Measurements

In this tab you can compare measurement values in the staging database with those in the schedule. If your simulation mode is set to Manual, you may have to click the Simulate button in the Simulation group of the Home ribbon tab for the measurement values in the schedule to appear.

Measurements can be of the following types:

• Inventory: The amount of material in a tank.

• Property: A property value of the material in a tank.

• Composition: The composition of the material in a tank, expressed as a list of grades and percentage values.

• Flow Rate: The flow rate of the material in a pipe.

• Flow Property: A property value of the material in a pipe.

Overriding measurements

You can override schedule measurements with actual measurements by selecting one or more rows, right clicking and choosing either Override Simulated Value With Actual (fixed) or Override Simulated Value With Actual (offset) from the context menu. The Override column is modified as follows:

• If the fixed option is chosen, the simulated value is replaced with the measured value.

• If the offset option is chosen, the simulated value is modified with an offset so that it matches the measured value.

Alternatively, you can write override values directly in the Override column. For example, enter =38.5 to override the simulated value with the value 38.5. You can also modify the schedule value using mathematical operators as shown in these examples:

• Type +0.1 to add 0.1 to the schedule value. Use the minus sign to subtract values.

• Type *1.1 to multiply the schedule value by 1.1, that is, to increase the value by 10%.

• Type +10% to obtain the same result as the previous example.

• Type /2 to halve the schedule value.

For measurements of type Flow Rate you can also specify the duration of the override, by entering and end date and time in the Override End Time column. By default, this value is set to the end of the scheduling period. Click the arrow button next to the value to open a calendar/clock widget to choose a new date and time.

Warning: No change is made to the schedule until you click the Apply button in the Modelling group of the Home ribbon tab.

The Measurements tab table

Below is a description of the columns in the Measurements tab.