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Monthly Members Meeting - Thursday October 26, 2006
Failsafe Threshold Detection & Switching
SIS, SIL, SOS ... can somebody tell me what the #$%^& is going on!
Designing safety into a manufacturing process (Safety Instrumented System)
was unheard of years ago. It just made sense back then that if you had well
designed field devices, put them together by someone knowledgeable in process
design, you would end up with a relatively safe process. Until you find out that
the high limit temperature switch Malcolm sold you 10 years ago failed to work
when called upon.
Today new safety regulations ensure that there is accountability in design issues
right down to the device level; and manufacturers have met the challenge and
delivered the goods, meet the new kid on the block Failsafe Threshold Detection
& Switching.
Not only have these new devices met and surpassed regulatory standards such
as the ones TSSA requires for all hard-wired safety shutdown devices, they have
included more functionality that supplement the basic on/off conditions required
of a switch. Some of the design features include:
watchdog circuitry that continuously monitors the device
a digital display showing the process variable status
easy to use push button settings
fully adjustable setpoint and deadband settings
optional 4-20 mA outputs
health status display and communication
plugged notification
communicates and draws its power from the PLC or DCS
In his presentation Raj Bhatthal from United Electric Controls will give us an
overview of how these new devices operate and their use in field applications.
Raj has been with UE for over 12 years and has held various positions before
being assigned to the role of Regional Sales Manager 6 years ago and is
responsible for all of UE's business in Eastern Canada.
Location: Park Plaza Toronto Airport
33 Carlson Court Toronto, Ontario M9W 6H5
Phone: (416) 675-1234 FAX: (416) 675-3436Dinner: 5:30 - 6:30 PM ($10 members - $20 non-members - $5 Students)
Presentation: 7 PM (no charge for attending presentation only)
RSVP to : office@isatoronto.org
PARKING IS FREE (Exit tickets will be provided in the meeting)
Carlson Court is accessed from Dixon Road between Carlingview Dr. and HWY 27
Turn north on Attwell Dr. to Carlson Park Plaza is on the end across from LeBiftheque
