
32
Reference Manual
00809-0100-4808, Rev DA
Installation
October 2016
Installation
Dimensions and typical mounting configurations are contained in this section.
Note
The transmitter is calibrated in an upright position at the factory. If you mount the transmitter in any
other position, the zero point will shift by an amount equivalent to the liquid head caused by the varied
mounting position. To reset the zero point, refer to
“Sensor trim” on page 18
.
Mounting requirements
Refer to
Figure 3-6
for examples of the following mounting configurations.
Liquid flow measurement
Place taps to the side of the line to prevent sediment deposits on the transmitter’s process isolators.
Mount the transmitter beside or below the taps so gases can vent into the process line.
Mount drain/vent valve upward to allow gases to vent.
Gas flow measurement
Place taps in the top or side of the line.
Mount the transmitter beside or above the taps so liquid will drain into the process line.
Steam flow measurement
Place taps to the side of the line.
Mount the transmitter below the taps to ensure that the impulse piping will stay filled with
condensate.
Fill impulse lines with water to prevent the steam from contacting the transmitter directly and to
ensure accurate measurement start-up.
Note
In steam or other elevated temperature services, it is important that temperatures at the coplanar
process flanges not exceed 250 °F (121 °C). In vacuum service, these temperature limits are reduced to
220 °F (104 °C).
Содержание Rosemount 3051N
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