Product Overview
A CSZ walk-in chamber is sized for large physical loads — full battery packs, automotive modules, large aerospace components, and batch stability storage — that you roll in on racks or carts. It comes in two constructions: WM-Series modular panel, economical and relocatable, built from 4″ locking foam panels; and WW-Series welded, a hermetically sealed one-piece room for higher temperatures (to +190°C), faster change rates, and combined environments. Both run 200 to 8,000 cu ft (larger as projects) with an exterior plenum conditioning system that keeps all the workspace inside. Choose a walk-in when the article has to be rolled in; for full vehicles, see the drive-in.
Other CSZ chamber families
Drive-In Chambers — full vehicles with NVH road simulator
Z-Plus Reach-In — hand-loaded reach-in, 8 to 96 cu ft
Stability Walk-In — ICH Q1A batch-volume stability rooms
Battery Test Chambers — temp/humidity with thermal-runaway safety
Specialty & Custom — built-to-spec and unusual-environment chambers
Key Features & Benefits
- Built by the largest environmental-simulation manufacturer — Cincinnati Sub-Zero is a brand of Weiss Technik — over 80 years of environmental-simulation experience behind every chamber, from a benchtop reach-in to a full drive-in. The chamber is a reference platform, not a one-off.
- Configured to the test, not sold off a shelf — temperature range, refrigeration tier, humidity, size, controls, and combined environments are each specified to your standard and article, so you buy the capability the test needs and not a wider, costlier envelope. You pay for the cold you use, not the cold on the spec sheet.
- Fully welded, vapor-tight, built to last — fully welded ports and seams, double gasketing, and stainless interiors keep the workspace sealed against the leaks that wreck uniformity and shorten chamber life. The chamber outlasts several generations of the products tested in it.
- One touchscreen controller, remote access built in — the EZT touchscreen stores multi-step profiles, logs data with an audit trail, and sends email and text alarms — reachable from any device on the network with no extra software. Run, monitor, and pull data from your desk or your phone.
- A single source for the whole test floor — because the same controls, software, and engineering span reach-in, walk-in, drive-in, and custom builds, one CSZ relationship covers a lab that grows from a benchtop to a vehicle chamber. The chamber you add next speaks the same language as the one you have.
Specifications
- Chamber type
- Walk-in temperature/humidity room for testing or storing large physical loads — you walk in to load racks or carts. Two constructions: WM-Series modular panel and WW-Series welded (solid).
- Workspace volume / size class
- 200 to 8,000 cu ft standard (custom sizes available, and project-scale installations much larger). Modular chambers reach virtually any size or configuration by adding pre-fabricated panels.
- Cabinet / construction
- WM modular — 4″ polyurethane-foamed panels lock together into a tightly sealed room with a stainless-steel interior and aluminum or white-embossed exterior; installable, relocatable, and expandable. WW welded — one solid piece, zinc-coated exterior with polyurethane-enamel finish, Type 304 stainless interior, 6″ fiberglass-insulated continuously-welded seams forming a hermetically sealed chamber.
- Access & loading
- Walk-in entry door; optional additional / oversize doors, automatic door operation, entry ramp, reinforced treaded floor, access ports, heated windows, and vapor-proof interior lights.
- Temperature range
- WM modular: to +85°C standard (higher on request); WW welded: to +190°C. Low end is set by the refrigeration tier on both: single-stage −34°C, Tundra® −45°C, Tundra® II −50°C, cascade −68°C (ultra-low available).
- Humidity range
- 10% to 95% RH option with a solid-state humidity sensor. Temperature-only rooms omit the water system.
- Refrigeration system / tier
- Tiered refrigeration sized to the room: single-stage, Tundra®, Tundra® II, and cascade, with zero-ODP refrigerants, service taps, pressure gauges, and compressor-overload protection. The Modular Plenum Conditioning System mounts on a side or the back, outside the box, so it preserves all interior workspace; it can be added to existing walk-ins to replace or boost capacity. LN2 / CO2 boost cooling and a remote / roof-mounted refrigeration system are optional.
- Ramp / change rate
- Welded construction supports faster change rates and wider temperature/humidity ranges than modular; conditioning capacity is sized to the required ramp and load at quote time.
- Uniformity & control tolerance
- The plenum conditioning system circulates conditioned air through the room for uniform temperature and humidity around large or racked loads; the control tolerance is specified per configuration.
- Air handling
- Modular plenum conditioning units interface with the assembled box without consuming workspace; hinged service panels give easy access from the chosen mounting side.
- Controller
- EZT-570S programmable touchscreen — multi-step profiling, data logging, audit trail, and email/text alarms; remote instrument consoles optional.
- Data & communications
- RS-232 / RS-485 computer interface; remote instrument consoles and networked monitoring optional.
- Electrical
- Sized to the refrigeration and heater load (typically three-phase); high- and low-pressure switches on 3 HP-and-over systems; explosion-proof electrical available as an option.
- Safety devices
- Safety-release latches, temperature limit and alarm, refrigeration high-temperature protection, compressor-overload protection.
- Options & accessories
- Modular or welded construction, stainless interior, heated windows, vapor-proof lights, access ports, additional / oversize doors, automatic door operation, entry ramp, reinforced treaded floor, water-cooled or remote refrigeration, LN2 / CO2 boost, ultra-low temperature, explosion-proof electrical, and custom fixtures.
- Combined environments
- Walk-ins integrate additional environments — solar simulation, altitude, freezing rain, and vibration — for combined-environment testing in one room.
- Build & lead time
- Engineered / custom build to the room size and configuration; quote-only (no published price list). A large or custom room carries a meaningful build lead time.
Common Applications
- Testing or storing large assemblies — battery packs, automotive modules, aerospace components
- Batch stability storage and conditioning of large product quantities
- Solar-panel, packaging, and industrial-component testing at volume
- Combined-environment testing — temperature/humidity with altitude, solar, freezing rain, or vibration
- Biological-research and industrial cold/ambient storage rooms
Fit guide: choose modular (WM) for economical cold/ambient storage and standard stability; choose welded (WW) when the test needs high temperature (to +190°C), fast ramp rates, wider humidity, altitude, or other combined environments. For full-vehicle scale and road simulation, see the drive-in chambers; for hand-loaded articles, the Z-Plus reach-in.
Design & Selection Considerations
- Size the load to about a third of the workspace — the chamber conditions the air, and the air has to reach every surface — a load packed wall-to-wall starves the airflow and breaks uniformity. A common guideline is to keep the test article (plus fixturing and cabling) under roughly a third of the workspace volume. Oversize wastes energy and slows ramps; undersize crowds the airflow.
- Specify the cold you actually need — each tier down costs more — reaching deeper cold is the single biggest cost and energy driver. Single-stage covers most ambient-band work; Tundra, Tundra II, and cascade buy progressively colder lows; LN2 boost buys the deepest cold and the fastest ramps. Match the refrigeration tier to the standard’s required extreme, not to the widest range available. Do not buy −70°C to run a −20°C test.
- Match the ramp rate to the thermal mass — a heavy or powered load slows the temperature change the chamber can deliver and may demand a larger refrigeration package and extra-heat option to hit your transition times. A live load (a powered DUT) dissipates heat the chamber has to remove on top of everything else. Use the input form to give us the article weight and powered heat load so the ramp spec is real, not nominal.
- Confirm the article — and the chamber — fit the site — check the doorway and ceiling clearance to get the chamber in, the floor loading for a heavy or loaded chamber, and the access to load the article (a reach-in door versus a walk-in entry versus a drive-in ramp). A heavy battery pack or vehicle assembly can exceed a standard reach-in and points to a reinforced-floor or walk-in build. Plan the site before the chamber arrives.
- Plan utilities and condensate up front — size the electrical service to the refrigeration and heater load (often three-phase), provide cooling water or airflow for the condenser, a floor drain for humidity condensate, and — where LN2 or CO2 boost is used — a bulk supply with safe venting and oxygen monitoring for personnel. The chamber is only as good as the services feeding it.
- Pick the humidity and dew-point range deliberately — a humidity system adds and removes moisture down to a low-RH floor; marginal dew-point control near the cold limit can call for a dry-air purge or GN2 to prevent condensation and frost flash. Only the humidity builds carry the water system, demineralizer, and drain. Specify the RH band the test needs — a temperature-only build skips the whole water system.
To configure the right CSZ walk-in chamber:
Use the input form to send the test standard you are working to, the article size and weight, the temperature and humidity range, any combined environments (vibration, altitude, light), and the controller, software, and documentation you need. We size the chamber, refrigeration tier, and controls to the application and return a configured quote.
Environmental Test Application Sheet ›Talk to an engineer directly — Scott Prater, Principal · 917-580-0878 · scott@pratertechnical.com
Specifications compiled by Prater Technical Partners from Cincinnati Sub-Zero published product specifications.