Dual-Channel Flow Calculations (Maths Functions); Wall Thickness Measurement - U-F-M KATflow 230 Operating Instructions Manual

KATflow 230 5 Commissioning

5.9 Dual-channel flow calculations (maths functions)

Where suitably equipped, dual channel calculations are available from the
System/Calculation/Math menu.
These allow the user to select the sum, difference, average (mean) or maximum of
the two flow channels.
This value may be displayed or applied to a Process Output by selecting MATH
from the appropriate output menu.
5.10 Wall thickness measurement (WTM)
Optional sensor probes to measure pipe wall thickness are available. The KF200
will recognise a connected probe when entering the Setup or WTG Wizards, the
measurement mode or the Scope function. Use the Setup Wizard or Installation
menu to set the pipe material. Select "Start Measurement". The KF200 will recog-
nise the probe and display the measurement screen. Wall thickness will be shown
when the sensor is in good acoustic contact with the pipe.
5.10.1 Wall Thickness Gauge (WTG) Wizard
To confirm pipe thickness and sound speed, select the "WTG Wizard" from the
"Quick Start" menu. Enter the approximate expected thickness as "Reference THK"
and select "Calibrate".
The screen displays the received acoustic pulse and values for the signal strength,
the transit time, the reference thickness, the expected sound speed, the measured
thickness at the reference sound speed and the measured sound speed at the ref-
erence thickness (top to bottom).
On leaving this screen using the <ESC> key, the flowmeter will ask if you wish to
store the recorded value of longitudinal sound speed ("L-Speed" in the Pipe Menu).
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