The web tension sensors of the series BZV-A and BZH-A are of a compact pillow block design and suitable for a variety of applications. The sensor is mounted in between the pillow block bearing and the machine frame.
The sensors function according to the strain gauge principle. This means that they are very stiff and not prone to oscillations and vibrations. This is a deciding advantage compared to sensors based on displacement measurement as e.g. exemplified by the LVDT principle (Linear Variable Differential Transformer).
The BZV - devices capture the vertical forces of web tension, the devices of the series BZH the horizontal component.
The voltage supply to the full bridge and the processing of the measuring signals is effected by way of a suitable amplifier of the standard HAEHNE product program. The signals at the output terminals of the amplifier are proportional to the acting vertical force. They can be digitally displayed or used as instantaneous values in a closed control loop.