Views: 5 Author: Sanwood Technology Publish Time: 2026-09-01 Origin: Sanwood Technology
Environmental test chamber selection should start with the stress applied to the test item, not with a product family's temperature range. Temperature and humidity, controlled temperature change, thermal shock, reduced pressure, and climatic conditions combined with vibration are different test tasks. Similar temperature endpoints do not make the equipment interchangeable.
First define which conditions must reach the test item, whether they act simultaneously or in sequence, and how quickly they must change. This identifies the chamber family. The loaded arrangement, interfaces, operating state and site limits then determine the final configuration.
Required test stress | Chamber family to evaluate | First selection question |
Temperature + humidity | Temperature Humidity Test Chamber | Must both conditions be controlled, and how will the samples be arranged? |
Rapid, controlled temperature change | Rapid Temperature Change Test Chamber | What profile and temperature-change rate does the test require? |
Abrupt hot/cold transition | Thermal Shock Chamber | How must the test item experience the transition? |
Reduced atmospheric pressure | Altitude Test Chamber | Is pressure applied alone or together with temperature? |
Climatic conditions + vibration | AGREE / Temperature Humidity Vibration Chamber | What climatic profile, vibration input and interface are required? |
A controlled temperature-change profile and an abrupt hot/cold transition apply different stresses to the test item. Adding humidity, reduced pressure or vibration changes the equipment requirement again. Define the stress, sequence and transition method first; then compare temperature range, workspace and performance against a specific model under its stated operating conditions.
When temperature and relative humidity must be controlled together, a Temperature Humidity Test Chamber is the first family to evaluate.
Across relevant SANWOOD temperature-humidity configurations, nominal workspaces range from 80 to 1,000 L. Depending on the selected model, temperature options extend from -70°C to +180°C, while selected configurations cover 10% to 98% RH. A dynamic-balance control approach regulates temperature and humidity output as conditions change. Confirm the usable temperature-humidity combination for the quoted model, test load and operating point.
A controlled temperature-change profile may require a Rapid Temperature Change Test Chamber.
Selected SANWOOD configurations provide nominal heating and cooling rates from 5°C/min to 25°C/min, with temperature options extending from -70°C to +180°C. The control system can compensate for heat released by an operating test item to help follow the programmed profile during environmental stress screening. The proposal must still define the rate basis, temperature interval and test load; a catalog rate should not be treated as the actual performance of a loaded test item.
When the test requires an abrupt transition between hot and cold conditions, review a Thermal Shock Chamber.
SANWOOD provides two-zone systems that move the test item between hot and cold zones, as well as three-zone systems that keep the test item stationary while switching the airflow path. For selected two-zone configurations, the basket-drive mechanism can transfer the test item between zones within 10 seconds under the stated test method. Depending on the configuration, high-temperature zones extend from +150°C to +200°C, while low-temperature zones extend from -10°C down to -65°C or below. Transfer time, exposure time and temperature recovery remain separate selection requirements.
When reduced atmospheric pressure is part of the test, review an Altitude Test Chamber.
SANWOOD altitude chamber configurations extend from atmospheric pressure down to 0.5 kPa. The pressure-control and temperature systems work with door-compression devices and temperature-resistant seals to maintain the specified chamber conditions. Selected models use a six-level safety-interlock architecture that can include pressure-tolerance protection, overtemperature protection and excessive-vacuum alarms. Selected configurations can also record the temperature-pressure sequence at sampling intervals down to one second and support USB data export. State whether pressure and temperature must act together; the usable combination, duration, protection architecture and logging functions remain model-specific.
When climatic conditions and vibration must be applied together or in a defined sequence, review an AGREE Test Chamber or Temperature Humidity Vibration Chamber configuration.
Selected SANWOOD AGREE Test Chamber configurations cover temperatures from -70°C to +180°C and coordinate climatic conditions with vibration input. The chamber can be integrated with an electrodynamic or hydraulic vibration system. Available axes, frequency ranges and control methods depend on the selected shaker, fixture arrangement and test orientation; multi-axis testing should not be assumed from the chamber alone. The chamber interface, fixture, floor opening or blind plate, test load and control method therefore need to be reviewed as one project configuration.
External dimensions do not define the required workspace. The loaded arrangement may include supports, fixtures, cable-bending space, monitoring connections and working clearance. Multiple samples can require a different chamber from a single test item, even when their total volume appears similar.
Also identify whether the test item will operate under power, how it will be loaded and removed, which utilities are available, and whether the project has additional safety requirements. These details determine whether to review a standard chamber, a modified configuration or a walk-in system.
Founded in 1995, SANWOOD operates a 30,000 m² manufacturing center and provides international installation, maintenance and repair support. Company materials list ISO 9001, ISO 14001 and ISO 45001 management-system certifications. Depending on the model and project scope, product documentation may include CE conformity documents, SGS-issued documents, UL-issued documents and China Energy Conservation Product Certificates. These documents have different scopes; confirm the exact document title, covered model, certificate number, validity and configuration in the quotation package.
A useful inquiry describes the test rather than requesting a chamber by name alone. Depending on the project, provide:
the applicable test method or internal procedure;
required temperature, humidity, pressure or vibration conditions;
the required temperature-change rate or environmental transition method;
test-item dimensions, quantity and loaded arrangement;
fixtures, cables, monitoring connections and other interfaces;
whether the test item will be powered during testing;
loading access, utilities, installation conditions and site constraints;
required product-certification or project-delivery documents.
Not every project requires every item. The objective is to provide enough information to evaluate the equipment family and configuration against the intended test.
Start with the required conditions and how they must reach the test item. Identify whether the test involves temperature and humidity, controlled rapid temperature change, abrupt hot/cold transition, reduced pressure, or climatic conditions combined with vibration. Then review the loaded arrangement, interfaces, powered state and site requirements.
Rapid temperature change follows a controlled temperature profile. Thermal shock selection depends on how the test item transitions between hot and cold conditions. Similar temperature endpoints do not make the two equipment categories interchangeable.
Some configurations combine environmental conditions, but the available combinations and performance are model-specific. State whether the conditions must occur simultaneously or in sequence, then confirm the complete requirement against the selected chamber and operating setup.
For a specific project, use the SANWOOD Contact Us page to submit the test method, environmental conditions, loaded arrangement, powered-operation requirements, fixture and interface needs, site constraints and required delivery documents.
SANWOOD can then evaluate the appropriate chamber family and configuration for the stated test. Available ranges and performance depend on the selected model, workspace, test load and operating conditions.
