Climatic Chamber with Vibration

CATH chamber can simulate pressure, temperature and humidity in its test space. It is also known as combined altitude, temperature and humidity chamber which is primarily used in R&D and testing of aerospace components. The chamber meets many international standards including MIL and RTCA. The standard range of the CATH chamber includes 540 L , 1000 L and 1500 L while we also offer custom sizes as per customer requirement.

The chamber can simulate altitude range from sea level to 1 mbar which is equivalent to 50km above sea level. The temperature range is from -70°C to 180°C and ramp rates starting from 3°C/min up to 25°C/min are available. The humidity range is 10% to 98% RH. Complex test standard such as CATH of MIL-STD-810G or RTCA DO-160 for airborne equipment are programmable using the envicom Graphite. The envicom Graphite is a colour touchscreen using Siemens SIMATIC controllers.

The chamber has mono block construction with epoxy based electrostatic powder coated surface. The test space is made of pre-polished stainless steel ensuring vapour tight enclosure with no conduction between test space & exterior. Inside the test space the specimen is conditioned with laminar air flow for uniform airflow across the work space & test specimen.

The desired level of lower humidity is achieved by using the refrigeration based de-humidification system. High Capacity ultra-low temperature compressor is used with water cooled condenser driven by a co-axial fan. All configuration and monitoring is done through a colour touch screen display controller.

Description	Specification
Workspace Dimensions - WxDxH
mm	1000	x	1500	x	1000
In	39	x	59	x	39
Volume
Ltr	1500
Cuft	53
Temperature Range
°C	-70		To		100
°F	-94		To		212
Ramp Rates
Cooling °C/min	5
Heating °C/min	5
Altitude Range
mbar	Atmospheric to 1

Communication

Ethernet

Ethernet capability to remotely monitor and control the chamber.

Web Server

Built-in web server allows remote view or control from any internet connected PC, tablet or smart phone

USB

USB Type-A host port to connect a keyboard or mouse or download CSV data via pen drive [max 2GB] USB Type-B data port for connection to PC for software upgrade and access memory card storage

combined altitude temperature humidity chamber usb cmenvirosystems

NI Lab view

The communication which used is MODBUS RTU protocol, which is an international standard for communication in process instrumentation and automation. Necessary changes to be made in the user’s software to communicate this in MODBUS RTU universal protocol. This feature can be used manual mode only.

Hardware

Enhanced with modular controller integrating multi-zone PID control and data acquisition. SIMATIC programmable logic controller. Touch screen controller, PLC and other controller components are of a generic make with an OEM software. Free software upgrades up to one year.

Memory

SD card of 2GB memory will store all the test program data and also the diagnostic data. This card is accessible by USB and Ethernet.

Digital Events

1 digital output for switching test specimen via potential free contacts, load max. 24 VDC, 5A

Programming & Report Generation

Programs

99 independent programs can be stored with name and number. Each of these programs have segments which can be looped to a previous segment and repeated up to 999 cycles, creating almost unlimited number of segments The chamber can be operated in manual mode, where the set point can directly be changed in the home screen The ramp rate can be set as a value in °C/min or ramp time Graphical representation of the temperature program The time is logged only when the set valve is within the band.

Trend Graph

Real time trend graph for temperature set value, temperature process value, humidity set value and humidity process value. Options of zoom in/out, pan and individual plot selection

Safety & Security

Power Resumption Modes

In case of a power failure, option of conditional restart based on temperature/time or continuous

Security

Multi level security of guest, user, admin and factory level users with individual password protection All settings can be reset to factory defaults using admin login

PID

6 zone based PID’s with auto recall of PID based on type of program, segment and zone can be set. Each of these PID’s can be set by using the auto tune feature or manually based on user’s requirements.

combined altitude temperature humidity chamber pid cmenvirosystems

Process Mimic

Graphical representation of the working of the chamber, with live status of all the components, including the current temperature/humidity process values, compressor suction/discharge pressures and return gas temperature