Temperature and humidity test chambers

Weiss Gallenkamp have launched the brand new WT3 Temperature Test Chamber & the WK3 Climatic Test Chamber.

The operating philosophy of the new chamber is to enable users to access operating and control functions as well as to provide manual access to processes quickly and conveniently all over the world. The standard chamber is equipped with the large 12" TFT touch screen monitor for convenient and easy operation. Furthermore, the chambers are equipped with an illuminated CONTROLPAD* that permanently displays the current operating state and the operating parameters. Users thus have a clear view of all important processes and can complete their work just using their fingertips.

These chambers follow on in the Weiss Gallenkamp tradition of producing world leading Environmental Test Chambers.

The combination of high quality components, design and manufacturing expertise enables us to offer outstanding control performance and reassurance of the integrity of results.

The technical features of the new WK/T3 generation have also been optimised, to give perfection in performance and equipment ...

Convenient electric door handle with radio remote control Optimised test space lighting with automatic timed switch-off Optimised guidance of the air and temperature distribution - better than ± 1.5 K Extreme heat during the summer is no problem - the systems are designed for that Standard humidity bath flushing to prevent contamination of humidification water Long-time testing 85 °C/85% r. h. possible Large water container easily accessible

Infotainment ... Virtually without any limits

Big 12" TFT-colour touch screen display
Lighted CONTROLPAD* for displaying the operating state and the actual values
Industrial PC with Windows XP Embedded
Integrated recording of measurement data
Data transfer via Ethernet or USB stick
Process visualization for circulating air and cooling circuit
Auto-adaptive control system with continuous self-optimisation
Networking with other test systems possible
Remote control and remote monitoring possible via intranet or internet
Integrated service information system

WT3/WK3: Principle and design The functional principle ...

An air stream that is temperature conditioned and/or air conditioned precisely to the entered set values continuously flows through the test space and ensures an optimum spatial distribution of air and temperature with best constancies in terms of temperature and humidity.

Generously dimensioned axial fans with an external drive motor draw the air out of the test chambers. This circulating air then flows through a fin-type heat exchanger in which it is cooled if required. An electrical heater installed behind the heat exchanger heats the circulating air. The stream of air then passes over a water bath; integrated heating elements ensure quick and precise heating of the water.

The humidity of the test space air is measured psychrometrically. Depending on the climate the humidity sensor thermometer is wetted automatically and cleaned in the process. This considerably increases the service life.

Design features ...

The test chambers are designed in a modular system and are ready to be plugged in so that assembly or commissioning on site can be dispensed with. The stainless steel test space is welded vapour-tight. Its environmentally friendly insulation guarantees the best possible insulation values and, hence, the lowest possible operating costs.

The test space door is equipped with a latch which automatically closes upon the approach of the door and which opens the door again at the touch of a button. It ensures an optimum closing pressure while ensuring protection against excess pressure at the same time.

WT3/WK3: Standard version and options Standard version

Safety cut-out against high and low temperatures
Auto-adaptive control system with continuous self-optimisation
4 potential-free outputs 4 inputs (24 V DC)
Serial interface RS 232 C, Ethernet and USB interface
Ports Ø 50 mm and 125 mm in the left and right side panel
Refrigeration unit, air-cooled
Insertion rack
Controlpad* for displaying the actual values, start/ stop, etc. in the front Electric door latch with radio remote-control
2 temperature values are calibrated (+23 °C and +80 °C)

Additional equipment for WK3 series

Psychrometric humidity measurement with self-cleaning sensor
Humidity calculator and integrated limit value monitoring system
Large water container, easily accessible
Humidity bath flushing for cleaning of the humidifier water
2 climate values are calibrated (23 °C/50% r.h. and 95 °C/50% r.h.)

Options

Large observation window with lighting
S!MPATI* software package for Windows XP
Printer with USB interface
Water-cooled version for cooling
Mobile Installation
Speed-controllable fan in order to vary the circulating air volume flow
Fresh air purge facility in order to keep the air in the test chamber clean
Ports Ø 50, 80 and 125 mm for connection of the test specimens
Temperature measurement on the test specimen
Other voltages and frequencies
Calibration in deviation to the standard
Independent capacitive humidity sensor
Door hinged on right side
Reinforced test chamber floor up to 150 kg
Floor for heavy loads up to 500 kg (only available as of 600 l)
Flat notches for the fixed placement of connected test specimens
Ports in the area of the roof

Additional options for WK3 series

Capacitive humidity measurement
Pressure-resistant demineralisation cartridge
Dewpoint extension in climate working range up to -12 °C with compressed air dryer
Dewpoint extension up to -12 °C controlled as well as up to -30 °C uncontrolled with compressed air dryer

WT3/WK3: Technical data Test space volume: 180, 340, 600, 1.000 und 1.500 Liter

Performance for temperature tests

Temperature range: -42 ... +180°C oder -72 (-75) ... +180°C
Heating up rate: 3,0 ... 4,0 K/min 1
Cooling down rate: 2,3 ... 4,0 K/min 1
Temperature changing rate linear: 1,0 K/min 1
Maximum heat compensation: 1.500 ... 4.200 W 2

Performance for climate tests

Temperature range: +10 ... +95°C
Dew point range: +4 ... +94°C (Extension as option)
Humidity range: 10 ... 98 % r.h.
Maximum heat compensation: 400 ... 500 W 2

WT3/WK3: Operation and documentation

Our test chambers are equipped with an integrated industrial computer system with a 12'' TFT-colour touch screen display to facilitate operation, monitoring and documentation. The Windows S!Mcontrol* software package provides maximum user comfort, transforming the test chamber into a communications wizard.

Auto-adaptive control system with continuous self-optimisation
Recording of test program and measurement data directly on the hard drive
The software is available in several languages
Data transfer via Ethernet or USB stick
Complete test information is at the user's fingertips
Easily understandable process visualisation system
The interaction between compressors, heating systems and valves is clearly illustrated
Programming of tests is realised with a graphic editor
CONTROLPAD* installed in the door provides information regarding actual values
Design Controlpad*: On and off of testing and of the test chamber lighting, alarm display, acoustic alarm
Colour touch screen display 800 x 600 pixels

Control is governed by the 32-bit I/O system S!MPAC* with integrated soft PLC. A web server can place test and diagnosis information on the internet via Ethernet if desired.

Further Features:

Online-Service-function (enabling our specialists from headquarters to establish an online data link to the unit on site via internet or mobile telephone and to support the service technician optimally on site)

If the unit is connected to the network, it can be reached and even controlled at almost any place in the world.

The units are compatible with the S!MPATI* software package and can be integrated into their networking environment. (data logging operation in S!MPATI*)

WTL & WKL Test Chambers PDF (154 KB)

Votsch VTL & VCL PDF (137 KB)

WK 111 Climate Test Chamber PDF (656 KB)

Votsch Constant Climates PDF (757 KB)

Votsch VT3 & VC3 PDF (543 KB)