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Product Name: Environmental Test Chamber
Product Description
n 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 (mechanical dehumidification).
10 to 95% RH, limited to 0
C dew point (recirculating desiccant drier).
5 to 95% RH limited to -5
C dew point (compressed air desiccant drier).
5 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.
Ideal for electronic
testing
Our TetraTek Model BR40,
Dual-Door Thermal Stress Screening Chamber, features a full forty cubic feet (40inch
wide by 40inch high by 43-1/2inch 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.
Optional low 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 test.
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 items.
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.
Operational Specifications:
Temperature range:
Single stage system: -20 C to 150 C
Optional Temperature
range: Cascade cooling system: -65 C to 150 C
Optional humidity range:
15 to 95% limited by a 0 C dew point
Direct 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 control.
RS-485 communications
interface.
A 10-inch color touch
screen Human Machine Interface (HMI).
A non-ozone polluting,
water cooled, refrigeration system.
Silfoss and silver
soldered copper refrigeration piping.
Hinged access panels and
heavy duty industrial hardware.
Programmable control of
chamber environmental profiles.
Digital display of system
conditions and control parameters.
Oil-tight illuminated
master switch and reset pushbutton.
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 fiberglass insulation.
Two full opening,
in-fitting chamber access doors.
A separate high
temperature safety control.
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 Feature:
A TetraTek stainless steel
electric heated vapor generator.
A dual tower, heatless,
compressed air desiccant drier.
A wide range precision
direct relative humidity sensor.
Available Options:
Discrete system process
controls to suit your preference.
A digital one or two pen
strip chart recorder.
A 24-hour or 7-day
circular chart recorder.
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 electronics.
Data acquisition and
product monitoring equipment.
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