Type 8025

26 | 39

Visit product website 

8.

Product operation

8.1. Measuring principle

Note:

The following measuring principles only apply to the flowmeter or compact batch controller, with paddle-wheel.

When liquid flows through the pipe, the paddle wheel with 4 inserted magnets is set in rotation, producing a measuring signal in the sensor

(coil or Hall sensor depending on variant). The frequency modulated induced voltage is proportional to the flow velocity of the fluid.

A K factor, specific to each pipe, enables the conversion of this frequency into a flow rate/volume.

This K factor is available in the fittings’ operating instructions, see Type S020 .

Flowmeter:

The electronic component converts the measured signal into several outputs (according to the device variant) and displays the actual value.

Totalizers are used to obtain the volume of fluid passed through the pipe.

The electrical connection for the flowmeter with standard output signal is provided via a cable plug according to DIN EN 175301-803 or two

cable glands (according to the flowmeter variant).

Batch controller:

The electronic component converts the measured signal and displays the actual value of the volume or mass. The electrical connection is

provided via two cable glands.

8.2. Functional overview

Display and operating keys

Note:

The following functional overview uses a picture of a panel-mounted variant of the unit, but applies to all versions of Type 8025.

The display is used to:

• read the value of certain parameters e.g. for the flowmeter, the measured flow rate, the main totalizer

• set parameters of the device by means of 3 keys

• read the configuration of the device

• be warned of certain events.