Figure 2-2: Alarm Levels and Operation Values
A
B
3.9 mA
(3)
4 mA 20 mA 21.75 mA
(2)
3.75 mA
(1)
20.8 mA
(4)
C
B
3.8 mA
(3)
4 mA 20 mA 22.5 mA
(2)
3.6 mA
(1)
20.5 mA
(4)
A. Rosemount Alarm Level
B. Normal Operation
C. Namur Alarm Level
1.
Transmitter Failure, hardware or software alarm in Low position.
2. Transmitter Failure, hardware or software alarm in High position.
3. Low saturation
4. High saturation
It is assumed that the current output signal is fed to a SIL 2-compliant analog input board
of a safety logic solver. For instructions on alarm level settings see Reference Manual.
Note
Only the High or Low Alarm Mode can be used for the safety function. Do not choose
Freeze Current.
2.5 Site acceptance
After installation and/or configuration, proper operation of the transmitter (including
verification of all configuration changes) must be verified. A site acceptance test is
therefore recommended. The proof tests can be used for this.
Safety Manual Installation and commissioning
00809-1900-4530 September 2020
Rosemount 5300:SIS Level Transmitter 15
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