HART Utilities and Functions of HART Calibrator

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HART Utilities and Functions of HART Calibrator

Following functions to be discussed here.

Tagging
Trimming
Configuring
Loop Test
Commissioning
Utilities
•–Ininitial commissioning, the transmitter needs to be:
»Tagged
»PV units Set
»Ranging Set
»Damping adjusted
»Transfer function changed
•Pressure only
•Sq, Root, Linear
HART Utilities and Functions of HART Calibrator
Configuring the temperature sensor on a smart temperature transmitter
•Smart temperature transmitters can be configured for a variety of sensors
–Thermocouples (many types)
–RTD (many types), 2,3 or 4 wire
•Select Sensor from the setup menu to access
–Supported devices
HART Utilities and Functions of HART Calibrator

Multi-variable Transmitters

•Many smart transmitters have multiple temperature and pressure sensor inputs
–Temperature:
»Sensor burnout protection (back up sensor)
»Temperature differential measurements
»Temperature averaging measurements
–Pressure: 
»Static pressure
»Differential pressure

Fluke-744 Hart Utilities

•Select the “Done” and then the “Abort” softkeys
•Select the “Service” softkey
•“Loop test” sets the transmitter output to a specified 4-20 mA output signal by issuing a PVOA command
–Tests output stage of transmitter, input of PLC or other device
•Input trim, Output trim for non-documented adjustments
HART Utilities and Functions of HART Calibrator

Application Notes

•Transmitter Calibration App. Note
•Hart Transmitter Calibration
•Limit Switch App. Note
•Custom  Units App. Note
•Pressure Data Sheet
•Accessories Data Sheet
Download from www.fluke.com/processtools

Documenting Process Calibrators

•Source / measure all process parameters
•Powerful, yet easy to use
•Capture and document results
•Support popular software
•Truly handheld
•Rugged and reliable
•Bar code compatible
•HART Capability (744)

Introduction to the DPC

        •Documenting
–Load procedures from a PC
–Stores calibration results gathered in the field;  upload results, print or populate a database
•Process
–Process instrumentation is the target workload; instrumentation techs primary end user
•Calibrator
–Measures and sources DCV, mA, freq, temp, pressure, measures ACV
Please read also: CALIBRATION OF VALVES WITH ACTUATOR ACCESSORIES
Please read also: Differential Pressure DP Type Transmitter Calibration
Please read also: Pressure switch calibration and I to P Converter

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  1. September 3, 2018

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    […] HART communicator shall be used for configuration check & testing. […]

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