Rosemount 1199, Справочное руководство

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Reference Manual
00809-0100-4002, Rev BB
November 2012
Rosemount 1199
4-10
Closed tank example
(non-zero Based lower
range value)
NOTE
For Fieldbus: refer to the AI Function Blocks in product manual
Figure 4-8. Tuned system
Tank Span (based on design) = 81 inH
2
O
1. Initial bench set up for pressure verification if required (Range
transmitter): Seals on same elevation.
If the transmitter does not require bench pressure verification skip
step 1 and proceed to step 2.
(Pressure verification)
Power and range the transmitter using a HART Field communicator to
the required tank span. (Figure 4-8 example) With the required
calibration fixture attached to the seal assemble apply pressure.
4mA = 0 inH
2
O
20mA = 81inH
2
O
2. Mount the transmitter and bolt the seal to the process taps. Most
common is High sensor side is mounted to low process tap and Low
sensor side is mounted to high process tap.
3. Wire and apply power to the transmitter.
4. If the transmitter has a Zero button, push the zero button. This will
automatically re-range the transmitter so the LRV (4 mA) will
equal the current applied pressure value and the 20 mA URV will
equal the span value.
Example
With the transmitter ranged 4 mA = 0 and 20 mA = 81inH
2
O per
Figure 4-8, after mounting and pushing the zero button the transmitter
would not be ranged 4mA = -112.08 and
20 mA = -31.08inH
2
O per HART Example 3.
NOTE
If you have a HART field communicator device hooked up when the zero
button is pushed you have to re-boot the Hart field communicator to see the
change.
1 Overview
2 Comm Status: Burst
3 Pressure
0.00 inH
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4 Analog Output 4.00 mA
5 Pressure URV 81.00 inH
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6 Pressure LRV 0.00 inH
2
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7 Device Information
HART Example 1