We often get enquiries from potential customers who know they need a test chamber but don’t know where to start when choosing what type of chamber they want. As the sole distributor for Vötsch products in Ireland, in this article we show you the main considerations for choosing a chamber to match your needs and where they lead you to in the Vötsch range.
Their range is vast so we have narrowed it down by excluding parts of the range and have concentrated on the most popular products in the Vötsch test chamber range. Amongst the parts excluded are ovens that have no cooling, vacuum ovens, thermal shock chambers, corrosion, emission, light testing, splash, stability, extra-large, PV testing and vibration chambers.
CHAMBER TYPE NOMENCLATURE
Firstly, let us explain the chamber type nomenclature:
T: Temperature only,
C: Climate i.e. with humidity control.
S or L (if present): Special i.e. non-standard or Laboratory size.
0, 4 or 7: 0; can reach 0°C and is suitable for constant temperatures, 4; can reach -40°C, 7; can reach -70°C.
XXX: these 3 numbers tell us the internal volume e.g. 004 = 40 litres, 150 = 1500 litres.
-X: this may be present if it is a special chamber and denotes the ramp rate this chamber can achieve when empty e.g. -5= 5°C/min.
An example would be VCS³7048-15. This special Vötsch chamber controls humidity as well as temperature. It can go to -70°C, has a 480 litre test space and can ramp up and down at 15°C/min when empty. The ³ detail tells us it is the third generation design of chamber i.e. Simpac control.
KEY CONSIDERATIONS FOR CHOOSING A TEST CHAMBER
And so to the basic questions which would mostly apply to all manufacturers:
- Is humidity control required? VT or VC
- What low temperature is required? ≤ 0, ≤-40 or ≤-70°C?
- What is the highest temperature required?
- What test space dimensions/volume are required?
- Is a special ramp rate required? If so, with what maximum thermal mass and what dissipated heat, if any?
- What ramp rates will be required with this maximum thermal mass?
- Do the ramps need to be linear?
- Will the test samples emit any corrosive or combustible gases/liquids? Do the test samples have explosive potential? (ATEX considerations)
- Will any option be required e.g. extra shelves, wheels, door with window, extra ports, low dew points.
For safety reasons, if combustion or explosion is possible a detailed checklist is filled out and submitted to Vötsch for a detailed quote.
Usually DACTEC can issue a technical and costed quote within 24 hours after we have lead the customer through the above considerations and have ensured that the chamber(s) offered will perform the tests required.
Contact DACTEC for assistance in choosing your test chamber