Environmental Test Chamber

Compact Chamber

The useful  life of your product and its components could be affected by solicitations received during the packaging phase, transportation and depot operations in general which could determine a failure caused by arising defects not visible or predictable in the production phase. Moreover, the environment in which the products «operate» is affected by sudden temperature variations, which often generate quality problems.

ACS, thanks to its wide experience, has developed a huge range of products to test all type of specimen and to detect unpredictable future defects that may arise after years of operation.
ACS Compact chambers provide high performances in limited space. Small footprint, easy installation, low power consumption, low noise level and full basic features including the inspection windows, makes this chamber the ideal choice. A compact unit easy to be installed in any R&D Department capable of testing small components and products.

The product line has 4 different models, depending on the volume chosen, starting with 16 l model up to 200 l model, to fit each customer needs.

Product Range

 Range T -35/+130°C    Range T -40/+180°C   Range T -40/+180°C
DY16 T DY60 T DY110 (T)
DY200 (T)
  Range T -70/+180°C Range T -70/+180°C
  DY60 TC DY110 C (T)
DY200 C (T)

Please click on the following link to open the Compact Datasheet.

general features

  • Optimized devices (control system, refrigeration system, humidification system)
  • Compact enclosure: excellent protection against corrosion achieved by priming and powder coating (thermosetting powder polyester resin) Grey RAL 9006.
  • Insulation thickness: 125 mm for 110 l and 200 l; 100 mm for 60 l and 50 mm for 16 l (mineral wool)
  • Door system: Mechanical door closers

Complete basic configuration

  • Inspection window
  • Ecological refrigerant gas in line with EU Regulation 517/2014
  • Internal lighting
  • Mechanical door closers
  • Interfaces: Ethernet port for connection to the remote control system and RS232
  • Portholes: 80 mm on 60 l, 110 l and 200 l while 23 mm on 16 l (both on right side) fitted with cap. They allow internal-external electrical, mechanical or hydraulic connections
  • Digital min. /max. thermostat: with independent probe, completely settable curve (for 110 l and 200 l)
  • No. 1 internal shelf (16 l excluded)
  • Air condenser
  • Auxiliary contact
  • Swivel castors (for 200 l)



Request an Offer



  • Additional portholes: 23 mm (for 16 l) and 80 mm
  • Water condenser (for 110 l and 200 l)
  • Supporting table with wheels (for 110 l)
  • UV lamp: to be used for ageing tests on painted surfaces, plastic materials, rubber, etc. (for 110 l and 200 l)
  • Internal shelves: AISI 304 stainless steel, adjustable in height, grid shelves (16 l excluded)
  • Notch 50x70mm (for 110 l and 200 l)
  • Thermostat: max./min. digital thermostat with independent probe. (for 16 l and 60 l)
  • Set of no.4 analogic inputs 0÷10V for user’s data acquisition (no. 1 set max)
  • Set of no. 4 PT100 inputs (no. 1 set max)
  • Set of no. 4 PT100 (for 110 l and 200 l)
  • Set of 8 auxiliary contacts (no. 2 for 16 l and 60 l)
  • No break power unit for PLC
  • Temperature and Humidity (for climatic chambers) analogic retransmission (for 110 l and 200 l)
  • Specimen switching off in case of chamber alarm
  • WinKratos software: installed on local or remote PC (to be supplied upon request)
  • Multichamber remote control: multichamber WinKratos software installed on a PC (to be supplied upon request) and connection kit for controlling several chambers (up to 16) from the same PC station

chamber floor loading and specification details

  • Max. floor load 100 kg/m² approx (equally distributed)
  • Max. load of the shelf 15 kg approx. (equally distributed - only 60 l)
  • Max. load of the shelf 50 kg approx. (equally distributed - only 110 l, 200 l)
  • The internal test space is made of stainless steel (material no. 1.4301, equivalent of AISI 304)
  • All the seams are TIG welded and vapour tight
  • Internal rails for mounting the grid shelves by special clamps in the requested height
  • Internal lighting

air treatment system

Realized into an air treatment duct positioned on the end wall.
The following elements are included:

  • cooling evaporator
  • heating system
  • dehumidification system (only climatic version)
  • thermoregulation air circulation fan
  • temperature and humidity probes

Thermo-regulated air flows into the air treatment, passing through the above mentioned elements before entering the test chamber.


Mechanical cooling based on single stage system (-40° C) or cascade systems (–70° C).
The cooling system is realized with semi-hermetic alternative type compressors with an advanced and high quality design.
The main body is made of special cast iron; the cylinders and light metal alloy pistons are easy to dismount.
The cooling system is complete with an automatic injection type protection system for the compressor. This protects the compressors when they are cooling down from high temperatures.
This system allows a self-regulating cooling of the compressors, in order to avoid high temperature (no damages to motor winding).


The chamber is heated by means of electrical heaters, protected by safe thermostats that disconnect overall chamber main power components (such as compressors, fans and heaters) in case of accidental over-temperature.

humidification and dehumidification (climatic model)

Direct humidification occurs through an electrical vapour humidifier with an orifice arranged in the airflow after the recirculating air fan. This ensures aerosol free humidification.

The humidifier is controlled by a dedicated algorithm for better reliability.
The chamber is equipped with a water storage tank (about 18 l capacity) and a water connection on the back of the chamber for automatic refilling.
There are two ways to ensure the water supply needed for any kind of climatic tests:

  1.  Manually refilling the tank with demineralised water
  2.  Connecting the chamber to demineralised network

In order to reduce water consumption, water recycling can be activated through a button on the control panel (only possible when the specimen does not contaminate the water during the test). 
Dehumidification is performed by the condensation cooler (dew point cooler) directly connected to the refrigeration circuit. This principle permits high stability of parameters in conjunction with energy-efficient dehumidification.

humidity control

(only 110 l and 200 l climatic models)
Temperature Measurement with Pt100 thermal probe Class A, max precision 0,3 K.
Relative humidity measurement with capacitive probe.
The regulation of the humidity is performed by the PLC programmer. This allows extremely precise control of the programmed values.
Relative humidity range: 10% to 95%, within the temperature range [+10° C, +95° C]
Dew point range:

    AREA 1, +4° C to +93° C for continuous testing in the temperature range [+20° C,+95° C]
    AREA 2, +4° C to +93° C for a short time in the temperature range [+10° C; +20° C]
    AREA 3, down to -3° C for limited periods based on starting conditions and foreseen testing time

The values refer to the basic version at ambient temperature of +22° C, temperature measuring in the air inlet

control system and user interface

The Compact Test Chambers are equipped with the powerful KeyKratos Plus touchscreen control system, based on PID control through PLC.

hardware & software

5,7" touchscreen (on 60, 110 and 200 l), 3,5" touchscreen (on 16 l); 65.536 colors, TFT technology
3 types of memory support for storing cycles, recordings, and alarms: Compact Flash, Pendrive (USB key on 60, 110 and 200 l models)


  • Touch menu with related pop up screens where necessary
  • Memory capacity to 1000 cycles with 350 segments 
  • User friendly data input during editing, check and administration of cycle
  • Delayed start of the tests (hh:mm:ss)
  • Real time recording of temperature and humidity versus time (LOG on SD, no for 16 l)
  • USB interface on front panel for pendrive or printer (no for 16 – 60 l)
  • Data saved in CSV format (Comma Separated Value) for easy export to Excel® from Secure Digital to Pendrive via USB interface located on front panel, program files are easily convertible into graphic format (no for 16 – 60 l)
  • A trend chart for recorded variables available with a scale from -100/+200.
  • Four traces: temperature set point, actual temperature, humidity set point and actual humidity (the last two only for climatic version)
  • Messages on scheduled maintenance activities
  • Synoptic graphs for the chamber, low and high stage refrigeration.
  • System available in 6 languages: Italian, English, German, Spanish, French, Dutch

technical details

PC Winkratos software:

WINKRATOS® S/W package (running under Windows XP, Vista, 7) offers a powerful and flexible control and management system.
It allows the user to:

  • create test programs
  • refer to and modify previously created test programs
  • delete all test programs that are no longer necessary
  • print any test program in text format

Configure your test chamber

Type of chamber

General Purpose

Temp. Changing Rate
(K/ min) Heating/ Cooling

User guide

Next Step

Reset configurator

Subscribe to Newsletter

Let's subscribe to ACS newsletter to be up-to-date on the latest news, product launches and promotions.