Heat Quantity Measurement (Hqm); Sound Velocity Measurement (Svm) - U-F-M KATflow 230 Operating Instructions Manual

KATflow 230
Inputs
5.6.8 PT100 inputs
Wiring
Electrical 3 and 4 wire options.
Galvanically isolated from main electronics and from other I/O's.
characterist-
Temperature: Range -50 ... 400 ° C.
ics
Resolution: 0.01 K.
Accuracy: ±0.1 K.
5.6.9 Analogue current input 0/4 ... 20 mA
Wiring
Electrical Active (top) or passive (bottom) variants
Measuring range active = 0 ... 20 mA at 30 V
characterist-
Measuring range passive = 4 ... 20 mA
ics
Accuracy = 0.1 % of measured value

5.7 Heat quantity measurement (HQM)

Where equipped, heat quantity (energy) and heat flow (energy flow) can be
measured.
If a heat quantity unit is specified for the Process Value, the KF230 will prompt the
user for the Specific Heat Capacity of the medium in J/g/K (for example 4.186 J/g/K
for water).
The Output options menu for the PT100 will allow the user to select the
temperature input source; either PT100 temperature sensors or a fixed value for
measurement against a known inlet or outlet temperature. Where PT100 sensors
are selected, the Wizard will prompt the user for a temperature offset, which may
be useful where the temperature of the medium differs from the temperature of the
pipe wall (for example with unlagged pipes). If a fixed value is selected, the user will
be asked to specify this value.
When heat quantity units are selected, these behave as any other Process Value
and may be totalized, logged, or applied to a Process Output.

5.8 Sound velocity measurement (SVM)

The measured sound velocity (SOS) is available as a diagnostic function during
measurement and may be applied to a Process Output by selecting "C" from the
appropriate output menu.
5 Commissioning
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