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BHD Series -

BHD-205 - Temperature and Humidity

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 20% and 95%. To extend your humidity range, see the optional features section.  

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 -37°C to +180°C (-35°F to +356°F)
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  • Specifications
  • Standard Features
  • Instrumentation
  • Safety Features
  • Optional Features
  • Downloads
  • Videos

Specifications

Interior: 20W x 22D x 20H (in)
  51W x 56D x 51H (mm)
Exterior: 50"W x 38"D x 31"H (in)
  1270W x 965.2D x 787.4H (cm)
Volume: 5.092 cubic ft
  144.19 liters
Temperature: -65°C to 180°C (-85°F to 356°F)
Humidity: 10-95%, limited by 4°C Td (98% add option)
Humidity Fluctuation: +/-2% RH
Rise Rate*: 3.88
Pull Down Rate*: 1.26
Electrical Supply:  208VAC or 230VAC, 1PH, 50HZ or 60HZ,
Full Load Amps: 28A
Power Requirement: NEMA L6-30
Mobility: Will fit through 48" door

*Rise and pull-down rates calculated using IEC 60068-3-5 standard. Custom options available.

Specifications

  • Interior Cabinet: Stainless Steel, Type 304
  • Exterior Cabinet: Cold Rolled Steel, Heavy-Gauge, Powder Coat finish, Color: Bone
  • Port Configuation: Right Wall Access Port and Plug with 3 in. (76.2mm) Diameter
  • 8 x 8 in. Multipane Viewing Window
  • Heated Window (Standard on -65°C Models Only)
  • Internal Light with External Switch

Instrumentation

STANDARD INSTRUMENTATION

CONTROLLER

BHD Series Test Chambers have upgraded to include AESONE CONNECT creating a robust connected device for a standard and uniform interface making test chamber operation easier.

AESONE XCHANGE increases your functionalityaesone-connect-1

  • connects the test chamber controller to your network for increased accessibility
  • on-board multi-year data logging

AESONE SOFTWARE gives you the power to

  • remote chamber operation and monitoring, 
  • web-based test profile creation, 
  • viewing current data and historical data visually
  • secure multi-level user access 

ADDITIONAL ONBOARD INSTRUMENTATION

WATLOW F4T PROGRAMMABLE CONTROLLER. Features a 4.3” capacitive touchscreen minimizing the chance for error. Ethernet communication supported by AESONE HARDWARE. View more controller options

SENSORS.

for temperature, 100 OHM platinum RTD is highly-accurate sensor made from platinum components for increased sensitivity
for humidity, solid-state sensor for 10-95% relative humidity

OPTIONAL DATA LOGGERS. View additional data loggers

Safety Features

  • Adjustable Digital Set Limit Controller - Indicating High-Temperature Safety
  • 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 (placement, size, number)
  • Custom Porting Sizes
  • Custom window size
  • LN2 Boost Cool
  • CO2 Boost Cool
  • Water Cooled Condenser
  • 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 
  • Dry Nitrogen Purge to keep condensation and frost from accumulating on DUT surfaces at cold temperatures and to prevent oxidation of metals surfaces at high temperatures
  • Floor Stand with Casters
  • Stackable Test Chamber Stand with Casters

Downloads

Videos