CATH Chamber (Combined Altitude, Temperature & Humidity)
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.
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.
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| 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 | ||||
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
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
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
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.
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
Delay Start
Real time clock based, delayed start function
Diagnostics
Event viewer will display a log of all errors/actions with a date and time stamp PLC inputs and outputs status will be indicated
Service Monitor
Log of critical components life cycle with a predefined life cycle time and elapsed time in hours
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