12

51-650 Echotel SIL Safety Manual

6.0

Appendices

6.1

SIL Declaration of Conformity

Functional safety according to IEC 61508.

Magnetrol International, Incorporated 5300 Belmont Road,

Downers Grove, Illinois 60515 declares as the manufacturer,

that the level switches:

Echotel Model 961/962 Ultrasonic Single and

Dual Point Level Switches

are suitable for use in safety instrumented systems according

to IEC 61508, if the safety instructions and following

parameters are observed:

FIT = Failure in Time (1

×10-9 failures per hour)

Product

Model 961

Loop-Powered

Model 961 AC/DC

Line-Powered

Model 962

Loop-Powered

Model 961 AC/DC

Line-Powered

SIL

2

2

2

2

Proof Test Interval

1 Year

1 Year

1 Year

1 Year

SFF

91.4%

92.0%

91.8%

91.5%

PFDavg Œ

1.61E-04

1.77E-04

1.87E-04

2.31E-04

λ

sd

0 FIT

0 FIT

0 FIT

0 FIT

λ

su

96 FIT

106 FIT

110 FIT

130 FIT

λ

dd

288 FIT

351 FIT

362 FIT

427 FIT

λ

du

36 FIT

40 FIT

42 FIT

52 FIT

Magnetrol International, Incorporated

5300 Belmont Road

Downers Grove, Illinois 60515

Name

Name

Title

Title

Date

Date

Œ

As determined in compliance with ANSI/ISA-84.01 clause 9.2.3 for 1oo1 system.