideal for moisture-sensitive samples; include racks for adjustable shelving.

Popular Accessories

For a full list of accessories, select a product then click Choose Accessories on that product page.
  • 3-inch Diameter Caster Set
    Casters are easily retrofitted for mobility. Products can be rolled out of the way when cleaning or relocated as workflow changes.
  • Humidity & Temperature Data Logger
    Provides a convenient record of storage conditions inside a Desiccator chamber-adjustable logging interval (hours to months), USB port for easy data download in several formats.
  • Dual Purge and NitroWatch
    Terra’s Dual Purge and NitroWatch relative humidity controllers maintain a low-RH set-point inside a desiccator or glove box; they provide variable purge control that ensures continuous positive pressure and eliminates nitrogen waste.
  • NitroWatch Relative Humidity Sensor
    NitroWatch relative humidity sensor provides continuous moisture monitoring inside a desiccator or glove box.
  • Available Stainless Steel Shelves and Trays
    Adjustable, non-contaminating shelves and trays slide on stainless steel racks, allowing easy parts access (one perforated shelf included)
  • Nitrogen Generator
    Terra’s Nitrogen Generators provide a continuous, reliable supply of clean, dry nitrogen up to 99% pure to eliminate dependence on bulky canisters to operate desiccators and glove boxes.
  • Small Powder-Coated Steel Desiccator Stand, 4"H
    Small 4"H powder-coated steel desiccator stand adjusts to fit cabinet snugly; optional casters simplify positioning and cleaning. Also available in stainless steel and 12" height.

On a tight schedule? Choose FasTrak 24/7 Priority Service to help meet your critical schedule for Terra-manufactured products, either before or after your order is placed.*

  • FasTrak 24/7 provides a 24/7 commitment to meet the shipping date YOU specify, regardless of quoted lead times.
  • FasTrak 24/7 assigns a dedicated production team plus a dedicated senior expeditor working three shifts to meet your delivery specification.
  • FasTrak 24/7 guarantees* to meet the agreed-to specified ship date.

Call for pricing. FasTrak service fees cover costs of additional services only, without additional profit.

 * Terra's FasTrak services limited guarantee: to ship on the ESD or date specified OR to refund up to 100% of FasTrak charges. This guarantee covers no direct, special, consequential or other damages and is strictly limited to up to 100% of the amount paid for FasTrak service. When a specified ship date is missed due to factors outside Terra's control (vendor performance, deliveries by shipping companies, etc.) and random factors such as accidents, the credit of up to 100% of the FasTrak 24/7 may not apply. FasTrak service requested after order placement will be quoted and accepted based on available time remaining before required ship date.

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