Emerson 4500 manual Fast Keys 3, 1

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Reference Manual

00809-0100-4027, Rev AA December 2005

Rosemount 4500

Rerange with a HART Communicator Only

Fast Keys

1, 2, 3, 1, 1

The easiest way to rerange is to use the HART Communicator only. This method changes the values of the analog 4 and 20 mA points independently without a pressure input.

From the HOME screen, enter the fast key sequence for “Rerange with a Communicator Only.”

1.At “Keypad Input” select 1 and use the keypad to enter lower range value.

2.From “Keypad Input” select 2 and use the key pad to enter upper range value.

Rerange with a Pressure Input Source and HART Communicator

Fast Keys

1, 2, 3, 1, 2

Reranging using the HART Communicator and a pressure source or process pressure allows reranging the transmitter when specific 4 and 20 mA points are unknown.

NOTE

The span is maintained when the 4 mA point is set. The span changes when the 20 mA point is set. If the lower range point is set to a value that causes the upper range point to exceed the sensor limit, the upper range point is automatically set to the sensor limit, and the span is adjusted accordingly.

1.From the HOME screen, enter the fast key sequence for “Rerange with a Pressure Input Source and a HART Communicator” to configure lower and upper range values and follow the on-line instructions.

Rerange with a Pressure Input Source and the

Local Zero and Span buttons (option D1)

The transmitter may be reranged using the local zero and span adjustments and a pressure source.

1.Using a pressure source with an accuracy three to ten times the desired calibrated accuracy, apply a pressure equivalent to the lower range value to the transmitter.

2.Push and hold the zero adjustment button for at least two seconds but no longer than ten seconds.

3.Apply a pressure equivalent to the upper range value to the transmitter.

4.Push and hold the span adjustment button for at least two seconds but no longer than ten seconds.

Span

ALARM

SPAN

SECURITY

ZERO

-LOOP

+LOOP

Zero

3-9

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Contents Reference Manual Page Rosemount 4500 Hygienic Pressure Transmitter Page Table of Contents Section Operation MaintenanceSection Introduction Using this ManualService Support Overview Safety Messages Section InstallationGeneral ConsiderationsEnvironmental Hart Installation Flowchart Mount the Transmitter Installation ProceduresLCD Switches LOI Switches Set SwitchesAMS Configure Alarm DirectionHart Terminal Blocks Connect Wiring and Power UpGrounding Installing the LCD MeterSection Configuration Commissioning on the Bench with Hart Setting the Loop to ManualWiring Diagrams Menu Tree Hart CommunicatorFunction Hart Fast Key Sequence Fast Key SequenceReview Configuration Data Check Output Sensor TemperatureProcess Variables Set Process Variable Units Basic SetupRerange Fast Keys 3, 1 LCD Display DampingFailure Mode Alarm and Saturation Detailed SetupAlarm and Saturation Level Configuration Alarm and Saturation Values for Multidrop Mode Alarm and Saturation Levels for Burst ModeAlarm Level Verification Process Alerts Scaled Variable Configuration Rosemount Re-mapping Diagnostics Service Sensor Temperature UnitTransmitter Test Loop Test Advanced Functions for Hart Protocol Saving, Recalling, Cloning Configuration DataRosemount Burst Mode Multidrop Communication Communicating with a Multidropped Transmitter Changing a Transmitter AddressPolling a Multidropped Transmitter Overview Calibration for Hart Protocol Operation and MaintenanceCalibration Overview Transmitter Data Flow with Calibration Options Determining Calibration Frequency Calculate total probable error TPEChoosing a Trim Procedure Sensor Trim Full Trim Zero TrimRecall Factory Trim Recall Factory Trim- Sensor Trim Analog Output Trim Digital-to-Analog Trim Recall Factory Trim- Analog OutputDigital-to-Analog Trim Using Other Scale Fail Module Diagnostic MessagesNonpv Limit Stuck KEY Troubleshooting Symptom Corrective Actions Performance Specifications SpecificationsAppendix a Reference Data 00809-0100-4027, Rev AA December Range and Sensor Limits Functional SpecificationsRosemount Physical Specifications 11/2 inch Tri-Clamp Module Dimensional DrawingsInch Tri-Clamp Module Fractional Line Fitting Module Code Process Connection Style Ordering InformationAppendix B Product Certificates North American Certifications Hazardous Locations CertificationsRosemount Rosemount Index Index-2 Page ¢00809-0100-4027 ¤