What is TARE VALUE and how is it used?

On Hardy Weight Controllers, Processors, Indicators, or PLC Modules, the current gross weight is placed in the "Tare Value" register, setting the NET weight reading to Zero. You can also input this data from the front keypad (if available) or across communications. This actual process of doing a Tare or updating the Tare Register varies slightly from model to model. Consult the model type user manual for procedures.

The Tare Value is the numerical difference between Gross Weight and Net Weight. The following examples will explain its use:

Example #1 Filling:
An empty container weighing 30 pounds is placed on a scale.
The Tare Button is pushed.
A value of 30 is automatically entered into the Tare Register.
The Gross Weight is 30 pounds, the Tare Value is 30 pounds and the Net Weight is 0 pounds (Gross Weight - Tare Value = Net Weight)
As the container is filled the difference between Gross Weight and Net Weight will remain a constant 30 pounds.

Example #2 Discharging:
A vessel is permanently installed on load cells and calibrated.
The vessel is filled with 1000 pounds of material.
The Tare Button is pushed.
A value of 1000 is automatically entered in the Tare Register.
The Gross Weight is 1000 pounds, the Tare Value is 1000 pounds and the Net Weight is 0 pounds.
When 100 pounds is discharged from the vessel, the Net Weight will read -100 pounds and the Gross Weight will read 900 pounds.
A Tare is performed before each discharge.

Example #3 IBC (Intermediate Bulk Containers):
Full containers arrive with the empty container weight listed.
The empty container weight is entered into the Tare Register via the front panel or downloaded from a PC or PLC.
The Net Weight is now the weight of the material in the container.
The Gross Weight is the total of the material and the container.
The Tare Value is the weight of the container.

The above examples should give you a better understanding of how "Tare Values" are used.