Pressure Measurement & Control


Airbus pressure testing unit

August 2003 Pressure Measurement & Control Asset Management Transport (Industry)

A Samsomatic testing unit is used for quality assurance tests during the final assembly of the Airbus A321. It is designed for testing the pressure resistance and air-tightness of the aeroplane's cabin. Tests are conducted before the cabin is furnished.

For the period of testing, it must be guaranteed that the unit can be pushed to the aeroplane, because this is moved from one assembly station to the other. The testing unit consists of two movable wagons which comprise all necessary instrumentation and control equipment, such as the control cabinet, the control valves, and the required accessories.

The pressure in the cabin must be increased according to an arbitrary time-dependent setpoint curve. It must be increased in several steps and at different rates, until it has assumed the maximum setpoint value. Then, the pressure is reduced, again in several steps and at different rates, to the air-tightness testing pressure. Once having completed this air-tightness test, the pressure has to be lowered to 0. After each program step, the program is interrupted, permitting the inspector to visually check the aeroplane. Afterwards, the next program step is started manually.

To protect the (very expensive) plane cabin against overpressure or excessive pressure rises or drops, the testing unit offers several safety precautions:

* Control loops are checked and monitored for system deviations and cable breakage (including alarm annunciation and control process interruption).

* Pressure monitors cause the air filling valve to close and the drain valve to open as soon as the pressure has reached a maximum limit.

* Mechanical safety valves.

* Electronic and mechanical travel limitation in order to provide safe limitation of pressure rises and drops.

* Failure-action of control valves in case of air or power failure.



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Differential pressure measurement in gas extraction and power generation project
VEGA Controls SA Pressure Measurement & Control
Methane exploration and extraction in Lake Kivu in the East African Rift Valley has primarily focused on gas composition analysis. The VEGABAR 82 pressure transmitter was used for differential pressure measurement, the key to monitoring gas levels within the lake.

Read more...
Palm-vein biometric kiosks secure SAP at Transnet Engineering
Access Control & Identity Management Transport (Industry) Videos
Securing access to SAP is essential to avoid fraud or corruption. Ensuring that users can access the software quickly, easily, and conveniently to do their jobs is also essential.

Read more...
Don’t buckle under pressure
VEGA Controls SA Pressure Measurement & Control
In Africa, urban populations are increasing and infrastructure is expanding at an unprecedented pace. This makes sustainable water management and treatment more crucial than ever. By investing in VEGA pressure instrumentation, water utilities and municipalities are equipping themselves with pressure sensors that facilitate sustainable water management focused on efficiency, reliability and resilience.

Read more...
VEGA handles the pressures of water treatment systems
VEGA Controls SA Pressure Measurement & Control
A water treatment system for a major metropolitan area in the Midwestern United States demands careful monitoring and management of processes across its sprawling network. Choosing VEGA for its process automation needs meant more than just obtaining precise and reliable pressure sensors.

Read more...
AI making South African roads safer
Asset Management Transport (Industry) AI & Data Analytics
Driver fatigue is a significant contributor to road accidents globally. While reliable statistics for South Africa are hard to come by, it has been estimated that fatigue is a factor in 25% - 30% of fatal crashes.

Read more...
Monitoring the health of systems
SA Gauge Pressure Measurement & Control
Pressure and temperature gauges are vital instruments in various industries. However, they are susceptible to failures that can compromise their accuracy and reliability. When these gauges fail, the consequences can be severe.

Read more...
Simplified fire and facilities management from one screen
Fire & Instrument Services Facilities & Building Management Fire & Safety Asset Management
Fire & Instrument Services (F&IS) and Scansoft are simplifying the complexities of facilities management, including fire safety, with iBMS Adrenaline, an integrated building and facilities management system enabling companies to monitor, control, and manage system hardware through a single interface.

Read more...
Three-quarters of cars sold in 2023 had embedded telematics
IoT & Automation Asset Management
A new research report from the IoT analyst firm, Berg Insight, shows the number of telematics service subscribers using embedded systems will grow at a compound annual growth rate (CAGR) of 14,6% 2023 to 2028.

Read more...
Vivotek unveils new AI RealSight Engine
AI & Data Analytics Asset Management
Vivotek has announced an upgrade to its AI security solution that transforms images captured by network cameras into clear, visible facial images under any lighting conditions. Even in backlit environments, facial expressions are rendered clearly.

Read more...
Enhancing beer brewing precision
VEGA Controls SA Pressure Measurement & Control
Brewing beer is a complex process that requires utmost precision in every step. To ensure precision, it is crucial to measure and control the pressure and point levels in the wort kettle and hops dissolver. Using VEGA instrumentation can offer numerous benefits to breweries.

Read more...