UMSITRPDS-1
Glossary
November 2010
10-3
Network Element
– Any field instrument or primary or secondary master.
Network Resistance
– The sum of the current sense resistance, barrier resistance, if any, and any other
resistance on the network.
NPT
– National Pipe Thread
Point-To-Point Network
– A network having a single field instrument and primary master. Analog
signaling or analog plus digital signaling is possible.
Polling Address
– A unique number assigned during configuration that identifies a transmitter connected
to a network. An address between 1 and 15 assigned to a transmitter connected to a Multi-Drop network.
A transmitter connected to a Point-to-Point network has 0 as an address.
Primary Master
– The single controlling network element that communicates with one or more field
instruments, such as a Model 353 Process Automation Controller.
Reranging
– Changing a transmitter’s 4 and 20 mA settings (i.e., setting LRV and URV); this is a
configuration function.
Secondary Master
– An occasional user of a network, such as the HART Communicator.
Sediment
– Solid material that settles in a liquid or gas and can cause blockage that may affect pressure
measurement.
Sensor
- Measuring cell
Set
- Zero and full scale are set using two reference pressures. See Adjust.
Span
– Algebraic difference between the upper and lower range values (URV and LRV).
Switch Point
- See Application Point.
Transducer
– A device that accepts an input, such as pressure, and converts that input into an output of
some other form, such as a voltage.
Upper Range Limit (URL)
– The highest value of the measured variable that a transmitter can be
configured to measure.
Upper Range Value (URV)
– Representing the 20 mA point in a transmitter’s output, this is the highest
value of the measured variable that the transmitter is currently configured to measure.
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Summary of Contents for 7MF4033 series
Page 48: ...Model 275 Universal Hart Communicator UMSITRPDS3 1 November 2010 2 26 ...
Page 86: ...Installation UMSITRPDS3 1 November 2010 4 34 ...
Page 152: ...Calibration and Maintenance UMSITRPSD3 1 November 2010 7 20 ...
Page 158: ...Circuit Description UMSITRPDS3 1 November 2010 8 6 ...
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Page 200: ...Model Designations and Specifications UMSITRPDS3 1 November 2010 9 42 ...
Page 204: ...Glossary UMSITRPDS3 1 November 2010 10 4 ...
Page 208: ...Appendix A Online Configuration Map UMSITRPDS3 1 11 4 November 2010 ...
Page 216: ...Appendix C Elevation and Suppression Correction UMSITRPDS3 1 13 4 November 2010 ...