COMMISSIONING
120 Service Manual Part No.: 4417340 Revision 1
954 SmartServo FlexLine
7.3.7.4.2 VITO Interface Types
For temperature and/or water level measurement, a proper VITO probe
must be connected to the FII-VT module, using a VITO interface.
There are 3 VITO interface types:
 762 VITO MTT interface for 16-spot temperature
measurement
(thermocouple principle) and optionally a water bottom
measurement
 762 VITO LT interface for 9-spot temperature measurement
(thermo- couple principle) and optionally a water bottom
measurement
 762 VITO MRT interface for Multiple Resistance
Thermometer and multi-spot (resistance variation principle)
measurement
7.3.7.4.3 Commissioning
Commissioning Parameters for MTT/LT Probes
The following 9 configurations are possible:
Enraf Model VITO Type Description
764C MTT Temperature probe lowest spot next to Pt100, no water probe
764D lowest spot below Pt100, no water probe
766C MTT Combi probe lowest spot next to Pt100, combined with water probe
766D lowest spot below Pt100, combined with water probe
767C LT Temperature probe lowest spot next to Pt100, no water probe
767D lowest spot below Pt100, no water probe
768C LT Combi probe lowest spot next to Pt100, combined with water probe
768D lowest spot below Pt100, combined with water probe
765 Water probe water probe only
These models are depicted in Figure 7-17 and Figure 7-18
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