Rosemount 3051, Quick Installation Manual

Page: 14 / 28

Quick Installation Guide
00825-0100-4051, Rev BA
June 2009
Rosemount 3051
14
Figure 8. Alarm Levels
Setting the alarm values and direction is dependent on whether or not the hardware switch
option is installed. You can use a HART master or communicator to set the Alarm and
Saturation values.
Switches installed
1. If using a communicator, use the following fast key sequence to set the Alarm and
Saturation values.
Alarm Levels - Fast Key; 1, 4, 2, 7, 7
Saturation Levels - Fast Key; 1, 4, 2, 7, 8
2. Manually set the direction for the Alarm to HI or LO using the ALARM switch as shown
in Figure 5 on page 7.
Switches not installed
1. If using a communicator, use the following fast key sequence to set the Alarm and
Saturation values and the Alarm Direction:
Alarm Levels - Fast Key; 1, 4, 2, 7, 7
Saturation Levels - Fast Key; 1, 4, 2, 7, 8
Alarm Direction Fast Key; 1, 4, 2, 7, 6
Rosemount Alarm Level
Namur Alarm Level
Custom Alarm Level
(3)(4)
(1) Transmitter Failure, hardware or software alarm in LO position.
(2) Transmitter Failure, hardware or software alarm in HI position.
(3) High alarm must be at least 0.1 mA higher than the high saturation value.
(4) Low alarm must be at least 0.1 mA lower than the low saturation value.
20.8 mA
high
saturation
3.9 mA
low
saturation
3.75 mA
(1)
21.75
(2)
mA 20 mA
4 mA
Normal
Operation
Normal
Operation
4 mA
20 mA
20.5 mA
high saturation
22.5
(2)
mA
3.8 mA
low saturation
3.6 mA
(1)
Normal
Operation
4 mA 20 mA
20.1 - 21.5 mA
high saturation
20.2 - 23.0
(2)
mA
3.7 - 3.9 mA
low saturation
3.6 - 3.8 mA
(1)
4051 RevBA.fm Page 14 Monday, June 22, 2009 3:15 PM