118_4416655_Rev06

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Average temperature measurement with MPT / RTD ___________________________________________________________________________ Figure 4.2 Multiple spot and tank data (2) Before programming the temperature data, the element positions must be known (refer to figures 4.1 and 4.2). The element positions of an MPT (Multiple Pt100 spot) element are listed on the test certificate of the MPT element. If the test certificate is not at hand, the element positions can also be calculated from the Model selection code on the identification label. Position 11 of the Model selection code defines the ‘Position of the lowest element’, and Positions 16 through 19 list the ‘Position of the highest element’ (unit is cm). VITO probe model Position 11 Model selection code Position of lowest element 361 C 1.00 m (3’ 3” 6 / 16 ) 361 D 0.15 m (5” 15 / 16 ) Table 4-1 Positions 9 and 10 of the Model selection code show the number of Pt100 elements of the MPT probe. Alternatively, the number of elements can be obtained by counting the number of wires of the MPT probe (not counting the two black wires). Instruction manual VITO Page 28
Average temperature measurement with MPT / RTD ___________________________________________________________________________ The elements are located at equal distances, hence the spacing is found: Then the element positions are found by: J0 = Position lowest element J1 = Position lowest element + 1 x element spacing J2 = Position lowest element + 2 x element spacing etc. For example: Position lowest element is 0.15 m (5.9”) Position highest element is 17.300 m (681.1 ”) Number of elements: 9 Step 1: Element spacing: Step 2: Element positions: J0 = 0.150 m (or 5.9 ”) J1 = 2.294 m (or 90.3 ”) J2 = 4.438 m (or 174.7 ”) J3 = 6.581 m (or 259.1 ”) J4 = 8.725 m (or 343.5 ”) J5 = 10.869 m (or 427.9 ”) J6 = 13.013 m (or 512.3 ”) J7 = 15.156 m (or 596.7 ”) J8 = 17.300 m (or 681.1 ”) Instruction manual VITO Page 29
Page 1: Instruction manual VITO interface a
Page 4 and 5: ___________________________________
Page 6 and 7: ___________________________________
Page 8 and 9: Introduction VITO Interface and ave
Page 10 and 11: Average temperature measurement wit
Page 38 and 39: Water bottom measurement __________
Page 46 and 47: Appendix __________________________
Page 48 and 49: Appendix __________________________
Page 50 and 51: Notes _____________________________
Page 52: Honeywell Enraf Delftechpark 39 262

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