Head Discharge Table Data Fields

Head discharge tables are used to define the behaviour of ancillary objects such as pumps by listing the discharge from the ancillary at varying head levels. Mechanical power can also be defined in the table.

In InfoAsset Manager, head discharge tables can be assigned to any type of pump.

Head discharge data can be edited on either the Head Discharge Grid Window of the Asset Grid or the Head Discharge Property Sheet.

To view and edit all head discharge data, use the Property Sheet.

The following describes all the data that can be used to define head discharges.

Common Data Fields

Fields that are common to the majority of objects can be found in the Common Fields topic.

Head Discharge Data

Database Table Name: cams_head_discharge

Show Columns

Database Names

Size, Type and Units

Defaults and Error Limits

Field Name

Help Text

Database Field

Data Type

Size

Units

Precision

Default

Error Lower Limit

Error Upper Limit

Warning Lower Limit

Warning Upper Limit

Head discharge ID

The name for this head discharge table.

head_discharge_id

Text

64

 

0

 

 

 

 

 

Description

A description of the head discharge table.

head_discharge_description

Text

80

 

0

 

 

 

 

 

Head discharge power table

The records for the head, discharge and power are entered on the grid in the Head discharge power table window which is displayed by clicking on the button. The grid values will be displayed on the adjacent graph in the Head discharge power table window.

Normally data should be stored in ascending order of head. However, Rotodynamic pumps, which also make use of the power record, require the data to be listed in descending order.

Database Table Name: cams_head_dis_HDP

Show Columns

Database Names

Size, Type and Units

Defaults and Error Limits

Field Name

Description

Database Field

Data Type

Size

Units

Precision

Default

Error Lower Limit

Error Upper Limit

Warning Lower Limit

Warning Upper Limit

Head

The head difference between the water levels upstream and downstream of the structure (for screw pumps this is the difference between the water level and the base level).

 head Double   Y   4      

 

Discharge

The discharge corresponding to this head.

 discharge Double   Q   4      

 

Power

The mechanical power corresponding to this head.

 power Double   WN_POW   4      

 

 

HDP_table

                

 
General properties data fields See Common Data Fields for details of field in the General properties section of the property sheet.                    
User defined properties data fields See Common Data Fields - User Fields for details of fields in the User defined properties section of the property sheet.                    

Ancillaries

Pump Data Fields

Asset Grid