Line Pressure Effect (Range 2 And 3); Compensating For Line Pressure (Range 4 And 5) - Emerson Rosemount 3051S Series Reference Manual

Reference Manual
00809-0100-4801, Rev HA
AMS Device Manager
1. Right click on the device and select Methods, then Calibrate, then Recall Factory Trim from the
menu
2. Set the control loop to manual, then select Next.
3. Select Analog output trim under Trim to recall and select Next.
4. Follow the on-screen prompts.
5. Select Finish to acknowledge the method is complete.
4.2.12

Line pressure effect (Range 2 and 3)

The following specifications show the static pressure effect for the Rosemount 3051S Range 2 and 3
Pressure Transmitters used in differential pressure applications where line pressure exceeds 2000 psi
(138 bar).
Zero effect
Ultra and Ultra for Flow: ± 0.05% of the upper range limit plus an additional ± 0.1% of upper range limit
Classic:
Example: Line pressure is 3000 psi (207 bar) for Ultra performance transmitter. Zero effect error
calculation:
± {0.05 + 0.1 x [3 – 2 kpsi]} = ± 0.15% of the upper range limit
Span effect
Refer to Rosemount 3051S
4.2.13

Compensating for line pressure (Range 4 and 5)

The Rosemount 3051S Range 4 and 5 Pressure Transmitters require a special calibration procedure when
used in differential pressure applications. The purpose of this procedure is to optimize transmitter
performance by reducing the effect of static line pressure in these applications. The Rosemount 3051S
Differential Pressure Transmitters (Ranges 0, 1, 2, and 3) do not require this procedure because
optimization occurs in the sensor.
Applying high static pressure to the Rosemount 3051S Range 4 and 5 Pressure Transmitters causes a
systematic shift in the output. This shift is linear with static pressure; correct it by performing the
"Sensor trim"
The following specifications show the static pressure effect for the Rosemount 3051S Range 4 and 5
Transmitters used in differential pressure applications:
Zero effect
±0.1% of the upper range limit per 1000 psi (69 bar) for line pressures from 0 to 2000 psi (0 to 138 bar)
For line pressures above 2000 psi (138 bar), the zero effect error is ±0.2% of the upper range limit plus an
additional ±0.2% of upper range limit error for each 1000 psi (69 bar) of line pressure above 2000 psi
(138 bar).
Operation and Maintenance
.
error for each 1000 psi (69 bar) of line pressure above 2000 psi (138 bar).
± 0.1% of the upper range limit plus an additional ± 0.1% of upper range limit
error for each 1000 psi (69 bar) of line pressure above 2000 psi (138 bar).
Product Data
procedure on page
Sheet.
77.
Operation and Maintenance
October 2018
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