Proof Test Interval; Tools Required; Proof Test Options; Partial Proof Test - Emerson Rosemount 8800D Series Safety Manual

Proof tests
3.4

Proof test interval

The time intervals for proof testing are defined by the SIL verification calculation (subject
to the PFDAVG). The proof tests must be performed more frequently than or as frequently
as specified in the SIL verification calculation in order to maintain the required safety
integrity of the overall SIF.
Results from periodic proof tests shall be recorded and periodically reviewed. For the
specification of customer requirements required to fulfil this SIS requirement, please see
IEC-61511.
3.5

Tools required

•
•
3.6

Proof test options

The flowmeter has two proof tests you can use to detect failures. Proof tests can be
performed using ProLink III software or the Field Communicator.
Table 3-1:
Device
8800D
3.7

Partial proof test

The partial proof test is recommended for all Rosemount 8800D Series SIL 2/3 Capable
Vortex Flowmeters.
16
HART host or Field Communicator
mA meter
Proof test options
Proof test Description
Partial •
•
•
•
•
Comprehen- •
sive •
•
•
•
Low/High alarm checks
Visual inspection of flow meter
Single point reasonability check or internal
flow simulation at 2 points
Checking for alarms
Checking configuration
Low/High alarm checks
Visual inspection of flow meter
3 to 5-point calibration check using reference
standard
Checking for alarms
Checking configuration
DU failure
detection
High flow trip:
85%
Low flow trip:
77%
High flow trip:
94%
Low flow trip:
92%
™
Rosemount 8800D Safety Manual