Det-Tronics GTS Sensor Module SAFETY MANUAL User Manual
Page 6
CERTIFICATIoN AND FAILURE RATE DATA
All Safety-Certified GT3000 Toxic Gas Detectors are
certified compliant to:
IEC61508: 2010
Type B Element
Systematic Capability: SIL 2 certified
HFT: 0
Low Demand Mode
PFDavg should be calculated for any safety instrumented
function using the GT3000. (Refer to FMEDA report for
necessary information, including DU rate.)
Safety Accuracy:
±10% of applied gas
concentration.
Safety Response Time: Depends on sensor module
being used. Refer to GT3000
instruction manual for details.
Product Life:
3-5 years, based on
manufacturer data.
All failure rate data for SIL verification is in the FMEDA
report, which is available upon request.
ADDITIoNAL CERTIFICATIoNS
FM, CSA, ATEX, IECEx, CE, and others.
Refer to the GT3000 Instruction Manual for details.
For complete information regarding performance,
installation, operation, maintenance and specifications
of the GT3000, refer to instruction manual 95-8616.
TERMS AND DEFINITIoNS
AMS
Asset Management System
FMEDA
Failure Mode Effects and Diagnostics
Analysis
HART
Highway Addressable Remote
Transducer
HFT
Hardware Fault Tolerance
LFL
Lower Flammable Limit
V/V
Percent by volume
PFD
Probability of Failure on Demand
(Probability of Dangerous Failure)
PFDavg
Average Probability of Failure on
Demand
SFF
Safe Failure Fraction
SIF
Safety Instrumented Function
SIL
Safety Integrity Level
SIS
Safety Instrumented System
GT3000
Electrochemical Toxic Gas Sensor
(consists of one GTX Transmitter and
one GTS Sensor Module)
Detector Electronics Corporation
6901 West 110th Street • Minneapolis, Minnesota 55438 USA
Operator: (952) 941-5665 or (800) 765-FIRE
Customer Service: (952) 946-6491 • Fax (952) 829-8750
http://www.det-tronics.com • E-mail: [email protected]
Specifications subject to change without notice.
Det-Tronics, the DET-TRONICS logo, and FlexVu are registered trademarks
or trademarks of Detector Electronics Corporation in the United States,
other countries, or both. Other company, product, or service names may be
trademarks or service marks of others.
©Copyright Detector Electronics Corporation 2012. All rights reserved.
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Failure Category
l
sd
l
su
2
l
dd
l
du
SFF
3
GT3000 Analog Output with
H
2
S Sensors
0
199
3136
275
92.4%
GT3000 Analog Output with
O
2
Sensor
0
243
3123
141
96.0%
IEC 61508 Failure Rates in FIT
1
1
FIT = 1 Failure / 10
9
Hours
2
It is important to realize that the No Effect failures are no longer included in the Safe Undetected failure category according to
IEC 61508, ed2, 2010.
3
Safe Failure Fraction needs to be calculated on (sub)system level.