COMMISSIONING
Part No.: 4417340 Revision 1 Service Manual 119
954 SmartServo FlexLine
7.3.7.4 Average Temperature & Water Level Measurement
7.3.7.4.1 Introduction
The Field Interface Instrument - VITO1 (FII-VT) board is a VITO-data
processor module, which calculates average product- and Vapour
temperatures, and optionally a water level
Figure 7-16
The FII-VT board with its planar transformer
By using the HART
®
protocol, 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 7-16.
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
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