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Specifications and Reference Data
71
Specifications and Reference Data
May 2017
Reference Manual
00809-0700-4001, Rev AA
A.2.5 Selectable HART revisions
The Rosemount 3051P comes with Selectable HART
Revisions. Digital communications based on HART Revision
5 (option code HR5) or Revision 7 (option code HR7)
protocol must be selected. The HART revision can be
switched in the field using any HART based configuration
tool.
A.2.6 Overpressure limits
A.2.7 Burst pressure limit
A.2.8 Failure mode alarm
If self-diagnostics detect a sensor or microprocessor failure,
the analog signal is driven either high or low to alert the
user. High or low failure mode is user-selectable with a
jumper/switch on the transmitter. The values to which the
transmitter drives its output in failure mode depend on
whether it is configured to standard, NAMUR-compliant,
or
custom levels (see Alarm Configuration below). The values
for each are as follows:
A.2.9 Temperature limits
Ambient
Process
Process temperatures above 185 °F (85 °C) require lowering
the ambient limits by a 1.5:1 ratio:
Max. Ambient temperature in
°F = 185 –
Max. Ambient temperature in
°C= 85 –
Storage Title
A.2.10 Humidity limits
0–100% relative humidity
A.2.11 Turn-on time
Performance within specifications less than 2.0 seconds
after power is applied to the transmitter.
Range Pressure
1 750 psi (51.7 bar)
2 1,500 psi (103.4 bar)
3 1,600 psi (110.3 bar)
4 6,000 psi (413.7 bar)
Range Pressure
1–4 11,000 psi (758.42 bar)
High alarm Low alarm
Default
≥
21.75 mA
≤
3.75 mA
NAMUR compliant (1)
1. Analog output levels are compliant with NAMUR recommendation NE
43, see option codes C4 or C5.
≥
22.5 mA ≤ 3.6 mA
Custom levels
(2)
2. Low alarm must be 0.1 mA less than low saturation and high alarm must
be 0.1 mA greater than high saturation.
20.2 - 23.0 mA 3.4 - 3.8 mA
Sensor fill
Silicone –40 to 185 °F (–40 to 85 °C)
Inert –22 to 185 °F (–30 to 85 °C)
With LCD display –40 to 175 °F (–40 to 80 °C)
Sensor fill
(1)
1. 220 °F (104 °C) limit in vacuum service; 130 °F (54 °C) for pressures below
0.5 psia.
Silicone –40 to 250 °F (–40 to 121 °C)
Inert –22 to 250 °F (–30 to 121 °C)
With LCD display –40 to 185 °F (–40 to 85 °C)
Sensor
(1)
1. If storage temperature is above 85 °C, perform a sensor trim prior to
installation.
Silicone –50 to 230 °F (–46 to 110 °C)
Inert –50 to 185 °F (–46 to 85 °C)
With LCD display -40 to 175 °F (-40 to 80 °C)
ProcessTemp 185
–
( )
1.5
-------------------------------------------------------------
ProcessTemp 85
–
( )
1.5
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