Siemens Scanning, Volume Calculation MR, MultiRanger 100/200, Universal, Linear P050 =

Scanning

MultiRanger 100/200

When echo processing is complete (if more than 1 vessel is monitored) the scanning relay changes state to supply the transmit pulse to the other transducer after the Scan Delay (P727).

Scan Delay is automatically set by Maximum Process Speed (P003). When high speed scanning is required (sometimes the case for equipment position monitoring), the Scan Delay may be reduced. Reduce the Scan Delay only as required, otherwise premature scanning relay fatigue could occur.

MultiRanger 200

When two transducers are connected and configured in a dual point unit, the MultiRanger will scan each in turn via the scanner relay. When a single point MultiRanger is programmed for differential or average level Operation (P001 = 4 or 5), two transducers of the same type must be used.

Volume Calculation [MR 200]

Please note that the Volume Calculation feature is only available on the MultiRanger 200.

The unit provides a variety of volume calculation features (P050 to P055).

If the vessel does not match any of the eight preset Tank Shape calculations, a Universal Volume calculation may be used. Use the level/volume graph or chart provided by the vessel fabricator (or create one based on the vessel dimensions). Based on the graph, choose the Universal Volume calculation, and select the level vs. volume breakpoints to be entered (32 max). Generally, the more breakpoints entered, the greater the accuracy.

Universal, Linear (P050 = 9)

This volume calculation creates a piece-wise linear approximation of the level/volume curve. This option provides best results if the curve has sharp angles joining relatively linear sections.

Enter a Level Breakpoint at each point where the level/volume curve bends sharply (2 minimum).

For combination curves (mostly linear but include one or more arcs), enter numerous breakpoints along the arc, for best volume calculation accuracy.

Appendix B: Tech Reference

7ML19981FB06 MultiRanger 100/200 – INSTRUCTION MANUAL Page 227