Proof Testing; Notes On The Redundant Configuration Of Multiple Sensors - Endress+Hauser Proserve NMS80 Functional Safety Manual

Appendix
36
7.2

Proof testing

System-specific data
Company
Measuring point/TAG no.
Facility
Device type/Order code
Serial number of device
Name
Date
Access code (if individual to each device)
Locking code used
Signature
Device-specific commissioning parameters
Upper density
Process condition
High stop level
Low stop level
Empty
Tank reference height
Proof test protocol
Test step
1. Current value 1
2. Current value 2
3. Current value 3 (if necessary)
4. Current value 4 (if necessary)
5. Current value 5 (if necessary)
Resistance value
7.3 Notes on the redundant configuration of multiple
sensors
This section provides additional information regarding the use of homogeneous
redundancy sensors e.g. 1oo2 or 2oo3 architectures.
The common cause factors ß and ß
the device. These must be used when designing the sensor subsystem.
Minimum value ß with homogeneous redundant use
Minimum value ß with homogeneous redundant use
D
The device meets the requirements for SIL 3 in homogeneous redundancy.
SIL
Set point
indicated in the table below are minimum values for
D
Proserve NMS80
 7452
Actual value
5%
2%
Endress+Hauser