Det-Tronics OPECL Infrared Hydrocarbon Gas Detector SAFETY MANUAL User Manual

Page 6

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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]

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