Emerson Process Management rosemount 3300 series manual 7UDQVPLWWHU8QLWV, 3UREH/HQJWK

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00809-0100-4811, Rev AA October 2002

Rosemount 3300 Series

%$6,& &21),*85$7,21 This section describes the various HART commands used to configure the 3300 Series of transmitters for level measurements. The transmitter outputs a 4 - 20 mA signal proportional to the primary variable. Three additional variables are available through the HART signal.

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You may assign up to four transmitter variables. Typically, the primary variable (PV) is configured to be Aggregate Level, Interface Level or Volume.

For the model 3301 the primary variable is typically set to be Level. If the transmitter is in the Immerse Probe mode (see section “Measurement Mode” ) the PV is normally set to Interface Level.

For the model 3302 the PV is typically set to Interface Level, but Level and other options may also be used.

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Set transmitter units for level and temperature.

The Reference Gauge Height is the distance from the Upper Reference Point to the bottom of the tank (see Figure 4-1 on page 4-2). When setting the Reference Gauge Height, keep in mind that this value is used for all level measurements performed by the 3300 Series transmitter.

The Reference Gauge Height must be set in linear (level) units, such as feet or meters, regardless of primary variable assignment.

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The probe length is the distance from the Upper Reference Point to the end of the probe, see Figure 4-1.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.

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