Tuesday, April 27, 2010

ACE INTRODUCE THE WORLDS THINNEST MAGNETOSTRICTIVE SENSOR FROM ASM


Automated Control Engineering (ACE) and ASM launch the new PCFP25 series of slim line Magnetostrictive sensors to compliment the existing “POSICHRON®” range. The PCFP25 is a slim, non-contact linear position sensor using Magnetostrictive sensing technology which has been specifically designed for harsh applications with limited space. With a profile of only 8mm x 28mm it can fit into areas that were previously inaccessible.

The PCFP25 is an industrial grade sensor which has been designed to be maintenance free due to the non-contact Magnetostrictive sensing technology which is also highly resistant to shocks and vibration. Due to the very small profile of the sensors they can also be used for safety critical applications where two PCFP25 units can be mounted together, either vertically or horizontally to provide two totally independent redundant outputs.

POSICHRON® represents a complete family of non-contact linear position sensors and the addition of the new PCFP25 extends the application ranges to areas with limited access or that are safety critical. This series of sensors offer a range of absolute analogue outputs of 0-10VDC and 4-20mA as well as CAN-bus versions and can be supplied in stroke lengths from 100mm to 5500mm in increments of 10mm.


For more information about the PCFP25 or other products supplied by ACE please contact the ACE staff on sales@aceg.com.au or visit the Automated Control Engineering Website.

Wednesday, April 14, 2010

The New Pepperl+Fuchs WirelessHART - Wireless Communication Systems make Communication Easy

Automated Control Engineering (ACE) introduces the new WirelessHART components from Pepperl+Fuchs - free communication from the need of wires, while integrating conventional field devices into the wireless world. With the WirelessHART standard, wireless communication is now reaching the process automation world. WirelessHART is based on the established HART protocol, which makes it easy to integrate it into any existing fieldbus infrastructure and uses a 2.4 GHz band as a transfer medium for several radio technologies.

WirelessHART™:
· Is an open and interoperative standard
· Is based upon the established HART protocol
· Uses known tools and procedures for configuration, maintenance and diagnosis
· Allows wireless access to existing field devices

WirelessHART uses a flat mesh network where all radio stations (field devices) form a network. Every participating station serves simultaneously as a signal source and a repeater. The original transmitter sends a message to its nearest neighbor, which passes the message on until the message reaches the base station and the actual receiver.

In addition, alternative routes are set up in the initialization phase. If the message cannot be transmitted on a particular path, due to an obstacle or a defective receiver, the message is automatically passed to an alternative route. So, in addition to extending the range of the network, the flat mesh network provides redundant communication routes to increase reliability.

The communication in the Wireless Network is coordinated with TDMA (Time Division Multiple Access), which synchronizes the network participants in 10 ms timeframes. To avoid jamming, WirelessHART uses also FHSS (Frequency Hopping Spread Spectrum). All 15 channels as defined in IEEE802.15.4 are used in parallel; WirelessHART uses FHSS to “hop” across these channels. Channels that are already in use are blacked out to avoid collisions with other wireless communication systems.

The combination of 10s synchronization and 15 channels allows 1500 communications per second.



For more information about the P+F WirelessHART please email on the ACE staff
sales@aceg.com.au or visit the ACE website.