Detailed Transmitter Setup - Emerson Rosemount 2051 Reference Manual

Configuration
February 2024
2.6.3 Configure LCD display with a local operator interface (LOI)
Refer to
Figure 2-12: Display with LOI
VIEW CONFIG
ZERO TRIM
UNITS
RERANGE
LOOP TEST
DISPLAY
EXTENDED MENU
EXIT MENU
2.7

Detailed transmitter setup

2.7.1 Configuring alarm and saturation levels
In normal operation, the transmitter will drive the output in response to pressure from the
lower to upper saturation points. If the pressure goes outside the sensor limits, or if the
output would be beyond the saturation points, the output will be limited to the associated
saturation point.
The transmitter automatically and continuously performs self-diagnostic routines. If the
self-diagnostic routines detect a failure, the transmitter drives the output to configured
alarm and value based on the position of the alarm switch.
Table 2-4: Rosemount alarm and saturation values
Level
Low
High
Table 2-5: NAMUR-compliant alarm and saturation values
Level
Low
High
Table 2-6: Custom alarm and saturation values
Level
Low
High
You can configure failure mode alarm and saturation levels using a communication device,
AMS Device Manager, or the local operator interface (LOI). The following limitations exist
for custom levels:
• Low alarm level must be less than the low saturation level
• High alarm level must be higher than the high saturation level
24
Figure 2-12 for LCD display configuration using an LOI.
4–20 mA (1–5 Vdc) saturation
3.90 mA (0.97 V)
20.80 mA (5.20 V)
4–20 mA (1–5 Vdc) saturation
3.80 mA (0.95 V)
20.50 mA (5.13 V)
4–20 mA (1–5 Vdc) saturation
3.70 mA– 3.90 mA (.90 –.95 V)
20.10 mA –22.90 mA (5.025 –5.725 V)
DISPLAY
PRESS (on/off)
SCALED (on/off)
TEMP (on/off)
%RANGE (on/off)
ANALOG (on/off)
STRTUP (on/off)
BACK TO MENU
EXIT MENU
4–20 mA (1–5 Vdc alarm
≤ 3.75 mA (0.95 V)
≥ 21.75 mA (5.40 V)
4–20 mA (1–5 Vdc) alarm
≤ 3.60 mA (0.90 V) (.90 –.95 V)
≥22.50 mA (5.63 V) (5.05 –5.75 V)
4–20 mA (1–5 Vdc) alarm
3.60–3.80 mA (.90 –.95 V)
20.20 mA – 23.00 mA (5.05 –5.75 V)
Reference Manual
00809-0100-4107
Rosemount 2051