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Double-Layer Temperature and Humidity Test Chamber

2026.09.24 09:52:45

This 55-second video introduces the DERUI double-layer temperature and humidity chamber. Instead of a single test space, the cabinet carries two independently controlled layers, upper and lower, each able to run −40 °C to +150 °C and 20 % to 98 % RH. The layer size is customizable; the unit shown gives each layer 500 mm width, 600 mm height and 500 mm depth, a 150 L volume. The chamber is presented for testing batteries, chips and auto parts, and the point the presenter makes is floor space — two test layers standing in the footprint of one chamber.

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2 LayersUpper and lower, independent

−40 to +150 °CTemperature range

20 – 98 % RHHumidity range

150 LVolume per layer, shown

What This Double-Layer Chamber Video Shows

The video is a short walk-round of one cabinet, and it stays on a single idea: the machine is not one chamber but two. That changes how a laboratory plans its test throughput, so it is worth reading the detail rather than the summary figure.

The two-layer structure

▸ The cabinet has two layers, an upper and a lower one, each with its own door, viewing window and control panel.
▸ The layers are stacked to share one frame and one cooling system, so the machine occupies roughly the floor area of a single chamber.
▸ The layer size is customizable, so the volume per layer is a requirement to state rather than a fixed choice.

What each layer can run

▸ Both layers cover the same working range: −40 °C to +150 °C and 20 % to 98 % RH.
▸ The configuration shown in the video gives each layer 500 mm width, 600 mm height and 500 mm depth, a 150 L volume.
▸ Because each layer has its own control panel, the two can hold different setpoints at the same time — the two test programmes do not have to share a schedule.

What the presenter says it is for

▸ Batteries — cells, modules and small packs that have to be cycled through temperature and humidity.
▸ Chips — semiconductor and electronic assemblies that need a stable simulated climate.
▸ Auto parts — components that must be qualified against the temperature and humidity profile of the vehicle they go into.

How the Two Layers Are Used

Step 1 - Decide what each layer is for

Two layers are only an advantage if two programmes are genuinely running. Fix what each layer will test — a long qualification on one layer, incoming inspection on the other — before the volume per layer is chosen.

Step 2 - Load and connect each layer

Specimens go in through the door of the layer they belong to, and any power or thermocouple leads are routed through the layer's own cable port, so a specimen can stay energised and monitored while the layer cycles.

Step 3 - Set the profile on each control panel

Each layer is programmed from its own panel: the two setpoints, the ramp between them, the dwell at each end and the cycle count. One layer can hold a constant climate while the other runs a cycling programme.

Step 4 - Record each layer separately

Data is written per layer, so the temperature and humidity history of one programme is not mixed into the other. Ask how the records are separated before the chamber is specified.

Interpretation note: stacking two layers in one cabinet saves floor space, not test time. Each layer still has its own working volume, its own loading access and its own stabilisation behaviour, so the run time for a programme is unchanged. Published fluctuation and uniformity figures are measured under defined conditions — agree the load, the measurement points and the empty-versus-loaded condition with the supplier before the test plan is fixed.

Double-Layer Temperature and Humidity Chamber Specifications

Parameter	Specification	Selection note
Structure	Two layers, upper and lower, each with its own door, viewing window and control panel	The number of layers is the first thing to settle: two or three layers are built on the same principle.
Volume per layer	150 L as shown; layer size customizable	Match the volume to the specimen plus its fixture, leaving clearance for air movement in each layer.
Internal dimension per layer	500 mm width × 600 mm height × 500 mm depth	Confirm the internal dimension and its axis order on the quotation, since the layer size is customized.
Temperature range	−40 °C to +150 °C	State both ends of the range. A lower-temperature version of the same chamber is a different refrigeration build.
Humidity range	20 % to 98 % RH	Confirm whether the low-humidity end is needed, and at which temperature.
Temperature fluctuation	≤ ±0.5 °C, without load and temperature stable	Ask under which conditions the figure is measured.
Humidity fluctuation	≤ ±2.5 % RH	Water is supplied through a circulating water system.
Internal chamber material	Stainless steel 304	Relevant where condensation runs inside the layer for long periods.
Controller	Programmable LCD touch screen, one panel per layer	Confirm how programmes and records are kept apart between the two layers.
Data output	RS-232, USB optional	For storing and analysing a multi-cycle programme.
Power supply	Single-phase 220 V or three-phase 380 V, 50 Hz	Confirm the supply against the number of layers and the volume you order.
Typical applications	Batteries, chips, automotive parts	Confirm whether the specimen has to be powered, charged or monitored inside the layer.

Selection note: the figures above describe the configuration shown in the video on the standard temperature and humidity chamber line. Both the layer volume and the layer count are customizable, so confirm the model designation, the internal dimensions, the voltage and the accessories on the quotation for your application.

Where This Chamber Is Used

▸ Battery cells, modules and small packs, where a temperature and humidity profile has to be run repeatedly.
▸ Semiconductor and electronic assemblies, including chips and boards that are tested in a simulated climate.
▸ Automotive components that are qualified against the temperature and humidity conditions of the vehicle environment.
▸ Laboratories that need two different programmes running at the same time but only have floor space for one cabinet.

Why Two Layers Instead of Two Chambers

A standard environmental chamber is a floor-standing cabinet: the machine, its refrigeration deck and its working space all take up room on the floor, and a second chamber means taking a second footprint. A double-layer chamber changes that calculation. Two test spaces are built into one frame, one refrigeration system and one cabinet, so a laboratory can run two programmes where it previously had room for one machine.

What the stacked design does not change is the test itself. Each layer is still a chamber in its own right, with its own door, its own control panel and its own result record, so the specimen inside a layer sees the same kind of environment it would see in a single-layer cabinet of the same volume. The saving is in the room and in the services, not in the test conditions.

That is also why the layer size is stated as customizable. If the specimen is large, a two-layer cabinet with an undersized layer is not a saving at all — it is a chamber with no usable working space for the specimen. Confirm the volume per layer against the largest specimen you actually intend to test, and check the access height for loading it.

What to Confirm Before You Buy

▸ Whether the two layers are genuinely independent, or whether they share one refrigeration and one control circuit.
▸ The volume per layer, checked against the largest specimen plus its fixture — not against the total volume of the cabinet.
▸ Both ends of the temperature range and the humidity range your standard requires, not only the printed figures.
▸ How the loading is done: door opening height, shelf or tray locations, and the mass each layer can carry.
▸ Site conditions: power supply, clearance above the cabinet for the upper layer door, and the route the machine takes to reach the room.

What Information Is Needed for a Quotation

▸ Specimen type, dimensions and mass, and whether it has to be powered, charged or monitored inside the layer.
▸ The applicable standard, the temperature and humidity profile, and whether the second layer runs a different programme.
▸ The volume you need per layer — the layer size is customizable, so the requirement sets the cabinet size.
▸ Site conditions, including the power supply and the available floor space and ceiling height.
▸ Delivery terms, destination port, and whether installation and commissioning are required.

Frequently Asked Questions

What is a double-layer temperature and humidity test chamber?

It is one cabinet containing two separate test spaces, an upper layer and a lower layer, each with its own door, control panel and working volume. Both layers run the same working range — in the configuration shown, −40 °C to +150 °C and 20 % to 98 % RH — and the layer size is customizable.

Can the two layers run different programmes at the same time?

Each layer has its own control panel, so a different setpoint, ramp, dwell and cycle count can be set on each one. Whether the two can hold materially different conditions at the same time is set by the refrigeration and control arrangement of the model, so ask for it to be confirmed on the quotation.

Does the rotating or stacked design change the test conditions?

No. Each layer is a chamber in its own right, so a specimen inside a layer sees the same class of environment it would see in a single-layer cabinet of the same volume. What the stacked design changes is the floor space and the shared services, not the test conditions.

What volume does each layer have?

The unit in the video has a 150 L volume in each layer, with internal dimensions of 500 mm width, 600 mm height and 500 mm depth. The layer size is customizable, so the volume can be matched to the specimen rather than the specimen to the cabinet.

What is this chamber used for?

In the video it is presented for batteries, chips and auto parts — specimens that have to be cycled through temperature and humidity as part of qualification. It suits any laboratory running two separate temperature and humidity programmes that would otherwise need two floor-standing chambers.

Does it really save space?

It saves floor area, because two test layers share one frame, one refrigeration system and one cabinet. It does not reduce the room needed above the cabinet, since the upper layer still opens upwards in use, and it does not shorten a test programme.

What power supply does it need?

Single-phase 220 V or three-phase 380 V, both at 50 Hz. Tell us your site supply at the enquiry stage so the configuration and the on-site wiring can be agreed before the machine ships.

Video Summary

This 55-second video introduces the double-layer temperature and humidity chamber in one pass: two layers, upper and lower, each covering −40 °C to +150 °C and 20 % to 98 % RH, with a customizable layer size. The configuration shown gives each layer 500 mm width, 600 mm height and 500 mm depth — a 150 L volume per layer. The chamber is presented for testing batteries, chips and auto parts.

The closing point is the one worth keeping. Two layers in one cabinet save floor space and shared services, and the layer size stays customizable, so the chamber can be sized to the specimens you actually test. Confirm the volume per layer, the independence of the two control circuits and your site supply before the quotations are compared.

Need a Double-Layer Temperature and Humidity Test Chamber Proposal?

Send the specimen details, the volume you need per layer and your site conditions through the contact page, and we will confirm the model and the configuration for your application.