Emerson 3051N manual Transmitter Bench Calibration Tasks Field Calibration Tasks

Page 26

Rosemount 3051N

Reference Manual

00809-0100-4808, Rev CA June 2008

Smart transmitters operate differently than analog transmitters. A smart transmitter uses a microprocessor and sensor memory that contains information about the sensor’s specific characteristics in response to pressure and temperature inputs. A smart transmitter compensates for these sensor variations. The process of generating the sensor performance profile is called factory characterization. Factory characterization also provides the ability to readjust the 4 and 20 mA points without applying pressure to the transmitter.

The trim and rerange functions also differ. Reranging sets the transmitter analog output to the selected upper and lower range points and can be done with or without an applied pressure. Reranging does not change the factory characterization curve stored in the microprocessor. Sensor trimming requires an accurate pressure input and adds additional compensation that adjusts the position of the factory characterization curve to optimize transmitter performance over a specific pressure range.

NOTE

Sensor trimming adjusts the position of the factory characterization curve. It is possible to degrade the performance of the transmitter if the sensor trim is done improperly or with inaccurate equipment. Contact Rosemount Nuclear Instruments, Inc. at 952-949-5210 if you have questions.

Table 2-2. Recommended

Calibration Tasks.

Transmitter

Bench Calibration Tasks

Field Calibration Tasks

 

 

 

 

 

3051ND

1.

Set output configuration parameters:

1.

Reconfigure parameters if necessary.

3051NG

 

a. Set the process variable units.

2. Zero trim the transmitter to compensate for mounting

 

 

b. Set the output type.

 

 

 

effects or static pressure effects.

 

 

c. Set the range points.

 

 

 

 

 

 

 

d. Set the damping value.

 

 

 

2.

Optional: Perform a full sensor trim. (Accurate

 

 

 

 

multimeter required.)

 

 

 

3.

Optional: Perform an analog output trim. (Accurate

 

 

 

 

multimeter required.)

 

 

 

 

 

 

 

3051NA

1.

Set output configuration parameters:

1.

Reconfigure parameters if necessary.

 

 

a. Set the process variable units.

2.

Perform low trim value section of the full sensor trim

 

 

b. Set the output type.

 

 

 

procedure to correct for mounting position effects.

 

 

c. Set the range points.

 

 

 

 

 

 

 

d. Set the damping value.

 

 

 

2.

Optional: Perform a full sensor trim if equipment

 

 

 

 

available (accurate absolute pressure source

 

 

 

 

required), otherwise perform the low trim value section

 

 

 

 

of the full sensor trim procedure.

 

 

 

3.

Optional: Perform an analog output trim (accurate

 

 

 

 

multimeter required).

 

 

 

 

 

 

 

Notes:

•A HART Communicator is required for all sensor and output trim procedures.

•Rosemount 3051N Range 4 and Range 5 transmitters require a special calibration procedure when used in differential pressure applications under high static line pressure (see “Compensating Rosemount 3051N Range 4 and 5 Differential Transmitters for Line Pressure” on page 2-20).

2-14

Page 25 Page 27
Image 26
Page 25 Page 27
Contents Reference Manual Important Notice -- Errata Rosemount 3051N Return of Material Changes Changes from June 2006 to JuneOld Rosemount 3051N Table of Contents Specifications Reference Data InstallationTroubleshooting Hart Communicator OptionsAppendix a Glossary Index Using this Manual Section IntroductionRosemount 3051N Overview Safety Messages Transmitter FunctionsSecurity Alarm Level VerificationTransmitter Configuring Transmitter Alarm and Security Jumper Procedure Physical Removal Local Zero and Span Local KeysElectronics Board Setting the Loop to Manual Wiring Diagrams Bench Hook-up Wiring Diagrams Field Hook-up Process Variables Review Configuration DataCheck Output Set Process Variable Units Sensor TemperatureBasic Setup Set OutputRerange Rerange with a Communicator OnlyRerange with a Pressure Input Source and a Communicator Span and Zero Adjustment Buttons Detailed Setup Diagnostics ServiceCalibration Transmitter TestLoop Test Transmitter Bench Calibration Tasks Field Calibration Tasks Configure the Analog Output Parameters Calibration OverviewSensor Trim URVZero Trim Typical Zero vs Non-zero-Based Application IllustrationsFull Trim Digital Trim Connection Drawing 4-20 mA TransmittersRecall Factory Trim- Analog Output Digital-to-Analog Trim Using Other ScaleRecall Factory Trim Recall Factory Trim- Sensor Trim Analog Output TrimZero Effect HTc = URV + S URV Ps Rosemount 3051N Section Installation Rosemount 3051N Typical Installation Flowchart Mechanical Considerations General ConsiderationsSpecial Draft Range Considerations 156 181 16 x 11/4 Bolts for Mounting to 54.1 Transmitter 120 127 66.8 Traditional Flange Option Code H2 Dimensional Drawing Mounting Rosemount 3051N GAS or Liquid Service GAS Service Steam Service Electrical Considerations Process Connections Housing RotationPower Supply Wiring Power Supply Load LimitationsEnvironmental Considerations Access Requirements Cover InstallationGrounding the Transmitter Case Troubleshooting Symptom Corrective Actions Returning Rosemount Products and MaterialsNuclear Specifications SeismicModel Range Code Hydrostatic Test Pressure Reference Accuracy Performance SpecificationsAmbient Temperature Effect12 DriftRange Code Overpressure Effect Power Supply Effect Load Effect Mounting Position EffectOverpressure Effect Static Pressure Effect Range Code Static Pressure Zero Effect1Temperature Limits Functional SpecificationsService OutputRange Code Minimum Time Constant Tc Including Dead Time Td Span and Zero, Zero Elevation, SuppressionRange Minimum Span Upper URL Lower LRL Static Pressure Limits Maximum WorkingPressure12 Overpressure Limits Burst PressurePhysical Specifications Materials of Construction Option Code Description Add Ordering Information Mounting Bracket Options Configuration InformationHousing Material Conduit Entry Size Meters optionalDate  On Rosemount 3051N Exploded View with Coplanar Process Flange Rosemount 3051N Rosemount 3051N Overview Safety Messages LCD Meter Section OptionsCustom Meter Configuration Installing the Meter Exploded View of the Rosemount 3051N with Optional LCD MeterRosemount 3051N Diagnostic Messages ErrorPress Limit Operation Mounting BracketsTraditional Flange H2 Transient Protection Terminal Block T1Transient Protection Terminal Block T1 Rosemount 3051N Introduction Safety Messages Appendix a Hart CommunicatorRosemount 3051N Online Menu Function Hart Fast Key Sequence Figure A-3. Rosemount Hart terminal access door Connections and HardwareFigure A-4. Bench Hook-up MA Transmitters Action Keys RosemountCommunicator Keys Data Entry Function KeysAlphanumeric and Shift Keys Menus Functions Fast Key SequencesFast Key Sequence Conventions Fast Key Sequence Example Main MenuOnline Menu Touch Touch Screen Alphanumeric KeysMultifunction LED Multifunction LED Processing IndicationRosemount 3051N Message Description Diagnostic MessagesFast Key Sequences Hot Key options Rosemount 3051N Uploadvariable Rosemount 3051N Rosemount 3051N Glossary Smart Family Index 00809-0100-4808, Rev CA June Security Page ¢00809-0100-4801V¤
Top Page Image Contents