Associated Environmental Systems offers a range of prefabricated, tight-tolerance environmental walk-in rooms that are easy to ship and install. Major features include:

• Forced air circulation systems distribute air evenly and constantly recirculate it, maintaining uniform and accurate temperatures and humidity.
• Temperature Ranges are from -73°C (-100°F) to +85°C.
• Refrigeration system meets the room's load demand and operates continuously in cooling mode. Single-stage mechanical units operate at -35°C and above and two-stage cascade units at below -35°C.
• Electric heating system provides very accurate and straight line control of temperatures. System is reliable and has a long life.
• Humidity System choices are the conditioned fine Mist System or the Steam Generator System. Different ranges are available including special dehumidity ranges to 5% RH.
• Prefabricated room construction consists of modular, sandwich-type panels with a metal skin inside and outside. Panels are easy to ship and assemble.
• Multipane viewing windows can be ordered in custom sizes.
• Incandescent or fluorescent lighting is vapor-proofed and sealed.
• Instrumentation consists of single or two-channel microprocessor programmers with an accuracy of ±.25°C or better at the sensor. Other options include: RS-232C, RS-422A, IEEE-488 interface.
• Safety standard is a redundant control circuit with its own controller and failsafe contactor. Many other options are available.

Refrigeration Systems
AES supplies a refrigeration package that supports the load demands of the Walk-In Environmental Room.

• Single-stage mechanical refrigeration systems operate at -35°C and above.
• Two-stage cascade refrigeration systems (air cooled or water cooled) operate below -73°C.

All Walk-in Room Systems:

• Operate continuously in cooling mode.
• Provide a hot gas by-pass system to automate capacity reduction when the room is at the set point temperature.
• Are constructed with high quality components including: liquid line solenoids, liquid sight glass, dryers, strainers, and TX valves.
• Contain Copeland semihermetic (or equal) compressors.
• Contain Penn (or equal) controls.
• Comply with ASHRAE guidelines for piping and rating.
• Are factory-assembled and tested.
• Are simple to maintain because components are easily accessible and clearly labeled.

Up to 5 HP units can be mounted on the roof of the walk-in room. Larger units are installed on the floor next to the room.

Comprehensive piping diagrams, schematics, and charging data are available for our environmental walk-in rooms.

Walk-in Room Construction
Rooms are constructed of prefabricated metal tongue and groove sectional panels. An assembled room has continuous steel perimeters to hold panels tightly in place.

Panel features include:

• 100% insulation
• Light weight for easy handling – average weight of the largest panel is 84 lbs.
• Alignment pins for accurate fit.
• Steel straps connect locking arms with locking pins on opposite sides of panels.
• Cam-actuated locks ensure tight fits and accommodate frequent assembly/disassembly for relocating or enlarging the room.

Viewing Windows
The standard multipane window has a 14" by 23" viewing area. Thermostatically controlled heater wire in the window casing minimizes condensation and frost formation on the window surface. Custom size windows are available.

Lighting
All lighting fixtures are vapor proof and sealed. Both incandescent and flurorescent lighting fixtures are available.
Incandescent lighting is recommended for high temperature units operating above +110°F and low temperature units operating below 0°F.

Forced Air Circulation Systems
All walk-in rooms incorporate forced air circulation. Differences in the size of the test chamber and its internal configuration are accommodated by various airflow patterns, including horizontal, vertical, or a combination of both. These provide an even distribution of air and tight temperature control. Noise is also a consideration.

The air circulation systems use external heavy duty motors to distribute air evenly and constantly recirculate it, maintaining uniform and accurate temperatures and humidity. The high quality motors have internal cooling fans, protectors, and stainless steel shafts. Aluminum or stainless steel squirrel cage blowers circulate the air. All mixing is within a plenum that is external to the walk-in room work area.

In tight tolerance environmental walk-in rooms, air must be evenly distributed and constantly recirculated at a higher than normal rate in order to maintain uniformity and accuracy. A portion of one wall of the room is devoted to a conditioning plenum. Air is drawn into the lower part of the plenum through a set of cleanable filters, across an evaporator coil and vertically across electric heaters. The air then enters centrifugal fans and is discharged into a perforated ceiling plenum. The air flows vertically downward in the room and is returned horizontally through the cleanable filters to the wall plenum.

Electric Heating System
The combination of airflow, instrument response, and fast-reacting heaters provides very accurate and straight line control of temperatures.

Air is passed over the fast response, low watt density heaters with ceramic cores. This type of system provides very accurate air and humidity control. A separate instrument precisely controls the heat level.

The heating systems have a long life and are very reliable, with no down time.

Instrumentation
Instrumentation consists of either single or two-channel microprocessor programmers with an accuracy of ±.25°C or better at the sensor. The sensors are fast acting 100 Ohm. platinum type.

Other options include: RS-232, IEEE-488 interface.

Safety
Standard is a redundant control circuit with its own controller and failsafe contactor. To prevent thermal runaway, the safety control shuts off power to the heater circuit and the circulation blowers continue to distriibute heat within the room. This feature is particularly important if there are heat-generating items in the walk-in room. When the temperature goes down, the safety control closes and power is restored to the heaters.

Other available safety options are: High Temperature Safety with Complete Shut Down of Room with Manual Reset and Visual Indication, Low Temperature Safety with Complete Shut Down of Room with Manual Reset and Visual Indication, Both High and Low Temperature Safety with Manual Reset on Both and Visual Indication, Audible Alarm, and Remote Station Alarms.

Electrical Requirements
Standard power requirements include 208V 3PH 60HZ, 220/240V 3PH 60HZ, 460V 3PH 60HZ, 208/220V 1PH 60HZ. Other power requirements are available upon request.

Temperature Ranges
Various ranges can be provided, including fast change rates with your product load. Ranges from -73°C (-100°F) to +85°C are available.

Humidity
Standard ranges available are: 20% to 95% ±5% RH. 10% to 98% ±2% RH. Different ranges available including special dehumidity ranges to 5% RH.

Humidity System
Two Humidity systems are standard:

• Fine Mist System is recommended when doing continuous testing with high live loads.
• Steam Generator System is recommended for rooms being used for low and high humidity testing within the range of +40°F to +130°F.

The conditioned Fine Mist System uses your local water supply. Steam is created within a plenum outside the room area by spraying a fine mist over a stainless steel sheath-type heater. The circulation system carries this steam throughout the walk-in room.

The Steam Generator System uses an external self-contained steam generator with all necessary safety and water level controls to provide humidities to saturation point within the walk-in room.

PGC has been providing high quality walk-in chambers since the mid-1970's. These environmental chambers have applications in diverse disciplines such as pharmaceutical stability testing, TAPPI and ASTM testing, biological and biotechnological research, electronics, and many other applications.

Their many years of experience in designing, manufacturing and installing walk-in rooms enable them to provide the user with unparalleled expertise. PGC 's staff will assist in planning your room to meet your specific needs.

PGC will provide sole-source responsibility for both room construction and its conditioning equipment. Using modular insulated panels having either a 32 R-value (four inch) or a 40 R-value (five inch), enables PGC to deliver maximum efficiencies and uniformities.

More importantly, utilizing PGC 's unique method of controlling moisture in air, the rooms are able to attain unmatched levels of humidity and temperature control and uniformity. Unlike many other manufacturers, PGC 's humidity methodology does not use vapor generators or atomizers as a humidity source. A dew point generating system achieves superior levels of humidity performance. The PGC SmartPad controller is a user-friendly system that provides optimal control for the PGC conditioning units. The SmartPad is equipped with direct readings in both temperature and humidity. It also features 60-segment programming for automatic cycling and also ramping and soaking excursions. High-low or deviation alarms are standard as well as a serial communications port.

Having designed, built, and installed a wide variety of walk-in environmental rooms for nearly three decades, makes PGC an ideal source for planning and designing your walk-in chamber. To further insure product integrity, PGC also assembles and thoroughly tests all systems before shipment. PGC is fully capable of upgrading any brand of existing rooms. Due to the flexibility of the PGC conditioning system, PGC can also condition existing rooms, like testing and quality control laboratories.

Since 1972, Russells has utilized its expertise in refrigeration and air conditioning technologies to manufacture environmental rooms which can maintain –40° F on a continuous basis or chambers which can reach as high as 185° F. These test systems can be supplied with temperature and humidity PID controls or with computerized data acquisition and control systems. They allow customers to undertake long-term stability testing, accelerated testing, humidity testing, comparative stability testing, forced long-term stability testing and stability of active pharmaceutical ingredients. Our environmental rooms and incubators are designed to meet FDA and ICH guidelines for stability testing and storage. They're installed in facilities around the world where technicians can reach-in, walk-in or even drive-in to conduct a wide variety of simulation testing. We use the highest quality components in fabrication to ensure that our environmental rooms continue at top performance for many years.

A Russells application engineer can assist you in selecting the environmental room configuration and size that's best for you or we can custom design from our standard configurations.

Printable PDF - Environmental Rooms

Applications for Our Environmental Rooms:

• Biological/Biotechnology Research
• Pharmaceutical Stability
• Shelf Life Experiments in the Food Industry
• Entomology (Insect Rearing) Research
• Industrial Environmental Testing
• Crop Science
• Soil Science
• Laboratory/Medical
• Electronic Burn-In
• Seed Storage
• Plant Growth
• Consumer Product Testing
• Archival Storage
• Cold Storage

Features:

• Many Standard Sizes
• Reach-In, Walk-In or Drive-In Environmental Rooms
• Custom Sizes Available
• Ozone-Safe Refrigerant
• Prefabricated for On-Site Installation
• User-Friendly Controls
• Can Be Relocated

Standard Features

• Construction:

• Prefabricated urethane insulated panels, modular
  design is field assembled.
• Hardware:

• Hinges and latches heavy duty polished castings
• Doors:

• Doors are available in several standard sizes including widths of 34", 36", 42", 48", and 60". Double doors can be provided
• Finish:

• Room finish and materials are available in many
  combinations including aluminum, galvanized steel and stainless steel. Custom colors can be provided.
• Instrumentation:

• Many instruments are available. A microprocessor based P.I.D. with digital display in C or F control system is used. Programmers and communications can be provided
• Relative Humidity and Temperature:

• Relative humidity is controlled by a microprocessor based P.I.D control system with a digital display in % RH. Electronic sensors are used.
• Lighting:

• The room temperature and application will determine the lighting method. Incandescent and fluorescent fixtures can be provided.
• Refrigeration:

• Ozone safe, can be air or water cooled. Outdoor units are also available.
• Heating:

• Low mass nichrome wire elements are used to provide fast response and long life.
• Safety Controls:

• High and low temp safety controls are provided. They include visual and audible alarms.
• Options:

• Dehumidification
• Recorders
• Windows
• Access Ports
• Installation

About Russells Technical Products:

Russells environmental test chambers give you the testing tools you need to maintain your competitive edge in today's global marketplace that demands quality. You can choose your environmental chamber from our wide variety of standard models or we can custom design one to your exact specifications. Since 1972, our environmental chambers have been used throughout industry to test everything from semiconductors to semi-trucks.

Please click on the links to the right for more information or request a quote today!

Tight temperature tolerances set environmental cold rooms apart from food service refrigerators. Recent FDA regulations have made these requirements even more stringent in many cases. Why choose BioCold for your cold storage room requirements?

• BioCold uses a three-pipe proportional hot gas bypass refrigeration system with microprocessor-based PID controls to maintain temperature control of +/- 0.3°C or better, with uniformity of +/- 0.5°C throughout the cold room.
• Oversized refrigeration systems provide fast pulldown and reserve capacity.
• Oversized evaporator fan coil eliminates the need for defrost cycles at +4°C operation in most cold rooms.
• Simple, easy-to-use, easy-to-service control systems and wiring circuits. BioCold temperature controllers are "works in a drawer" and can be easily replaced without disconnecting a single wire. PLCs and printed circuit boards have their purpose, but only add unnecessary complexity to a standard cold room.
• GFCI circuit breakers mounted in the control console load center provide ground fault protection for all receptacles within the room.
• Umbrella airflow air handling system eliminates the need for a drop grid ceiling, eliminating a common, difficult-to-clean, area of dust and mold spore collection.
• 2" thick cam-locked floors, available with foamed-in-place diamond tread finish, offer 20" long ADA ramps and durable nonslip working floor surface supporting up to 600psf without reinforcement.
• Absolutely no wood in cold room wall or floor panels. Wood absorbs water, swells, and rots over time, and should be avoided.
• Optional Honeywell chart recorders, Dickson data loggers, and RS485 modbus communications to building automation or monitoring systems.
• Optional latent dehumidification or dessicant dryers offer reduced humidity control down to 10% RH at +4°C.
• As a cold room manufacturer for more than 30 years, BioCold has the flexibility and experience to provide solutions for virtually any custom cold room application.

Walk-In stability rooms are used to test and store a wide range of products in specific temperature and/or humidity conditions. Applications include, but are not limited to, shelf life testing, stability testing, pharmaceutical, packaging, life science, biomedical storage, research, and more.

Stability rooms are available in temperature and/or humidity with a temperature range of
-20°C to 60°C and optional humidity from 10% to 95%. These rooms are designed with ceiling mounted conditioning systems and modular panel construction utilizing 4" polyurethane-foamed panels. These rooms are designed with stainless steel interior and white embossed exterior. All CSZ stability rooms meet ICH Q1A guidelines.

Each conditioning system is tested before shipment. A factory-trained service team can also assist with the assembly, start-up and training of your new environmental room.

Features & Benefits

• CSZ EZT-560i Touch Screen Controller is designed to save chamber programming and setup time. Removable USB I-stick simplifies access to profile, data, alarm, and audit trail files. The controller also includes three levels of security access, password entry system with password aging and authentication.
• High/Low product temperature alarms
• Stainless Steel Interior
• White Embossed Aluminum scratch/rust resistant Exterior
• One 48" wide x 78" high Door with one (1) 14" wide x 24" high Heated Viewing Window
• Two Interior Vapor Proof Lights
• Humidity water filtration system is included to filter impurities and protect your chamber interior
• An electronic humidity sensor is used on all humidity models for accuracy and minimal maintenance
• Integral Air-Cooled Condenser
• Easy move-in and assembly

Click here for a full list of features and options for CSZ stability rooms.

About CSZ:

CSZ is a leading manufacturer of environmental test chambers and temperature-controlled equipment. Since 1940, CSZ continues to have the most valued and competitive test chambers on the market. Visit CSZ for more information on their environmental test chambers.

Pharmaceutical Stability Room from Parameter Generation. PGC's superior control easily exceeds ICH guidelines in regards to humidity and temperature specifications. The sources for humidity, dehumidification, heating, cooling, and circulation are all packaged in one self-contained unit. System will maintain the standard conditions of 25/60%, 30/60%, 25/65%, 30/65%, 25/40%, 40/75%. Energy efficient system operates off 115 volt 15 amp circuit.

Since our generating systems are self-contained, they can be easily used to condition existing spaces, small walk-in rooms, and custom chambers. The size of system allows it to sit on top of existing chambers or rooms and circulate conditioned air through the contained space.

PGC's superior control easily exceeds ICH Guidelines in Regards to Humidity and Temperature Specification.

PGC conditioners are designed to easily connect to the conditioned space. This unit does not require compressed air or ultra pure water (tap water is generally fine). The interior and exterior are constructed of corrosion-resistant stainless steel. Low watt density heaters also contribute to the unit's durability. Various safety devises are also included.

The conditioner is controlled by PGC's SmartPad, a user-friendly system that provides optimum accuracy and control. The SmartPad is equipped with direct readings for both temperature and humidity. It also features 60 segment programming for automatic cycling. High-low or deviation alarms and serial communications port (with software) are standard.

Paper: Issues to Consider when Complying with ICH Guidelines Involving Temperature and Relative Humidity Conditions

Click here to read this article:

http://www.humiditycontrol.com/pgc-ich.html