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Cincinnati Sub-Zero Z-Plus Reach-In Temperature/Humidity Chambers

Home› Products› Environmental Test Chambers› Cincinnati Sub-Zero› Cincinnati Sub-Zero Z-Plus Reach-In Temperature/Humidity Chambers

Product Overview

The Z-Plus is Cincinnati Sub-Zero’s general-purpose reach-in — the workhorse for temperature cycling, steady-state soak and conditioning, and accelerated stress testing. It comes in seven workspaces from 8 to 96 cu ft, as a temperature-only (ZP) or temperature/humidity (ZPH) build, with a choice of three refrigeration systems — single-stage, the patented Tundra®, or cascade — matched to how cold the test has to go. The EZT-570S touchscreen runs the profile and logs the result. Choose the Z-Plus when you load by hand through a front door; for benchtop-scale loads see the MicroClimate, and for large assemblies the walk-in.

Other CSZ chamber families
MicroClimate Compact — benchtop and compact reach-in for small loads Walk-In Chambers — modular & welded rooms, 200 to 8,000+ cu ft HALT / HASS Time Compressor — rapid thermal cycling plus all-axis vibration Thermal Shock — hot↔cold transitions in seconds — air or liquid Battery Test Chambers — temp/humidity with thermal-runaway safety
Cincinnati Sub-Zero Z-Plus reach-in temperature/humidity chamber — stainless interior, fog-free window, EZT-570S touchscreen controller, on casters.
CSZ Z-Plus reach-in temperature/humidity chamber — 8 to 96 cu ft, single-stage / Tundra / cascade refrigeration, EZT-570S touchscreen control.

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
General-purpose temperature (ZP) or temperature/humidity (ZPH) reach-in, loaded by hand through a front door — the ZP build omits the water system, the ZPH build adds it.
Workspace volume / size class
Seven standard workspaces from 8 to 96 cu ft (230 to 2,718 L): ZP(H)-8, -16, -32, -44, -64, -80, -96. Workspace runs 24″ cube (8 cu ft) up to 48″×72″×48″ (96 cu ft).
Cabinet / construction
Stainless-steel interior with an oven-baked, powder-coated exterior; double gasketing for a vapor-tight seal; two fully welded 4″ access ports (left and right) for cable routing; fog-free viewing window with interior light; single-handed lockable latch; casters and leveling legs. Each chamber is fully pressure-tested.
Access & loading
Front door with a single-handed lockable latch; slide-out non-tipping adjustable product shelf; lowered workspace for easier loading; removable side panels for full system access.
Temperature range
Up to +190°C standard (an extended option reaches +250°C on non-humidity units). Low end is set by the refrigeration tier: −34°C single-stage, −45°C Tundra®, down to −70°C cascade.
Humidity range
ZPH humidity models: 10% to 98% RH standard (a low-RH option extends the range to 5% to 98% RH), held to ±3% RH at steady state, using a fast-response humidity system with an electronic solid-state sensor. Temperature-only ZP models omit the water system entirely.
Refrigeration system / tier
Three selectable systems: single-stage to −34°C, the patented Tundra® system to −45°C (saving up to 54% on operational cost), and cascade to −70°C. Environmentally safe, non-flammable, zero-ODP refrigerants; service taps and pressure gauges included. LN2 and CO2 boost cooling are optional for faster transitions.
Ramp / change rate
Performance packages give faster ramp rates; an extra-heat and LN2-boost option speed transitions. Heating performance is rated at 230 V, 60 Hz, 24°C ambient (lower voltages extend it); transition rate is quoted per configuration.
Uniformity & control tolerance
Temperature control tolerance is ±0.5°C at steady state after stabilization; enhanced-airflow design and double-gasketed insulation hold the setpoint across the workspace. (Distributed shelf load capacity is 100–110 lbs depending on size.)
Air handling
Enhanced air-flow plenum circulates conditioned air across the workspace for uniform temperature and humidity around the load.
Controller
EZT-570S touchscreen — profiles up to 99 steps and 1,000 cycles (ramp by time or °C/min), data logging with batch/lot and operator notes, audit trail, up to 30 users with four security levels, and email/text alarm notification. USB port; configurable in 28 languages.
PC software
Optional EZ-View Windows software monitors, controls, datalogs, and profiles up to 31 chambers from one central PC.
Data & communications
Ethernet TCP/IP, EIA-232, and EIA-485 standard; optional IEEE-488 (GPIB). Remote monitor/control over LAN VNC; email of data, alarm, and audit-trail files; daily FTP backup. A safety-relay connection removes power from the device under test when the chamber is not running.
Electrical
208/230 V, 1- or 3-phase, 60 Hz (50 Hz available); wiring lands on numbered, color-coded terminal strips; all branch power and control circuits individually fused. UL-508A listed electrical panel. Amperage may increase on humidity models — see the quotation for actual values.
Safety devices
Primary over-temperature limit to protect the product and an over-temperature safety limit to protect the chamber; a redundant product hi/low limit is optional. Safety-relay connection protects the device under test.
Options & accessories
Dry-air purge, recirculating-water supply, demineralizer cartridges, low-RH, LN2 / CO2 boost or cooling, GN2 purge, 10″ controller screen, chart recorder, additional / reinforced shelves, reinforced floor, glove ports, refrigeration-monitor package, condensation control, bar-code start, main power disconnect, temperature-controlled door lock, and the EZ-View software package.
Standards & compliance
Humidity models meet a range of commercial and military moisture-resistance test standards; thermal-cycling work supports MIL-STD-883 Method 1011 and JESD22-A104. UL-508A listed panel.
Build & lead time
Configured / custom build; quote-only (no published price list). The ZP-Express program ships the most popular ZP / ZPH models with common options in 2–4 weeks from order acknowledgment; other configurations carry a longer build lead time.

Common Applications

  • Temperature cycling and steady-state soak / conditioning of electronics, components, and small assemblies
  • Humidity and moisture-resistance testing to commercial and military standards (ZPH models)
  • Accelerated stress and reliability testing of circuit boards and sub-assemblies
  • Freeze-thaw and conditioning of materials, coatings, and packaging
  • Quality-control and incoming-inspection conditioning on the lab bench or floor
Fit limit: the Z-Plus is a hand-loaded reach-in — size the article and fixturing to about a third of the workspace. For a benchtop footprint see the MicroClimate; for racks, carts, or full assemblies that you walk in to load, see the walk-in / drive-in chambers.

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 Z-Plus 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.