DR-H201-50 50 L Small Environmental Test Chamber
A compact high- and low-temperature chamber for electronic components, materials, sensors and small assemblies. Its 350 × 320 × 450 mm workspace reduces laboratory footprint and conditioned volume while supporting programmable cold, dry-heat and temperature-change profiles.
Approx. 50 L workspace
-20°C or -40°C low-temperature options
Up to +150°C
Why Choose a 50 L Environmental Chamber?
A small environmental test chamber is useful when specimens do not require a large cabinet. The lower internal volume can reduce floor-space demand and shorten stabilization for appropriately sized, low-heat-load samples. It is suited to R&D, incoming inspection, design verification and small-batch quality control.
Compact Footprint
The 50 L workspace accommodates small devices and material samples without conditioning the unused volume of a larger chamber.
Two Low-Temperature Options
Select -20°C to +150°C or -40°C to +150°C according to the required method and operating margin.
Programmable Profiles
Run temperature dwell and programmed change sequences with monitoring, alarms and automatic protection.
Humidity boundary: the published DR-H201-50 specification provides temperature data but no humidity range or humidity accuracy. This page therefore describes a temperature chamber. If humidity is required, request a verified temperature-and-humidity configuration instead of assuming it is standard.
DR-H201-50 Published Specifications
| Brand | DERUI |
|---|---|
| Model | DR-H201-50 |
| Nominal workspace | Approximately 50 L |
| Internal dimensions | 350 × 320 × 450 mm |
| Temperature range options | -20°C to +150°C or -40°C to +150°C |
| Published heating rate | 3°C/min; confirm measurement range, load, supply and whether the value is average or linear |
| Published control accuracy | ±0.5°C |
| Published temperature fluctuation | ±2°C |
| Published temperature uniformity | ±2°C |
| Display resolution | 0.01°C |
| Temperature control | Cold-balance control |
| Inner chamber | Mirror-finished SUS304 stainless steel |
| Outer cabinet | Electrostatically coated steel |
| Published equipment weight | Approximately 300 kg; confirm final configuration |
| Customization | Available for ports, viewing window, color and selected performance options |
Accuracy terminology: display resolution, sensor accuracy, fluctuation and spatial uniformity are different specifications. A 0.01°C display does not mean the chamber controls the entire workspace to 0.01°C.
Standard Configuration
Workspace and Access
- SUS304 stainless-steel inner chamber
- Two stainless-steel shelves
- Three-layer vacuum observation window
- Internal lighting
- Silicone door and liner seals
Installation and Connections
- Four casters with leveling feet
- One external cable port
- Published standard port option: 50 mm or 100 mm diameter
- Power cable
- Protective alarms and fault monitoring
Refrigeration and Safety Design
Serviceable Layout
A modular refrigeration layout supports inspection and maintenance. Final compressor and refrigerant selection depends on the temperature range and market requirements.
Separated Utilities
Water-related components and the electrical distribution area are separated to reduce the effect of a leak on electrical equipment.
Protection Functions
Configure overtemperature, overcurrent, compressor pressure, overload and other alarms appropriate to the selected system.
Refrigerant note: the old page called R404A and R23 “non-polluting.” These HFC refrigerants have significant global-warming impact and their availability is regulated in some markets. Confirm the refrigerant and compliance requirements for the destination country before ordering.
Optional Configurations
Mechanical Options
- Customized cabinet color
- Additional or relocated cable ports
- Customized observation window
- Internal glass door with sample-access gloves/ports
- Additional shelves and fixtures
Performance and Safety Options
- Faster temperature-change packages where technically feasible
- Noise-reduction package
- Remote monitoring and data interfaces
- Specimen-specific electrical feedthroughs
- Risk-based reinforced or relief configuration
The old page listed 5, 10 and 15°C/min options without test conditions. Faster rates require a separate thermal-load calculation and must define the measurement range, specimen load, cooling-water/air conditions and linear versus average rate.
Applications for a Compact Temperature Chamber
Electronics
Sensors, small PCBs, connectors, controllers, displays and compact consumer-electronic assemblies.
Materials and Components
Plastics, elastomers, adhesives, coatings, fasteners and small mechanical parts under cold or dry-heat exposure.
Research and Quality Control
Material screening, incoming inspection, comparison testing, design verification and laboratory teaching.
Standards and Test-Method Selection
Depending on the specimen and industry, this chamber may provide temperature conditions used in IEC 60068 environmental tests or a customer-specific method.
- IEC 60068-2-1: cold tests for heat-dissipating and non-heat-dissipating specimens.
- IEC 60068-2-2:2025: dry-heat tests for specimens at elevated temperature.
- IEC 60068-2-14:2023: specified ambient temperature-change tests.
Not a thermal-shock chamber: a single-compartment 3°C/min environmental chamber changes air temperature gradually. It should not be described as a two-zone or three-zone thermal-shock chamber with near-instant specimen transfer.
How to Select and Operate the Chamber
Selection Checklist
- Measure the specimen and fixture envelope
- Calculate active heat dissipation
- Choose -20°C or -40°C low-temperature capability
- Define dwell times and ramp-rate method
- Confirm ports, power, data and safety requirements
Operating Workflow
- Inspect chamber, seals and utilities
- Load samples without blocking airflow
- Program limits, dwells and transitions
- Monitor specimen and chamber temperatures
- Record interruptions and allow safe recovery before opening
Frequently Asked Questions
What is the capacity of the DR-H201-50?
The published internal dimensions are 350 × 320 × 450 mm, which is approximately 50 L. Usable specimen volume is smaller because clearance is required for airflow.
Does this small chamber control humidity?
No humidity range or accuracy is published for the DR-H201-50 page. Treat it as a temperature chamber unless DERUI provides a separate verified temperature-and-humidity specification.
Which temperature range should I choose?
Choose -20°C to +150°C when the test method does not require lower temperatures. Select -40°C to +150°C when the standard or application requires additional low-temperature capability and margin.
Is a 50 L chamber large enough for my sample?
Check the specimen, fixture, cables and airflow clearance—not only nominal liters. Provide a drawing and heat-load data so usable fit and performance can be reviewed.
Can it perform thermal-shock testing?
It can run programmed temperature changes, but it is not a basket-transfer or multi-zone thermal-shock chamber. Use a dedicated thermal-shock system when the method requires rapid specimen transfer.
What does the 3°C/min heating rate mean?
The page publishes 3°C/min but does not define all measurement conditions. Confirm whether it is average or linear, the measured temperature interval, supply conditions and specimen load.
Can energized samples be tested?
Yes when heat dissipation, wiring, feedthrough rating, airflow and safety are reviewed. Active samples can materially change chamber performance.
What information is needed for a quotation?
Provide the required standard, temperature profile, specimen dimensions and mass, heat load, low-temperature option, ports, voltage, data requirements and installation environment.
Confirm the 50 L Chamber Against Your Test Profile
Send DERUI the specimen drawing, temperature profile, active heat load, applicable standard and required interfaces. We will verify capacity, low-temperature option, transition performance and utility requirements.
