BHD-205
BenchtopRack and Stack
The BHD-205 is a benchtop-style environmental test chamber for temperature and humidity testing. The chamber is designed to fit on your lab table and still have easy and safe access when you reach-in the workspace.
If you are concerned about losing your lab counter space, this test chamber has an optional floor stand for one chamber or get double the test workspace when you stack two BHD Test Chambers in the same footprint.
STRUCTURE. The internal workspace is lined with type 304 stainless steel for a vapor-tight internal construction. The exterior has a durable powder-coat finish over heavy-gauge steel for a long-lasting clean look. Between the two layers is highly-efficient, low k-factor, thermal insulation. This chamber is built to last for many years.
CIRCULATION SYSTEM. Air circulation is crucial for environmental testing. The BHD-205 Test Chamber has a proprietary baffle and fan design combination. This optimizes temperature and humidity conditions within the workspace.
HEATING SYSTEM. BHD test chambers feature heating systems equipped with open ceramic-core nichrome heaters for reliable and accurate temperature control within ±0.5°C.
HUMIDITY SYSTEM. The humidity system has a standard range between 10% and 95%. To extend your humidity range, see the optional features section. View RH Chart.
COOLING SYSTEM. The cooling system in the BHD-205 consists of a self-contained mechanical refrigeration system with a cascade configuration, and an air-cooling condenser. An optional water cooling-condenser is available.
Add boost cooling with liquid LN2 or CO2 for even faster pull-down rates. It's a great option for stress tests that require rapid cooling. Even without boost cooling, AES standard cascade refrigeration systems have the fastest standard change rates of any environmental test chamber manufacturer. See Basic Specifications tab below.
INSTRUMENTATION. BHD-205 Test Chamber incorporates AESONE CONNECT creating a robust connected device giving you a standard and uniform interface that makes operation easier. Learn more in the Instrumentation Tab below.
ALTERNATIVE TEMPERATURE RANGES:
- BHD-505 -40°C to +180°C (-40°F to +356°F)
- Specifications
- Standard Features
- Instrumentation
- Safety Features
- Optional Features
- Applications
- Downloads
- Videos
- Dew Point Calculator
Specifications
| Interior: | 20W x 22D x 20H (in) |
| 508W x 558.8D x 508H (mm) | |
| Exterior: | 50.2W x 38D x 31.2H (in) |
| 1275.1W x 965.2D x 792.5H (mm) | |
| Volume: | 5.09 cubic ft |
| 144.13 liters | |
| Temperature: | -70°C to 180°C (-94°F to 356°F) |
| Temperature Stability: | ±0.5°C (±1.0°F) at sensor after stabilization |
| Humidity: | 10-95% RH, limited by +4°C Td (for 98% add option) |
| Humidity Fluctuation: | ±2% RH at sensor |
| Rise Rate*: | 6°C/min |
| Pull Down Rate*: | 3°C/min |
| Electrical Supply: |
208 VAC, 1 PH, 50HZ or 60HZ
(Optional) 220-240VAC |
| Facility Power Receptacle: |
6' NEMA L6-30
|
| Full Load Amps: | 28 A |
| Compressed Air Requirements: | 30PSI |
| Airflow: | 275 CFM |
| Thermal Heat Rejection (ThoR): | -MAX: 18,000 BTU/HR -MIN: 5,000 BTU/HR |
| Nationally Recognized Test Lab: | UL 61010-1 |
| Refrigeration System: | Cascade |
| Refrigerant: |
High Stage: R-404a Low Stage: R-508b (Optional) R-449a |
| Mobility: | Will fit through 48 in doorway |
| Approximate Product Weight: | 640 lbs (290 kg) without added options |
| Approximate Shipping Weight: | 750.0 lbs (340 kg) without added options |
*Rise and pull-down rates calculated using IEC 60068-3-5 standard. Custom options available.
*Ideal ambient temperature conditions for test chambers is 23°C (73.4°F). The temperature and humidity range of assured performance is between 15°C and 25°C (59°F/77°F) and 30-50% relative humidity. Conditions outside this range may affect the performance of your test chamber and reduce the lifespan of the equipment.
BHD Series
Standard Features
STANDARD FEATURES
- Exterior structure is heavy-gauge, cold-rolled steel with powder coat bone color and matte finish
- Interior cabinet: stainless steel, type 304
- Interior light with exterior switch on cabinet face and operable on AESONE CONNECT
- Port configuration: right wall access port and plug with 3in (76.2mm) diameter
- Fully adjustable shelf, 1 wire-grid shelf, stainless steel
- Forced air circulation
- Gas inlet compatible with GN2 purge and dry air purge
- Multipane 12 in x 12 in heated viewing window
- Full opening door with adjustable manual latch
Instrumentation
INSTRUMENTATION
AESONE CONNECT®
IncludedMost remote monitoring platforms are sold separately. AESONE CONNECT® comes built into every BHD Series chamber, giving your team full visibility and control from the moment your chamber is online.
Remote monitoring
Live data graphs from any browser
Remote operation
Start, stop, and adjust on the fly
Multi-year data logging
On-board logging with export
Profile management
Web-based creation and scheduling
Secure access
Multi-level permissions for your team
API integration
JSON API for custom workflows
ADDITIONAL ONBOARD INSTRUMENTATION
CONTROLLER:
WATLOW F4T PROGRAMMABLE CONTROLLER. Features a 4.3" capacitive touchscreen, minimizing the chance for error. Ethernet communication supported by AESONE CONNECT®. View controller options
SENSORS:
- RTD — 100 OHM PLATINUM: Measured at the point of airflow entering the workspace. Class A, 3-wire platinum resistance sensor. Standard on all chambers.
- VAISALA HMM100 RELATIVE HUMIDITY SENSOR: Measured at the point of airflow entering the workspace. Airflow speed does not affect measurement. Highly accurate between 10–95% RH over the entire operating range of −70°C to +180°C (−94°F to +356°F). Standard on all humidity chambers.
- TYPE T THERMOCOUPLE: Connects to the limit controller for safety monitoring. (Additional Purchase)
- HIGH HUMIDITY HEATED SENSOR: Replaces the standard RH sensor and enables testing up to 98% RH. The heated probe prevents condensation and maintains accuracy across high humidity, vacuum, and pressurized environments. (Upgrade Available)
- View all sensor options
OPTIONAL DATA LOGGERS: View data logger options
Safety Features
STANDARD SAFETY FEATURES
- HIGH/LOW TEMPERATURE CONTROL. An adjustable temperature limit controller allows you to program the highest and lowest temperature of the device under test, protecting products from compromising temperature exposure.
- Over temperature heat fusing
- Refrigeration system over-pressure safety circuit
- Low-water steam generator over-temperature circuit
- TUV Rheinland certified meeting UL 61010-1, US, C, E
Optional Features
- Shelf Modification
- Custom Porting Sizes
- Custom window size
- LN2 Boost Cool
- CO2 Boost Cool
- Self Contained Water Recirculating System
- Water Demineralizer Cartridge System
- High Humidity Sensor to extend the humidity range up to 98% RH
- Desiccant Air Dryer to reach conditions as low as 5% RH
- Floor Stand with Casters
- Stackable Test Chamber Stand with Casters
Applications
APPLICATIONS
The BHD Series is AES's line of compact, benchtop temperature and humidity test chambers a versatile chamber used across a wide range of industries for product, component, and materials validation under combined thermal and humidity conditions. With 10–95% RH range and precise ±2% RH stability paired with uniform temperature control, the BHD Series gives engineers a reliable way to simulate real-world climates in a compact footprint that fits almost any lab. From stability testing and regulatory qualification to humidity cycling and everyday environmental validation, the BHD Series adapts to the unique demands of each industry it serves.
HIGHLIGHTED INDUSTRIES
Learn more about the industries we serve here.
- Consumer Electronics
- Medical Devices
- Pharmaceuticals
- Semiconductor
- Packaging
- Consumer Products
- Paints & Coating
- Automotive
- Aerospace & Aviation
- Military & Defense
Downloads
Videos
Dew Point Calculator
Please Try Again.