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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.
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.
Vacuum Application
Process vacuums in excess of 200 mmHg requires derating process
temperature to 212°F (100°C).
Turn-On Time
Performance within specifications less than 2.0 seconds after power is
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.
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.
High or low alarm signal is software-selectable.