Temperature Chambers, Humidity
Burn-in Chambers, and Stress Screening Chambers
Environmental Test Chambers
In a class by themselves,
TetraTek environmental test chambers use laboratory proven subsystems to produce
consistent test results.
Each component is carefully balanced with all others to form a perfectly working
whole. Extensive calculation, detailed engineering analysis, precision
assembly, and thorough testing are TetraTek hallmarks.
TetraTek chambers include high volume air circulation systems to maintain
inside air temperature uniformity, assure test to test repeatability, and maximize testing effects.
These chambers are available with large cooling
systems to allow rapid temperature cycling or to handle huge product
live loads. All can be mechanically or liquid nitrogen cooled. They can even be
furnished with a central chiller cooling system for multiple chamber
installations. Instrumentation options include state of the art digital
process controls, touch screen HMI's (human machine interfaces) and digital
recorders and data loggers.
Temperature Ranges Available are:
Maximum available: -185 to +538 C (-300 to +1000 F)
Range 1: -30 to +60 C (-22 F to +140 F)
Range 2: -37 to +93 C (-35 to + 200 F)
Range 3: -37 to +177 C (-35 to +350 F)
Range 4: -73 to +177 C (-100 to +350 F)
Humidity Ranges Available are:
No humidity capability, temperature only.
20 to 95% RH, limited to 5 C dew point
10 to 95% RH, limited to 0 C dew point (recirculating
5 to 95% RH limited to -5 C dew point
(compressed air desiccant drier).
to 95% RH limited by a -50 C dewpoint
(compressed air desiccant drier).
Available accessories include built in; test fixturing, product supports, relay
rack rails, shelves, card cages, product wiring, product piping, and custom product
connectors. Test simulation load boards and external exercising
electronics can be directly wired to internal supports or card cages.
Please request a free analysis of your needs.
You may also wish to
Request for TetraTek Application Assistance
information on our test fixturing and product testing capabilities is contained
Ideal for electronic testing
Model BR40, Dual-Door Thermal Stress Screening Chamber,
features a full forty cubic feet (40" wide by
40" high by 43-1/2" deep) of workspace and BOTH FRONT AND BACK Chamber
access doors, 19-inch relay rack style mounting of test instrumentation, and
inside chamber rail mounting of your device test fixtures. You have
everything you need to successfully test your products, all in half the space
needed by conventional designs.
Conditioning equipment includes:
Vertical air flow for electronic
component, circuit board, and assembly testing.
Cooling by either a single stage or cascade,
non-ozone depleting, water cooled refrigeration system.
Heating by fast response nichrome electric
elements controlled by zero-cross-over solid state relays.
Fully proportional modulation of cooling (no
solenoids) for precise control of system conditions.
Optional humidification using a special
thermally clamped, fast response, TetraTek vapor generator.
dew point dehumidification using a
heatless, regenerative, compressed air desiccant drier.
Advanced Features of the Model BR40:
Access doors with top and bottom recessed
locking cam-action locks and
19-inch EIA style drilled and tapped rails on
the front and back for mounting of test electronics.
Optional power supplies, instruments, and
distribution panels to power, stimulate, and monitor your devices under
Optional access sleeves for convenient
connection to your test items.
Chamber workspace with both top and bottom
air distribution baffles to assure even air flow distribution around your test
Front and rear, plug type, access doors with
heavy duty hardware and latches for a tight seal.
Dual counter-rotating blowers to assure a
uniform environment and even heat transfer around your test items.
System conditioning apparatus.
Control panel with touch-screen, 256-color,
human machine interface.
Temperature range: Single stage system: -20 C to 150
Optional Temperature range: Cascade cooling system: -65 C to 150 C
Optional humidity range: 15 to 95% limited by a 0 C
relative humidity (RH) measuring sensor standard.
Desiccant drier dehumidification standard.
Standard heating rate:
-20 C to 150 C in 30 minutes empty.
Standard cooling rate single stage:
150 C to 0 C in 30 minutes empty.
Standard cooling rate cascade cooling:
150 C to -55 C in 60 minutes empty.
Quality Features Include:
Programmable Logic Control (PLC) process
RS-485 communications interface.
A 10-inch color touch screen Human
Machine Interface (HMI).
A non-ozone polluting, water cooled,
Silfoss and silver soldered copper
Hinged access panels and heavy duty
Programmable control of chamber
Digital display of system conditions and
Oil-tight illuminated master switch and
A 300 series stainless steel continuous
heliarc welded interior.
A heavy gauge cold rolled steel outer
case and frame.
Refrigeration gauges, pressure switches
and safety sensors.
An average of 6-inches of vapor sealed
Two full opening, in-fitting chamber
A separate high temperature safety
Stainless steel door drip pans.
Normal required utilities are tower water at a
maximum temperature of 85 F and a minimum pressure of 20 psig, three phase
power, deionized water when optional humidity is selected, and drain. All
utilities except for electrical power are terminated on a convenient anodized
aluminum panel on the rear of the system.
Optional Humidity Systems
A TetraTek stainless steel electric
heated vapor generator.
A dual tower, heatless, compressed air
A wide range precision direct relative
Discrete system process controls to suit
A digital one or two pen strip
A 24-hour or 7-day circular chart
Burn-in rated power supplies,
distribution panels, and bus bars.
Environmentally rated shelves, card
cages, and supports.
Access ports, connectors, and feed-throughs.
Interior windows and lights.
Product load and test stimulation
Data acquisition and product monitoring