Emerson Micro Motion Configuration And Use Manual

Overview
The HART variables are a set of four variables predefined for HART use. The HART variables
include the Primary Variable (PV), Secondary Variable (SV), Tertiary Variable (TV), and
Quaternary Variable (QV). You can assign specific process variables to the HART variables,
and then use standard HART methods to read or broadcast the assigned process data.
Tip
The Tertiary Variable and Quaternary Variable are also called the Third Variable (TV) and Fourth
Variable (FV).
Restriction
One some devices, the PV is fixed to a specific process variable and cannot be changed.
Options for HART variables
Options for HART variablesTable 6-7:
Process variable
Primary Varia-
ble (PV)
Secondary
Variable (SV)
Third Variable
(TV)
Fourth Varia-
ble (QV )
Standard
Line Density ✓ ✓ ✓ ✓
Line Temperature ✓ ✓ ✓ ✓
Line Temperature (External) ✓ ✓ ✓ ✓
Line Pressure (External) ✓ ✓ ✓ ✓
Drive Gain ✓ ✓ ✓ ✓
Sensor Time Period ✓ ✓ ✓ ✓
Volume Flow Rate (External) ✓ ✓ ✓ ✓
Mass Flow Rate (Calculated) ✓ ✓ ✓ ✓
User-Defined Calculation Output ✓ ✓ ✓ ✓
Board Temperature ✓ ✓
Input Voltage ✓ ✓
API referral
Referred Density (API) ✓ ✓ ✓ ✓
Concentration measurement
Specific Gravity ✓ ✓ ✓ ✓
Concentration ✓ ✓ ✓ ✓
Referred Density (Concentration) ✓ ✓ ✓ ✓
Net Mass Flow ✓ ✓ ✓ ✓
Net Volume Flow ✓ ✓ ✓ ✓
Integrate the meter with the control system
90 Micro Motion
®
Fork Density Meters (FDM)

Emerson Micro Motion Specifications

General

Category	Measuring Instruments
Manufacturer	Emerson
Brand	Micro Motion
Type	Coriolis Flow Meter
Output	4-20 mA, HART, Foundation Fieldbus, Profibus, Modbus
Power Supply	24 V DC
Material	Stainless Steel, Hastelloy
Process Connection	Flanged, Threaded
Certifications	ATEX, IECEx, CSA, SIL
Pressure Rating	Varies by model; up to 10, 000 psi (690 bar)
Temperature Range	Varies by model; -400 to 750°F (-240 to 400°C)