Appendix B Configuration Parameters; Manual Setup - Emerson Rosemount 2140 Reference Manual

Reference Manual
00809-0100-4140
B Configuration parameters
B.1

Manual setup

B.1.1 Operation
Sensor operating mode
The level detector has three sensor operating modes:
Table B-1: Sensor Operating Modes
Option
Normal
Enhanced, Fault=Wet
Enhanced, Fault=Dry
Sensor output delay
When there is a detected change in process conditions, from wet-to-dry or dry-to-wet, the
Sensor Output Delay variable can action a delay of up to 3600 seconds before the change
of state is indicated. The default delay is one second.
Depending on the application, a suitable delay can prevent constant switching of the
output state. If, for example, there are waves in a tank, then there may be splashes causing
intermittently detected changes in process conditions. The sensor output delay ensures
that the fork is dry or wet for a suitable period before switching.
Media density
The media density parameter is used to specify the specific gravity of the process medium.
Table B-2: Media Density Settings
Setting
0.4 – 0.6 SG
0.5 – 0.9 SG
0.8 – 1.3 SG
1.2 – 3.0 SG
(1) Only available when the Sensor Operating Mode is set to Normal.
Rosemount 2140 and 2140:SIS Level Detectors
Description
Sensor fault detection is not enabled.
Do not select this option for SIS applications.
The level detector is forced to indicate a wet fork in a fail-safe
state.
The level detector is forced to indicate a dry fork in a fail-safe
state.
(1)
Configuration parameters
Range
3
400 to 600 kg/m
3
500 to 900 kg/m
3
800 to 1300 kg/m
3
1200 to 3000 kg/m
March 2022
93