Emerson Rosemount 3308, Справочное руководство

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Reference Manual
00809-XXXX-4811, Rev AA
February 2012
5-9
Rosemount 3308
PRELIMINARY
BASIC CONFIGURATION
This section describes the various HART commands used to configure the
Rosemount 3308 transmitter for level measurements. The transmitter outputs
a digital HART wireless signal.
Transmitter Variables
You may assign up to four transmitter variables. Typically, the primary variable
(PV) is configured to be Aggregate Level, Interface Level or Volume.
Measurement Units
Set transmitter units for level and temperature.
Tank Height
The Tank Height is the distance from the Upper Reference Point to the bottom
of the tank (see Figure 5-3 on page 5-3). When setting the Tank Height, keep
in mind that this value is used for all level measurements performed by the
Rosemount 3308 transmitter.
The Tank Height must be set in linear (level) units, such as feet or meters,
regardless of primary variable assignment.
Probe Length
The probe length is the distance from the Upper Reference Point to the end of
the probe, see Figure 5-3. If the probe is anchored to a weight do not include
the height of the weight. This parameter is pre-configured at factory. The
Probe Length needs to be changed if, for example, the probe is shortened.
HART Comm
TO BE
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HART Comm
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HART Comm
TO BE
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HART Comm
TO BE
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