Emerson 4500 User Manual
Reference Manual
00809-0100-4027, Rev AA
December 2005
Rosemount 4500
A-3
Overpressure Limits
Transmitters withstand the following pressure without damage:
Range 1: 150 psi (10.34 bar)
Range 2: 300 psi (20.68 bar)
Burst Pressure Limits
Range 1: 300 psi (20.68 bar)
Range 2: 450 psi (31.02 bar)
Temperature Limits
Ambient
32 to 140 °F (0 to 60 °C)
Storage
–22 to 185 °F (–30 to 85 °C)
Process Temperature Limits
32 to 400°F (0 to 204°C)
Horizontal Mount
For process temperatures above 293°F (145°C), derate ambient
temperature by 7°F (4°C) for every 18°F (10°C) increase in process
temperature.
temperature by 7°F (4°C) for every 18°F (10°C) increase in process
temperature.
Top Mount
For process temperatures above 266°F (130°C), derate ambient
temperature by 9°F (5°C) for every 18°F (10°C) increase in process
temperature.
temperature by 9°F (5°C) for every 18°F (10°C) increase in process
temperature.
Vacuum Application
Process vacuums in excess of 200 mmHg requires derating process
temperature to 212°F (100°C).
temperature to 212°F (100°C).
Turn-On Time
Performance within specifications less than 2.0 seconds after power is
applied to the transmitter
applied to the transmitter
Damping
Analog output response to a step input change is user-selectable from 0 to 60
seconds for one time constant. This software damping is in addition to sensor
module response time.
seconds for one time constant. This software damping is in addition to sensor
module response time.
Failure Mode Alarm
HART 4-20mA (output code A)
If self-diagnostics detect a gross transmitter failure, the analog signal will
be driven offscale to alert the user. Rosemount standard and custom alarm
levels are available.
be driven offscale to alert the user. Rosemount standard and custom alarm
levels are available.
High or low alarm signal is software-selectable.