Air Conditioning Unit chambers

Air Conditioning Unit Chambers

Thanks to ACS Air Conditioning Unit Chamber, it is possible to simulate the desired temperature and humidity inside the chamber and push the moisture into an external testing unit.
The chamber can operate in either stand-alone mode, in which the chamber functions autonomously with its temperature and humidity control, or in remote unit mode, where the chamber acts as an air conditioning generator.

Air Conditioning Unit Product Range

The chamber models indicated in the table below can be provided in Air Conditioning Unit configuration:

BASIC VERSION	E VERSION	ES VERSION	flower® VERSION	ESS VERSION
CLIMATIC AND THERMOSTATIC MODEL	CLIMATIC MODEL	CLIMATIC AND THERMOSTATIC MODEL	CLIMATIC MODEL	CLIMATIC AND THERMOSTATIC MODEL
Field T -40/+180°C	Field T -20/+180°C	Field T -40/+180°C	Field T -40/+180°C	Field T -70/+180°C
DM340 (T) DM600 (T) DM1200 (T) DM1600 (T)	DM340 E DM600 E DM1200 E DM1600 E	DM340 (T) ES DM600 (T) ES DM1200 (T) ES	FM340 FM600 FM1200	DM 250 C (T) ESS DM 500 C (T) ESS DM 1000 C (T) ESS DM 1400 C (T) ESS
Field T -70/+180°C		Field T -70/+180°C	Field T -70/+180°C
DM340 C (T) DM600 C (T) DM1200 C (T) DM1600 C (T)		DM340 C (T) ES DM600 C (T) ES DM1200 C (T) ES	FM340 C FM600 C FM1200 C

Air Conditioning Unit Datasheet

Please refer to each specific datasheet by clicking on the interested model and adjusting the performance according to the Air Conditioning Unit datasheet chart.

DM	DM E	DM ES	DM ESS	FM

Air Conditioning Unit Datasheet Chart

General features		single stage models	double stage models (C)
Increase of external dimension (H) respect to the standard	mm	550 mm	550 mm
Flow rate external fan	m3/h	600 m3/h	600 m3/h
Pipes length	m	2 x 4 m	2 x 4 m
Min temperature in the chamber (2)	°C	-35 (-15⁴) °C	-70° C
Max temperature in the chamber (2)	°C	180° C	180° C
Decrease rate of change performance (2)	%	10 %	10 %
Humidity range (2) (5)	°C	+10 ÷ +90° C	+10 ÷ +90° C
Humidity range (2) (5)	%	10 ÷ 95 %	10 ÷ 95 %
Dew point range (2) (5)	°C	+4 ÷ +90° C	+4 ÷ +90° C
Min temperature (1) (3)	°C	-30 (-10⁴) °C	-50 °C
Max temperature (1) (3)	°C	+150 °C	+150 °C
Humidity range (1) (3) (5)	°C	+20 ÷ +80° C	+20 ÷ +80° C
Humidity range (1) (3) (5)	%	20 ÷ 80 %	20 ÷ 80 %
Dew point range (1) (3) (5)	°C	+5 ÷ +75° C	+5 ÷ +75° C

(1) Measured values at the end of the pipes with the by-pass configuration
(2) Measured values with covers configuration
(3) Measured value with external pipes configuration
(4) Min temperature for E models
(5) Only for climatic chambers

GENERAL FEATURES

Control and management system and interfaces
Controlled by PLC and Advanced HMI.

Remote access
There is a wide range of possibilities thanks to the built-in MyKratos™ and MyAngel24™; multichamber control also available upon request.

Electromagnetic closing system
Ensures the security of environmental tests.

Air treatment system
Ensures a precise control of the climatic parameters inside the chamber with minimal thermal inertia; an axial fan allows rapid temperature variations of both air and specimen.

Humidification system (only climatic version)
The humidifier with a self-contained heater and dedicated controlling S/W offers two great advantages:
- it does not require distilled or demineralised water to operate properly
- it uses ‘dry’ vapour in order to avoid condensation on the specimens and to reproduce real environmental conditions

Air circulation system:
This system is equipped with an air circulation fan that draws air from the chamber environment and sends it to the external unit.

Flexible hoses:
The flexibility of these hoses allows the customer to position the external unit according to his needs; their insulation guarantees optimal performance.

Service panel:
The system is equipped with a PT100 temperature probe that can be moved to any area of the external unit, and an electronic chamber alarm thermostat.

Dual functioning mode: Configuration A - stand-alone mode

Dual functioning mode: Configuration B - Bypass mode

Complete basic configuration

MyKratos™ and MyAngel24™: top of the line HMI for remote control
Inspection window: multiple-crystal, with double heated transparent film, 550 h X 450 mm size
Internal lighting
Self feeding system (tap water through chamber embedded softener)
Wheels and feet
Electromagnetic closing system
Silicone portholes: 80 mm (left side) and 150 mm diameter (right side) fitted with silicone cap. They allow internal-external electrical, mechanical or hydraulic connections.
Digital min./max. thermostat: with independent probe
No. 1 internal grid shelf
Auxiliary contacts (specimens, alarms)

options

Additional portholes: 80 and 150 mm
Water condenser: for the chambers which are normally equipped with air condenser.
UV lamp: for ageing tests on painted surfaces, plastic materials, rubber, etc.
Handling port hole: Ø125 mm, positioned on the door near the inspection window. It allows handling specimens inside the chamber (available for models from 500 litres up).
Internal shelves: AISI 304 stainless steel, adjustable in height, grid shelves to be added to the one supplied.
Reinforced floor: max 500 kg distributed load
Notch 50x70mm
Set of no. 4 analogic inputs 0÷10 V for user’s data acquisition (no. 1 set max)
Set of no. 4 PT100 inputs (no. 1 set max)
Set of no. 4 PT100
Set of no. 8 auxiliary contacts (no. 1 set max)
No break power unit for PLC
Compressed air dehumidification kit
Capacitive probe: RH Controlling and monitoring (activated by control system)
Temperature and Humidity (for climatic chambers) analogic retransmission
Temperature extension to +200° C
Air fan motor speed adjustment
Specimen switching off in case of chamber alarm
Air flow booster
Tablet Samsung or compatible
Capacitive Probe: Capacitive probe for monitoring and control relative humidity inside the external box
MyKratos™ Multichamber: software, installed on a PC, for monitoring and control multiple chambers (to be supplied upon request)

chamber floor loading and specification details

Max. floor load 100 kg/m² approx. (equally distributed)
Max. load of the shelf 50 kg approx. (equally distributed)
Internal test space is made of stainless steel (material 1.4301, equivalent of AISI 304)
All seams are TIG welded and vapour tight

air treatment system

System includes the following components:

Cooling evaporator
Heating system
Dehumidification system (only climatic version)
Thermoregulation air circulation fan
Temperature and humidity probe

cooling

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 including an automatic injection-type protection system. This protects the compressors when they are cooling down from high temperatures.

heating

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 models)

Direct humidification occurs through an electrical vapour humidifier.
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 three ways to ensure the water supply needed for any kind of climatic tests:

Connecting the chamber to normal tap water network by means of suitable water connection
Manually refilling the tank with demineralised water
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 DYAGRAM

Temperature Measurement with Pt100 thermal probe Class A, max precision 0,3K.
Relative humidity measurement with Assmann psychrometric system complete with Pt100 thermal probes.
Relative Humidity range from 10% to 95% within the temperature range [+10°C; +90°C].

AREA 2, Range in Stand-Alone configuration (with covers), DEW POINT ⁽⁵⁾+4 ÷ +90°C
AREA 3, Range in Air Conditioning Unit configuration (with pipes), DEW POINT^{(1) (5)}+5 ÷ +75°C

The values refer to the basic version at ambient temperature of +22°C, with temperature and humidity measurement made in the air inlet.

(1) Measured values at the end of the pipes with the by-pass configuration

(5) Only for climatic chambers

CONTROL SYSTEM AND USER INTERFACE

The chamber is equipped with a PLC (Programmable Logic Controller) for managing all the chamber’s functions and safety interlocks. The HMI system consists of an on-board panel (Keykratos Evo) and a remote control (MyKratos™ including MyAngel24™) connected to the chamber.

On-Board Panel (Keykratos Evo) consists of 3.5 inch Analog Touch Panel 65,536 colours with a touch menu with related pop up screens, allowing the following activities: main chamber's parameter setup, manual control, possbility to start the last stored profile, visualization of eventual alarm notifications.