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Det-Tronics UD10 FlexVu Universal Display SAFETY MANUAL User Manual

Page 6

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SpARE pARTS
Refer to “Replacement Parts” in the UD10 instruction

manual. Safety Certification is based on a sufficient

number of spares to achieve a 24 hour mean time to

repair.

CERTIFICATION AND FAILURE RATE DATA
All Safety-Certified UD10 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 UD10. (Refer to FMEDA report for

necessary information, including DU rate.)
Safety Accuracy:

<4% error (see

SPECIFICATIONS section

of instruction manual for

performance details).

Safety Response Time: The UD10 contributes less

than 2 seconds to the worst

case safety response time.

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.

ADDITIONAL CERTIFICATIONS
FM, CSA, ATEX, IECEx, CE, INMETRO (Brazil),

VNIIFTRI (Russia).

Refer to the Model UD10 Instruction Manual for details.

For complete information regarding performance,

installation, operation, maintenance and specifications

of Model UD10, refer to instruction manual 95-8661.

TERMS AND DEFINITIONS

FMEDA

Failure Mode Effects and Diagnostics

Analysis
HART

Highway Addressable Remote

Transducer
HFT

Hardware Fault Tolerance

LFL

Lower Flammable Limit

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

UD10 FlexVu

®

Model UD10 Universal Display

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 2013. All rights reserved.

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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.