Endress+Hauser Prothermo NMT532, Руководство по эксплуатации

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Prothermo NMT532 Operation
Hauser 61
2
3
4
1
1000 (39.37)
500 (19.69)
1500 (59.06)
a
b
A0038559
 40 Example of temperature elements near the tank bottom
a Temperature element 1
b Temperature element 2
1 Case 1
2 Case 2
3 Case 3
4 Case 4
• Case 1: If the liquid level is within this range, temperature element a will not be
used in average liquid temperature calculations.
• Cases 2 and 3: If the liquid level is within this range, temperature element a will be
used in average liquid temperature calculations.
• Case 4: If the liquid level is within this range, none of the temperature elements will
be used in average liquid temperature calculations.
8.5.1 Temperature adjustment: VH92
The following table shows the settings.
VH92
setting Presence
of liquid in
tank Temp.
element
open
(disrupted) Temp.
element
short
(short
circuit) Average liquid temperature error output
ON No No No 358 °C (676.4 °F)
No Yes No 358 °C (676.4 °F)
No No Yes 358 °C (676.4 °F)
Yes No No Average liquid temperature
Yes Yes No Open error set value (default 359 °C (678.2 °F))
Yes No Yes Short circuit error set value (default –49.5 °C (–57.1 °F))
OFF
(Default) No No/Yes No/Yes Average gas temperature
(The malfunctioning temperature element is skipped)
Yes No/Yes No/Yes Average liquid temperature
(The malfunctioning temperature element is skipped)