- Desiccator cabinet with gas dilution fans for fast, uniform moisture removal, down to 0%RH
- Dilution fans quickly and efficiently mix nitrogen through cabinet to reduce N2 consumption
- Eliminates moisture "blind spots" that cause large RH deviations between different chambers
- Automatic humidity control system continuously monitors user-specified RH set-point inside cabinet
- Ideal for applications that permit chambers to share the same air throughout cabinet
IsoDry® Desiccator Cabinets
3950-PP-03 71560
IsoDry® Desiccator Cabinets
Read more
Manufactured By: Terra Universal
Print
Want a quote quickly ?
Submit a QuickQuote requestProduct Details
Product Details
• Desiccator cabinet with gas dilution fans for fast, uniform moisture removal, down to 0%RH
• Dilution fans quickly and efficiently mix nitrogen through cabinet to reduce N2 consumption
• Eliminates moisture "blind spots" that cause large RH deviations between different chambers
• Automatic humidity control system continuously monitors user-specified RH set-point inside cabinet
• Ideal for applications that permit chambers to share the same air throughout cabinet
• IsoDry® desiccator cabinets incorporate a unique, patented nitrogen purge system to achieve faster and more uniform low-humidity conditions throughout the cabinet.
• The desiccator cabinet also includes a moisture sensor that connects to a separate automatic RH control system to maintain sub-ambient, user-specified humidity threshold down to 0% RH.
• How IsoDry® System Works:
• High-purity nitrogen gas feeds into the desiccator cabinet and is mixed by built-in fans with existing air inside the cabinet.
• The gas dilution fans continuously circulate and mix dry nitrogen throughout the cabinet to eliminate moisture “blind spots” and further dilute moisture present inside the cabinet.
• The influx of nitrogen gas pressurizes the cabinet, causing moisture-laden air to be displaced and released through the automatic relief/bleed (RB) valves. This steady bleed causes the concentration of dry nitrogen gas inside the desiccator to increase until the desired RH level is reached.
• When the RH set-point is reached, the system reverts from high-flow to low-flow nitrogen gas supply to maintain the set-point and conserve nitrogen.
• When a door is opened, or when the relative humidity (RH) climbs above set-point level, the system re-activates high-flow to accelerate moisture removal.
• All chambers within the cabinet share the same air and thus share the same humidity level of the cabinet (+/- 10% RH from set point).
• Grounding is not standard on all designs, choose static-control options/designs to protect sensitive materials against ESD.
• Static-dissipative PVC (SD-PVC) design features bonded dissipative layers that resist abrasion and retain surface resistivity of 106 - 108 ohms/square indefinitely (unlike spray-on coatings that can wear off after a few years). SD-PVC also eliminates static-cling to help maintain clean surfaces.
• Conforms to DOD Handbook 263, MIL-SPEC 1686 and 1772 with selection of proper accessories.
• Cabinet:
• Innovative wall fusing technology creates a rigid, durable structure for improved weight capacity and resistance to high-frequency vibrations.
• Automatic RB® (Relief/Bleed) valves on each chamber relieve excess pressure inside the cabinet without allowing outside air or contaminants inside.
• Stainless steel wire racks allow shelves to be positioned at 1” increments to accommodate different part sizes; shelves can also be removed and used as carrying trays.
• Doors:
• Access doors with 304 stainless steel reinforced frames extend desiccator cabinet's service life and provide a tight seal.
• Doors include one-piece non-adhesive Santoprene® “e”-shape rubber gasket for tight seal to prevent outside air from leaking in; gaskets is non-outgassing and will not take a set or keep an impression.
• Heavy-duty lift latches prevent metal-on-metal scraping common with rotary latches; chrome-plated included standard; upgrade to all-stainless steel (304 or 316) to minimize scratching, corrosion and contamination resulting over time that can occur with chrome-plated latches.
• Optional locking lift latches also available - specify one per chamber.
• Durable 304 stainless steel hinges eliminate corrosion, flaking, and contamination that commonly occur with ordinary chrome-plated hinges.
• Order replacement door(s) to ensure uninterrupted service should a door ever be damaged and require replacement.
• Requires:
• Gas dilution module requires connection to IsoDry® humidity controller for operation: either IsoDry® Dual Purge System and IsoDry® NitroWatch®, or IsoDry® Smart® Controller (order either system separately).
• Includes:
• (1) RH sensor and (1) gas dilution module. Gas dilution module (24V) and sensor are pre-installed and pre-wired for quick connection with Terra’s automatic humidity control systems: DualPurge and NitroWatch®.
• (2) Stainless steel racks and (1) automatic R/B valve per chamber.
• (1) Perforated stainless steel shelf; order additional shelves separately
• Use online System Builder to select other desired shelves, gas controllers, stand and accessories.
IsoDry® Desiccator Cabinets
Standard Features
- A Gas Mixing ModuleOperates when doors are closed to promote uniform humidity levels throughout the cabinet
- B Relief/Bleed (RB) ValvePrevents overpressure; acts as a check valve (one included per chamber)
- C Reinforced DoorsStainless steel door frames include non-adhesive, non-outgassing, one-piece gaskets that won't creep or sag over extended use
- D Grounding TerminalsStandard on static-dissipative PVC chambers to prevent electro-static discharge (ESD)
Optional Features
- 1 IsoDry Automatic Humidity ControllersDual Purge and NitroWatch systems work in tandem to provide variable gas purge: high when needed to reach set point; low to conserve nitrogen
- 2 Relative Humidity SensorAllows real-time monitor/display of internal humidity level
- 3 StandStands available in stainless or powder-coated steel, with casters for easy cabinet positioning
- 4 Nitrogen GeneratorNitrogen Generator provides a continuous, reliable source of nitrogen up to 99% pure
- 5 Stainless-steel shelves and traysAdjustable in one-inch increments on stainless steel racks
IsoDry® Desiccator Cabinets
Desiccators: Features and Design overview- Leveling your Desiccator
- IsoDry® Desiccator Cabinet, 8-chamber static-dissipative PVC
- IsoDry® Desiccator Cabinet, 6-chamber static-dissipative PVC
- IsoDry Desiccators
Desiccators: Features and Design overview Terra's nitrogen-purged desiccator cabinets meet dry storage requirements as low as 1% relative humidity. Standardization simplifies component upgrade, retrofit and replacement. Terra's Smart controllers allow setpoint control and even multiplexed purging for the most critical humidity requirements.
Leveling your Desiccator Learn how to properly level your plastic or stainless steel desiccator cabinet, as well as instructions to align the doors.
Eight chamber SDPVC IsoDry Desiccator Cabinet made of dissipative PVC, which prevents static charges and dust attraction; includes racks, shelf, bleed valve IsoDry® Desiccator Cabinet, 8-chamber static-dissipative PVC Eight-chamber IsoDry desiccator cabinet provides unsurpassed low-RH uniformity; dissipative PVC prevents surface charges that attract dust. Includes racks, shelf, bleed valve.
Six-chamber SDPVC IsoDry desiccator cabinet in static-dissipative PVC, which eliminates static charges and dust attraction. Includes racks, shelf, bleed valve ( | 3950-00F-ISO displayed IsoDry® Desiccator Cabinet, 6-chamber static-dissipative PVC 6-chamber IsoDry desiccator cabinet provides unsurpassed low-RH uniformity; dissipative PVC prevents surface charges that attract dust. Includes racks, shelf, bleed valve. Shown with optional flowmeter.
IsoDry Dessicators include patent-pending technology to optimize RH uniformity and set-point recovery, protecting sensitive parts (controllers and shelves optio | 3950-36F-ISO displayed IsoDry Desiccators IsoDry Dessicators include patent-pending technology to optimize RH uniformity and set-point recovery, protecting moisture-sensitive parts and reducing nitrogen expenses (shown with optional gas controls and nitrogen generator).
Features & Benefits
Features and Benefits
IsoDry Explained 
Print Copy Copied
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.
Static-Dissipative PVC Plating
Terra's SDPVC features bonded dissipative layers that resist abrasion. SDPVC desiccators retain their surface resistivity of 106 - 108 ohms/square indefinitely (unlike spray-on coatings that can wear off after a few years), protecting your materials against ESD damage. Further, the control of static charges eliminates particle attractions, helping maintain clean surfaces.
High Caliber Hardware
Don’t be concerned about the quality, durability, and craftsmanship of your latches, ports, glides and hinges. Terra’s products are made of long lasting, cleanroom compatible, top tier hardware.
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.
Doors - The First Failure Point of a Desiccator Cabinet
Terra’s stainless steel door frames eliminate the need for internal reinforcements, which create particle surfaces and compromise cleaning. Unlike other doors with glue-on anti-bow pieces, Terra’s doors use no adhesives. This eliminates particle traps, sources of outgassing—and extends the strength and service life of the desiccator.
Available Accessories
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 and 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. -
Jumbo Display Hygro-Thermometer
Digital temperature/humidity gauge is ideal for monitoring temperature and humidity. -
Microwaveable Kleer-Vue Sorbent Box
An alternative to nitrogen purging, these desiccant units contain indicating silica gel that turns from blue to pink as moisture is absorbed. -
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.
Products similar to this one
Some ship in 1 - 3 days
Some ship in 20 - 26 days
Some ship in 21 - 23 days
Some ship in 1 - 3 days
Some ship in 15 - 21 days
Some ship in 15 - 19 days
Some ship in 1 - 3 days
Other products you may find relevant
Usually Ships in 1 - 3 days
Usually Ships in 1 - 3 days
Usually Ships in 1 - 3 days
Usually Ships in 1 - 3 days
Mobile Desiccator Cabinet; 1 Chamber, Static Dissipative PVC, 23.75" W x 28.875" D x 60.25" H ID$5,451Usually Ships in 20 - 24 days
Usually Ships in 1 - 3 days
Usually Ships in 1 - 3 days
Some ship in 1 - 3 days
Some ship in 23 - 31 days
Some ship in 1 - 3 days
Group of 10 productsSure-Grip® Flammable Liquid EX Safety Can Storage Cabinets from Justrite From$532Some ship in 8 - 12 days
Some ship in 8 - 12 days
Some ship in 8 - 12 days
Some ship in 8 - 12 days
Some ship in 8 - 12 days
Some ship in 1 - 3 days
Some ship in 10 - 16 days
Some ship in 20 - 24 days
Some ship in 1 - 3 days
Some ship in 1 - 3 days
Some ship in 1 - 3 days
Some ship in 5 - 7 days
Some ship in 1 - 3 days
Some ship in 4 - 6 days
Some ship in 1 - 3 days
Some ship in 1 - 3 days
Some ship in 10 - 14 days
Some ship in 1 - 3 days
Usually Ships in 12 - 22 days
Buy Accessories
Manuals & Resources
Manuals & Resources
Desiccator Dual Purge System
Print Copy Copied
Dual Purge™ System
- Cuts nitrogen waste, guards against oxidation
- Ensures a constant positive pressure inside desiccators and other enclosures to block contamination and moisture inflow
- Automatically activates high-flow purge when doors are opened to ensure fast, effective purge of particles and moisture
- Operates in tandem with NitroWatch® to maintain any desired sub-ambient moisture level (down to 0% RH)
- Guards against pressure damage to desiccator doors and seals
- Door switches are highly reliable—rated for over 10 million operations
Desiccators must be continuously purged with nitrogen or another process gas in order to ensure a controlled environment free of contaminants and moisture.
Unfortunately, however, a steady gas inflow can't guarantee the clean, dry conditions you require. A flow adequate to maintain a safe internal positive pressure when doors are closed is insufficient to overcome the backflow of outside air that occurs when a door is opened. A higher-level purge that might guard against this backflow wastes nitrogen and leads to over-pressurization that warp doors and damage seals.
Dual Purge System Offers Variable-Purge Security
The Desiccator Dual Purge System solves these problems by providing a higher flow level only when it's needed, and only for as long as it's needed.
It relies on a sensor switch installed on each door. During normal operation, with all doors closed, the system maintains an economical low flow of nitrogen into the desiccator to ensure a constant positive pressure of about 0.05" WG (Water Gauge)—just enough to block out moisture and contaminants.
When a door is opened, the sensor switch immediately activates a high-flow purge of nitrogen into the desiccator's plenum chamber that minimizes the influx of moisture and contaminants.
When the door is closed, the high-level gas flow continues to purge the desiccator for a selectable period of time, ensuring that any moisture that does enter the chamber is quickly forced out of the Automatic RB® (Relief/Bleed) Valve, before it can degrade sensitive materials. This time delay is adjustable, so you can retain the high-flow for a longer time when you suspect moisture contamination may have occurred. Note: The Automatic RB® Valve must be ordered separately.
The dual-purge capabilities of these units ensure that contaminants and moisture stay outside the processing chamber and at the same time guard against dangerous over-pressurization that can lead to warped doors, failed seals—even explosions! And because the Dual Purge System delivers only as much gas as is necessary, it economizes on nitrogen consumption; tests show that in many applications, these units can pay for themselves in a matter of months.
Safety Alarms Ensure Worry-Free Operation
The Dual Purge System incorporates a flowmeter, a line pressure gauge and a variable purge mechanism. A “Low-Pressure” alarm is activated if the incoming line pressure is ever interrupted. This dual audible/visible alarm alerts you to a disconnected supply line, an empty gas storage pod, or other problem that could spell disaster for contents of a desiccator or glove box!
NitroWatch™ Controller Expands Capabilities
The Dual Purge System operates in tandem with Terra's NitroWatch System to fully automate moisture control.
The NitroWatch includes a humidity sensor that continuously monitors the internal RH level and activates the Dual Purge to automatically maintain any sub-ambient humidity threshold you require (down to 0% RH). For more critical requirements, select the NitroPlex™, which combines this automatic humidity control with multiplexed purge capability. In all of these applications, the Automatic RB Valve is required to ensure safe relief of over-pressurization that can build inside a chamber.
- Dimensions: 12"W x 11.25"D x 7"H (305 mm x 286 mm x 178 mm)
- Weight: 16 lbs. (7258 g.)
- Flowmeter: 0-20 SCFH
- Line Pressure Gauge: 0-60 psi
- Chamber Sensor: 0 - 0.4" WG (factory set at 0.02" WG)
- Inlet/Outlet: 0.25" (6 mm) (accepts 0.25" (6 mm) OD polyethylene tubing)
- Case Material: 304 stainless steel; Chrome plated or stainless steel internal fittings
- Power Requirement: 110/220VAC, 50/60Hz (requires no manual power setting)
- Timer Adjustment: 0-8 minutes (factory set at 1 minute)
The variable Purge Advantage:
Low Flow Conserves N2
when Doors Closed
when Doors Closed
High Flow Efficiently Purges
Moisture when a Door Opens
Moisture when a Door Opens
Automated Humidity control
Low Flow Conserves N2
when Doors Closed and %RH Under Set Point
when Doors Closed and %RH Under Set Point
High Flow Efficiently Purges
Moisture when Door Opened or %RH Under Set Point
Moisture when Door Opened or %RH Under Set Point
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.
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 |