User Manual

Commissioning
SmartRadar FlexLine Part No.: 4417.762_Rev07
6 - 134 Service Manual
6.10 Average Temperature & Water Level Measurement (FII-VT)
6.10.1 Introduction
The Field Interface Instrument - VITO
1
(FII-VT) board is a VITO-data
processor module, which calculates average product- and vapour
temperatures, and optionally a water level.
ESF07-0016
FIGURE 6-34 The FII-VT board with its planar transformer
By using the HART
®
protocol (see also 6.8.1), the FII-VT module can be
connected to one VITO-interface which in turn is connected to a probe
for product temperature, vapour temperature, water level, or a
combination of these.
The FII-VT board has a planar transformer for galvanic isolation from
the HART bus. See FIGURE 6-34.
LED LE1 is the board’s
[Health] LED. LEDs LE2 and LE3 will be flashing
to indicate activity on the HART bus. LE2 indicates data is being
transmitted (Tx), LE3 indicates data is being received (Rx).
1. Versatile In-Tank Observer
LE1
LE2LE3
planar
transformer