2945 Washington Ave. St. Louis, MO 63103
877-783-6774 | sales@darwinchambers.com
www.darwinchambers.com
ST SERIES: STABILITY
REFRIGERATOR CHAMEBRS
ST Series Overview
Our ST series stability refrigerators provide the highest level
of performance and construction with tight uniformity and
control of temperature. They are a common product among
laboratory researchers looking for exceptional precision and
virtually unlimited customization options available.
ST030
The ST030 is a single-door stability refrigerator.
ST055
The ST055 is a 2-door stability refrigerator.
ST084
The ST084 is a 3-door stability refrigerator.
Featured photo is the ST055
2-door stability refrigerator
chamber, open door view.
Size Variations
The Darwin Chambers ST Series offers 3 different sizes
including single-door, 2-door and 3-door options.
2945 Washington Ave. St. Louis, MO 63103
877-783-6774 | sales@darwinchambers.com
www.darwinchambers.com
ST SERIES: STABILITY
REFRIGERATOR CHAMEBRS
Our ST series come standard with the following: temperature
range of 1° C to 15° C. Control of temperature at sensor of ±0.2°
C. Uniformity inside chamber of ±1.0° C. Standard Microprocessor
Controller with PID, autotuning, programmable alarms, ability
to ramp/soak, process variable and setpoint variable offset, dual
display of actual temperature and setpoint temperature (process
variable and setpoint variable). Controls are able to be quickly
exchanged for future upgrades or repair. As always, if you have
different specifications, probes, microprocessors etc., we can
probably do it.
Reliable Cooling Redundancy
Superior Control and Uniformity
The ST series chambers control well within the specifications
required by the FDA and ICH for GMP studies. The ultrasonic
humidification system provides excellent humidity control and
avoids hot spots seen during chamber mapping of steam boiler
equipped chambers. Thermoelectric cooling and automatic
switching system from cooling to heating control provide consistent
results throughout the available temperature range. Standard
control at the sensor in these chambers is ±0.2°C and ±0.3%RH.
Greatly Reduced Direct and Indirect Energy Loads
Each ST series chamber includes multiple, independent
thermoelectric cooling units. The 7 year warranty on cooling
components and the ability of our chambers to maintain
temperature, even if the chamber suffers multiple failures, is
unmatched by any other refrigeration-based chamber.
The ST Series chambers utilize less energy than comparable stability
chambers and introduce less impact upon building cooling systems.
This efficiency “dual benefit” allows our chambers to be located
in spaces unsuitable for other chambers. Electrical energy savings
by the ST Series vs. steam boiler equipped chambers can easily
amount to hundreds or even thousands of dollars saved per year.
Quiet Operation
Widely Proven, Non-Proprietary Controllers
The ST series chambers utilize quiet, highly efficient DC fans.
Locating these chambers in lab workspaces is a viable option.
Simple Serviceability
Due to the omission of all refrigeration equipment on these models,
refrigeration technicians are not required during chamber servicing.
Refrigerated stability chambers are not only costly to service, but
can require days to service properly. Nearly every component of
thermoelectric-based chambers can be serviced within minutes
with basic tools. For instance, the ultrasonic humidifier is capable of
being removed and reinstalled in less than a minute and operates
on non-hazardous 24 volts.
Standard controllers for the ST Series are manufactured by Fuji
Electric and are ideal for stability testing chambers. Unlike many
proprietary controllers, this controller is commercially available and
proven in tens of thousands of installations. Standard functions
include: autotuning, fuzzy logic, PID control, programmable alarms,
calibration capability, offset capability, etc. A touchscreen control
interface is optional. Other controller manufacturers are also
supported (Watlow, Allen-Bradley etc.)
Services and Warranties
We offer 24 hour technical support throughout the lifetime of your
chamber. In addition to standard warranties, we also offer extended
warranties for cooling components, parts and labor. We also provide
qualifications, validations and preventive maintenance services at an
additional cost. Please ask for a quote.
2945 Washington Ave. St. Louis, MO 63103
877-783-6774 | sales@darwinchambers.com
www.darwinchambers.com
ST055 Stability Refrigerator Chamber Specifications (ambient 21° C)
Performance
Temperature Range
Ambient Temperature
Temperature Control
Temperature Uniformity
Control Resolution
Temperature Sensor
Humidity Range
Humidity Control
Humidity Uniformity
Control Resolution
Humidity Sensor
Control System
Controller
Control Readout
Calibration Corrrection Capability
Uniformity Off Set
Alarm
Alarm Type
Remote Monitoring
Password Protection
Audit Trail
Universal Power Supply for Monitoring
Construction
Exterior
Interior
Shelving
Casters
Capacity & Dimensions
Interior Capacity
External Dimensions
Internal Dimensions
Shelf Dimensions
Crated Weight
Electrical
Voltage
RLA
Cord Length
Standard
Customized Option
1º C to 15º C
21º C ± 3º C
20º C to 70º C
Available
± 0.2º C
Available
± 0.7º C
Available
0.1º C
Available
NIST Traceable PT 100 RTD Class A
Available
Ambient to 90% @ 40º C Dewpoint
± 0.3% RH
2.0%
2% to 95% @ Dewpoint Range of -15º C to 40º C
Available
Available
0.10%
Available
NIST Traceable Platinum RTD
Other or Custom
Standard
Customized Option
Microprocessor based PID
Actual and Set-Point Values
West EC-44, Future Design Touchpad + More
Trending, Duty Cycle
Actual and Set-Point Values
Available
Standard 0.1 Resolution
Available
Audible and Visual
Text, Email, Web Server, Remote Access
Deviation in 0.1º C or 0.1% RH with Delay
Absolute 0.1 Resolution with Delay
Available
Numeric
Dry Alarm Contact, RS 485 & Analog Output
Numeric, Alpha Numeric
Available
N/A
N/A
Available
Standard
Customized Option
Aluminum Side Walls & Back, Stainless Steel Floor & Ceiling
6 Gray PVC Coated, Adjustable 1” Increments
Stainless Steel Side Walls, Back, Floor, Door Liner & Ceiling
Stainless Steel, Chrome Plate or Custom
2.75”
5” Casters or Seismic Legs
US Standard
Metric
46.6 ft 3
52.88” W x 35.81” D x 80.5” H
1320 liters
134.3 cm W x 90.95 cm D x 204.47 cm H
47.5” W x 29” D x 58.5” H
120.65 cm W x 73.66 cm D x 148.59 cm H
22.5” W x 26.25” D
54.61 cm W x 66.68 cm D
780 lbs
370 kg
US Standard
International
115v / 60HZ
7.0
230/50/1
3.6 With Step Down Transformer
7 ft
9 ft
Stainless Steel Door & Front, Aluminum Sides
Stainless Steel Door, Front & Sides
2945 Washington Ave. St. Louis, MO 63103
877-783-6774 | sales@darwinchambers.com
www.darwinchambers.com
ST055 Stability Refrigerator Chamber Technical Drawings
134.3 cm
52.88"
12.7 cm
5'
36.51 cm
14.38"
217.17 cm
85.5"
90.95 cm
35.81"
85.9 cm
33.5"
78.74cm
31"
204.47 cm
80.5"
197.48 cm
77.75"
152.24 cm
59.94"
Front View
6.99cm
2.75"
134.3 cm
52.88"
Side View
145.49 cm
57.28"
58.5 cm
23.03"
Top View
Isometric View