Det-Tronics OPECL Infrared Hydrocarbon Gas Detector SAFETY MANUAL - Manual (Page 6)

CERTIFICATION AND FAILURE RATE DATA
All Safety-Certified OPECL models are certified
compliant to:
IEC61508: 2010
Type B Device
Systematic Capability: SIL 2 certified
HFT: 0
Low Demand Mode
PFDavg should be calculated for any safety instrumented
function using the OPECL. (Refer to FMEDA report for
necessary information, including DU rate.)
4-20mA SFF = 93.2%
Relay SFF = 92.2%
Safety Accuracy:
±0.25 LFL-meters or ±10% of
applied gas concentration,
whichever is greater.
Safety Response Time: <5 seconds to T90
Product Life:
10 years, based on
manufacturer data.
All failure rate data for SIL verification is in the FMEDA
report, which is available upon request.
OPECL Safety Certification Applies To:
Tx Firmware: 007746-002, Rev A
Tx Bd: 007515-005, Rev L
Rx Firmware: 007747-001, Rev H
Rx Bd Assy (Rx Bd): 009235-001, Rev D (007520-005,
Rev M)
Rx Relay Bd Assy: 007145-001, Rev C
Interface Bd: 007505-001, Rev G
Processor Bd: 007510-001, Rev J or K
Terminal Bd: 007140-003, Rev N
ADDITIONAL CERTIFICATIONS
FM, CSA, ATEX, IECEx, CE.
Refer to the Model OPECL Instruction Manual for
details.
For complete information regarding performance,
installation, operation, maintenance and specifications
of Model OPECL, refer to instruction manual 95-8556.
TERMS AND DEFINITIONS
FMEDA Failure Mode Effects and Diagnostics
Analysis
HART
Highway Addressable Remote
Transducer
HFT
Hardware Fault Tolerance
LFL Lower Flammable Limit
OPECL Open Path Eclipse
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
Detector Electronics Corporation
6901 West 110th Street • Minneapolis, Minnesota 55438 • Operator (952) 941-5665 or (800) 765-FIRE
Customer Service (952) 946-6491 • Fax (952) 829-8750 • www.det-tronics.com • E-mail: [email protected]