Average temperature measurement with VITO temperature probes
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Instruction manual VITO Page 15
2.2.3 Temperature verification VITO probes
After the settings described in section 2.2.1 and, if applicable in section 2.2.2, are entered the temperature
measurement is operational.
The following checks can be made to verify if the settings are made correct and the product temperature reading
is correct.
• Read item AP (Average Product temperature):
This data item is preceded by four status characters. The first status character is a hexa-decimal number,
indicating the highest selected element for average product temperature calculation. This can be judged,
on basis of the product level, and with the items U0 – UF (calculated spot positions), item MO
(temperature element offset), item MP (product immersion depth) and item MI (switch hysteresis).
Refer to Detail A in figure 2.1:
A spot element will be used in the average product temperature calculation if its position is below the
actual level minus the product immersion depth.
A spot element won’t be used in the average product temperature calculation if it is above the actual level
minus the product immersion depth plus the switch hysteresis.
• Verify the average product temperature by manual measurement:
Refer to Appendix C for the procedure to verify the average product temperature reading by using a
portable electronic thermometer.
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