Honeywell Enraf VITO, Инструкция по эксплуатации

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Average temperature measurement with MRT
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Instruction manual VITO Page 24
3.3 Operation
3.3.1 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
3.3.2 Data items
Table 3 – 1 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 3.4).
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 3.4.2)
Measured test resistance (floating point format);
Must be: 166.5
Ω ±
0.03%
Calculated element length with respect to lowest point of MRT (see below)
Element temperatures (see below)
VV Verification data Refer to description at section 3.4.3
EM
FH
F0 Diagnostic data Error request (refer to section 3.4.1).
Fatal errors
Last fatal error
Table 3 – 1
Items
U0 – UD gives the position of each element with respect to the lowest part of the MRT:
U0
: position of 1
st
element (0.25 m (9”
13
/
16
) or 0.65 m (2’ 1”
9
/
16
) or
J0
)
U1
: position of 2
nd
element (0.65 m (2’ 1”
9
/
16
) or 1.25 m (4’ 1”
3
/
16
) or
J1
)
U2 : position of 3
rd
element (1.25 m (4’ 1”
3
/
16
) or 1.95 m (6’ 4”
12
/
16
) or J2 )
U3 : position of 4
th
element (1.95 m (6’ 4”
12
/
16
) or 2.85 m (9’ 4”
3
/
16
) or J3 )
U4 : position of 5
th
element (2.85 m (9’ 4”
3
/
16
) or 4.15 m (13’ 7”
6
/
16
) or J4 )
U5
: position of 6
th
element (4.15 m (13’ 7”
6
/
16
) or 5.65 m (18’ 6”
7
/
16
) or
J5
)
U6 : position of 7
th
element (5.65 m (18’ 6”
7
/
16
) or 7.35 m (24’ 1”
6
/
16
) or J6 )
U7 : position of 8
th
element (7.35 m (24’ 1”
6
/
16
) or 9.25 m (30’ 4”
3
/
16
) or J7 )
U8 : position of 9
th
element (9.25 m (30’ 4”
3
/
16
) or 11.65 m (38’ 2”
11
/
16
) or J8 )
U9 : position of 10
th
element (11.65 m (38’ 2”
11
/
16
) or 14.65 m (48’ 0”
12
/
16
) or J9 )
UA
: position of 11
th
element (14.65 m (48’ 0”
12
/
16
) or 18.45 m (60’ 6”
6
/
16
) or
JA
)
UB : position of 12
th
element (18.45 m (60’ 6”
6
/
16
) or 22.95 m (75’ 3”
9
/
16
) or JB )
UC : position of 13
th
element (22.95 m (75’ 3”
9
/
16
) or 29.65 m (97’ 3”
5
/
16
) or JC )
UD : position of 14
th
element (29.65 m (97’ 3”
5
/
16
) or JD )
Items
V0
–
VD
gives the temperature of each element:
V0 : temperature of 1
st
element
V1 : temperature of 2
nd
element
|
VD
: temperature of 14
th
element