Honeywell Enraf VITO, Instruction Manual

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Average temperature measurement with VITO temperature probes
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Instruction manual VITO Page 16
2.3 Operation
2.3.1 Display
For operation of the display and the information on it (if applicable), refer tot the instruction manual of the related
level gauge or indicator. Below, only an overview is given which display formats gives information about the
average temperature measurement.
Display format Displayed information
A Product level and average product temperature
C Average gas temperature and status
D Average product temperature and status
2.3.2 Data items
Table 2 – 3 lists a number of data items. They contain measured data, verification data and error data. The
verification data can be used to check the results of certain steps in the measuring sequence. The temperature
status indicates the validity of the measured data. The error data provides low level error information about the
temperature measurement (refer to section 2.4).
Item Description
AG
AP
MQ
MU
U0 - UF
V0 - VF Measured/ Average gas temperature
Calculated data Average product temperature
Temperature status request (refer to section 2.4.2)
Measured test resistance (floating point format);
Must be: 166.5
Ω ±
0.03%
Calculated spot positions (see below)
Spot temperatures (see below)
VV
RW Verification data Refer to description at section 2.4.3
Thermocouple wiring connection sequence
EM
FH
F0 Diagnostic data Error request (refer to section 2.4.1).
Fatal errors
Last fatal error
Table 2 – 3
Item
V0 is the temperature of the lowest spot element.
The calculated spot position item U0 corresponds with item V0 .
Refer to figures 2.1 and 2.2 to locate the lowest spot (L) with each particular temperature probe model.