Wika T32.xS Bedienungsanleitung PDF herunterladen (Seite 19)

19WIKA safety manual temperature transmitter T32.xS

11583631.03 08/2014 GB/D/F/E

3.4 FMEDA thermocouple

with internal cold junction

(safety function for

4 … 20 mA output)

T32.xS

stand

alone

T32.xS with thermocouple (internal cold junction)

Close coupled

Extension wire

Low stress

High stress

Low stress

High stress

[FIT]

10 15 210 110 2.010

[FIT]

73 168 1.873 1.973 18.073

+λ

[FIT]

76 76 76 76 76

SFF Sensor/Transmitter

- / 93,7 % 95,0 / 93,7 % 90,0 / 93,7 % 95,0 / 93,7 % 90,0 / 93,7 %

PFD

avg

for T

proof

1 year

4,38 * 10

-5

6,57 * 10

-5

9,20 * 10

-4

4,82 * 10

-4

8,80 * 10

-3

DC diagnostic coverage 99,0 % - - - -

3.5 FMEDA thermocouple

with external cold

junction (safety function for

4 … 20 mA output)

T32.xS

stand

alone

T32.xS with thermocouple (external cold junction

)

Close coupled

Extension wire

Low stress

High stress

Low stress

High stress

[FIT]

11 24 228 119 2.019

[FIT]

76 210 1.954 2.015 18.115

+λ

[FIT]

76 76 76 76 76

SFF Sensor/Transmitter

- / 93,4 % 90,8 / 93,4 % 89,6 / 93,4 % 94,7 / 93,4 % 90,0 / 93,4 %

PFD

avg

for T

proof

1 year

4,70 * 10

-5

1,07 * 10

-4

9,99 * 10

-4

5,23 * 10

-4

8,84 * 10

-3

DC diagnostic coverage 99,0 % - - - -

3.6 FMEDA duplex sensor

Pt100 (safety function for

4 … 20 mA output)

T32.xS

stand

alone

T32.xS with duplex sensor Pt100

Close coupled

Extension wire

Low stress

High stress

Low stress

High stress

[FIT]

10 27 390 356 3.810

[FIT]

75 154 1.599 1.649 15.275

+λ

[FIT]

76 76 76 76 76

SFF Sensor/Transmitter

- / 93,8 % 82,0 / 93,8 % 80,0 / 93,8 % 82,0 / 93,8 % 80,0 / 93,8 %

PFD

avg

for T

proof

1 year

4,36 * 10

-5

1,19 * 10

-4

1,71 * 10

-3

1,56 * 10

-3

1,67 * 10

-2

DC diagnostic coverage 99,0 % - - - -

Appendix: SIL declaration of conformity

SIL Declaration of Conformity

Functional safety per IEC 61508:2010 / IEC 61511:2004

Page 3/4

1) Close coupled: The temperature transmitter is located in the connection head of the electrical thermometer.

2) Extension wire: The temperature transmitter is located outside of the connection head of the electrical thermometer, for

example in a cabinet distant from the measuring point

3) Low stress applies to a low vibration environment or the use of a cushioned sensor. Operation below 67 % maximum rating

according to specication

4) High stress applies to a high vibration environment. Operation above 67 % maximum rating according to specication

5) FIT = Failure in time, Unit: Quantity of failures per 10

6) Green marked values: SFF sucient for SIL 2

7) Green marked values: PFD

avg

< 35 % of the maximum allowed value for SIL 2 (PFD

avg

< 0,0035)

Yellow marked values: PFD

avg

< maximum allowed value for SIL 2 (PFD

avg

< 0,01)

8) Assumption: low stress, close coupled for external Pt100 sensor

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 63 64

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