About a host calculated data source

Generate hourly history

Enables the collection of hourly Historical data for this host meter.

Note: If you select Generate hourly history and Generate daily history, only hourly history will be generated.

Generate daily history

Enables the collection of daily Historical data for this host meter.

Note: If you select Generate hourly history and Generate daily history, only hourly history will be generated.

Compute energy

Enables the calculation of the energy using the current active gas analysis data (if it is not measured).

Manual Input Paths

The Manual Input Path properties (for example, the Static pressure input path) are more flexible, allowing you to define where the input data can be read from, and should be used whenever you are defining new inputs. The input path should be formatted as follows: tableName.pointName.fieldName

Static pressure input path

Specify the path that will supply the static pressure information. It must consist of any table, record and field listed in the RealTime database.

Static temperature input path

Specify the path that will supply the static temperature information.It must consist of any table, field and record in the RTDB.

Uncorrected volume input path

Specify the path that will supply the uncorrected volume. It must consist of any table, field, and record in the RTDB.

Corrected volume input path

Specify the path that will supply the corrected volume. It must consist of any table, field and record in the RTDB.

Energy input path

Specify the path that will supply the energy information. It must consist of any table, field, and record in the RTDB.

Manual Analog / Rate Inputs

The Manual Analog / Rate Inputs (for example, the Static pressure input) restrict the input to either a rate or an analog, depending on the type of input. This is is provided for backwards compatibility. The Manual Input Paths should be used when defining new inputs.

Static Temperature Input

Defines the analog point name in the RTDB that measures the static temperature for this meter.

Static Pressure Input

Defines the analog point name in the RTDB that measures the static pressure for this meter.

Uncorrected Volume Input

Defines the rate point name in the RTDB that provides the uncorrected volume information.

Corrected Volume Input

Defines the rate point name in the RTDB that provides the corrected volume input.

Energy Input

Defines the rate point name in the RTDB that measures the energy for this meter (if not calculating).

Daily spooling delay (minutes)

The number of minutes to wait after the top of the day before sending the data to the Electronic Flow Measurement (EFM) database. This property is only used if Generate daily history? is selected.

Spooling delay (minutes)

You can assign a time period in minutes to wait after the top of the hour before sending the data to the Electronic Flow Measurement (EFM) database. This property is only used if Generate hourly history? is selected.

Note: A RealTime meter will only send its updated data to EFM if the meter's inputs are fresh and the Last Krunch Time is greater than the top of hour plus the delay. If there is no Last Krunch Time field, then the value must be fresh and greater than the top of hour and delay. If the meter's inputs are stale at the time the data should be sent (typically the top of the hour or after the spooling delay), RealTime processing will wait for the inputs to become fresh before sending the data at the earliest opportunity.