Product description RIA15
10 Endress+Hauser
For a flowmeter, such as the Promass, these four values can be as follows:
• Primary process variable (PV) →Mass flow
• Secondary process variable (SV) → Totalizer 1
• Third process variable (TV) → Density
• Fourth process variable (QV) → Temperature
The HART® section at the end of these Operating Instructions provides examples of these
four device variables for multivariable measuring devices → 62.
Please refer to the Operating Instructions for each device for details on the variables
that are set as default on the sensor/actuator and how they can be changed.
The process display unit can show each of these values. The individual values must be
activated in the SETUP – HART1 to HART4 menu for this purpose. The individual
parameters are assigned to fixed process variables in the device in this case:
HART1 = PV
HART2 = SV
HART3 = TV
HART4 = QV
For example, if the PV and TV are to be displayed on the process display unit, HART1 and
HART3 must be activated.
The values can either be shown alternately on the process display unit or one value is
displayed continuously and the other values are only shown by pressing '+' or '–'. The
switching time can be configured in the "EXPRT" – "SYSTM" – "TOGTM" menu.
3.2.1 RIA15 as a remote display and for operation of the Micropilot
FMR20
The Micropilot is a "downward-looking" measuring system, operating based on the time-of-
flight method (ToF). It measures the distance from the reference point (process
connection) to the product surface. Radar impulses are emitted by an antenna, reflected
off the product surface and received again by the radar system.
The FMR20 can be adjusted under the "SETUP → LEVEL" menu (see operating matrix). The
measured value displayed corresponds to the distance measured or, if linearization is
enabled, to a percentage value.
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